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Analysis

  • max time kernel
    146s
  • max time network
    152s
  • 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, 23:02

General

  • Target

    file.exe

  • Size

    1.4MB

  • MD5

    7bf3e054d1d4e7c0c6607444cba38191

  • SHA1

    5b2ae9be4c0370d0e80ef13f421a46dc2fd219c2

  • SHA256

    71c1eb652d1caf9c3f99843026fafba182f1d084b40564ece5915a46d864f015

  • SHA512

    99b0ad876704c4e66db41377d6a3e91bf86f61eeb21623560e319f790c2ba080c90f6acd25f9c862b6d45c5dd0d371b528b99716e32ba018ce00937566bbc6bd

  • SSDEEP

    24576:r20h5ljOYtHBWW2lONM9Krbe06fpiTKRHiuyrqA8mo1XTQB6iKBKhwCbr:r2wBOIBX+r9Ue06BiGhvyrhMxTQBF6C/

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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4616
    • C:\Users\Admin\AppData\Local\Temp\is-EO12R.tmp\file.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-EO12R.tmp\file.tmp" /SL5="$701F8,1194351,229888,C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:3536
      • 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:4804
        • C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\XEsdQAn.exe
          4⤵
          • Executes dropped EXE
          PID:4932
        • 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:3568
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im "OitFiles450.exe" /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:3488

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    2.0MB

    MD5

    ade723475c2dab13347fe98721cb14ae

    SHA1

    9a355c9836d936bddc29a35cd9e5eb59509d02f4

    SHA256

    2c54c0310c8f3b19b1862364c9a67a35ad09b10aee4cbf71ce4054982f37249d

    SHA512

    041f633538420346e76d2dc28fe7ce0ba6e8f7cb104ea500ea537ce32207696db95f599a0eb952587c05bc8190a01ad30bac5f6fc32a23377336674ea0b19268

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

    Filesize

    2.0MB

    MD5

    ade723475c2dab13347fe98721cb14ae

    SHA1

    9a355c9836d936bddc29a35cd9e5eb59509d02f4

    SHA256

    2c54c0310c8f3b19b1862364c9a67a35ad09b10aee4cbf71ce4054982f37249d

    SHA512

    041f633538420346e76d2dc28fe7ce0ba6e8f7cb104ea500ea537ce32207696db95f599a0eb952587c05bc8190a01ad30bac5f6fc32a23377336674ea0b19268

  • C:\Users\Admin\AppData\Local\Temp\is-5ME0L.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-EO12R.tmp\file.tmp

    Filesize

    779KB

    MD5

    70f2afb7b9313b21cd852a33bebe23d8

    SHA1

    6d17a890977a7434fed0ab6f75f125335af36687

    SHA256

    3f7c916efbd1fae45d696f00791a93d9ad2adf18b2ee66daddb30a9d431dfe18

    SHA512

    dd00d319a17ee6eed692aa80426ce5004be98e550fe567c3b5d725d931e258107eb7fe2a2a181ba97b90093674bb50880b78de10ec4e64b75ecde3b303cdc447

  • C:\Users\Admin\AppData\Local\Temp\is-EO12R.tmp\file.tmp

    Filesize

    779KB

    MD5

    70f2afb7b9313b21cd852a33bebe23d8

    SHA1

    6d17a890977a7434fed0ab6f75f125335af36687

    SHA256

    3f7c916efbd1fae45d696f00791a93d9ad2adf18b2ee66daddb30a9d431dfe18

    SHA512

    dd00d319a17ee6eed692aa80426ce5004be98e550fe567c3b5d725d931e258107eb7fe2a2a181ba97b90093674bb50880b78de10ec4e64b75ecde3b303cdc447

  • C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\XEsdQAn.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\XEsdQAn.exe

    Filesize

    72KB

    MD5

    3fb36cb0b7172e5298d2992d42984d06

    SHA1

    439827777df4a337cbb9fa4a4640d0d3fa1738b7

    SHA256

    27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

    SHA512

    6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

  • memory/4616-156-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/4616-137-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/4616-132-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/4804-143-0x0000000000400000-0x0000000001402000-memory.dmp

    Filesize

    16.0MB

  • memory/4804-148-0x0000000000400000-0x0000000001402000-memory.dmp

    Filesize

    16.0MB

  • memory/4804-149-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB

  • memory/4804-144-0x0000000000400000-0x0000000001402000-memory.dmp

    Filesize

    16.0MB

  • memory/4804-142-0x0000000000400000-0x0000000001402000-memory.dmp

    Filesize

    16.0MB

  • memory/4804-155-0x0000000000400000-0x0000000001402000-memory.dmp

    Filesize

    16.0MB