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Analysis

  • max time kernel
    47s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04/01/2023, 07:32

General

  • Target

    2bc285f3a8bd60f55bd659b360b1c77eab820b5e.exe

  • Size

    943KB

  • MD5

    21e603ea77b316cce2ec68a44cd735c7

  • SHA1

    2bc285f3a8bd60f55bd659b360b1c77eab820b5e

  • SHA256

    221a81d66ccd5492f313733aca66534af9350f427c50a6b30c7a65dce1ea0fbb

  • SHA512

    0256baa5a9e545d3936e98a77eebdaa457aaa78c25c2c9717762d2fbaa103ab26f45bb93164a40374ec0b324b538c42992440ffda7df89b8bef621d2a694b39e

  • SSDEEP

    12288:ziWHxYV/jqmkMD2DExj6L+lMBebblLTMGa9EDL9y3r9FibYjIaCJVbDGo:ztHxYgExj6L+lMBebbRMCD7sjIxJDv

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    host39.registrar-servers.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    payment 12345

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
  • 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
  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2bc285f3a8bd60f55bd659b360b1c77eab820b5e.exe
    "C:\Users\Admin\AppData\Local\Temp\2bc285f3a8bd60f55bd659b360b1c77eab820b5e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CDNABzJvQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp622D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1748
    • C:\Users\Admin\AppData\Local\Temp\2bc285f3a8bd60f55bd659b360b1c77eab820b5e.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1348

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp622D.tmp

    Filesize

    1KB

    MD5

    640988d3c03a120d142c778a0e26c836

    SHA1

    abe36376824f4210c02f49acb5a9d541b7ee56eb

    SHA256

    9f6caf9fd0bdee83ead4668231aaa46575eeff4662e2cabb6f8e8b3113c76424

    SHA512

    6713de5c14158a99450d4d780d86a335643c4714c9987d0ecb67f7d5b237f6346200271b0aacf8b688f55bd69b108f2d1ba39df517f6922ec496ecd1583502b6

  • memory/1348-64-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1348-66-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1348-71-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1348-69-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1348-65-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1348-61-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1348-62-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2036-54-0x0000000000C30000-0x0000000000D22000-memory.dmp

    Filesize

    968KB

  • memory/2036-55-0x0000000075521000-0x0000000075523000-memory.dmp

    Filesize

    8KB

  • memory/2036-56-0x0000000000850000-0x0000000000862000-memory.dmp

    Filesize

    72KB

  • memory/2036-58-0x0000000000BD0000-0x0000000000C0C000-memory.dmp

    Filesize

    240KB

  • memory/2036-57-0x00000000052C0000-0x000000000533A000-memory.dmp

    Filesize

    488KB