Analysis

  • max time kernel
    93s
  • max time network
    113s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ef89bb0912038ab4108340333a105bca_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ef89bb0912038ab4108340333a105bca_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2788
    • 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:2612
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c cls
        3⤵
          PID:3244
      • 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
        PID:1196

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      36KB

      MD5

      58396b69a20e16d4c44ad0a20c7d56d2

      SHA1

      00028178750f50cb7e8357b1b1fdd44cfed4dbb5

      SHA256

      9a82faac6525eeb7228bc3d1113e396037b43d49801ddeb5dda5506f48e34f4e

      SHA512

      d6f77d2c847bce3c073c63ad51377466d86fe4e3acbabdf42b0c19b447373a1903dd5dc4a828b2c540e579ad0b49236c1d40037333a4c65e4aca39fa36ff6296

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

      Filesize

      41KB

      MD5

      42cdd2b3db083ab34ca4d53faaba3ae3

      SHA1

      9228de25d0307aefcad1989c5693dcd7b8f0998a

      SHA256

      5ee6bc791c2bca79af4be36c4c5666247c25e34bae244961c5d62c932e89c3a7

      SHA512

      3e7ddf79281d48d2a8698c3291b17b153a2ebba746133cfca04ab4a1fc92454bed6f801e4c41a0b0db997183a7ec00fc65364b45f27b9adf497e93e744109bf1

    • memory/1196-33-0x00007FFAB7090000-0x00007FFAB7B51000-memory.dmp

      Filesize

      10.8MB

    • memory/1196-29-0x0000000002B50000-0x0000000002B60000-memory.dmp

      Filesize

      64KB

    • memory/1196-28-0x00007FFAB7090000-0x00007FFAB7B51000-memory.dmp

      Filesize

      10.8MB

    • memory/1196-27-0x0000000000AB0000-0x0000000000AC0000-memory.dmp

      Filesize

      64KB

    • memory/2788-3-0x0000000004940000-0x00000000049D2000-memory.dmp

      Filesize

      584KB

    • memory/2788-5-0x0000000005030000-0x000000000503A000-memory.dmp

      Filesize

      40KB

    • memory/2788-4-0x00000000050B0000-0x00000000050C0000-memory.dmp

      Filesize

      64KB

    • memory/2788-26-0x0000000074910000-0x00000000750C0000-memory.dmp

      Filesize

      7.7MB

    • memory/2788-0-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB

    • memory/2788-2-0x0000000004A20000-0x0000000004FC4000-memory.dmp

      Filesize

      5.6MB

    • memory/2788-1-0x0000000074910000-0x00000000750C0000-memory.dmp

      Filesize

      7.7MB