Analysis

  • max time kernel
    141s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    31-12-2023 11:18

General

  • Target

    33fe9450c17582b6968ea1a507651e77.dll

  • Size

    1.2MB

  • MD5

    33fe9450c17582b6968ea1a507651e77

  • SHA1

    2cd4a530ccdae728d9278025e344e931d2dc6703

  • SHA256

    d0e608a7a0b874649fa154ed44f6d61ae4e5188121926e982bb359e3bd61e5b3

  • SHA512

    a4fdcde472a64ba56f1cf8ceeaba5d3c20e9c36c0d71c5fce910c2774667f774753047df20fea369ff431db90b239822a57b8dc824351ae8623c8ff40849af76

  • SSDEEP

    24576:0Wpc+G43nwqthqmmldpXoQ5IyXdLrgvHmrE:8+n3Hthqm9qgkE

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 3 IoCs

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

  • Unexpected DNS network traffic destination 3 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\33fe9450c17582b6968ea1a507651e77.dll,#1
    1⤵
    • Blocklisted process makes network request
    • Modifies system certificate store
    PID:1104

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    344B

    MD5

    e162adba441a1ff1bd7ec166bc6f76d9

    SHA1

    ba20731daae845c44004d984d6d3d930b7df8def

    SHA256

    928fba402226397145f15e4073c0b5ca8e057f523bc02dd87a3b6169dfe46011

    SHA512

    59cebfe30c55e6f1b854b056e932f1a70f0226037e0ef35cc0a9ead52bf0dd9e135fdf46d2fa844c4cfdddf07443dccf04a3b39f5477002f0b447bbc8f3a4dbd

  • C:\Users\Admin\AppData\Local\Temp\Cab3610.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar3F47.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • memory/1104-0-0x00000000270F0000-0x000000002712B000-memory.dmp

    Filesize

    236KB

  • memory/1104-1-0x000007FEF5E00000-0x000007FEF5F82000-memory.dmp

    Filesize

    1.5MB

  • memory/1104-3-0x00000000270F0000-0x000000002712B000-memory.dmp

    Filesize

    236KB