Analysis

  • max time kernel
    132s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:27

General

  • Target

    INQ#10932.exe

  • Size

    910KB

  • MD5

    ab173fc941b3ff29b61a7c367a20f0c9

  • SHA1

    7c2d64b587f9f61e4db8c51684194ce090c0325a

  • SHA256

    dc33d410898885b637ad8dd510d290ff2c00ae00069f28a60a282364faf0384e

  • SHA512

    2101db46bdd426ccd977db05324910c6d1b33eaab02a3fd88d3b2e74b404b1243abf1f7d4e34536d02a2e308428eaa15d6c4d8ada44a4c317d00ec68c57533f1

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @Mexico1.,

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @Mexico1.,

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\INQ#10932.exe
    "C:\Users\Admin\AppData\Local\Temp\INQ#10932.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:324
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\emnGSvCqPQSKI" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD561.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4704
    • C:\Users\Admin\AppData\Local\Temp\INQ#10932.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:116

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpD561.tmp

    Filesize

    1KB

    MD5

    987aa36df2fc0a572b2cd913c20bf99a

    SHA1

    6778168bb1c86e814a1f014779d6e443b1a80a28

    SHA256

    b872575cdf95166db8ad102a318877842ceeec8b00c910ca66ef94e52cd5bd3d

    SHA512

    0dfa7d3872ef07d032ae24321600974ab44479b1d14913eae230fbee4649cca90914291d7ab7973be7f0b89cee6e0a7ca166533c4a3f5ed0f30ef5f9cb0ffa42

  • memory/116-137-0x0000000000000000-mapping.dmp

  • memory/116-138-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/116-139-0x0000000005F90000-0x0000000005FF6000-memory.dmp

    Filesize

    408KB

  • memory/116-140-0x0000000006670000-0x00000000066C0000-memory.dmp

    Filesize

    320KB

  • memory/116-141-0x0000000006930000-0x000000000693A000-memory.dmp

    Filesize

    40KB

  • memory/324-130-0x0000000000D00000-0x0000000000DEA000-memory.dmp

    Filesize

    936KB

  • memory/324-131-0x0000000005C50000-0x00000000061F4000-memory.dmp

    Filesize

    5.6MB

  • memory/324-132-0x0000000005AA0000-0x0000000005B32000-memory.dmp

    Filesize

    584KB

  • memory/324-133-0x0000000006390000-0x0000000006516000-memory.dmp

    Filesize

    1.5MB

  • memory/324-134-0x0000000005B40000-0x0000000005BDC000-memory.dmp

    Filesize

    624KB

  • memory/4704-135-0x0000000000000000-mapping.dmp