Analysis

  • max time kernel
    10s
  • max time network
    14s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    30-03-2024 17:57

General

  • Target

    KEK_1.1.18.exe

  • Size

    202KB

  • MD5

    5dd7a61a2f110d248e979ca48d2f676e

  • SHA1

    afaf9f69d3839c23099f006e30c362e5dbc06048

  • SHA256

    5a37e31fa5d37c93706a2c7be69cf9b9fa2a96e5401f46411bb53668d734ecfe

  • SHA512

    807a05a8e59707ef0e3321fe912f6f78b6e42ea9eb6da4359f71a51c92b7f852f8b38dd70b98c26f1d92b95e6e5c5f2d09db6b8e14d94d5036a7e168c592cdf9

  • SSDEEP

    1536:tfxlL9rcFLNUTmF7E3N4ppbMiQ1UbeQYA+CmDCD80j9iIwOTFueIP1C4JxXFw17M:zR9rcFLiTmF7E3Nozulm9

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/955190997715943434/C4jt_m-oZnLO-3hIIy70BQamYK6_L-s9wiHjwYe2nDpBLu3zBLDGcFMoPwmkmsSElIIE

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 3 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.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\KEK_1.1.18.exe
    "C:\Users\Admin\AppData\Local\Temp\KEK_1.1.18.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:1608
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1608 -s 1912
      2⤵
        PID:2888

    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

      2eb7b150a583ddc4a8672cffcf93a27b

      SHA1

      28093a023b9ec014fdf66d2510d79a0ec67e9a5c

      SHA256

      a4e1da3f0e67aee9ae100468c9108770d67fa0e8d4d3a8e3cb03607ffeb9ac83

      SHA512

      293d78b5a9f57936b9ad44b219c6ecf7145267df30ec4972ed3463b46cdee38b8ab8092cc75978053e6a21a538977e1fff2f99b3db84afbf24b83a87697f29e2

    • C:\Users\Admin\AppData\Local\Temp\Cab5A42.tmp

      Filesize

      65KB

      MD5

      ac05d27423a85adc1622c714f2cb6184

      SHA1

      b0fe2b1abddb97837ea0195be70ab2ff14d43198

      SHA256

      c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

      SHA512

      6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

    • C:\Users\Admin\AppData\Local\Temp\Tar5C3D.tmp

      Filesize

      177KB

      MD5

      435a9ac180383f9fa094131b173a2f7b

      SHA1

      76944ea657a9db94f9a4bef38f88c46ed4166983

      SHA256

      67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

      SHA512

      1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

    • memory/1608-0-0x0000000000CD0000-0x0000000000D08000-memory.dmp

      Filesize

      224KB

    • memory/1608-1-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

      Filesize

      9.9MB

    • memory/1608-2-0x000000001A650000-0x000000001A6D0000-memory.dmp

      Filesize

      512KB

    • memory/1608-80-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

      Filesize

      9.9MB