Analysis

  • max time kernel
    133s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 20:48

General

  • Target

    42a797a4f307560dc99d8f936ae0ed8a2f3811d58e7fb4bc87a0886578110149.exe

  • Size

    791KB

  • MD5

    64d371aa778984786fb0368d5824a841

  • SHA1

    7044fbd5634becff21be68f42546d529a5544ff2

  • SHA256

    42a797a4f307560dc99d8f936ae0ed8a2f3811d58e7fb4bc87a0886578110149

  • SHA512

    7319d9a1428c889f3ff6cfe6346a88781bcd19e137d6a1d5b67f6bbeefb27a56a1094d506b22b544c0322ffafb08322b57319ccecc16fb488a33594a65729c93

  • SSDEEP

    12288:FwTyVhpCNtWV4Z9GthGp0V2gbEPzyGT32hAwAFFnUSf5v61pH42FuFnW5M72j1/8:FK1ZqaK5bezy031FJxRs

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.officeemailbackup.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    d1IXFo$=lK[r

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\42a797a4f307560dc99d8f936ae0ed8a2f3811d58e7fb4bc87a0886578110149.exe
    "C:\Users\Admin\AppData\Local\Temp\42a797a4f307560dc99d8f936ae0ed8a2f3811d58e7fb4bc87a0886578110149.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4472
    • C:\Users\Admin\AppData\Local\Temp\42a797a4f307560dc99d8f936ae0ed8a2f3811d58e7fb4bc87a0886578110149.exe
      "C:\Users\Admin\AppData\Local\Temp\42a797a4f307560dc99d8f936ae0ed8a2f3811d58e7fb4bc87a0886578110149.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4488

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\42a797a4f307560dc99d8f936ae0ed8a2f3811d58e7fb4bc87a0886578110149.exe.log
    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/4472-8-0x0000000009710000-0x0000000009792000-memory.dmp
    Filesize

    520KB

  • memory/4472-5-0x0000000074920000-0x00000000750D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4472-9-0x0000000006B90000-0x0000000006C2C000-memory.dmp
    Filesize

    624KB

  • memory/4472-4-0x0000000005370000-0x000000000537A000-memory.dmp
    Filesize

    40KB

  • memory/4472-14-0x0000000074920000-0x00000000750D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4472-6-0x0000000008110000-0x000000000812A000-memory.dmp
    Filesize

    104KB

  • memory/4472-7-0x0000000008130000-0x0000000008140000-memory.dmp
    Filesize

    64KB

  • memory/4472-1-0x0000000000E80000-0x0000000000F4C000-memory.dmp
    Filesize

    816KB

  • memory/4472-3-0x0000000007E00000-0x0000000007E92000-memory.dmp
    Filesize

    584KB

  • memory/4472-2-0x00000000082F0000-0x0000000008894000-memory.dmp
    Filesize

    5.6MB

  • memory/4472-0-0x000000007492E000-0x000000007492F000-memory.dmp
    Filesize

    4KB

  • memory/4488-13-0x0000000074920000-0x00000000750D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4488-10-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/4488-15-0x0000000074920000-0x00000000750D0000-memory.dmp
    Filesize

    7.7MB

  • memory/4488-16-0x00000000059B0000-0x0000000005A16000-memory.dmp
    Filesize

    408KB

  • memory/4488-17-0x0000000007080000-0x00000000070D0000-memory.dmp
    Filesize

    320KB

  • memory/4488-18-0x0000000074920000-0x00000000750D0000-memory.dmp
    Filesize

    7.7MB