Analysis

  • max time kernel
    120s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231130-en
  • resource tags

    arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system
  • submitted
    08-12-2023 15:57

General

  • Target

    CplusFINAL.exe

  • Size

    145KB

  • MD5

    b271e4fb0266235a4d268b4c6ed5881c

  • SHA1

    d32aabf8af8d07b0314f3939c0537b2ef16c8f53

  • SHA256

    8bbaee9d8425b3b3b116a7f16ff3b7fb64ad7dc0ceec11a6c6c73be5f9d97417

  • SHA512

    c54b539573a60302cf480fe330438543a41f8119605296a82eb20ab9b3236dd064ccba586ed302a800aa521ad1bbf7b0cb5af978a94b7c0a4d385021649b598e

  • SSDEEP

    768:4Yu25E9E//4M0uZcLdbTjVKZKfgm3Eh+3akivrA4/AKTQdOOOOqUBtme:VEIDiLdbTRF7EQ3acTKkt

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1182698637424349284/awwr4J0NH7Lcxt5MDhrJuq1MuzibBR6-hNZhjU4EvdU5d7RRRmNcFd4BUzrgBKMipWpd

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\CplusFINAL.exe
    "C:\Users\Admin\AppData\Local\Temp\CplusFINAL.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:2328
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2328 -s 1780
      2⤵
        PID:960

    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\Content\F0ACCF77CDCBFF39F6191887F6D2D357

      Filesize

      1KB

      MD5

      a266bb7dcc38a562631361bbf61dd11b

      SHA1

      3b1efd3a66ea28b16697394703a72ca340a05bd5

      SHA256

      df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

      SHA512

      0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

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

      Filesize

      344B

      MD5

      a271a794489287a756a48db60920354e

      SHA1

      c05c688746fffa8e308c4b3142f146b1b6ace617

      SHA256

      e2546ef91ff0ef4e79c504f3c9e6cf52273cb697ca26e15e113a0d4aa49e4b1a

      SHA512

      a76721a7098b283948fa580d8163b512084c37ae47fac4c4ee0669fce2421a89c00723189db43d322aca300c1257374ef2c55ed146f53a1f49cea7639eedcb79

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

      Filesize

      242B

      MD5

      783afd035b5dd3a296e56d09c0e5840d

      SHA1

      1bdfe681a6a234c8f50d35e03508feb3c2fab6dc

      SHA256

      4652c51877558405f5c4bc12bd372cd795d45868d50a291cf8effb50e5c00674

      SHA512

      1aa38f13e27868add52083256c2175796ed0a6a78a53408dcff35457955d0fef50a76c438777c6a4f48374a213ec2ac35fe4cf804b9d92010151edb79f6754a2

    • C:\Users\Admin\AppData\Local\Temp\Tar1164.tmp

      Filesize

      171KB

      MD5

      9c0c641c06238516f27941aa1166d427

      SHA1

      64cd549fb8cf014fcd9312aa7a5b023847b6c977

      SHA256

      4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

      SHA512

      936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

    • memory/2328-0-0x0000000000E90000-0x0000000000EBA000-memory.dmp

      Filesize

      168KB

    • memory/2328-1-0x000007FEF5A90000-0x000007FEF647C000-memory.dmp

      Filesize

      9.9MB

    • memory/2328-2-0x000000001B050000-0x000000001B0D0000-memory.dmp

      Filesize

      512KB

    • memory/2328-89-0x000007FEF5A90000-0x000007FEF647C000-memory.dmp

      Filesize

      9.9MB