Analysis

  • max time kernel
    141s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    23-03-2023 11:33

General

  • Target

    d0e608a7a0b874649fa154ed44f6d61ae4e5188121926e982bb359e3bd61e5b3.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 12 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 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\d0e608a7a0b874649fa154ed44f6d61ae4e5188121926e982bb359e3bd61e5b3.dll,#1
    1⤵
    • Blocklisted process makes network request
    • Modifies system certificate store
    PID:2028

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Replay Monitor

Loading Replay Monitor...

Downloads

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

    61KB

    MD5

    e71c8443ae0bc2e282c73faead0a6dd3

    SHA1

    0c110c1b01e68edfacaeae64781a37b1995fa94b

    SHA256

    95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

    SHA512

    b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

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

    342B

    MD5

    969a0979cd31078ee851468bc297c98f

    SHA1

    5901fb5f2198dd6fa50fb69908b70cdba881d743

    SHA256

    759dc52a79b45d5aacaeb730f99082ca80d5203a04547be6013f561b925e2c86

    SHA512

    7175d7ace25df80243b80a214bf494fd758b10b59e547d4752cb1b4a6614dd7c4945e7478bcebea58e68649aff53d07d388bb181995b44c9a8966c3a13fce3f7

  • C:\Users\Admin\AppData\Local\Temp\CabD33A.tmp
    Filesize

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

  • C:\Users\Admin\AppData\Local\Temp\TarD479.tmp
    Filesize

    161KB

    MD5

    be2bec6e8c5653136d3e72fe53c98aa3

    SHA1

    a8182d6db17c14671c3d5766c72e58d87c0810de

    SHA256

    1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

    SHA512

    0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

  • memory/2028-54-0x0000000001C50000-0x0000000001C8B000-memory.dmp
    Filesize

    236KB

  • memory/2028-55-0x000007FEF6CC0000-0x000007FEF6E42000-memory.dmp
    Filesize

    1.5MB

  • memory/2028-56-0x0000000001C50000-0x0000000001C8B000-memory.dmp
    Filesize

    236KB