Resubmissions

19-01-2022 16:34

220119-t3aw3abfa3 10

25-11-2021 12:35

211125-pshrpsaed9 8

Analysis

  • max time kernel
    152s
  • max time network
    154s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    25-11-2021 12:35

General

  • Target

    fe828cf68e77f09d903d17e4318e585ca5753b5cc1a8e7fdb081244ee6e29464.exe

  • Size

    8.7MB

  • MD5

    29d557e552e133898f5387443792f285

  • SHA1

    c33c1d1dbe9b838d916b938741f1ebe9f624293f

  • SHA256

    fe828cf68e77f09d903d17e4318e585ca5753b5cc1a8e7fdb081244ee6e29464

  • SHA512

    ac716245cb2ee2032e6789d1c69ada966603770d1ab950b43d7df61e55ac30a36f27885ec96a53e88f67a84c6c92a9228d57834cf3f36a910af6067b95c7b02b

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 12 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 13 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fe828cf68e77f09d903d17e4318e585ca5753b5cc1a8e7fdb081244ee6e29464.exe
    "C:\Users\Admin\AppData\Local\Temp\fe828cf68e77f09d903d17e4318e585ca5753b5cc1a8e7fdb081244ee6e29464.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4016
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\system32\msiexec.exe" /i "C:\Users\Admin\AppData\Roaming\SunlitGreen Software\UAParser 3.1.8.4\install\6D45053\adv1.msi" AI_SETUPEXEPATH=C:\Users\Admin\AppData\Local\Temp\fe828cf68e77f09d903d17e4318e585ca5753b5cc1a8e7fdb081244ee6e29464.exe SETUPEXEDIR=C:\Users\Admin\AppData\Local\Temp\ EXE_CMD_LINE="/exenoupdates /forcecleanup /wintime 1636060142 " AI_EUIMSI=""
      2⤵
      • Enumerates connected drives
      • Suspicious use of FindShellTrayWindow
      PID:4404
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:424
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B54E8180CB5D9D48DC5554287B79FB6A C
      2⤵
      • Loads dropped DLL
      PID:4436
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 38D19F83C8A5A11CA1FA76831A88BFD8
      2⤵
      • Loads dropped DLL
      PID:4540
    • C:\Users\Admin\AppData\Roaming\SunlitGreen Software\UAParser\hfmonitor.exe
      "C:\Users\Admin\AppData\Roaming\SunlitGreen Software\UAParser\hfmonitor.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Checks processor information in registry
      PID:1820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/424-121-0x0000027F66AC0000-0x0000027F66AC2000-memory.dmp

    Filesize

    8KB

  • memory/424-120-0x0000027F66AC0000-0x0000027F66AC2000-memory.dmp

    Filesize

    8KB

  • memory/4404-131-0x0000000002540000-0x0000000002541000-memory.dmp

    Filesize

    4KB

  • memory/4404-130-0x0000000002540000-0x0000000002541000-memory.dmp

    Filesize

    4KB

  • memory/4436-124-0x0000000002460000-0x0000000002461000-memory.dmp

    Filesize

    4KB

  • memory/4436-123-0x0000000002460000-0x0000000002461000-memory.dmp

    Filesize

    4KB

  • memory/4540-134-0x00000000027C0000-0x00000000027C1000-memory.dmp

    Filesize

    4KB

  • memory/4540-135-0x00000000027C0000-0x00000000027C1000-memory.dmp

    Filesize

    4KB