Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:13

General

  • Target

    Payment confirmation.exe

  • Size

    340KB

  • MD5

    0d93e6fe85bf79804990d42976ced9e0

  • SHA1

    3d302882eceb550d7c92f042048d210fe84219e0

  • SHA256

    d6de7175146f4b7d262b23adb6b14f3193fc755e10d80353a1a3cc9a164177e8

  • SHA512

    0064a03bcca3b727f4425e32d6c12565c7defd6259f346d316d3f8610e0dc1b3c8cb7db0c7fb5b38725a4675734d40012eecc5cb1ee4cf9c219fffa5ff88ae41

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.aviner.co.za
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    NoLimits@

Signatures

  • Executes dropped EXE 1 IoCs
  • 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 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment confirmation.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment confirmation.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2684
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2668

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

    Filesize

    41KB

    MD5

    5d4073b2eb6d217c19f2b22f21bf8d57

    SHA1

    f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

    SHA256

    ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

    SHA512

    9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

    Filesize

    41KB

    MD5

    5d4073b2eb6d217c19f2b22f21bf8d57

    SHA1

    f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

    SHA256

    ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

    SHA512

    9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

  • memory/2668-139-0x0000000005AE0000-0x0000000005B7C000-memory.dmp

    Filesize

    624KB

  • memory/2668-135-0x0000000000000000-mapping.dmp

  • memory/2668-136-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/2668-140-0x00000000065A0000-0x0000000006762000-memory.dmp

    Filesize

    1.8MB

  • memory/2668-141-0x0000000006A70000-0x0000000006AD6000-memory.dmp

    Filesize

    408KB

  • memory/2668-142-0x0000000006FC0000-0x0000000006FCA000-memory.dmp

    Filesize

    40KB

  • memory/2684-133-0x0000000005070000-0x00000000050B4000-memory.dmp

    Filesize

    272KB

  • memory/2684-134-0x0000000005E90000-0x0000000005EB2000-memory.dmp

    Filesize

    136KB

  • memory/2684-132-0x0000000004D00000-0x0000000004D92000-memory.dmp

    Filesize

    584KB

  • memory/2684-131-0x00000000051B0000-0x0000000005754000-memory.dmp

    Filesize

    5.6MB

  • memory/2684-130-0x0000000000320000-0x000000000037A000-memory.dmp

    Filesize

    360KB