Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    19-12-2023 20:19

General

  • Target

    91f1616aef66aaccd78af4ca336bc40a.exe

  • Size

    42KB

  • MD5

    91f1616aef66aaccd78af4ca336bc40a

  • SHA1

    ba1b71e5080465db3b000ba1d611c47dea35ae80

  • SHA256

    9e9e7ba74e9644038d96f5931d4e540622f115cb02b904b0ab12cac824b6fcc9

  • SHA512

    69b154c568577756cf8278e86c197a3f0b4dbcf9073d83bf287e508f58b9d87293f37c2528f7e4c0070cd87ca9ea991a9276fdc55e4ebc69ba36bada631b3950

  • SSDEEP

    768:0kxzKKqqI2SrZDfuZML4BUTjPKZKfgm3EhqBBZ:JNqH2oLL4BUTrF7E4X

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/893739851856367676/SNpO4YQixEgiS4X-hS2OHJ7YfJwBYH4-HxSDTj7Gc8o3tusEz_drp0Q2X_8SEmWp3zLg

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.

  • 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.

  • 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91f1616aef66aaccd78af4ca336bc40a.exe
    "C:\Users\Admin\AppData\Local\Temp\91f1616aef66aaccd78af4ca336bc40a.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • 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:2848
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2848 -s 1816
      2⤵
        PID:2448

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      344B

      MD5

      34fd2ba9329114aa8e3644c148d31559

      SHA1

      e4a64da5e05abde751d59e9033000b745a1aab53

      SHA256

      adb208a05ee673c6e3c476fae507289245b6c0a63146f0c538a4783e839c3c90

      SHA512

      cfedc643043592d13435d4aba4ca239de35382a0e3055985130fe8fdd40156bb0b3704c936ac89b0acbd36ae196de681a45041007ede0ddac9b6ca31adcb0b41

    • C:\Users\Admin\AppData\Local\Temp\Cab5E48.tmp

      Filesize

      65KB

      MD5

      ac05d27423a85adc1622c714f2cb6184

      SHA1

      b0fe2b1abddb97837ea0195be70ab2ff14d43198

      SHA256

      c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

      SHA512

      6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

    • C:\Users\Admin\AppData\Local\Temp\Tar5F06.tmp

      Filesize

      171KB

      MD5

      9c0c641c06238516f27941aa1166d427

      SHA1

      64cd549fb8cf014fcd9312aa7a5b023847b6c977

      SHA256

      4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

      SHA512

      936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

    • memory/2848-0-0x0000000000A50000-0x0000000000A60000-memory.dmp

      Filesize

      64KB

    • memory/2848-1-0x000007FEF5200000-0x000007FEF5BEC000-memory.dmp

      Filesize

      9.9MB

    • memory/2848-2-0x000000001B0D0000-0x000000001B150000-memory.dmp

      Filesize

      512KB

    • memory/2848-64-0x000007FEF5200000-0x000007FEF5BEC000-memory.dmp

      Filesize

      9.9MB

    • memory/2848-65-0x000000001B0D0000-0x000000001B150000-memory.dmp

      Filesize

      512KB