Analysis

  • max time kernel
    157s
  • max time network
    163s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    04-11-2021 20:57

General

  • Target

    Thu181d864eb8.exe

  • Size

    172KB

  • MD5

    7c3cf9ce3ffb1e5dd48896fdc9080bab

  • SHA1

    34b4976f8f83c1e0a9d277d2a103a61616178728

  • SHA256

    b3049882301853eed2aa8c5ac99010dd84292d7e092eb6f4311fa535716f5d83

  • SHA512

    52ec2ec50a2d4ca4f29e6b611176e37fee8693a7c34ec2197ec2ad250d525f607c3d4d70534520d1f5c16fd3f9231d261b00f8c3746d033eab1ed36cdde07473

Malware Config

Signatures

  • Modifies Windows Defender Real-time Protection settings ⋅ 3 TTPs
  • suricata: ET MALWARE Win32/Unk.HRESQ! MultiDownloader Checkin

    suricata: ET MALWARE Win32/Unk.HRESQ! MultiDownloader Checkin

  • Downloads MZ/PE file
  • Executes dropped EXE ⋅ 1 IoCs
  • Checks computer location settings ⋅ 2 TTPs 1 IoCs

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

  • Loads dropped DLL ⋅ 1 IoCs
  • Reads user/profile data of web browsers ⋅ 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service ⋅ 2 IoCs

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

  • Enumerates physical storage devices ⋅ 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash ⋅ 1 IoCs
  • Suspicious behavior: EnumeratesProcesses ⋅ 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam ⋅ 1 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 1 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Thu181d864eb8.exe
    "C:\Users\Admin\AppData\Local\Temp\Thu181d864eb8.exe"
    Checks computer location settings
    Loads dropped DLL
    Suspicious behavior: EnumeratesProcesses
    Suspicious use of WriteProcessMemory
    PID:516
    • C:\Users\Admin\Pictures\Adobe Films\EG0qJ5gjFDFeyqHCxtCkxI1Y.exe
      "C:\Users\Admin\Pictures\Adobe Films\EG0qJ5gjFDFeyqHCxtCkxI1Y.exe"
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:1800
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 516 -s 1408
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      PID:1540

Network

MITRE ATT&CK Matrix

Command and Control

    Credential Access

    Execution

      Exfiltration

        Impact

          Initial Access

            Lateral Movement

              Privilege Escalation

                Replay Monitor

                00:00 00:00

                Downloads

                • C:\Users\Admin\Pictures\Adobe Films\EG0qJ5gjFDFeyqHCxtCkxI1Y.exe
                  MD5

                  3f22bd82ee1b38f439e6354c60126d6d

                  SHA1

                  63b57d818f86ea64ebc8566faeb0c977839defde

                  SHA256

                  265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

                  SHA512

                  b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

                • \Users\Admin\Pictures\Adobe Films\EG0qJ5gjFDFeyqHCxtCkxI1Y.exe
                  MD5

                  3f22bd82ee1b38f439e6354c60126d6d

                  SHA1

                  63b57d818f86ea64ebc8566faeb0c977839defde

                  SHA256

                  265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

                  SHA512

                  b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

                • memory/516-55-0x0000000074F21000-0x0000000074F23000-memory.dmp
                • memory/516-56-0x0000000003DD0000-0x0000000003F1A000-memory.dmp
                • memory/1540-60-0x0000000000000000-mapping.dmp
                • memory/1540-61-0x00000000002D0000-0x0000000000330000-memory.dmp
                • memory/1800-58-0x0000000000000000-mapping.dmp