Analysis

  • max time kernel
    175s
  • max time network
    197s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    01-01-2024 12:18

General

  • Target

    1a858eefea9b6c58ad702888fec73660b725d4adff15a7900f39bea5bdff1eb3.exe

  • Size

    1.3MB

  • MD5

    c33f5f08777fec1841d592fb52247ab3

  • SHA1

    754b6f9f50942326a1bfc4a48cbe9470d4d0efd2

  • SHA256

    1a858eefea9b6c58ad702888fec73660b725d4adff15a7900f39bea5bdff1eb3

  • SHA512

    8b7f0c9bb8165ca0b8f52ee1874724114d3db43933b7335856015abd91597f2168dbea4972fed10554a37b708dc760e8507a586b4fe4b3adf7c76ad8ffd6f325

  • SSDEEP

    24576:Qak/7Nk4RZqaoKZu0zoFmDcpii9iGn+66rLfJIgtEqPILWz8oDqE:Qak/zZu+k0WdEacJRIo+E

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

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

  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1a858eefea9b6c58ad702888fec73660b725d4adff15a7900f39bea5bdff1eb3.exe
    "C:\Users\Admin\AppData\Local\Temp\1a858eefea9b6c58ad702888fec73660b725d4adff15a7900f39bea5bdff1eb3.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2704
    • C:\Users\Admin\AppData\Local\Temp\1a858eefea9b6c58ad702888fec73660b725d4adff15a7900f39bea5bdff1eb3.exe
      "C:\Users\Admin\AppData\Local\Temp\1a858eefea9b6c58ad702888fec73660b725d4adff15a7900f39bea5bdff1eb3.exe" Master
      2⤵
      • Drops file in Drivers directory
      • Enumerates connected drives
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" http://www.178stu.com/my.htm
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:112
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:112 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:1748

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

    6708dadb224733acfd6a60fbf36ec7d9

    SHA1

    741cb321e6d29b93109d3c32ed5075e31542d480

    SHA256

    97597571a73157de4336850bcc3cf8b0c33d72227a398dab3b01190c25503357

    SHA512

    132a32bd36f572ee614641e474ccafcd615e8fe8cbb11cb6d92de8956cdd461fb45ca506bb1342da90d038d9f481038464c7fb7b98346cda2d667749b64749ed

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

    Filesize

    344B

    MD5

    3a5ef29c26a8a0eafa52129200b7c045

    SHA1

    743666111758e6d798314b5c5b066520c2e20ff0

    SHA256

    f7cc64a7415c790340a790cf86137aea57975c66a8984d63bf3149fe779c0980

    SHA512

    48ef6229efd5e54214a96a9e8a8c8fe87b4817a27668b5918565a0b9744cbb038ae2024669f612aaddc78bc38cabbf7f89b0726f87a063fedc2bb24815f1b539

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

    Filesize

    344B

    MD5

    0d960e909138f0ff852b8c4904f763b5

    SHA1

    e23024ecba55542494531f9cd68b364d3b7f2779

    SHA256

    b9f9fd75b448a0898bebae0abe18edd9fee9b41ab1f4b481db7d0509526dd64e

    SHA512

    1f878f1b5283748aa50bb83f2698aaea0b9064e76c86c640664dfb3cdedf134bd223e5492cae80aab376c0835e039293e1b5dd570c5224842f4cebdb03df40dc

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

    Filesize

    344B

    MD5

    eac0d00b73296b47f1efaa798acf02de

    SHA1

    19de77ccede0ef4e4177f95822a076e2cc9ec43e

    SHA256

    30a43e4e08e8110a23eccddd05322debde535f4720ae3176bd0052a42030dff1

    SHA512

    6d883da104e591d8e69733855c4625e182607daa4236c073f122304be3b6781b4121cd37f6bc18c8b86d6799aff75cee2038f80dabad3f560f4f6a90e8ac6a8d

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

    Filesize

    344B

    MD5

    90c632d78b847c3f822363d7b297850f

    SHA1

    4f8156e30d495728543a804189f2122f83e63d03

    SHA256

    9e8205261056ac7ec79dc76d7c99c7d4c2fafdca059545a316b53fc99daa047b

    SHA512

    149209aac1c633f295fadda3bfdd66c39ca6b8a3694d6ebd69c47d39d5055c961fa29d58bda98dd2824f00d2921cf994df4b1aa6a5d979aa7295b6d18c85acdd

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

    Filesize

    344B

    MD5

    cb88074cf64e705b8a9d3358f2e7c4d7

    SHA1

    3eea59055783100b50cfa71c07a200fcbb1ea990

    SHA256

    f741677ec63c1de05ab55768e730fb3353c634684cafe7a7fc3ef3632f493275

    SHA512

    9a2e5b50c3d636388f5d479eca9edcf715974c9cd3588710c776c36e06acfce85842a2189bbd6447c12f8ec6421eec443536a5bc0fe1d02475afe9b452bb3ec1

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

    Filesize

    344B

    MD5

    bf6cf3c89d370227900d899a02db6a24

    SHA1

    1101654503164ae125a4e0851ac166880dc00047

    SHA256

    f6b5e1dd1ab035afa58abd4f77a8cefd1ce23cf94c656572cda978023614642b

    SHA512

    f2b7c6d867ccb8d17abfa25480ef3bfe37c162ce8867e9e0b580f635519bfec913814c26fc893f39b475f8a3a3e06d96967c7ddee3bc1e3277ac08787151e876

  • C:\Users\Admin\AppData\Local\Temp\CabB77E.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\TarBB2B.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • memory/2704-3-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2704-0-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2704-6-0x0000000003340000-0x00000000035E6000-memory.dmp

    Filesize

    2.6MB

  • memory/2704-9-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2704-5-0x0000000000220000-0x0000000000221000-memory.dmp

    Filesize

    4KB

  • memory/2704-4-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2704-2-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2704-1-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-8-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-20-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-21-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-24-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-19-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-18-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-17-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-16-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-7-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-11-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-12-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB

  • memory/2760-13-0x00000000003B0000-0x00000000003B1000-memory.dmp

    Filesize

    4KB

  • memory/2760-10-0x0000000000400000-0x00000000006A6000-memory.dmp

    Filesize

    2.6MB