Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 14:37

General

  • Target

    33da83071154a341536be70c1c2724afe9bd71d13c204e270bacc76bf8aa5ffa.exe

  • Size

    2.8MB

  • MD5

    855374a279dd60d9e0867aaab6cfacfb

  • SHA1

    fa7409e36e095a59363387fe10495fcb12241837

  • SHA256

    33da83071154a341536be70c1c2724afe9bd71d13c204e270bacc76bf8aa5ffa

  • SHA512

    07d752df6495283d2247160a8b66d5bbb4256d8bf8c785b2c5c479d0a01e5b0d9a7d72ff6f7e352359ff57bd6ca79c0b2445382ac0db34a2b4bf3cca8ffa7ec8

  • SSDEEP

    49152:Tvgz0FcsThyXGKl19rHNu1/Dm/XUHo0VFufE4LBGZxeMxKpvfj6fg+:T5N4zfyK/knwfkZFoT

Malware Config

Signatures

  • Registers COM server for autorun 1 TTPs 4 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

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

  • Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in Program Files directory 8 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\33da83071154a341536be70c1c2724afe9bd71d13c204e270bacc76bf8aa5ffa.exe
    "C:\Users\Admin\AppData\Local\Temp\33da83071154a341536be70c1c2724afe9bd71d13c204e270bacc76bf8aa5ffa.exe"
    1⤵
    • Loads dropped DLL
    • Installs/modifies Browser Helper Object
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2592
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\YooutUbeuAdBlocke\OXi0UC1Rw9dTkd.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4760
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\YooutUbeuAdBlocke\OXi0UC1Rw9dTkd.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1188

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

3
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\YooutUbeuAdBlocke\OXi0UC1Rw9dTkd.dat
    Filesize

    4KB

    MD5

    5b74609ed492df762cad4c8c06096b59

    SHA1

    003d41e4200d892f52212cf0c2b1fdf07afb9c0d

    SHA256

    940fc49c8c1932a19fe9d2204426a0dc81cce2d9c64f1031f20aafb78f6be456

    SHA512

    b8f80ce20546f92df403c7b84f56271b70aa51b9631710194fcac02737b961d85073239eadedb8c462d6c63f18796d62580977542442b7fec46cbee618ceb8dd

  • C:\Program Files (x86)\YooutUbeuAdBlocke\OXi0UC1Rw9dTkd.dll
    Filesize

    608KB

    MD5

    0355269639d03f0c96b5c995a7fba557

    SHA1

    cf31506688e2c1f6bde3ea2046b39fb3cd45b1d6

    SHA256

    0e85dc783dd8d135e42e416497a6d85064af196fc4bdd208412c7d64ee5b5db6

    SHA512

    1121d570556897ed2585ad21101077cf52c4a9fad69abae2842ef28d12ca8ddbebce9978cff083b891bcc0ea36042ea87939b0d2632530cb4973186157741038

  • C:\Program Files (x86)\YooutUbeuAdBlocke\OXi0UC1Rw9dTkd.tlb
    Filesize

    3KB

    MD5

    ea16e050c57b164fa84e8b82443a3439

    SHA1

    2b01b56bdb8a5986cd02cb510cac1a3918d11db9

    SHA256

    295f4a7b9258487bd55889369a50d086e861b5889dc3cf8be0302ad000d12eff

    SHA512

    29227cb3678e31072770d85910bc63584a3b291a6733cbb7d71e9ed86b8b2dff8bb4c74b126477af622a63dde3e7b30ee84ade54eff583711f1166e5c3ae568a

  • C:\Program Files (x86)\YooutUbeuAdBlocke\OXi0UC1Rw9dTkd.x64.dll
    Filesize

    688KB

    MD5

    77bc36cf62b98793a117eb936dc55624

    SHA1

    9e4163cd0ad341f2e0bc3c8c3ddd6c16b8172be2

    SHA256

    cc3a5b6b87d7838938b1e348b9025928cfc813727a39738f9681828b66a7dde7

    SHA512

    472cc986e07d9bc226117c7bf1ea18c4c5a30e161e861c11e74e59bddbd3ae5c89dc21f5a29a0e23613fad345d7e51a961079a3a57bb84928d87cada8befc089

  • C:\Program Files (x86)\YooutUbeuAdBlocke\OXi0UC1Rw9dTkd.x64.dll
    Filesize

    688KB

    MD5

    77bc36cf62b98793a117eb936dc55624

    SHA1

    9e4163cd0ad341f2e0bc3c8c3ddd6c16b8172be2

    SHA256

    cc3a5b6b87d7838938b1e348b9025928cfc813727a39738f9681828b66a7dde7

    SHA512

    472cc986e07d9bc226117c7bf1ea18c4c5a30e161e861c11e74e59bddbd3ae5c89dc21f5a29a0e23613fad345d7e51a961079a3a57bb84928d87cada8befc089

  • C:\Program Files (x86)\YooutUbeuAdBlocke\OXi0UC1Rw9dTkd.x64.dll
    Filesize

    688KB

    MD5

    77bc36cf62b98793a117eb936dc55624

    SHA1

    9e4163cd0ad341f2e0bc3c8c3ddd6c16b8172be2

    SHA256

    cc3a5b6b87d7838938b1e348b9025928cfc813727a39738f9681828b66a7dde7

    SHA512

    472cc986e07d9bc226117c7bf1ea18c4c5a30e161e861c11e74e59bddbd3ae5c89dc21f5a29a0e23613fad345d7e51a961079a3a57bb84928d87cada8befc089

  • memory/1188-141-0x0000000000000000-mapping.dmp
  • memory/2592-132-0x0000000002D10000-0x0000000002DB7000-memory.dmp
    Filesize

    668KB

  • memory/4760-138-0x0000000000000000-mapping.dmp