Analysis

  • max time kernel
    139s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    26-01-2021 15:56

General

  • Target

    6f9a9e4bf7982b48dda0ba7fd67c39d7.exe

  • Size

    1.2MB

  • MD5

    6f9a9e4bf7982b48dda0ba7fd67c39d7

  • SHA1

    41d9e74977d68ce1744744e6bfe0171d6b4b895e

  • SHA256

    7c6d1379dd3786047f63cb90f2f318c00ac1483c6a5f6e00ad8efb6240a6548c

  • SHA512

    03f450beb73ada241517cc8f03f48b4b4268a52766742e25e77fdab0ab0b916a29c6429a6a23c82991ff71571b76899db42b3dca8251dcda2385598ce19a894e

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f9a9e4bf7982b48dda0ba7fd67c39d7.exe
    "C:\Users\Admin\AppData\Local\Temp\6f9a9e4bf7982b48dda0ba7fd67c39d7.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4052
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "bme" /t REG_SZ /d "C:\Users\Admin\rokg.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3728
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "bme" /t REG_SZ /d "C:\Users\Admin\rokg.exe"
        3⤵
        • Adds Run key to start application
        PID:3712
    • C:\Users\Admin\rokg.exe
      "C:\Users\Admin\rokg.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2188
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2576

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\rokg.exe

    MD5

    6f9a9e4bf7982b48dda0ba7fd67c39d7

    SHA1

    41d9e74977d68ce1744744e6bfe0171d6b4b895e

    SHA256

    7c6d1379dd3786047f63cb90f2f318c00ac1483c6a5f6e00ad8efb6240a6548c

    SHA512

    03f450beb73ada241517cc8f03f48b4b4268a52766742e25e77fdab0ab0b916a29c6429a6a23c82991ff71571b76899db42b3dca8251dcda2385598ce19a894e

  • C:\Users\Admin\rokg.exe

    MD5

    6f9a9e4bf7982b48dda0ba7fd67c39d7

    SHA1

    41d9e74977d68ce1744744e6bfe0171d6b4b895e

    SHA256

    7c6d1379dd3786047f63cb90f2f318c00ac1483c6a5f6e00ad8efb6240a6548c

    SHA512

    03f450beb73ada241517cc8f03f48b4b4268a52766742e25e77fdab0ab0b916a29c6429a6a23c82991ff71571b76899db42b3dca8251dcda2385598ce19a894e

  • memory/2188-14-0x0000000000000000-mapping.dmp

  • memory/2188-28-0x0000000008CA0000-0x0000000008CA1000-memory.dmp

    Filesize

    4KB

  • memory/2188-27-0x0000000008C90000-0x0000000008C9B000-memory.dmp

    Filesize

    44KB

  • memory/2188-26-0x0000000002871000-0x0000000002872000-memory.dmp

    Filesize

    4KB

  • memory/2188-23-0x0000000002870000-0x0000000002871000-memory.dmp

    Filesize

    4KB

  • memory/2188-17-0x0000000073820000-0x0000000073F0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2576-29-0x0000000000400000-0x0000000000468000-memory.dmp

    Filesize

    416KB

  • memory/2576-36-0x0000000005400000-0x0000000005401000-memory.dmp

    Filesize

    4KB

  • memory/2576-41-0x0000000005EE0000-0x0000000005EE1000-memory.dmp

    Filesize

    4KB

  • memory/2576-39-0x0000000005F50000-0x0000000005F51000-memory.dmp

    Filesize

    4KB

  • memory/2576-38-0x0000000004FF0000-0x0000000004FF1000-memory.dmp

    Filesize

    4KB

  • memory/2576-33-0x0000000073820000-0x0000000073F0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2576-30-0x0000000000463B7E-mapping.dmp

  • memory/3712-12-0x0000000000000000-mapping.dmp

  • memory/3728-11-0x0000000000000000-mapping.dmp

  • memory/4052-6-0x0000000005250000-0x0000000005251000-memory.dmp

    Filesize

    4KB

  • memory/4052-2-0x0000000073820000-0x0000000073F0E000-memory.dmp

    Filesize

    6.9MB

  • memory/4052-8-0x0000000005C50000-0x0000000005C6E000-memory.dmp

    Filesize

    120KB

  • memory/4052-5-0x0000000004FC0000-0x0000000004FC1000-memory.dmp

    Filesize

    4KB

  • memory/4052-3-0x0000000000640000-0x0000000000641000-memory.dmp

    Filesize

    4KB

  • memory/4052-9-0x00000000050E0000-0x00000000050E1000-memory.dmp

    Filesize

    4KB

  • memory/4052-13-0x0000000005251000-0x0000000005252000-memory.dmp

    Filesize

    4KB

  • memory/4052-10-0x0000000008560000-0x0000000008561000-memory.dmp

    Filesize

    4KB