Analysis

  • max time kernel
    91s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:52

General

  • Target

    RFQ12EAS.scr

  • Size

    844KB

  • MD5

    781182974459dd7e9b6ac48c89596f03

  • SHA1

    360f5752a562195b4c76c41d31855399477b4590

  • SHA256

    1d1f1118f0abad06563b370709b721291cc6b0a681486d7432738a8e2ddd02b5

  • SHA512

    7b15345eb1c50f5d246d4c2b1e748fc5086af2505385cfafa2970ea14fc785c2dae354227a9907d557753e678a8cba892d2e014aa549cf71a189b78e32ba7d1b

Malware Config

Signatures

  • 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
  • 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 WriteProcessMemory 3 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ12EAS.scr
    "C:\Users\Admin\AppData\Local\Temp\RFQ12EAS.scr" /S
    1⤵
    • Checks computer location settings
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:2840
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ffJsfgOHYD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC19F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4716

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC19F.tmp
    Filesize

    1KB

    MD5

    754d9e68ec645ea6053b0b2e4d27ea18

    SHA1

    a9622356c906dfa1ad47c98543f350b95734ef80

    SHA256

    cc02854fc57b6e60f890650a56450d9210e3276c9a6f871e716fbc15af76293a

    SHA512

    06ef78420ade33e722315fe9ae0b053d032a000a48390083aaa1ef3ceb1636b495ceb65d3a52eeb69757830a631c2ae61fa8dcaf4e517843b69754b5ecf1cc3d

  • memory/2840-130-0x0000000000DC0000-0x0000000000E9C000-memory.dmp
    Filesize

    880KB

  • memory/2840-131-0x0000000009EE0000-0x0000000009F72000-memory.dmp
    Filesize

    584KB

  • memory/2840-132-0x0000000005ED0000-0x0000000005F6C000-memory.dmp
    Filesize

    624KB

  • memory/2840-133-0x0000000006B90000-0x0000000007134000-memory.dmp
    Filesize

    5.6MB

  • memory/2840-136-0x0000000007320000-0x0000000007386000-memory.dmp
    Filesize

    408KB

  • memory/2840-137-0x0000000006820000-0x000000000682A000-memory.dmp
    Filesize

    40KB

  • memory/4716-134-0x0000000000000000-mapping.dmp