Analysis

  • max time kernel
    140s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    21-01-2024 08:18

General

  • Target

    6ccf11aecc3b829698cdf1972f5d8732.dll

  • Size

    1.2MB

  • MD5

    6ccf11aecc3b829698cdf1972f5d8732

  • SHA1

    983f34b013186bdb199692022f5f1b84db37765e

  • SHA256

    dbcc44b0fc980a62f0d950b32634d5d2d03785a0e7b7659cc3f2bf220d6c3f10

  • SHA512

    8b723631a08aafcb4ff20d1460d7740ca5ab2dc7c97528e986201b35bef542fe34061748b984cb4cfeb0f56e36a4362b55cc66e4ca4f065198295b42f671fa83

  • SSDEEP

    12288:6yWeahQ/LWnzkXz5HYrniajhuSlHJzJBlPXXo/6aNdCaBSPZC1XZV72BZ:HWeaZzqY7dhBjz/lfo/FIyXv72BZ

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Bazar/Team9 Loader payload 3 IoCs
  • Blocklisted process makes network request 16 IoCs
  • Tries to connect to .bazar domain 2 IoCs

    Attempts to lookup or connect to a .bazar domain, used by BazarBackdoor, Trickbot, and potentially others.

  • Unexpected DNS network traffic destination 2 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Modifies system certificate store 2 TTPs 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\6ccf11aecc3b829698cdf1972f5d8732.dll,#1
    1⤵
    • Blocklisted process makes network request
    • Modifies system certificate store
    PID:3052

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    344B

    MD5

    9cf533bc430ddd8ad0ada9fa4b26d1c8

    SHA1

    f0485d6698b488e2f2f4a99aa23fb17a58ffa496

    SHA256

    1c5417c1f03a70f349f9a46906187981bd79cb28efe8b751734750808780408c

    SHA512

    a7c903db8671c7cf9bc4ba3f5700d0a43334d17aae7d36f36e8d02031102db1f2842f2d8f7cd0e88cdd896ea154e7c92a13e71089b6e1e76dba8fa9ddd94427c

  • C:\Users\Admin\AppData\Local\Temp\CabC0A3.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\TarC132.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • memory/3052-0-0x0000000000310000-0x000000000034C000-memory.dmp

    Filesize

    240KB

  • memory/3052-1-0x000007FEF6A80000-0x000007FEF6C01000-memory.dmp

    Filesize

    1.5MB

  • memory/3052-3-0x0000000000310000-0x000000000034C000-memory.dmp

    Filesize

    240KB