Analysis

  • max time kernel
    134s
  • max time network
    32s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 23:23

General

  • Target

    61bae6cd3276abc4b0423a37237c04cf204dfcfdd9fde931c5d3681ff9e8788b.exe

  • Size

    235KB

  • MD5

    3921ca628b5df93d7ce81cd0641710b9

  • SHA1

    9b202dd88fe3d728983994813d2575ca631813b7

  • SHA256

    61bae6cd3276abc4b0423a37237c04cf204dfcfdd9fde931c5d3681ff9e8788b

  • SHA512

    3dec5c0af5d1891af97f319187b3cd69d88abc1b9a17adbe83d1e5519867e052c2490f4e5209f491f91d928ef1ecd5eea2203522de1bb20ada039d4c5cd429d5

  • SSDEEP

    6144:LiOdmVPmM46lcDoFlAUVtiawv/iQAQaytn86ZkRBowjXDKA:LiOd4cDoFltVfw3iRUrknowjTf

Malware Config

Signatures

  • Gh0st RAT payload 1 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • Executes dropped EXE 1 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\61bae6cd3276abc4b0423a37237c04cf204dfcfdd9fde931c5d3681ff9e8788b.exe
    "C:\Users\Admin\AppData\Local\Temp\61bae6cd3276abc4b0423a37237c04cf204dfcfdd9fde931c5d3681ff9e8788b.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1812
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\run_kl_file.bat" "
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Users\Admin\AppData\Local\Temp\ki1B03D.tmp
        C:\Users\Admin\AppData\Local\Temp\ki1B03D.tmp
        3⤵
        • Executes dropped EXE
        • Sets DLL path for service in the registry
        • Drops file in System32 directory
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:468
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ins2EFE.tmp.msi" /quiet
      2⤵
      • Enumerates connected drives
      • Suspicious use of AdjustPrivilegeToken
      PID:1808
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\run_dws_file.bat" "
      2⤵
        PID:1500
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp_ext_favurl_cab.bat" "
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:432
        • C:\Windows\SysWOW64\expand.exe
          expand.exe "C:\Users\Admin\AppData\Local\Temp\favorites_url.cab" -F:*.* "C:\Users\Admin\Favorites"
          3⤵
          • Drops file in Windows directory
          PID:1972
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\61BAE6~1.EXE > nul
        2⤵
        • Deletes itself
        PID:540
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Enumerates connected drives
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:820
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 348C5EDFA4A00B47C049DC4989A159CE
        2⤵
        • Loads dropped DLL
        PID:112
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k imgsvc
      1⤵
        PID:1620

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\ins2EFE.tmp.msi

        Filesize

        123.0MB

        MD5

        cb9ffa96ec2212d183c546afde8d98cb

        SHA1

        6e3d624e062cdbcf186a0a4bfd88e1e4fdae048d

        SHA256

        3ccd96f6724d85214787a8cdc4bfb46878f1304c397e2b83122a46d3b61f1e49

        SHA512

        e22249479d93c20c7ecc4cc8842afcfaf02d2a0ee302ae7432ea22114a67406c06ed70a959bb8d02614d6699f9170a5c5bf9d6801bdbedecd93f2ddd0c1cd8ac

      • C:\Users\Admin\AppData\Local\Temp\ki1B03D.tmp

        Filesize

        123.0MB

        MD5

        1d4fee5773747013c7788bc5bbaf7e24

        SHA1

        e4251107af96a8859c43da2045cebe66ee41f0ad

        SHA256

        bb034303edaa4c7b14fd4a8f8f5dc28ae0d162d0433eebd4ee6798b4bbce609e

        SHA512

        6f71b1b43dd0687a6755e3c5f48cefc851ed43783a3b631175a1c64117da3f1fe7188ce0b612362152a401d6969348381d3c027c01386df93b70b5ea3884cbf7

      • C:\Users\Admin\AppData\Local\Temp\ki1B03D.tmp

        Filesize

        123.0MB

        MD5

        1d4fee5773747013c7788bc5bbaf7e24

        SHA1

        e4251107af96a8859c43da2045cebe66ee41f0ad

        SHA256

        bb034303edaa4c7b14fd4a8f8f5dc28ae0d162d0433eebd4ee6798b4bbce609e

        SHA512

        6f71b1b43dd0687a6755e3c5f48cefc851ed43783a3b631175a1c64117da3f1fe7188ce0b612362152a401d6969348381d3c027c01386df93b70b5ea3884cbf7

      • C:\Users\Admin\AppData\Local\Temp\run_dws_file.bat

        Filesize

        57B

        MD5

        e69a6ff5fc89d626f09b965e65247871

        SHA1

        5c57fdb4583aca486679cccef6bb85d04878c30a

        SHA256

        6fa3113a40c1a606249e03511d9ca857f080a1493843abf9973fc574ad42d689

        SHA512

        5d9ba18db3824d0e0f0b7efd78f17e0043e04c8bcaceccab88fa77487e5ebd91c0a0230b893f3616dca361ce2e51295463ea16b03bc4a726859e1f088fbd0cce

      • C:\Users\Admin\AppData\Local\Temp\run_kl_file.bat

        Filesize

        45B

        MD5

        bfa46da4c876bdc048115f958d4ba19b

        SHA1

        28d6b72a621bbf71a89a8a739870cd35e3465d08

        SHA256

        4aed99e6a053a61a2e14ff73958d3d758ebeaddf4022799e4c011c0d174daa18

        SHA512

        4d486bae80674dc74812a0acd82d81743bb4cb2dea0a9fea0ffead1340cdc462b7e8d6a2dbf45e9e2d9fc59338b78f0b287ff405b13b20283db1ab3b05af737a

      • C:\Users\Admin\AppData\Local\Temp\tmp_ext_favurl_cab.bat

        Filesize

        98B

        MD5

        8663de6fce9208b795dc913d1a6a3f5b

        SHA1

        882193f208cf012eaf22eeaa4fef3b67e7c67c15

        SHA256

        2909ea8555f2fc19097c1070a1da8fcfd6dc6886aa1d99d7e0c05e53feeb5b61

        SHA512

        9381063e0f85e874be54ae22675393b82c6ab54b223090148e4acbeff6f22393c96c90b83d6538461b695528af01d1f1231cf5dc719f07d6168386974b490688

      • C:\Windows\Installer\MSI57F1.tmp

        Filesize

        48KB

        MD5

        9067aad412defc0d2888479609041392

        SHA1

        36cfffc3bafeb24f88ad5886ca5787ca008b6ba9

        SHA256

        99f4e00b6908057a2fe5067ff6c8b6e32b5c07558ab79139dc4b998f1da4b517

        SHA512

        e69f259d78b02e6c1a5d9c45898b59372329a5288fff655dd741353f112b2b8eed18b01caa2bf312a91f5e314e1c0b036321b37c8efbebdcf3650ba6b12dee6a

      • C:\Windows\Installer\MSI5997.tmp

        Filesize

        48KB

        MD5

        9067aad412defc0d2888479609041392

        SHA1

        36cfffc3bafeb24f88ad5886ca5787ca008b6ba9

        SHA256

        99f4e00b6908057a2fe5067ff6c8b6e32b5c07558ab79139dc4b998f1da4b517

        SHA512

        e69f259d78b02e6c1a5d9c45898b59372329a5288fff655dd741353f112b2b8eed18b01caa2bf312a91f5e314e1c0b036321b37c8efbebdcf3650ba6b12dee6a

      • \??\c:\users\admin\appdata\local\temp\favorites_url.cab

        Filesize

        425B

        MD5

        da68bc3b7c3525670a04366bc55629f5

        SHA1

        15fda47ecfead7db8f7aee6ca7570138ba7f1b71

        SHA256

        73f3605192b676c92649034768378909a19d13883a7ea6f8ba1b096c78ffadb5

        SHA512

        6fee416affcb6a74621479697bca6f14f5429b00de3aa595abe3c60c6b2e094877b59f8783bbe7bdd567fa565d0630bb02def5603f8f0ea92fe8f2c3ac5383c0

      • \??\c:\windows\SysWOW64\6ovudn.dll

        Filesize

        48.1MB

        MD5

        2bf824f5f142b4c33400abf21cc9396f

        SHA1

        69862ea88104204766ddfc798d7ba2d86d628eec

        SHA256

        63613dd04ea94e88d051cf80fcc8ff67f33c842cd1ccbcc2dea46609b1ffac20

        SHA512

        4130093984a5a1b6bdc652b35ef48da34cf4b23d8420c0da96e72c31d3defe5c44e34761b4152e73b43b76e3c58c5d36f9646140fc4c11aebb2c036e2e968bd4

      • \Users\Admin\AppData\Local\Temp\ki1B03D.tmp

        Filesize

        123.0MB

        MD5

        1d4fee5773747013c7788bc5bbaf7e24

        SHA1

        e4251107af96a8859c43da2045cebe66ee41f0ad

        SHA256

        bb034303edaa4c7b14fd4a8f8f5dc28ae0d162d0433eebd4ee6798b4bbce609e

        SHA512

        6f71b1b43dd0687a6755e3c5f48cefc851ed43783a3b631175a1c64117da3f1fe7188ce0b612362152a401d6969348381d3c027c01386df93b70b5ea3884cbf7

      • \Users\Admin\AppData\Local\Temp\ki1B03D.tmp

        Filesize

        123.0MB

        MD5

        1d4fee5773747013c7788bc5bbaf7e24

        SHA1

        e4251107af96a8859c43da2045cebe66ee41f0ad

        SHA256

        bb034303edaa4c7b14fd4a8f8f5dc28ae0d162d0433eebd4ee6798b4bbce609e

        SHA512

        6f71b1b43dd0687a6755e3c5f48cefc851ed43783a3b631175a1c64117da3f1fe7188ce0b612362152a401d6969348381d3c027c01386df93b70b5ea3884cbf7

      • \Windows\Installer\MSI57F1.tmp

        Filesize

        48KB

        MD5

        9067aad412defc0d2888479609041392

        SHA1

        36cfffc3bafeb24f88ad5886ca5787ca008b6ba9

        SHA256

        99f4e00b6908057a2fe5067ff6c8b6e32b5c07558ab79139dc4b998f1da4b517

        SHA512

        e69f259d78b02e6c1a5d9c45898b59372329a5288fff655dd741353f112b2b8eed18b01caa2bf312a91f5e314e1c0b036321b37c8efbebdcf3650ba6b12dee6a

      • \Windows\Installer\MSI5997.tmp

        Filesize

        48KB

        MD5

        9067aad412defc0d2888479609041392

        SHA1

        36cfffc3bafeb24f88ad5886ca5787ca008b6ba9

        SHA256

        99f4e00b6908057a2fe5067ff6c8b6e32b5c07558ab79139dc4b998f1da4b517

        SHA512

        e69f259d78b02e6c1a5d9c45898b59372329a5288fff655dd741353f112b2b8eed18b01caa2bf312a91f5e314e1c0b036321b37c8efbebdcf3650ba6b12dee6a

      • memory/468-68-0x0000000023560000-0x0000000023595BE0-memory.dmp

        Filesize

        214KB

      • memory/820-72-0x000007FEFB881000-0x000007FEFB883000-memory.dmp

        Filesize

        8KB

      • memory/900-67-0x0000000023560000-0x0000000023596000-memory.dmp

        Filesize

        216KB

      • memory/900-62-0x0000000023560000-0x0000000023596000-memory.dmp

        Filesize

        216KB

      • memory/1812-80-0x0000000000400000-0x0000000000480000-memory.dmp

        Filesize

        512KB

      • memory/1812-54-0x00000000753F1000-0x00000000753F3000-memory.dmp

        Filesize

        8KB

      • memory/1812-55-0x0000000000400000-0x0000000000480000-memory.dmp

        Filesize

        512KB

      • memory/1812-60-0x00000000008C0000-0x00000000008D0000-memory.dmp

        Filesize

        64KB

      • memory/1812-56-0x0000000000020000-0x0000000000023000-memory.dmp

        Filesize

        12KB