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Analysis

  • max time kernel
    131s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/11/2022, 08:13

General

  • Target

    8a3b6b9f22ffa8f61a095f6f95b85caa91ebe1811e06d55ca8b2413d1afa43b3.exe

  • Size

    18KB

  • MD5

    0a6ef0779b91000bc5c1a84b4843f3b0

  • SHA1

    ffacae95ce6ccf791688bacccb99c8b07f44cabb

  • SHA256

    8a3b6b9f22ffa8f61a095f6f95b85caa91ebe1811e06d55ca8b2413d1afa43b3

  • SHA512

    0027b2d3a8549ca5077005db0b7685c3de8648541ef343e08137ae741b9d09b3d7015c4d60165d80a8924c17f1da0e088d6ad8191f4b876bbe41a047a34b6b18

  • SSDEEP

    192:Mcbkdw86m00Q96odRNyCiq/xEDvJ5Ao5iFVpUX7ZUSoQkC4duC8ffb1Ettz:BkSnmQgodRN5iqEDvTwFVm91kChhEttz

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8a3b6b9f22ffa8f61a095f6f95b85caa91ebe1811e06d55ca8b2413d1afa43b3.exe
    "C:\Users\Admin\AppData\Local\Temp\8a3b6b9f22ffa8f61a095f6f95b85caa91ebe1811e06d55ca8b2413d1afa43b3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4880
    • C:\Users\Admin\AppData\Local\Temp\viewpdf_updater.exe
      "C:\Users\Admin\AppData\Local\Temp\viewpdf_updater.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:2060
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 62680
        3⤵
        • Program crash
        PID:3488

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    18KB

    MD5

    52cc037c69c23e279f4b7082732c9175

    SHA1

    5d68f18513e84d4f0cc5a63c6ef5201f0d730945

    SHA256

    78f7c647bb132fbdc1c561ddc3cc4001ba5989411ee7006f511941259578440b

    SHA512

    076ca07eba001f2831c414ee3a7b366970e08f335ebde16504bed5e100c1e0caa896f6a8b2a7f6c411865873445a591011e18e618a585b3e6c3e47384e0107a5

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

    Filesize

    18KB

    MD5

    52cc037c69c23e279f4b7082732c9175

    SHA1

    5d68f18513e84d4f0cc5a63c6ef5201f0d730945

    SHA256

    78f7c647bb132fbdc1c561ddc3cc4001ba5989411ee7006f511941259578440b

    SHA512

    076ca07eba001f2831c414ee3a7b366970e08f335ebde16504bed5e100c1e0caa896f6a8b2a7f6c411865873445a591011e18e618a585b3e6c3e47384e0107a5

  • memory/2060-136-0x0000000000400000-0x0000000000408000-memory.dmp

    Filesize

    32KB

  • memory/4880-133-0x0000000000400000-0x0000000000408000-memory.dmp

    Filesize

    32KB

  • memory/4880-137-0x0000000000400000-0x0000000000408000-memory.dmp

    Filesize

    32KB