Analysis

  • max time kernel
    115s
  • max time network
    117s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-06-2024 10:15

General

  • Target

    Description CALIPSO dd 26.03.2024.doc.scr

  • Size

    843KB

  • MD5

    6e075d09953e877c0ca9a98ac749dff2

  • SHA1

    a3dc16d79e5487c622c30545a47ac504573e9ea8

  • SHA256

    50ef75bd66c4bb9ce6001a41b53c0925e98eaed9b94b7125543ffecc0d4ace82

  • SHA512

    67bb4c0e98751650b4d170dc30d110c035b4115952fda1b725ff73290675d712b9947e79f7f424df2b2e9a40d9bddbbe33bbc1147552c99ee0c0da8cc3a0d550

  • SSDEEP

    24576:3MYeLSN5iFoayUfVtUv6LPg/Vv82DFF4:3MYeGN5iFZyMNzg/2wFF4

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    beirutrest.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    9yXQ39wz(uL+

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://beirutrest.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    9yXQ39wz(uL+

Signatures

  • AgentTesla

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

  • 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 WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Description CALIPSO dd 26.03.2024.doc.scr
    "C:\Users\Admin\AppData\Local\Temp\Description CALIPSO dd 26.03.2024.doc.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1472
    • C:\Users\Admin\AppData\Local\Temp\Description CALIPSO dd 26.03.2024.doc.scr
      "C:\Users\Admin\AppData\Local\Temp\Description CALIPSO dd 26.03.2024.doc.scr"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4728

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Description CALIPSO dd 26.03.2024.doc.scr.log

    Filesize

    1KB

    MD5

    b7b9acb869ccc7f7ecb5304ec0384dee

    SHA1

    6a90751c95817903ee833d59a0abbef425a613b3

    SHA256

    8cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4

    SHA512

    7bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764

  • memory/1472-10-0x0000000006A30000-0x0000000006AB2000-memory.dmp

    Filesize

    520KB

  • memory/1472-16-0x0000000074A40000-0x00000000751F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1472-9-0x00000000060B0000-0x00000000060C0000-memory.dmp

    Filesize

    64KB

  • memory/1472-4-0x00000000054C0000-0x0000000005814000-memory.dmp

    Filesize

    3.3MB

  • memory/1472-5-0x0000000074A40000-0x00000000751F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1472-6-0x00000000058D0000-0x00000000058DA000-memory.dmp

    Filesize

    40KB

  • memory/1472-7-0x0000000006080000-0x0000000006096000-memory.dmp

    Filesize

    88KB

  • memory/1472-8-0x00000000060A0000-0x00000000060AE000-memory.dmp

    Filesize

    56KB

  • memory/1472-3-0x0000000005420000-0x00000000054B2000-memory.dmp

    Filesize

    584KB

  • memory/1472-2-0x0000000005930000-0x0000000005ED4000-memory.dmp

    Filesize

    5.6MB

  • memory/1472-0-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

    Filesize

    4KB

  • memory/1472-11-0x0000000009290000-0x000000000932C000-memory.dmp

    Filesize

    624KB

  • memory/1472-1-0x0000000000A30000-0x0000000000B08000-memory.dmp

    Filesize

    864KB

  • memory/4728-20-0x0000000074A40000-0x00000000751F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4728-15-0x0000000074A40000-0x00000000751F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4728-17-0x0000000074A40000-0x00000000751F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4728-18-0x0000000005700000-0x0000000005766000-memory.dmp

    Filesize

    408KB

  • memory/4728-19-0x0000000006DE0000-0x0000000006E30000-memory.dmp

    Filesize

    320KB

  • memory/4728-12-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB