Analysis

  • max time kernel
    130s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    26-09-2021 15:10

General

  • Target

    baa34a47a3e304011252780a85ae56be.exe

  • Size

    257KB

  • MD5

    baa34a47a3e304011252780a85ae56be

  • SHA1

    77aaae6ca43345f9dd9871c637176634b4ec5f09

  • SHA256

    e3b25e21c6d04b5f2d72025c7956dbc3a4a5613f3b8d7ab8d0010bc3d437bc1b

  • SHA512

    6c0e07dbf351b5c04d50e08c9f684559f14982096762f1bbc64d4ffe86f6adf0bcf080f08b1032ced59dd3abe47d8701a9d99efc92d6b6c854d879fec6f246d9

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot1816395306:AAE3ZBLYV2L9aT9mL8itL9vr3RP6nOz_B1o/sendMessage?chat_id=1368673464

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Loads dropped DLL 1 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\baa34a47a3e304011252780a85ae56be.exe
    "C:\Users\Admin\AppData\Local\Temp\baa34a47a3e304011252780a85ae56be.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4648
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Users\Admin\AppData\Local\Temp\baa34a47a3e304011252780a85ae56be.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4684
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:4756

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Local\Temp\nsk57A1.tmp\rocn.dll
      MD5

      20e0ca41c8419f551c52aa86700b5074

      SHA1

      e2a47c15342f874e051b18b577eca2c49ab99782

      SHA256

      fde9673e0878783412ae8d1848316601f2f3b567a3688694b42d745fe18f14a0

      SHA512

      0a726b78493a0f8ba01133d12670977e51fc1f1d878b0e389c59f03cb80decb5d50411a88058d6e466c9cfe1ca02c1ffbdb9f1fb855249c0cc351efcc4541a28

    • memory/4684-115-0x000000000042070E-mapping.dmp
    • memory/4684-116-0x0000000000400000-0x0000000000426000-memory.dmp
      Filesize

      152KB

    • memory/4684-118-0x0000000005740000-0x0000000005741000-memory.dmp
      Filesize

      4KB

    • memory/4684-119-0x0000000005330000-0x0000000005331000-memory.dmp
      Filesize

      4KB

    • memory/4684-120-0x0000000005240000-0x000000000573E000-memory.dmp
      Filesize

      5.0MB

    • memory/4684-122-0x00000000063E0000-0x00000000063E1000-memory.dmp
      Filesize

      4KB

    • memory/4684-123-0x0000000006750000-0x0000000006751000-memory.dmp
      Filesize

      4KB

    • memory/4684-124-0x0000000006710000-0x0000000006711000-memory.dmp
      Filesize

      4KB

    • memory/4684-125-0x0000000005240000-0x000000000573E000-memory.dmp
      Filesize

      5.0MB

    • memory/4756-121-0x0000000000000000-mapping.dmp