Executive Overview — What We’re Dealing With

This specimen has persisted long enough to matter. Human experts classified it as Malware, and the telemetry confirms a capable, evasive Trojan with real impact potential.

Extended Dwell Time Impact

For 7+ hours, this malware remained undetected — a several-hour window that allowed the adversary to complete initial compromise and begin early-stage persistence establishment.

Global Detection Posture — Who Caught It, Who Missed It

VirusTotal engines: 73. Detected as malicious: 57. Missed: 16. Coverage: 78.1%.

Why it matters: if any endpoint relies solely on a missed engine, this malware can operate with zero alerts. Prevention‑first controls close that gap regardless of signature lag.

MITRE ATT&CK Mapping

• T1620 – load .NET assembly
• T1140 – decode data using Base64 in .NET
• T1560.002 – compress data using GZip in .NET
• T1620 – invoke .NET assembly method
• T1033 – Collects and encrypts information about the computer likely to send to C2 server
• T1082 – Checks available memory
• T1539 – Touches a file containing cookies, possibly for information gathering
• T1070.006 – Binary compilation timestomping detected
• T1112 – Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
• T1070 – Binary compilation timestomping detected
• T1064 – A scripting utility was executed
• T1064 – Attempts to execute suspicious powershell command arguments
• T1027 – The binary likely contains encrypted or compressed data
• T1027.002 – The binary likely contains encrypted or compressed data
• T1071 – Terminates another process
• T1071 – At least one IP Address, Domain, or File Name was found in a crypto call
• T1071 – Attempts to connect to a dead IP:Port
• T1071 – Reads data out of its own binary image
• T1106 – Guard pages use detected – possible anti-debugging.
• T1059 – Executed a very long command line or script command which may be indicative of chained commands or obfuscation
• T1059 – A script or command line contains a long continuous string indicative of obfuscation
• T1059 – A scripting utility was executed
• T1059 – Attempts to execute suspicious powershell command arguments
• T1059.001 – Attempts to execute suspicious powershell command arguments
• T1005 – Attempts to access Bitcoin/ALTCoin wallets
• T1560 – Collects and encrypts information about the computer likely to send to C2 server
• T1047 – Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, often done to detect virtual machines)
• T1047 – Queries process information (via WMI, Win32_Process)
• T1047 – Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
• T1047 – Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
• T1047 – Queries memory information (via WMI often done to detect virtual machines)
• T1047 – Checks if Antivirus program is installed (via WMI)
• T1059 – Very long cmdline option found, this is very uncommon (may be encrypted or packed)
• T1059.001 – Bypasses PowerShell execution policy
• T1059.001 – Encrypted powershell cmdline option found
• T1059.001 – Detected PureCrypter Trojan
• T1055 – May try to detect the Windows Explorer process (often used for injection)
• T1036 – Creates files inside the user directory
• T1112 – Stores large binary data to the registry
• T1562.001 – Creates guard pages, often used to prevent reverse engineering and debugging
• T1497 – Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, often done to detect virtual machines)
• T1497 – Allocates memory with a write watch (potentially for evading sandboxes)
• T1497 – May sleep (evasive loops) to hinder dynamic analysis
• T1497 – Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
• T1497 – Queries Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
• T1497 – Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
• T1140 – Encrypted powershell cmdline option found
• T1140 – Detected PureCrypter Trojan
• T1027 – Binary may include packed or crypted data
• T1027.002 – PE file has an executable .text section which is very likely to contain packed code (zlib compression ratio < 0.3)
• T1027.002 – .NET source code contains potential unpacker
• T1027.002 – Binary may include packed or crypted data
• T1070.006 – Binary contains a suspicious time stamp
• T1056 – Installs a global keyboard hook
• T1056 – Sample has functionality to log and monitor keystrokes, analyze it with the keystroke simulation cookbook
• T1518.001 – Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, often done to detect virtual machines)
• T1518.001 – Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
• T1518.001 – Queries Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
• T1518.001 – Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
• T1518.001 – Queries memory information (via WMI often done to detect virtual machines)
• T1518.001 – Checks if Antivirus program is installed (via WMI)
• T1057 – Queries a list of all running processes
• T1057 – May try to detect the Windows Explorer process (often used for injection)
• T1082 – Queries the volume information (name, serial number etc) of a device
• T1082 – Queries process information (via WMI, Win32_Process)
• T1082 – Queries the cryptographic machine GUID
• T1082 – Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
• T1082 – Queries Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
• T1005 – Found many strings related to Crypto-Wallets (likely being stolen)
• T1571 – Detected TCP or UDP traffic on non-standard ports

Following the Trail — Network & DNS Activity

Outbound activity leans on reputable infrastructure (e.g., CDNs, cloud endpoints) to blend in. TLS sessions and
HTTP calls show routine beaconing and IP‑lookup behavior that can masquerade as normal browsing.

Hunting tip: alert on unknown binaries initiating TLS to IP‑lookup services or unusual CDN endpoints — especially early in execution.