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Analysis

  • max time kernel
    112s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/01/2023, 18:10

General

  • Target

    89961de645afe5c55dc9eeeb1394cc92d987a63b52820c05be9bd314f0e1aff0.exe

  • Size

    1.5MB

  • MD5

    ca048aecf3863405e9cc73b663ea2c9c

  • SHA1

    4afbe34921aa6a088f12b9a82356def3b230168d

  • SHA256

    89961de645afe5c55dc9eeeb1394cc92d987a63b52820c05be9bd314f0e1aff0

  • SHA512

    7069400fdb2ba7b875407e0b8bcb5ceef974299147ca986a099a81fefccbb940534f17211ad4641b994abba3fb52816100b2b55591538b613b9f7662d2700df8

  • SSDEEP

    24576:r20h5REdBGY0vgBnT4WlBu/uUfCMgD8f/Heh4vOhwCbr:r2wWdQ9mnTHOuUUD83Heh4m6Cbr

Malware Config

Extracted

Family

gcleaner

C2

45.139.105.171

85.31.46.167

107.182.129.235

171.22.30.106

Signatures

  • GCleaner

    GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 17 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\89961de645afe5c55dc9eeeb1394cc92d987a63b52820c05be9bd314f0e1aff0.exe
    "C:\Users\Admin\AppData\Local\Temp\89961de645afe5c55dc9eeeb1394cc92d987a63b52820c05be9bd314f0e1aff0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Users\Admin\AppData\Local\Temp\is-6QH7G.tmp\89961de645afe5c55dc9eeeb1394cc92d987a63b52820c05be9bd314f0e1aff0.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-6QH7G.tmp\89961de645afe5c55dc9eeeb1394cc92d987a63b52820c05be9bd314f0e1aff0.tmp" /SL5="$A0048,1265392,229888,C:\Users\Admin\AppData\Local\Temp\89961de645afe5c55dc9eeeb1394cc92d987a63b52820c05be9bd314f0e1aff0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:2844
      • C:\Program Files (x86)\Oit Files\OitFiles450.exe
        "C:\Program Files (x86)\Oit Files\OitFiles450.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4952
        • C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\eMhdYA.exe
          4⤵
          • Executes dropped EXE
          PID:2156
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /im "OitFiles450.exe" /f & erase "C:\Program Files (x86)\Oit Files\OitFiles450.exe" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4812
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "OitFiles450.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:4032

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Oit Files\OitFiles450.exe

    Filesize

    2.1MB

    MD5

    5b08f5b7f826c53d7b1e7da4b8284235

    SHA1

    9560d73000735414effa1b8b4f97a2320300148f

    SHA256

    d6d285c4f09348d4df0c4feb761ba1336c41ba03e882fe051531240ae72d273e

    SHA512

    71e6968e79bcbef9e32d992901deb2a5b68c96af2911147b5d43b2948123603093481b973e09044844b1f281983b76cf57caeb8747d82caf7c6d7b9d90fa524e

  • C:\Program Files (x86)\Oit Files\OitFiles450.exe

    Filesize

    2.1MB

    MD5

    5b08f5b7f826c53d7b1e7da4b8284235

    SHA1

    9560d73000735414effa1b8b4f97a2320300148f

    SHA256

    d6d285c4f09348d4df0c4feb761ba1336c41ba03e882fe051531240ae72d273e

    SHA512

    71e6968e79bcbef9e32d992901deb2a5b68c96af2911147b5d43b2948123603093481b973e09044844b1f281983b76cf57caeb8747d82caf7c6d7b9d90fa524e

  • C:\Users\Admin\AppData\Local\Temp\is-6QH7G.tmp\89961de645afe5c55dc9eeeb1394cc92d987a63b52820c05be9bd314f0e1aff0.tmp

    Filesize

    779KB

    MD5

    70f2afb7b9313b21cd852a33bebe23d8

    SHA1

    6d17a890977a7434fed0ab6f75f125335af36687

    SHA256

    3f7c916efbd1fae45d696f00791a93d9ad2adf18b2ee66daddb30a9d431dfe18

    SHA512

    dd00d319a17ee6eed692aa80426ce5004be98e550fe567c3b5d725d931e258107eb7fe2a2a181ba97b90093674bb50880b78de10ec4e64b75ecde3b303cdc447

  • C:\Users\Admin\AppData\Local\Temp\is-6QH7G.tmp\89961de645afe5c55dc9eeeb1394cc92d987a63b52820c05be9bd314f0e1aff0.tmp

    Filesize

    779KB

    MD5

    70f2afb7b9313b21cd852a33bebe23d8

    SHA1

    6d17a890977a7434fed0ab6f75f125335af36687

    SHA256

    3f7c916efbd1fae45d696f00791a93d9ad2adf18b2ee66daddb30a9d431dfe18

    SHA512

    dd00d319a17ee6eed692aa80426ce5004be98e550fe567c3b5d725d931e258107eb7fe2a2a181ba97b90093674bb50880b78de10ec4e64b75ecde3b303cdc447

  • C:\Users\Admin\AppData\Local\Temp\is-UQJDN.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\eMhdYA.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\eMhdYA.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • memory/2700-137-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/2700-152-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/2700-157-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/2700-132-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/4952-142-0x0000000000400000-0x0000000001411000-memory.dmp

    Filesize

    16.1MB

  • memory/4952-148-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB

  • memory/4952-153-0x0000000000400000-0x0000000001411000-memory.dmp

    Filesize

    16.1MB

  • memory/4952-144-0x0000000000400000-0x0000000001411000-memory.dmp

    Filesize

    16.1MB

  • memory/4952-143-0x0000000000400000-0x0000000001411000-memory.dmp

    Filesize

    16.1MB

  • memory/4952-156-0x0000000000400000-0x0000000001411000-memory.dmp

    Filesize

    16.1MB