Analysis

  • max time kernel
    118s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    27-12-2023 13:15

General

  • Target

    b1604839b3dace254776abbfbc9502a3.exe

  • Size

    328KB

  • MD5

    b1604839b3dace254776abbfbc9502a3

  • SHA1

    ab057d68f800f597305b61980faf1c495b27588c

  • SHA256

    57e2778ab304e430ef5d6dd3d61f0dc26517cb6f0ea50f8eef0205fe6d6f4704

  • SHA512

    79db1e113d7ff7372b697677e545f837d7b1f7fea7a11600ecd8d8a071034add642adf58675ea200926c22e35b39ce874414f11bf73b64cab4594f3066388a51

  • SSDEEP

    6144:ajT5Zh17eWxoG/+ov/2OIQ4wW3OBsCeAW32X+t4RbUn+KqB7:aRZ+IoG/n9IQxW3OBsee2X+t4RbU+HB7

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/868559352003457034/dTdMLqh4_IpORTEPiHVx21-wA3YbOpblaXGNdGfU4SRujvYBPDaL2uE4H_TU8o2uW1KU

Signatures

  • Mercurial Grabber Stealer

    Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 1 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b1604839b3dace254776abbfbc9502a3.exe
    "C:\Users\Admin\AppData\Local\Temp\b1604839b3dace254776abbfbc9502a3.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2212
    • C:\Users\Admin\AppData\Local\Temp\Image Logger.exe
      "C:\Users\Admin\AppData\Local\Temp\Image Logger.exe"
      2⤵
      • Looks for VirtualBox Guest Additions in registry
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Maps connected drives based on registry
      • Checks SCSI registry key(s)
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2104
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2104 -s 1760
        3⤵
          PID:1964

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      344B

      MD5

      abf9f2122ac06d215ee91f65c6457e62

      SHA1

      7e16d599154a10122030e04a0472c5f4d466d355

      SHA256

      576550c83f3e5fa4191d1ae65d3b6072632c378e16f404c1a607ebaac6971b15

      SHA512

      99051eab80409d0ced7857854f48970fc82cbd634c187f7ff35b29bdb86f7e0bdbee87bd4fb24efe1d2ab97082325c7466fd7326f6bd353d014f993e921f5783

    • C:\Users\Admin\AppData\Local\Temp\CabB50F.tmp

      Filesize

      65KB

      MD5

      ac05d27423a85adc1622c714f2cb6184

      SHA1

      b0fe2b1abddb97837ea0195be70ab2ff14d43198

      SHA256

      c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

      SHA512

      6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

    • C:\Users\Admin\AppData\Local\Temp\TarB9D2.tmp

      Filesize

      171KB

      MD5

      9c0c641c06238516f27941aa1166d427

      SHA1

      64cd549fb8cf014fcd9312aa7a5b023847b6c977

      SHA256

      4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

      SHA512

      936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

    • \Users\Admin\AppData\Local\Temp\Image Logger.exe

      Filesize

      41KB

      MD5

      b9eefe47446164d047d1d5e1da6899cd

      SHA1

      54c21fc33ca44c2fcbb431c3aad30b49ef947be9

      SHA256

      145ce805304271d9e11ba8c5aac53a92c2bd956cc5055f4e2edf028a4822b731

      SHA512

      83ee4b48bc72ce23453d564a9b083029a60ab351b601e254cd3fd1bce2b4cde21677d273ff449f1fd703ce3f736c0bfdee3bb4b2f5b5d0c82101222631997b07

    • memory/2104-17-0x0000000000360000-0x0000000000370000-memory.dmp

      Filesize

      64KB

    • memory/2104-18-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

      Filesize

      9.9MB

    • memory/2104-19-0x0000000000480000-0x0000000000500000-memory.dmp

      Filesize

      512KB

    • memory/2104-81-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

      Filesize

      9.9MB

    • memory/2104-82-0x0000000000480000-0x0000000000500000-memory.dmp

      Filesize

      512KB