Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    27-12-2023 01:45

General

  • Target

    9bca58b356486c17aeb8f157f614acac.dll

  • Size

    1.2MB

  • MD5

    9bca58b356486c17aeb8f157f614acac

  • SHA1

    4421fbc98f0f0b87cc2912d668345fd5629d98ea

  • SHA256

    37065b2a4cdaec2b1a260b39738746cb45895bd6d508e7aa5e4013e94abc6196

  • SHA512

    a60d3d1dd58f1bfab0fecff45d34028f3adcb92d401d2846fed7eab82d1ac77837dfa4da2e19136005c7064d8037b4b50c43b63b0a0f1a419f0d46ca758caa5a

  • SSDEEP

    12288:6yWeahQ/LWnzkXz5HYrniajhuSlHJzJBlPXXo/6aNdCaBSPZC1XZV72B7:HWeaZzqY7dhBjz/lfo/FIyXv72B7

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Bazar/Team9 Loader payload 3 IoCs
  • Blocklisted process makes network request 17 IoCs
  • Tries to connect to .bazar domain 1 IoCs

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

  • Unexpected DNS network traffic destination 1 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 2 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\9bca58b356486c17aeb8f157f614acac.dll,#1
    1⤵
    • Blocklisted process makes network request
    • Modifies system certificate store
    PID:2340

Network

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

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

    36eba0dfe3742c9a515c75301b6e3dc0

    SHA1

    4602aec3eb544cf15d4843b7a3712f7e4b61e3b0

    SHA256

    20348c32477eb92ae0ad266ec5ac5b3d92f75d016bca1a4b4dcf9f43e631b055

    SHA512

    2fbf88753276965259ba8cbae420d1f5405847fcc5586ad910d9fc9748e225745b90593e3c88758ceeef540399f391dd7f5a0c86023dad5ccc1ef98733943b03

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

    344B

    MD5

    edbe763b3bc2807ba2bde922dd19b2fc

    SHA1

    4dbb38545a39f3cfbbb18c4ceb94b7812e89a1a4

    SHA256

    d9e1b259ce870044019f6b847f7dee5db48dd80127eeaa2f0bab87eb9abb367c

    SHA512

    92242c3f339766af74fb6d2630a35eca855d7f55f25ad85a286beeb6021b5566ada7c34cd45505318b3421c0ad70ddb44f7c9bca9f6b3f38928c6ed77b23c145

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

    242B

    MD5

    cefb5c876a9c7934d6294abe90b71f3e

    SHA1

    15e4f2581f21ab69ffea786820e58ad94d412c1b

    SHA256

    da3a8ee381ebbcdc09738abe4baf03a48e30192e4d77f4a4043be64561eadfb3

    SHA512

    5e66586c863e7ca9dc0e2a5fc58d1f81e9e6fcdedcbd12a4561ada503802605766cf8136ff8fbed9e97cd7246f9ef7e2c76028260cdf9685f88cb070cbc40ce1

  • C:\Users\Admin\AppData\Local\Temp\Tar2C63.tmp
    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • memory/2340-0-0x0000000002050000-0x000000000208C000-memory.dmp
    Filesize

    240KB

  • memory/2340-1-0x000007FEF6BA0000-0x000007FEF6D21000-memory.dmp
    Filesize

    1.5MB

  • memory/2340-3-0x0000000002050000-0x000000000208C000-memory.dmp
    Filesize

    240KB