Analysis

  • max time kernel
    117s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    02/08/2021, 08:51

General

  • Target
    4fd47345fcaa5d27cbc328b1d7350f63.exe
  • Size 1.4MB
  • Sample210802-v68vfj96da
  • SHA256 ba9469e7cfecfe460c5f424bc38d0e64cc417b71d7675f46e54e3d9f3b5d03d6
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot1846829589:AAHSsEDTKvDOQ17YrNRY5_FXv5z4mpfGRIc/sendDocument

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4fd47345fcaa5d27cbc328b1d7350f63.exe
    "C:\Users\Admin\AppData\Local\Temp\4fd47345fcaa5d27cbc328b1d7350f63.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4092
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QTeUhRTEEn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4BFE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3632
    • C:\Users\Admin\AppData\Local\Temp\4fd47345fcaa5d27cbc328b1d7350f63.exe
      "C:\Users\Admin\AppData\Local\Temp\4fd47345fcaa5d27cbc328b1d7350f63.exe"
      2⤵
        PID:3616
      • C:\Users\Admin\AppData\Local\Temp\4fd47345fcaa5d27cbc328b1d7350f63.exe
        "C:\Users\Admin\AppData\Local\Temp\4fd47345fcaa5d27cbc328b1d7350f63.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3116

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/3116-135-0x0000000005BB0000-0x0000000005BB1000-memory.dmp

          memory/3116-134-0x0000000005320000-0x0000000005321000-memory.dmp

          memory/3116-133-0x0000000004EC0000-0x00000000053BE000-memory.dmp

          memory/3116-126-0x0000000000400000-0x000000000043C000-memory.dmp

          memory/4092-119-0x0000000005350000-0x0000000005351000-memory.dmp

          memory/4092-123-0x0000000005310000-0x0000000005348000-memory.dmp

          memory/4092-122-0x0000000009EF0000-0x0000000009F88000-memory.dmp

          memory/4092-121-0x0000000001190000-0x000000000119D000-memory.dmp

          memory/4092-120-0x0000000004FD0000-0x00000000054CE000-memory.dmp

          memory/4092-114-0x0000000000690000-0x0000000000691000-memory.dmp

          memory/4092-118-0x0000000005010000-0x0000000005011000-memory.dmp

          memory/4092-117-0x0000000005070000-0x0000000005071000-memory.dmp

          memory/4092-116-0x00000000054D0000-0x00000000054D1000-memory.dmp