Analysis

  • max time kernel
    143s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2022 14:40

General

  • Target

    a865b1111576d74831e608c51d0a9eec0c6fd004bf03cdc94f6b76194462135b.exe

  • Size

    155KB

  • MD5

    fd6c7748528222c2f49733440d4025ca

  • SHA1

    5eb7ec50ea347daca1f4a04a247439c7bc87b2be

  • SHA256

    a865b1111576d74831e608c51d0a9eec0c6fd004bf03cdc94f6b76194462135b

  • SHA512

    e834eb0018fd8c24e045e7e24a5d8466387801426ce4985d6250e3cc6df90aaae0a2014905358e48e52c33041df1331204cd27fe4df3f9569b071dac2b45d9cd

  • SSDEEP

    3072:sr85CpCyaTJ1moxsNAi+zId9OeZxGLSFZpp:k9layAizdLXFZD

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 1 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a865b1111576d74831e608c51d0a9eec0c6fd004bf03cdc94f6b76194462135b.exe
    "C:\Users\Admin\AppData\Local\Temp\a865b1111576d74831e608c51d0a9eec0c6fd004bf03cdc94f6b76194462135b.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:872
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a865b1111576d74831e608c51d0a9eec0c6fd004bf03cdc94f6b76194462135b.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a865b1111576d74831e608c51d0a9eec0c6fd004bf03cdc94f6b76194462135b.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:4196

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Change Default File Association

1
T1042

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\a865b1111576d74831e608c51d0a9eec0c6fd004bf03cdc94f6b76194462135b.exe
    Filesize

    114KB

    MD5

    746c04040c02537a84e9031d3aa3731f

    SHA1

    e66da24d1a6dd4cf6b4e39a04d46aac350899012

    SHA256

    a17de24f37f9a263b02d2fc487289f0d4f1588dc544e46ebc0f59ec9f62b95bf

    SHA512

    a7b0d46a06f450b24c17db7bc4851072e6572b851d43f8825ee1d72a5a56b436df4d206072e49457906ac32294d19d8e0188ffa2b71fda9f76a2e6d6baff7f89

  • C:\Users\Admin\AppData\Local\Temp\3582-490\a865b1111576d74831e608c51d0a9eec0c6fd004bf03cdc94f6b76194462135b.exe
    Filesize

    114KB

    MD5

    746c04040c02537a84e9031d3aa3731f

    SHA1

    e66da24d1a6dd4cf6b4e39a04d46aac350899012

    SHA256

    a17de24f37f9a263b02d2fc487289f0d4f1588dc544e46ebc0f59ec9f62b95bf

    SHA512

    a7b0d46a06f450b24c17db7bc4851072e6572b851d43f8825ee1d72a5a56b436df4d206072e49457906ac32294d19d8e0188ffa2b71fda9f76a2e6d6baff7f89

  • memory/4196-132-0x0000000000000000-mapping.dmp