Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    28-12-2023 03:57

General

  • Target

    c1ffe666a1dfdb35dc3c5d4297025d19.exe

  • Size

    368KB

  • MD5

    c1ffe666a1dfdb35dc3c5d4297025d19

  • SHA1

    47ccdd6630e0ca19c2da66d7afe79f8f85a60b5d

  • SHA256

    403e90d62f1c2185fd1a93cb8d25036eee7685e57d2dd652456cffd12d9ae7e0

  • SHA512

    18a05d479674d54bb9d1439c7ace24e24caf32ef750c85cefd66b94039d33c4f1c7cd46cbf26f5310e316b35fec1e4e358af51f2fbde5d74451e831bf2acdf36

  • SSDEEP

    6144:DRAuog7deUAjpXZii1urqy4FVRO4lqaGClZFpRQwg5iwatmzZ/pPQ0:bZCpkuS4FV9l0Cl7nxgtzZBQ0

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 4 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 16 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c1ffe666a1dfdb35dc3c5d4297025d19.exe
    "C:\Users\Admin\AppData\Local\Temp\c1ffe666a1dfdb35dc3c5d4297025d19.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1152
    • C:\Users\Admin\AppData\Local\Temp\006.exe
      "C:\Users\Admin\AppData\Local\Temp\006.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2876
      • C:\Users\Admin\AppData\Local\Temp\006.exe
        "C:\Users\Admin\AppData\Local\Temp\006.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2852
    • C:\Users\Admin\AppData\Local\Temp\Able2Extract_Keygen.exe
      "C:\Users\Admin\AppData\Local\Temp\Able2Extract_Keygen.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:3008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    99c2131baadfd38f49ad71d610101b37

    SHA1

    d13aab4189b7a89ed2562f541f799497cc34fd13

    SHA256

    34371609d79bd79e126ec90cf3e277f8d6889023fc2c4d67431c91be2cd91191

    SHA512

    decd423c2b14d7af01d2f7c0d402ba8775f6d274e89f8cc9109b56e4bac352b21b7e7c17081bece58f880f1ac5d84d5678b77f0a1ea4ee4ffedda840d4186f8e

  • C:\Users\Admin\AppData\Local\Temp\Able2Extract_Keygen.exe

    Filesize

    93KB

    MD5

    4aa8180e3beb4b6b8a43095f52e64cda

    SHA1

    a25fe2037588e56bbf6c4cc343225badb82fcdf4

    SHA256

    53c7d05c2923c8596538f11f01ae6de5b2b93cc2bb48830ce047d9b600096d4b

    SHA512

    ec586483d071ab70379eb22e2eac98d9d0bd98cf8a7e95d9c74394cdb3a176aec6b078d030439908be84b32fe7d0f3434ee4fa9c773ffc152669edc88333f279

  • C:\Users\Admin\AppData\Local\Temp\Able2Extract_Keygen.exe

    Filesize

    92KB

    MD5

    9a2f8b61e9e2d6c4c534ff795523e4c5

    SHA1

    1dee24f1a1cd0c9f9ee137be2d252f9430033a61

    SHA256

    44ab29287462c19cb7319b0ab8a1a237ffb8c087b6a8134e505c457a919bfee0

    SHA512

    1d01402f4c89e89bf2787484bb723ab14222c09d01af40a439afd7402b4093e027afc5cf2e9c5f623759cdc5e08a708b72581bf42290f1e5fb430ae38488fca1

  • C:\Users\Admin\AppData\Local\Temp\CabAFE1.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\TarB070.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • \Users\Admin\AppData\Local\Temp\006.exe

    Filesize

    168KB

    MD5

    e63538bc7a919c82168acde031f1d0f9

    SHA1

    ab1363fcb0be44ed3a33dd96a9ab5400b04fe255

    SHA256

    0265c56c111e69be3b536e670d302371b79ba8f4669b46bbb4f7a2972d99ae50

    SHA512

    cbee37b3e70271e8b3af3c086df6795eb45e7813d0182c83166a945a9d98b7acbd23fabc40348903d07f0abca92b0d25d411f16949b612fb104315d049a9752e

  • memory/2852-32-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2852-41-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2852-44-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2852-122-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3008-30-0x0000000073BD0000-0x000000007417B000-memory.dmp

    Filesize

    5.7MB

  • memory/3008-43-0x0000000073BD0000-0x000000007417B000-memory.dmp

    Filesize

    5.7MB