Analysis

  • max time kernel
    150s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:06

General

  • Target

    New Order Documents.exe

  • Size

    582KB

  • MD5

    a7fc3ba4f95b0c44441dc9bbef395421

  • SHA1

    ab57e90265c7263be4ed81d39ee85f57c3dcbd89

  • SHA256

    a7e0905c5d68fe5f16d13b0df46686024170844c5d68af7b7fb6dcb4fb355e2f

  • SHA512

    163de547e1b847f76d532c266b2b660218b33df07be9bb927db447453c964179a7ecb6c0b44a37402e2f43ff324a563e9cba223da9e1589813ad121d5d59b1df

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.retramtrading.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @2018sales321

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
  • Adds Run key to start application 2 TTPs 1 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\New Order Documents.exe
    "C:\Users\Admin\AppData\Local\Temp\New Order Documents.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3976
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AdUABZQC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5052.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1936
    • C:\Users\Admin\AppData\Local\Temp\New Order Documents.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:236

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    507B

    MD5

    ab4c71d3ff6255edd4e5c1e09540f49e

    SHA1

    22e06bf4e258741b5df918061871cba998c50cea

    SHA256

    1690fec628f775dd3c3385b800eed126b37978ef2ffd592b024052724caafb5a

    SHA512

    8fa7d0045796e6cda7c28e2b9a690ef550619828c1b5d0ebf8e8367aff4bf4d9f63121e5b4f199d30cb8006eb584c6767f4c59150749b8256dab9dd0ebd9f1af

  • C:\Users\Admin\AppData\Local\Temp\tmp5052.tmp

    Filesize

    1KB

    MD5

    722c1b483f7d535041ff3904e874898d

    SHA1

    d05446901d5be7f5389f986dfa5d9aa6faea92f6

    SHA256

    a28ceb70376b401837a483a1b26553f66c5c361cd9027e2d4472dc9029359ac9

    SHA512

    46a4fa822fa7751cfc5859ae85767d820473e6bf4ee1c119d4b4e5aa00f3c1b082049f60770ab0f844e0fc90fd3364a602f32600978efdff72451d98ad350fa9

  • memory/236-136-0x0000000000000000-mapping.dmp

  • memory/236-137-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/236-139-0x00000000067D0000-0x0000000006836000-memory.dmp

    Filesize

    408KB

  • memory/236-140-0x0000000006F10000-0x0000000006F60000-memory.dmp

    Filesize

    320KB

  • memory/236-141-0x00000000011C0000-0x00000000011CA000-memory.dmp

    Filesize

    40KB

  • memory/1936-134-0x0000000000000000-mapping.dmp

  • memory/3976-130-0x00000000006D0000-0x0000000000768000-memory.dmp

    Filesize

    608KB

  • memory/3976-131-0x00000000050C0000-0x000000000515C000-memory.dmp

    Filesize

    624KB

  • memory/3976-132-0x0000000005270000-0x0000000005302000-memory.dmp

    Filesize

    584KB

  • memory/3976-133-0x0000000005E70000-0x0000000006414000-memory.dmp

    Filesize

    5.6MB