Analysis

  • max time kernel
    146s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    28-12-2023 15:00

General

  • Target

    e56e1ee0af12a066ee5004ea327c53ee.exe

  • Size

    5.7MB

  • MD5

    e56e1ee0af12a066ee5004ea327c53ee

  • SHA1

    50aaf0098ec7ae18a964711ee3ecc4b20da208da

  • SHA256

    40f450c93ce882fc29eabef25e8c13a7c3c8243de54c34d6a3bbc75aae69977b

  • SHA512

    92a03ba03ea3ae0903fd3e314bc6fa7c0d148a4849ac2f33792dfe9053068f21059fef9f37983a8adc31626eaf2a9e0d2d8fc8c52a885aed6b615c4a56f38f1f

  • SSDEEP

    98304:g6gfOH6jJmAyj1GT1umqYsBR8p3t7PQNsPRZhXk1u:GjJmNjcT1y9Ep3RPksZZhXR

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/867877948820029491/gtNPChnQebtHAxgaee1xYkhdf00jW3BJbkQZcVt_UHg2vTCcm1V7aZkXRIEEl3lxpWMG

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Nirsoft 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e56e1ee0af12a066ee5004ea327c53ee.exe
    "C:\Users\Admin\AppData\Local\Temp\e56e1ee0af12a066ee5004ea327c53ee.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3032
    • C:\Users\Admin\AppData\Local\Temp\RCC.exe
      "C:\Users\Admin\AppData\Local\Temp\RCC.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      PID:2980
    • C:\Users\Admin\AppData\Local\Temp\GameWerCheatRust.exe
      "C:\Users\Admin\AppData\Local\Temp\GameWerCheatRust.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2716
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 864
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:1088

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

    972f1e98661873845285b4c67f3c6355

    SHA1

    a8ecc4828c3f37124ecf04dbbf2874878472fd34

    SHA256

    1a7c151dd8c128b894c77e9abc1b091c713ca7a874c239259563a95c4a2577f6

    SHA512

    4cca375b9a51c1146e36bc98969e39bbfd1bf8e248c07aec9a18dddb92e183c3723db74381cfde615a422b1e757b6e1a4aa6678d21bc709d48009f4f339f47ce

  • C:\Users\Admin\AppData\Local\Temp\CabE507.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

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

    Filesize

    1.2MB

    MD5

    7e088b115fa4207cfb39fb5c0af1efd3

    SHA1

    9bd0463048abb19af56da6699599cc61483dc851

    SHA256

    00ba9963874ec7834f3c205647e5b5336efc36d68c627904350b92a819bc3bc0

    SHA512

    45b0e5578ef3527a518600d5562af430964d00ec26ca84be4c77c5af70d4ca95f30cf0f29fedfa7a890108630e602ce7cef12ee303a677a96573e47f5f6a563f

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

    Filesize

    6.5MB

    MD5

    d3b632a6bbcd6e52d22a850312f3a7c5

    SHA1

    956457973a0f7fbd700b17be22cb7e38cb769ebb

    SHA256

    1071982640cabfe8b83e74efacfc34ddb16ffce89eac95dde2724cdf4733ba88

    SHA512

    4a75dd0171a5d28f2bf627c4b9a5199e2294776f47fdd244bb44809195ed047c9513071248599e069a11b7be4eafb147cf5676530b1f76c99031267630d1d244

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

    Filesize

    7.7MB

    MD5

    b6b6d95b56accebef234a7bfa421263a

    SHA1

    2653ebf2226bf80bbb0db934e1a5c4b3540a4d0e

    SHA256

    6ec8ecee1e0d497238fc4fa5cb7d6561f336097af5c869c9b092dfcb25bce88a

    SHA512

    3f9d6a3d6fb09194e8e4eab027fc8ec9d87731d05ac7316c6b6f7b00884c76b4c5fa9d31e6b98cbbb8053bb5a87ac84270f5d3b61ad5c68053ec8d7752435986

  • C:\Users\Admin\AppData\Local\Temp\TarE5F4.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • \??\c:\Users\Admin\AppData\Local\Temp\RCC.exe

    Filesize

    3.4MB

    MD5

    0834f7025f10b6dcaa7dd4380ca3cbf9

    SHA1

    3255e9432d806a43e6141c964e959c6485c3639f

    SHA256

    753c9ea53b3307fd8b57003565ed94182d35e174534ca37c43bbde997cfe02f0

    SHA512

    614c825d41b8cb328d0d0e7d5add04e28f7879477d5a9b4a6955e8d80ce7e1efd34ff99b00bc3a4df2192220f3e7f9d021f4ca399235d2fa99050d78a12cb16e

  • memory/2716-126-0x0000000000DF0000-0x00000000011A8000-memory.dmp

    Filesize

    3.7MB

  • memory/2716-31-0x0000000000DB0000-0x0000000000DF0000-memory.dmp

    Filesize

    256KB

  • memory/2716-18-0x0000000000DF0000-0x00000000011A8000-memory.dmp

    Filesize

    3.7MB

  • memory/2716-141-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2716-22-0x0000000000DF0000-0x00000000011A8000-memory.dmp

    Filesize

    3.7MB

  • memory/2716-21-0x0000000000DF0000-0x00000000011A8000-memory.dmp

    Filesize

    3.7MB

  • memory/2716-156-0x0000000000DB0000-0x0000000000DF0000-memory.dmp

    Filesize

    256KB

  • memory/2716-24-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-140-0x000000003B400000-0x000000003B43A000-memory.dmp

    Filesize

    232KB

  • memory/2980-129-0x000000000BF10000-0x000000000BF16000-memory.dmp

    Filesize

    24KB

  • memory/2980-29-0x0000000005390000-0x00000000053E8000-memory.dmp

    Filesize

    352KB

  • memory/2980-25-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-61-0x0000000005420000-0x0000000005460000-memory.dmp

    Filesize

    256KB

  • memory/2980-62-0x0000000005420000-0x0000000005460000-memory.dmp

    Filesize

    256KB

  • memory/2980-64-0x0000000000400000-0x0000000000BB2000-memory.dmp

    Filesize

    7.7MB

  • memory/2980-23-0x0000000000400000-0x0000000000B6C000-memory.dmp

    Filesize

    7.4MB

  • memory/2980-154-0x0000000005420000-0x0000000005460000-memory.dmp

    Filesize

    256KB

  • memory/2980-13-0x0000000077AC0000-0x0000000077AC1000-memory.dmp

    Filesize

    4KB

  • memory/2980-9-0x0000000000400000-0x0000000000BB2000-memory.dmp

    Filesize

    7.7MB

  • memory/2980-127-0x0000000010A30000-0x0000000010AEC000-memory.dmp

    Filesize

    752KB

  • memory/2980-128-0x000000000BEE0000-0x000000000BEE6000-memory.dmp

    Filesize

    24KB

  • memory/2980-26-0x00000000079E0000-0x0000000007DB8000-memory.dmp

    Filesize

    3.8MB

  • memory/2980-153-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-152-0x000000003B400000-0x000000003B43A000-memory.dmp

    Filesize

    232KB

  • memory/2980-142-0x00000000747A0000-0x0000000074E8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-144-0x000000000BF60000-0x000000000BF70000-memory.dmp

    Filesize

    64KB

  • memory/2980-146-0x000000000BF60000-0x000000000BF70000-memory.dmp

    Filesize

    64KB

  • memory/2980-147-0x000000000BF60000-0x000000000BF70000-memory.dmp

    Filesize

    64KB

  • memory/2980-148-0x000000000BF60000-0x000000000BF70000-memory.dmp

    Filesize

    64KB

  • memory/2980-149-0x000000003B400000-0x000000003B43A000-memory.dmp

    Filesize

    232KB

  • memory/3032-0-0x0000000000A40000-0x0000000000FF2000-memory.dmp

    Filesize

    5.7MB

  • memory/3032-2-0x0000000000560000-0x00000000005E0000-memory.dmp

    Filesize

    512KB

  • memory/3032-19-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp

    Filesize

    9.9MB

  • memory/3032-1-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp

    Filesize

    9.9MB