Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2023 08:05

General

  • Target

    Doc 20230512.exe

  • Size

    695KB

  • MD5

    c891275650f4cfc017f91d1132b15b34

  • SHA1

    2ba052377e2df3d036e7f8d80a88ced4dedbc5b9

  • SHA256

    5bb7ca6a83079f79045f0fa552b1df5b003f01e6f348e6f5da91793c660647e6

  • SHA512

    ef9f5a348c399d3f9091b1ad9368f8940862b89f1af8c9591ba7d788d47044682a28cbdeddd46678f0819afef0a40e0b23179a3f80fe673e2b6cdfe2c43dd16e

  • SSDEEP

    12288:Xnl5nF80iHjbxEsoZZ+kwV9/Qaf2GVBSmr0QpG1zBjGHdbR04dqrlbm:3lKlEsnvonGz0Qp64kHhbm

Malware Config

Extracted

Family

agenttesla

Credentials

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.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Doc 20230512.exe
    "C:\Users\Admin\AppData\Local\Temp\Doc 20230512.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Users\Admin\AppData\Local\Temp\Doc 20230512.exe
      "C:\Users\Admin\AppData\Local\Temp\Doc 20230512.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2272

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1600-0-0x0000000000DF0000-0x0000000000EA2000-memory.dmp

    Filesize

    712KB

  • memory/1600-1-0x0000000074700000-0x0000000074DEE000-memory.dmp

    Filesize

    6.9MB

  • memory/1600-2-0x0000000004E60000-0x0000000004EA0000-memory.dmp

    Filesize

    256KB

  • memory/1600-3-0x00000000002B0000-0x00000000002C8000-memory.dmp

    Filesize

    96KB

  • memory/1600-4-0x0000000000450000-0x0000000000458000-memory.dmp

    Filesize

    32KB

  • memory/1600-5-0x0000000000460000-0x000000000046A000-memory.dmp

    Filesize

    40KB

  • memory/1600-6-0x0000000005320000-0x000000000539A000-memory.dmp

    Filesize

    488KB

  • memory/1600-17-0x0000000074700000-0x0000000074DEE000-memory.dmp

    Filesize

    6.9MB

  • memory/2272-8-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2272-9-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2272-10-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2272-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2272-13-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2272-15-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2272-18-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2272-7-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2272-19-0x0000000074700000-0x0000000074DEE000-memory.dmp

    Filesize

    6.9MB

  • memory/2272-20-0x0000000074700000-0x0000000074DEE000-memory.dmp

    Filesize

    6.9MB

  • memory/2272-21-0x0000000004C20000-0x0000000004C60000-memory.dmp

    Filesize

    256KB