Analysis

  • max time kernel
    151s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    18-11-2021 23:32

General

  • Target

    Setup.exe

  • Size

    554KB

  • MD5

    d9552a15a61f255df3206b63ee0383be

  • SHA1

    7c76e2edcf184b90d40003dac71b08e3a3ed2e8c

  • SHA256

    0cdd906491990c6ba9c24bdd60172057587859a8e649ba7f4b51fece9a0fdac6

  • SHA512

    0ce1db824d226df28177b6e5394fa1f8483333583d8332680d4cf0cfc8627a53d69c1c857b319dd200e0f38bf88d445a4289d78472fe3167cc39ae6a85f21599

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 use of AdjustPrivilegeToken ⋅ 1 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    Checks computer location settings
    Loads dropped DLL
    Suspicious behavior: EnumeratesProcesses
    Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Users\Admin\Pictures\Adobe Films\y1_kgpUskgezn9eUT2SsE9W5.exe
      "C:\Users\Admin\Pictures\Adobe Films\y1_kgpUskgezn9eUT2SsE9W5.exe"
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:960
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1644 -s 1476
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1748

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\y1_kgpUskgezn9eUT2SsE9W5.exe
                  MD5

                  3f22bd82ee1b38f439e6354c60126d6d

                  SHA1

                  63b57d818f86ea64ebc8566faeb0c977839defde

                  SHA256

                  265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

                  SHA512

                  b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

                • \Users\Admin\Pictures\Adobe Films\y1_kgpUskgezn9eUT2SsE9W5.exe
                  MD5

                  3f22bd82ee1b38f439e6354c60126d6d

                  SHA1

                  63b57d818f86ea64ebc8566faeb0c977839defde

                  SHA256

                  265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

                  SHA512

                  b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

                • memory/960-58-0x0000000000000000-mapping.dmp
                • memory/1644-55-0x0000000075B71000-0x0000000075B73000-memory.dmp
                • memory/1644-56-0x0000000003CB0000-0x0000000003E74000-memory.dmp
                • memory/1748-60-0x0000000000000000-mapping.dmp
                • memory/1748-61-0x00000000003B0000-0x00000000003B1000-memory.dmp