Analysis

  • max time kernel
    92s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2022 12:00

General

  • Target

    a8feb481321a5d9f835b2992e890239e.exe

  • Size

    874KB

  • MD5

    a8feb481321a5d9f835b2992e890239e

  • SHA1

    77da18cf3e3a831d9507e4e53d191f01b5289c33

  • SHA256

    5925646f5ca292b1e00a1b42b4b66cbaab222069fd0e4bcf7007a07a939e44f7

  • SHA512

    769a2734abe0da330eaddf34b4cb7ef53eadd9eb32b06076b8e760b6b39da061f3117dd5f667e8afa4c0c89456414bfd206679edb954d6f902d750471a9460b9

  • SSDEEP

    12288:ooQgKZ/nXt7virmWhlGLaQYIzjma919I9rws25iUC5ricmEnOQ4WWC37dktmPFum:sfnIBrH5rNLnOQ4WWEd+mPFI

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    DreamChaser101

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    DreamChaser101

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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8feb481321a5d9f835b2992e890239e.exe
    "C:\Users\Admin\AppData\Local\Temp\a8feb481321a5d9f835b2992e890239e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5104
    • C:\Users\Admin\AppData\Local\Temp\a8feb481321a5d9f835b2992e890239e.exe
      "C:\Users\Admin\AppData\Local\Temp\a8feb481321a5d9f835b2992e890239e.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2848

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a8feb481321a5d9f835b2992e890239e.exe.log
    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/2848-137-0x0000000000000000-mapping.dmp
  • memory/2848-138-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2848-140-0x00000000060C0000-0x0000000006126000-memory.dmp
    Filesize

    408KB

  • memory/2848-141-0x0000000006520000-0x0000000006570000-memory.dmp
    Filesize

    320KB

  • memory/5104-132-0x0000000000700000-0x00000000007E0000-memory.dmp
    Filesize

    896KB

  • memory/5104-133-0x0000000005830000-0x0000000005DD4000-memory.dmp
    Filesize

    5.6MB

  • memory/5104-134-0x00000000051C0000-0x0000000005252000-memory.dmp
    Filesize

    584KB

  • memory/5104-135-0x0000000005170000-0x000000000517A000-memory.dmp
    Filesize

    40KB

  • memory/5104-136-0x0000000005470000-0x000000000550C000-memory.dmp
    Filesize

    624KB