Analysis

  • max time kernel
    145s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    11-02-2022 03:42

General

  • Target

    7bcb566fb0612a6b4293e73ac1c58b4286632d8927d86f170c11e53dc559bc07.exe

  • Size

    1.2MB

  • MD5

    88e18c40f5c22bbaa57eb744b2dd9cca

  • SHA1

    fe02cd10b0860330043afdb3e2a0f442bcc6ec33

  • SHA256

    7bcb566fb0612a6b4293e73ac1c58b4286632d8927d86f170c11e53dc559bc07

  • SHA512

    f3ddf5ee083ace66b6186fe8dd4be002c5073fd2eee3b405188381b92211f4626b10e5ca3dc98c42451cf2a0374c2f2a022c82674faafebf02c0d2382dfeacfe

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\7bcb566fb0612a6b4293e73ac1c58b4286632d8927d86f170c11e53dc559bc07.exe
    "C:\Users\Admin\AppData\Local\Temp\7bcb566fb0612a6b4293e73ac1c58b4286632d8927d86f170c11e53dc559bc07.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:4192
    • C:\Users\Admin\AppData\Local\Temp\3582-490\7bcb566fb0612a6b4293e73ac1c58b4286632d8927d86f170c11e53dc559bc07.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\7bcb566fb0612a6b4293e73ac1c58b4286632d8927d86f170c11e53dc559bc07.exe"
      2⤵
      • Executes dropped EXE
      PID:2492
  • 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:5024
  • 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:968

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\7bcb566fb0612a6b4293e73ac1c58b4286632d8927d86f170c11e53dc559bc07.exe
    MD5

    a89e52614a7765428e1997e567c4f0c6

    SHA1

    0bc0eb825267118c659f7af2984b7b28c78cd456

    SHA256

    c2e3411a42b473fb2770de2f3281671349dd03a20731127b6fef43165241c4a2

    SHA512

    b7aa5a4842a4cfd1bbdd9aae865028406848ef304e507fdfcbf6243e6f7c6464fff4dfd4d37a31e2171c676299ee42816e4d5709e9492e263b6c451f36a215f6

  • C:\Users\Admin\AppData\Local\Temp\3582-490\7bcb566fb0612a6b4293e73ac1c58b4286632d8927d86f170c11e53dc559bc07.exe
    MD5

    a89e52614a7765428e1997e567c4f0c6

    SHA1

    0bc0eb825267118c659f7af2984b7b28c78cd456

    SHA256

    c2e3411a42b473fb2770de2f3281671349dd03a20731127b6fef43165241c4a2

    SHA512

    b7aa5a4842a4cfd1bbdd9aae865028406848ef304e507fdfcbf6243e6f7c6464fff4dfd4d37a31e2171c676299ee42816e4d5709e9492e263b6c451f36a215f6

  • memory/5024-132-0x0000028725F80000-0x0000028725F90000-memory.dmp
    Filesize

    64KB

  • memory/5024-133-0x0000028726620000-0x0000028726630000-memory.dmp
    Filesize

    64KB

  • memory/5024-134-0x0000028728D00000-0x0000028728D04000-memory.dmp
    Filesize

    16KB