Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    27-12-2023 01:28

General

  • Target

    9b35b45aa39ebe202ce6cdcb9df656ee.dll

  • Size

    1.2MB

  • MD5

    9b35b45aa39ebe202ce6cdcb9df656ee

  • SHA1

    49ce63eb5043cd25d4b8cbe8e1c3e6717b8c4fe8

  • SHA256

    e3ae3375e738c81024554011d0596ff8ab801267c6eb4df7815d8c4e876f39d2

  • SHA512

    1171f83c88c2531e86fc64474568feecfc340cfa477183fe87c9df7b952a333afbd304c6b57bba44a8ba7b3d8dba95aba403c8bba8b7e0ef27ee36a8ffa2935b

  • SSDEEP

    24576:0Wpc+G43nwqthqmmldpXoQ5IyXdLrgvHmrB:8+n3Hthqm9qgkB

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 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\9b35b45aa39ebe202ce6cdcb9df656ee.dll,#1
    1⤵
    • Blocklisted process makes network request
    • Modifies system certificate store
    PID:1204

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\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    9d0b125119fa97a91da2d762b0db9f79

    SHA1

    a54fe10c66e8e483e8b3b01604b0affea9db6366

    SHA256

    7bf50e341f2e6c13e0950a686f4524320b3aa77927d0a1357fd82c16ac7401c3

    SHA512

    0889a6b97d7a24b194c36e2c0dd6668edb81623618b3b3835ef0d2fd95be54016a29f907b396e70ede44c81951a98a06c37322e40e95debbf61885349b91e97e

  • C:\Users\Admin\AppData\Local\Temp\Cab4DF3.tmp
    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar5F64.tmp
    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • memory/1204-0-0x00000000270E0000-0x000000002711B000-memory.dmp
    Filesize

    236KB

  • memory/1204-1-0x000007FEF59C0000-0x000007FEF5B42000-memory.dmp
    Filesize

    1.5MB

  • memory/1204-3-0x00000000270E0000-0x000000002711B000-memory.dmp
    Filesize

    236KB