Analysis

  • max time kernel
    143s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2023 19:10

General

  • Target

    Doc0750012xls.exe

  • Size

    130KB

  • MD5

    1f5e3fcbdd05b2d7975bdba2c9397142

  • SHA1

    b98fa7f58a059e2b136ac22b78b23da2fe0d78e3

  • SHA256

    644a614093e652cd1f25a25e72479b6a50c3075cbf557a0549600bdbc521c3a3

  • SHA512

    1bcc5627f281e4b4ffcc7f468b92d03afff4dfc2b66d7f70fd04380ec20a7c2bf1a6a3c7dca474f273c2f4c245b4760c490fb24468f0a0627a08c17526006dbf

  • SSDEEP

    1536:B5rFV5vpLIr56x6UkUPmxSQNrjxsM0F48t6A3htV:B5xtLheUuxSJF492V

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    server1.sqsendy.shop
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    (;1q-5*CoN.3

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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 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 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Doc0750012xls.exe
    "C:\Users\Admin\AppData\Local\Temp\Doc0750012xls.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3048
    • C:\Users\Admin\AppData\Local\Temp\Doc0750012xls.exe
      C:\Users\Admin\AppData\Local\Temp\Doc0750012xls.exe
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4912

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Doc0750012xls.exe.log

    Filesize

    1KB

    MD5

    8c2da65103d6b46d8cf610b118210cf0

    SHA1

    9db4638340bb74f2af3161cc2c9c0b8b32e6ab65

    SHA256

    0e48e2efd419951e0eb9a8d942493cfdf5540d1d19ff9dae6f145fb3ebcbeeac

    SHA512

    3cf5a125276e264cd8478f2b92d3848fb68b96d46eb4a39e650d09df02068c274881a1c314cdfbfdcb452672fb70dd8becf3ffe9562d39919d9c4d6b07fbb614

  • memory/3048-19-0x0000000074AF0000-0x00000000752A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3048-1-0x0000000074AF0000-0x00000000752A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3048-2-0x0000000005FB0000-0x0000000006554000-memory.dmp

    Filesize

    5.6MB

  • memory/3048-3-0x0000000005950000-0x00000000059E2000-memory.dmp

    Filesize

    584KB

  • memory/3048-4-0x0000000005B10000-0x0000000005B20000-memory.dmp

    Filesize

    64KB

  • memory/3048-5-0x0000000005940000-0x000000000594A000-memory.dmp

    Filesize

    40KB

  • memory/3048-6-0x0000000006EA0000-0x0000000006EFA000-memory.dmp

    Filesize

    360KB

  • memory/3048-7-0x0000000006F70000-0x0000000006FB2000-memory.dmp

    Filesize

    264KB

  • memory/3048-8-0x00000000070B0000-0x00000000070F0000-memory.dmp

    Filesize

    256KB

  • memory/3048-9-0x00000000070F0000-0x000000000713C000-memory.dmp

    Filesize

    304KB

  • memory/3048-0-0x0000000000F30000-0x0000000000F54000-memory.dmp

    Filesize

    144KB

  • memory/4912-11-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4912-15-0x0000000005680000-0x00000000056E6000-memory.dmp

    Filesize

    408KB

  • memory/4912-16-0x0000000002DE0000-0x0000000002DF0000-memory.dmp

    Filesize

    64KB

  • memory/4912-17-0x0000000006DA0000-0x0000000006DF0000-memory.dmp

    Filesize

    320KB

  • memory/4912-18-0x0000000006E90000-0x0000000006F2C000-memory.dmp

    Filesize

    624KB

  • memory/4912-14-0x0000000074AF0000-0x00000000752A0000-memory.dmp

    Filesize

    7.7MB

  • memory/4912-20-0x0000000074AF0000-0x00000000752A0000-memory.dmp

    Filesize

    7.7MB

  • memory/4912-21-0x0000000002DE0000-0x0000000002DF0000-memory.dmp

    Filesize

    64KB