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Analysis

  • max time kernel
    119s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22/10/2024, 13:58

General

  • Target

    c28770a88ad997d80ca6f461893cd6f032f614a43c449f21e73df15e8a843105.exe

  • Size

    60KB

  • MD5

    90d83bbad8110780e90b8f0beab172f9

  • SHA1

    0ced0e716b07945787bf78ae6296a5f24bfdbe59

  • SHA256

    c28770a88ad997d80ca6f461893cd6f032f614a43c449f21e73df15e8a843105

  • SHA512

    92d4a6697644925176852c2b43bf297b16afadc2a993c135b5aa9df3c74a280bfb7cde883c6bf5c8b06202ff55168997dcf89ef2e791a3aeaca3cb09b6ac7707

  • SSDEEP

    768:3e1iZNbQAKrWGOkGQeN70ZqL378KBBmbUt4i:36iZNer5GQvkUath

Malware Config

Extracted

Family

redosdru

C2

http://xiazai.caobibibi.com:7744/8.77.dll

Signatures

  • Gh0st RAT payload 8 IoCs
  • Gh0strat

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

  • Redosdru

    Redosdru is a loader/downloader written in C++.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Drops file in System32 directory 9 IoCs
  • UPX packed file 10 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 4 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c28770a88ad997d80ca6f461893cd6f032f614a43c449f21e73df15e8a843105.exe
    "C:\Users\Admin\AppData\Local\Temp\c28770a88ad997d80ca6f461893cd6f032f614a43c449f21e73df15e8a843105.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2444
    • C:\Program Files (x86)\Windows NT\conhostdhfw.exe
      "C:\Program Files (x86)\Windows NT\conhostdhfw.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2312
  • C:\Program Files (x86)\Windows NT\conhostdhfw.exe
    "C:\Program Files (x86)\Windows NT\conhostdhfw.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2004
    • C:\Program Files (x86)\Windows NT\conhostdhfw.exe
      "C:\Program Files (x86)\Windows NT\conhostdhfw.exe"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious use of AdjustPrivilegeToken
      PID:2160
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2004 -s 344
      2⤵
      • Loads dropped DLL
      • Program crash
      PID:3052

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Windows NT\conhostdhfw.exe

    Filesize

    60KB

    MD5

    90d83bbad8110780e90b8f0beab172f9

    SHA1

    0ced0e716b07945787bf78ae6296a5f24bfdbe59

    SHA256

    c28770a88ad997d80ca6f461893cd6f032f614a43c449f21e73df15e8a843105

    SHA512

    92d4a6697644925176852c2b43bf297b16afadc2a993c135b5aa9df3c74a280bfb7cde883c6bf5c8b06202ff55168997dcf89ef2e791a3aeaca3cb09b6ac7707

  • C:\Program Files\AppPatch\8.77.dll

    Filesize

    240KB

    MD5

    0a74e0bffbce3cc5466796739cfdeb44

    SHA1

    c3b50df0a1de18b7053bff1b0293f5512f824055

    SHA256

    cdabc33a27b23c2060637193a4cbad94e16d31e6a4df7d67bdc6b63c1d056b30

    SHA512

    9fb4f39d95820f63da2d8767b76f317c512a8db1b86428f04baf4b163d0deaee5c4726c9f66807a3b1c223d575557fabc88e0cde73a4561b304f6edd76b8cc36

  • C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

  • C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    242B

    MD5

    1e481531d370555005513c35d35df417

    SHA1

    38683f3bc01ad479fa10fbd1b921a5a722f6ac42

    SHA256

    a92c7b5f0c76e0b8840088ae9c0e9eb611027089e0d4a90be1484b348ec5a409

    SHA512

    6bfe3588d3b3bccca48e9c17bfd028c5c992c66859509aac8347c6eedab0126bdd0813c155b721e097f9cb4dc24ccd8edd42ce41aa564232111e8cca413bbec6

  • C:\Windows\Temp\TarEA35.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/2004-44-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB

  • memory/2004-33-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB

  • memory/2312-21-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB

  • memory/2312-26-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB

  • memory/2312-24-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB

  • memory/2312-25-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB

  • memory/2444-10-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB

  • memory/2444-8-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB

  • memory/2444-9-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB

  • memory/2444-5-0x0000000010000000-0x000000001034B000-memory.dmp

    Filesize

    3.3MB