Resubmissions

13-10-2024 11:52

241013-n15qrsvdrc 5

13-10-2024 11:50

241013-nzlaqszcqk 5

Analysis

  • max time kernel
    92s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-10-2024 11:52

General

  • Target

    $TEMP/BDMPEG1SETUP.exe

  • Size

    1.4MB

  • MD5

    461d135a4fccd51bbae38f742e123fd3

  • SHA1

    c12a442fbcd4a9c44102f0a560ba03d59bc501ed

  • SHA256

    4c441e7d744a2a273f780103bcf5bcb1e32c2d9c6a32b62f9044b32107544079

  • SHA512

    41eb816bf0cc0ca12b5c6c07517cd718b8701255ea81e94ffc937f2538b8cdf5db24751cdbc22fefd6496b767fc0d631fea76216b0363f4b625557097b3caaee

  • SSDEEP

    24576:KmJpkgDvk80bh06JsAD8JLPHXcovQjy1jR8Qlq7m5xHlwP4mWunSCiwpFHNi:KUM80bO6JsA+jnb9iZK5plDjCTpFU

Malware Config

Signatures

  • Drops file in System32 directory 6 IoCs
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 3 IoCs
  • Loads dropped DLL 8 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 56 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$TEMP\BDMPEG1SETUP.exe
    "C:\Users\Admin\AppData\Local\Temp\$TEMP\BDMPEG1SETUP.exe"
    1⤵
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\Windows\SysWOW64\regsvr32.exe
      "regsvr32" /s "C:\Program Files (x86)\BandiMPEG1\bdfilters64.dll"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1048
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\BandiMPEG1\bdfilters64.dll"
        3⤵
        • Loads dropped DLL
        • Modifies registry class
        PID:340

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\BandiMPEG1\bdfilters.dll

    Filesize

    4.1MB

    MD5

    ed730387fdcd684b756601b863c47417

    SHA1

    c49ed6d0d46facf4ceaeb21f5d6bfdf9e3587fde

    SHA256

    9cbc29696ad2d582e251bf9c4be5cce618753fa43551d2474e1ae5cc5e1245e5

    SHA512

    e32df727799d33922c6e92f94a7bdb0bc2772d6a6636d15e285d94d3ae4661062e5bc89ec3546b76ec853398f88d972f461327ef687f89093acf1096560d5c3f

  • C:\Program Files (x86)\BandiMPEG1\bdfilters64.dll

    Filesize

    4.6MB

    MD5

    13f7a29baa1e04f74151737cb71bd0e5

    SHA1

    0bc8682c6c96923a729aa6239aa53d95221b13ab

    SHA256

    008fababd36e8fbfd5f610a2c62d47963e78ec91e54ad69a1e20807445c3528d

    SHA512

    4cea11e88e8861c4094b227d85295c0d67452af703b0ec9dfe475797b87d03b40bc1f6b58dcc00996672c1c05d99b82dcc067bc429a1465ae90f4ec966f2bca8

  • C:\Users\Admin\AppData\Local\Temp\nsnCE1F.tmp\InstallOptions.dll

    Filesize

    15KB

    MD5

    67d8f4d5acdb722e9cb7a99570b3ded1

    SHA1

    f4a729ba77332325ea4dbdeea98b579f501fd26f

    SHA256

    fa8de036b1d9bb06be383a82041966c73473fc8382d041fb5c1758f991afeae7

    SHA512

    03999cc26a76b0de6f7e4e8a45137ee4d9c250366ac5a458110f00f7962158311eea5f22d3ee4f32f85aa6969eb143bdb8f03ca989568764ed2bc488c89b4b7f

  • C:\Users\Admin\AppData\Local\Temp\nsnCE1F.tmp\System.dll

    Filesize

    11KB

    MD5

    959ea64598b9a3e494c00e8fa793be7e

    SHA1

    40f284a3b92c2f04b1038def79579d4b3d066ee0

    SHA256

    03cd57ab00236c753e7ddeee8ee1c10839ace7c426769982365531042e1f6f8b

    SHA512

    5e765e090f712beffce40c5264674f430b08719940d66e3a4d4a516fd4ade859f7853f614d9d6bbb602780de54e11110d66dbb0f9ca20ef6096ede531f9f6d64

  • C:\Users\Admin\AppData\Local\Temp\nsnCE1F.tmp\UserInfo.dll

    Filesize

    4KB

    MD5

    d16e06c5de8fb8213a0464568ed9852f

    SHA1

    d063690dc0d2c824f714acb5c4bcede3aa193f03

    SHA256

    728472ba312ae8af7f30d758ab473e0772477a68fcd1d2d547dafe6d8800d531

    SHA512

    60502bb65d91a1a895f38bd0f070738152af58ffa4ac80bac3954aa8aad9fda9666e773988cbd00ce4741d2454bf5f2e0474ce8ea18cfe863ec4c36d09d1e27a

  • C:\Users\Admin\AppData\Local\Temp\nsnCE1F.tmp\ioSpecial.ini

    Filesize

    1000B

    MD5

    01a723d14d6e6975994c176f41ab94b4

    SHA1

    4e7310a6dfed7584242b211a20f0e2f73da138a9

    SHA256

    9da6d43f1d59dd977533d1f0c50b8befaab8d810e41bdfaebe438cb7851151f9

    SHA512

    a71ed6aa5c73c9e87cde7c5061f4307bceb34590f262b03a9618131b596c29195769c3235ec38ad09742f1f16feae6d26e6074dd4d6086c941f7b9618387ff9d