Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    14-04-2024 21:22

General

  • Target

    ef89bb0912038ab4108340333a105bca_JaffaCakes118.exe

  • Size

    78KB

  • MD5

    ef89bb0912038ab4108340333a105bca

  • SHA1

    d5eb7d497cc4ea9f0dba15fee376a28d101304d8

  • SHA256

    b92d39374c86c0135588db4235c81b05a9cee3b88259dad7ac10f28b123d1bc4

  • SHA512

    792171dc89b86eabfc9a95715b6bd6d76a788028278389a53b69b5f940c62c9023701ee1726d5e53348aad498b2d11c94234308fe295cfb496163dca3df5a4f5

  • SSDEEP

    1536:cx/HnJJtHXOQt36oxjm7WpdqlU61so/n+psr+iDi1/G7wnzht:cRnDtHX1t36o9m7WS+Ry5c1/Vf

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/872698419091738624/m321s3sLcbS6FbbL7KT4iYrxQ8p5lrY815kdaD2WF9MdsAppImTok3mh5EPsVBKnEiWz

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 2 IoCs
  • Loads dropped DLL 3 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 2 IoCs
  • 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 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ef89bb0912038ab4108340333a105bca_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ef89bb0912038ab4108340333a105bca_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2524
    • C:\Users\Admin\AppData\Local\Temp\Jrypapjg.exe
      "C:\Users\Admin\AppData\Local\Temp\Jrypapjg.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2880
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c cls
        3⤵
          PID:1672
      • C:\Users\Admin\AppData\Local\Temp\Rzuahuvfomw.exe
        "C:\Users\Admin\AppData\Local\Temp\Rzuahuvfomw.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:2384
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 2384 -s 1824
          3⤵
            PID:1960

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        68KB

        MD5

        29f65ba8e88c063813cc50a4ea544e93

        SHA1

        05a7040d5c127e68c25d81cc51271ffb8bef3568

        SHA256

        1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

        SHA512

        e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

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

        Filesize

        344B

        MD5

        8d992d04b27604d49ab7d695fc281160

        SHA1

        0e33916dcf1bd6c6236e536ef8095487b06d89ca

        SHA256

        b6d3382ab3b304582e7e47c7fc2bfd77372af538b5de985744c55036cf462895

        SHA512

        fe5b9d77ee9ae3c1711e36e653ac761b41b7d98e121b38efb97ec449e0895814329a773cf827e24c34995316b3effa448d039c1a9b0db2604a21c4be55c5cf7e

      • C:\Users\Admin\AppData\Local\Temp\Cab3729.tmp

        Filesize

        65KB

        MD5

        ac05d27423a85adc1622c714f2cb6184

        SHA1

        b0fe2b1abddb97837ea0195be70ab2ff14d43198

        SHA256

        c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

        SHA512

        6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

      • C:\Users\Admin\AppData\Local\Temp\Tar3839.tmp

        Filesize

        177KB

        MD5

        435a9ac180383f9fa094131b173a2f7b

        SHA1

        76944ea657a9db94f9a4bef38f88c46ed4166983

        SHA256

        67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

        SHA512

        1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

      • \Users\Admin\AppData\Local\Temp\Jrypapjg.exe

        Filesize

        36KB

        MD5

        58396b69a20e16d4c44ad0a20c7d56d2

        SHA1

        00028178750f50cb7e8357b1b1fdd44cfed4dbb5

        SHA256

        9a82faac6525eeb7228bc3d1113e396037b43d49801ddeb5dda5506f48e34f4e

        SHA512

        d6f77d2c847bce3c073c63ad51377466d86fe4e3acbabdf42b0c19b447373a1903dd5dc4a828b2c540e579ad0b49236c1d40037333a4c65e4aca39fa36ff6296

      • \Users\Admin\AppData\Local\Temp\Rzuahuvfomw.exe

        Filesize

        41KB

        MD5

        42cdd2b3db083ab34ca4d53faaba3ae3

        SHA1

        9228de25d0307aefcad1989c5693dcd7b8f0998a

        SHA256

        5ee6bc791c2bca79af4be36c4c5666247c25e34bae244961c5d62c932e89c3a7

        SHA512

        3e7ddf79281d48d2a8698c3291b17b153a2ebba746133cfca04ab4a1fc92454bed6f801e4c41a0b0db997183a7ec00fc65364b45f27b9adf497e93e744109bf1

      • memory/2384-16-0x00000000009B0000-0x00000000009C0000-memory.dmp

        Filesize

        64KB

      • memory/2384-17-0x000007FEF5670000-0x000007FEF605C000-memory.dmp

        Filesize

        9.9MB

      • memory/2384-18-0x000000001A870000-0x000000001A8F0000-memory.dmp

        Filesize

        512KB

      • memory/2384-85-0x000007FEF5670000-0x000007FEF605C000-memory.dmp

        Filesize

        9.9MB

      • memory/2384-86-0x000000001A870000-0x000000001A8F0000-memory.dmp

        Filesize

        512KB

      • memory/2524-15-0x0000000074060000-0x000000007474E000-memory.dmp

        Filesize

        6.9MB

      • memory/2524-0-0x0000000000400000-0x000000000041C000-memory.dmp

        Filesize

        112KB

      • memory/2524-2-0x00000000045A0000-0x00000000045E0000-memory.dmp

        Filesize

        256KB

      • memory/2524-1-0x0000000074060000-0x000000007474E000-memory.dmp

        Filesize

        6.9MB