Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    13-12-2023 15:51

General

  • Target

    FortFire_V6.exe

  • Size

    306KB

  • MD5

    06adcf99da75a5a0441217993686f2b8

  • SHA1

    9028f5197b15fd3c047703a77888afb6969ed462

  • SHA256

    27215c86d52acc289f22159da5aa094fe57ffd92b4ecd50e8364ce7e413f7948

  • SHA512

    919333a2545a2a4c6a2e6a6bf6f065d167fccfda71224febeb85c472f8f57b882440d7526a4726066f825c1ae46204a5e1a995e1458c2d9b32e2d5cd9699ed77

  • SSDEEP

    768:YdXCfT4lMmkDgmpjuZmL6M/TjfKZKfgm3EhNDp7qwEFIZJxfx7uRT:YwTASpLL6M/TjF7EvDl6IZ75i

Malware Config

Extracted

Family

mercurialgrabber

C2

https://canary.discord.com/api/webhooks/1171148657458958417/b4eXbtxR2mg7kdanZqAf670H2pdhuCNlUO-CliCgpEeixMJqY7nW67Iqy6ZP1CwQcP9u

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.

  • 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 behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 36 IoCs
  • Suspicious use of SendNotifyMessage 36 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FortFire_V6.exe
    "C:\Users\Admin\AppData\Local\Temp\FortFire_V6.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:2888
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2888 -s 1896
      2⤵
        PID:2056
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2908

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      65KB

      MD5

      ac05d27423a85adc1622c714f2cb6184

      SHA1

      b0fe2b1abddb97837ea0195be70ab2ff14d43198

      SHA256

      c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

      SHA512

      6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

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

      Filesize

      344B

      MD5

      476abf624439bacfc9ea8792c01a61c8

      SHA1

      242340c1320d2e38499d67cbb26089e65a81efda

      SHA256

      8614254af15e42ee9ec95822651dec66d09dc0a01005e45b630ac863c14a69d9

      SHA512

      aa9d300ecd203b9a7fa8b190a70f9fa655e484790cf0be2890614824a0bd9893822f6987a33728bf3cb50b03a3a19b9425d23fdd713636d44a280b5529c707f9

    • C:\Users\Admin\AppData\Local\Temp\Cab4D09.tmp

      Filesize

      61KB

      MD5

      f3441b8572aae8801c04f3060b550443

      SHA1

      4ef0a35436125d6821831ef36c28ffaf196cda15

      SHA256

      6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

      SHA512

      5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

    • C:\Users\Admin\AppData\Local\Temp\Tar4E48.tmp

      Filesize

      171KB

      MD5

      9c0c641c06238516f27941aa1166d427

      SHA1

      64cd549fb8cf014fcd9312aa7a5b023847b6c977

      SHA256

      4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

      SHA512

      936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

    • memory/2888-0-0x0000000001050000-0x00000000010A2000-memory.dmp

      Filesize

      328KB

    • memory/2888-1-0x000007FEF54E0000-0x000007FEF5ECC000-memory.dmp

      Filesize

      9.9MB

    • memory/2888-2-0x0000000000DB0000-0x0000000000E30000-memory.dmp

      Filesize

      512KB

    • memory/2888-69-0x000007FEF54E0000-0x000007FEF5ECC000-memory.dmp

      Filesize

      9.9MB

    • memory/2908-70-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

    • memory/2908-71-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB