Analysis

  • max time kernel
    158s
  • max time network
    196s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2022 17:57

General

  • Target

    a54d15a4b46f819424bb2959c8b370cb.exe

  • Size

    901KB

  • MD5

    a54d15a4b46f819424bb2959c8b370cb

  • SHA1

    e880d488227b62ec183dc402e956f5dfdea94330

  • SHA256

    60c994d3d36e7f3acacb7d607b4efc3605315e6996f0380ac2d230c0f29a5e90

  • SHA512

    69a5309c418af73eebaa490c2b197c8ce4931736afb7482c4225107261afe2c4bde9ad0d020291be1dfbbdf9e9a7ee44161a0433f4a15c0c3517716694ef9d35

  • SSDEEP

    24576:trVW0KE7V1CZcnjzz1bZsg/xeM6ZjguzCoIVmXC:lbjz9xCS0Coumy

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5577155192:AAEz6ZTkghx2RsdTxeeE-sDulPHc5WQblVg/

Signatures

  • AgentTesla

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

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a54d15a4b46f819424bb2959c8b370cb.exe
    "C:\Users\Admin\AppData\Local\Temp\a54d15a4b46f819424bb2959c8b370cb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Users\Admin\AppData\Local\Temp\a54d15a4b46f819424bb2959c8b370cb.exe
      "C:\Users\Admin\AppData\Local\Temp\a54d15a4b46f819424bb2959c8b370cb.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4588

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a54d15a4b46f819424bb2959c8b370cb.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/2100-132-0x00000000004E0000-0x00000000005C8000-memory.dmp

    Filesize

    928KB

  • memory/2100-133-0x0000000005390000-0x0000000005934000-memory.dmp

    Filesize

    5.6MB

  • memory/2100-134-0x0000000004E80000-0x0000000004F12000-memory.dmp

    Filesize

    584KB

  • memory/2100-135-0x0000000004E30000-0x0000000004E3A000-memory.dmp

    Filesize

    40KB

  • memory/2100-136-0x00000000086B0000-0x000000000874C000-memory.dmp

    Filesize

    624KB

  • memory/4588-137-0x0000000000000000-mapping.dmp

  • memory/4588-138-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/4588-140-0x0000000006440000-0x00000000064A6000-memory.dmp

    Filesize

    408KB

  • memory/4588-141-0x0000000007040000-0x0000000007090000-memory.dmp

    Filesize

    320KB