Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-03-2024 02:09

General

  • Target

    210759f49f032d8823c360b0e6d609ccf2259b885e86a15a70a39c09124b9a60.exe

  • Size

    725KB

  • MD5

    66363d5d02420413adf19577786980d7

  • SHA1

    a0c95000bcfdea5d6c07903f340d0b5f5388a879

  • SHA256

    210759f49f032d8823c360b0e6d609ccf2259b885e86a15a70a39c09124b9a60

  • SHA512

    91f3df8c1fbe159e41828178441bdf26fa1c9c84cfcb9d8b1552fe42617b684d41483b9c025ec7491c5ef6aeb2d5a2a1991a4bc70118289a9efa9f41498108bb

  • SSDEEP

    12288:6C6Va5W0mpvhQqoiUKV23ubmiDZzMGCoz5EsSz0BZfrt04H+VUN6MLKvOHkR:d6P0mpGViUKV24mi1zsodEw924VAx

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.thanhancompony.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    aSkIhV^3

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 binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
  • Detects executables packed with SmartAssembly 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 1 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\210759f49f032d8823c360b0e6d609ccf2259b885e86a15a70a39c09124b9a60.exe
    "C:\Users\Admin\AppData\Local\Temp\210759f49f032d8823c360b0e6d609ccf2259b885e86a15a70a39c09124b9a60.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4004
    • C:\Users\Admin\AppData\Local\Temp\210759f49f032d8823c360b0e6d609ccf2259b885e86a15a70a39c09124b9a60.exe
      "C:\Users\Admin\AppData\Local\Temp\210759f49f032d8823c360b0e6d609ccf2259b885e86a15a70a39c09124b9a60.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1620

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Collection

Data from Local System

4
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\210759f49f032d8823c360b0e6d609ccf2259b885e86a15a70a39c09124b9a60.exe.log
    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/1620-10-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/1620-19-0x0000000005430000-0x0000000005440000-memory.dmp
    Filesize

    64KB

  • memory/1620-18-0x0000000075290000-0x0000000075A40000-memory.dmp
    Filesize

    7.7MB

  • memory/1620-17-0x00000000068C0000-0x0000000006910000-memory.dmp
    Filesize

    320KB

  • memory/1620-16-0x00000000055F0000-0x0000000005656000-memory.dmp
    Filesize

    408KB

  • memory/1620-15-0x0000000005430000-0x0000000005440000-memory.dmp
    Filesize

    64KB

  • memory/1620-14-0x0000000075290000-0x0000000075A40000-memory.dmp
    Filesize

    7.7MB

  • memory/4004-8-0x0000000007010000-0x0000000007094000-memory.dmp
    Filesize

    528KB

  • memory/4004-9-0x0000000009820000-0x00000000098BC000-memory.dmp
    Filesize

    624KB

  • memory/4004-1-0x0000000075290000-0x0000000075A40000-memory.dmp
    Filesize

    7.7MB

  • memory/4004-7-0x0000000005AF0000-0x0000000005AFC000-memory.dmp
    Filesize

    48KB

  • memory/4004-13-0x0000000075290000-0x0000000075A40000-memory.dmp
    Filesize

    7.7MB

  • memory/4004-6-0x0000000005AD0000-0x0000000005AE2000-memory.dmp
    Filesize

    72KB

  • memory/4004-5-0x0000000005850000-0x000000000585A000-memory.dmp
    Filesize

    40KB

  • memory/4004-4-0x0000000005B10000-0x0000000005B20000-memory.dmp
    Filesize

    64KB

  • memory/4004-3-0x0000000005890000-0x0000000005922000-memory.dmp
    Filesize

    584KB

  • memory/4004-2-0x0000000005E40000-0x00000000063E4000-memory.dmp
    Filesize

    5.6MB

  • memory/4004-0-0x0000000000DA0000-0x0000000000E58000-memory.dmp
    Filesize

    736KB