Analysis

  • max time kernel
    81s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    15-04-2022 16:07

General

  • Target

    a290620ed6254f949f4c6b93efa0979f038d4320f9f7cd6ae071229ae1627f59.exe

  • Size

    1.3MB

  • MD5

    88fb1d0c6b9d0c60bf81723d0ba9a2d7

  • SHA1

    8623027c23aa355fe8b158a86d106d47eb40a6c4

  • SHA256

    a290620ed6254f949f4c6b93efa0979f038d4320f9f7cd6ae071229ae1627f59

  • SHA512

    c70ae9ed013384cb14d078742642757bb29871ecbd69992083d40df91ec3a1a01e791ef38a8be4be0c589b082b6dca9cb075327c7616c8733dfc5fd5ae0530bc

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.accent.in
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    sp@123456

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 35 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
  • 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: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a290620ed6254f949f4c6b93efa0979f038d4320f9f7cd6ae071229ae1627f59.exe
    "C:\Users\Admin\AppData\Local\Temp\a290620ed6254f949f4c6b93efa0979f038d4320f9f7cd6ae071229ae1627f59.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:376
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rcYKHvgiPlaej" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF48D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1736
    • C:\Users\Admin\AppData\Local\Temp\a290620ed6254f949f4c6b93efa0979f038d4320f9f7cd6ae071229ae1627f59.exe
      "{path}"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1692

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpF48D.tmp

    Filesize

    1KB

    MD5

    e2571400deadc776ab138b596352c228

    SHA1

    030ee586871962bcbf0543fdc447ecee5011f362

    SHA256

    fa638cfe18b047a191ee0b42da3b1652926aabecc19ed29968719e868d7bc2e6

    SHA512

    663066d00522a49f0c63aa17ddfcc2d27f421d90567f0ad0d45a8e11b472f7e57a10e6a3601641e6bd0b77f98447d70ff28062bc2c89389b8a93993c718a0870

  • memory/376-55-0x0000000000540000-0x000000000055C000-memory.dmp

    Filesize

    112KB

  • memory/376-56-0x0000000005540000-0x000000000560C000-memory.dmp

    Filesize

    816KB

  • memory/376-54-0x00000000009E0000-0x0000000000B26000-memory.dmp

    Filesize

    1.3MB

  • memory/1692-62-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1692-59-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1692-60-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1692-63-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1692-65-0x000000000048146E-mapping.dmp

  • memory/1692-64-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1692-67-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1692-69-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1692-70-0x00000000007B0000-0x00000000007EE000-memory.dmp

    Filesize

    248KB

  • memory/1692-71-0x00000000064C0000-0x0000000006550000-memory.dmp

    Filesize

    576KB

  • memory/1692-72-0x0000000005025000-0x0000000005036000-memory.dmp

    Filesize

    68KB

  • memory/1736-57-0x0000000000000000-mapping.dmp