Analysis

  • max time kernel
    136s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    14-02-2022 05:03

General

  • Target

    3d95c5c6002c34cf80c63f5f29407bbb2f4863829b0e8048a8c84d9fab559e46.exe

  • Size

    168KB

  • MD5

    ef6f1926f9de7a8db83a958704663de7

  • SHA1

    7aa1ddcd8e947827db95edfe251a258c425af6de

  • SHA256

    3d95c5c6002c34cf80c63f5f29407bbb2f4863829b0e8048a8c84d9fab559e46

  • SHA512

    788ebeb3bde83443770f332c22e52d8f0ff4791ab0aa43c5d470f664b9e7fe6c0ef07ef8edc53a94be30166ec58a19b85885eb2365e27bd1da4085f524ba2d35

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3d95c5c6002c34cf80c63f5f29407bbb2f4863829b0e8048a8c84d9fab559e46.exe
    "C:\Users\Admin\AppData\Local\Temp\3d95c5c6002c34cf80c63f5f29407bbb2f4863829b0e8048a8c84d9fab559e46.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Users\Admin\AppData\Local\Temp\3582-490\3d95c5c6002c34cf80c63f5f29407bbb2f4863829b0e8048a8c84d9fab559e46.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\3d95c5c6002c34cf80c63f5f29407bbb2f4863829b0e8048a8c84d9fab559e46.exe"
      2⤵
      • Executes dropped EXE
      PID:1412
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:2768
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:1444

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\3d95c5c6002c34cf80c63f5f29407bbb2f4863829b0e8048a8c84d9fab559e46.exe
    MD5

    5ddaf519a0c92759885d81691d8dbb52

    SHA1

    0083ca095206737c6c79d99edd4187a60ccfdf06

    SHA256

    b572de1e792b28d1978cefaf81ea4dcddeec7cb6c98733d9ffe0cbc84a8296d2

    SHA512

    176bea6b5dbeeafffd2c0d10230d36a50b1e06628f44340ecf9e68fa9ae377757bc47bd476da0550189a08ac6910b4288e0891e927c4df97f0d00bcaa5ed1b2f

  • C:\Users\Admin\AppData\Local\Temp\3582-490\3d95c5c6002c34cf80c63f5f29407bbb2f4863829b0e8048a8c84d9fab559e46.exe
    MD5

    5ddaf519a0c92759885d81691d8dbb52

    SHA1

    0083ca095206737c6c79d99edd4187a60ccfdf06

    SHA256

    b572de1e792b28d1978cefaf81ea4dcddeec7cb6c98733d9ffe0cbc84a8296d2

    SHA512

    176bea6b5dbeeafffd2c0d10230d36a50b1e06628f44340ecf9e68fa9ae377757bc47bd476da0550189a08ac6910b4288e0891e927c4df97f0d00bcaa5ed1b2f

  • memory/2768-132-0x000001E4F5B30000-0x000001E4F5B40000-memory.dmp
    Filesize

    64KB

  • memory/2768-133-0x000001E4F5B90000-0x000001E4F5BA0000-memory.dmp
    Filesize

    64KB

  • memory/2768-134-0x000001E4F88B0000-0x000001E4F88B4000-memory.dmp
    Filesize

    16KB