Analysis

  • max time kernel
    92s
  • max time network
    106s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2022 14:40

General

  • Target

    b26000731710b91b020a96c2c834e609f3f74d1b4c879964e1962c69975e3fbf.exe

  • Size

    154KB

  • MD5

    f53d031893900a221a023dcecf635c5e

  • SHA1

    46301cd53556d3348221fccd536cbfddbeb0317f

  • SHA256

    b26000731710b91b020a96c2c834e609f3f74d1b4c879964e1962c69975e3fbf

  • SHA512

    b4a64cb0eb75060510408d1b024af865c498cb3c799d8343917b554048f4791653a7a6fe3c2dc0c44fd27d2deb6437f40d63576daf200e33097a2085c3fd836c

  • SSDEEP

    3072:sr8JCtz5RI+FlB6MfXhaYf+YC/A114IV71h7rNIVCTXA3eZIkesJPPqb5g+VTjKD:ktxI+TLbx

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 WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b26000731710b91b020a96c2c834e609f3f74d1b4c879964e1962c69975e3fbf.exe
    "C:\Users\Admin\AppData\Local\Temp\b26000731710b91b020a96c2c834e609f3f74d1b4c879964e1962c69975e3fbf.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:4848
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b26000731710b91b020a96c2c834e609f3f74d1b4c879964e1962c69975e3fbf.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b26000731710b91b020a96c2c834e609f3f74d1b4c879964e1962c69975e3fbf.exe"
      2⤵
      • Executes dropped EXE
      PID:4792

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\b26000731710b91b020a96c2c834e609f3f74d1b4c879964e1962c69975e3fbf.exe
    Filesize

    113KB

    MD5

    506708142bc63daba64f2d3ad1dcd5bf

    SHA1

    d30e8c7543adbc801d675068530b57d75cabb13f

    SHA256

    9c36a08d9e7932ff4da7b5f24e6b42c92f28685b8abe964c870e8d7670fd531a

    SHA512

    a6e16f0de64b1500fbb2c7974a5efd40e8768b6c133f8ef367725a5c82b3b38c300dd65fa159b4a5f15413b0843a1e37416550ec89749ec1cf5cfae73dcc01ab

  • C:\Users\Admin\AppData\Local\Temp\3582-490\b26000731710b91b020a96c2c834e609f3f74d1b4c879964e1962c69975e3fbf.exe
    Filesize

    113KB

    MD5

    506708142bc63daba64f2d3ad1dcd5bf

    SHA1

    d30e8c7543adbc801d675068530b57d75cabb13f

    SHA256

    9c36a08d9e7932ff4da7b5f24e6b42c92f28685b8abe964c870e8d7670fd531a

    SHA512

    a6e16f0de64b1500fbb2c7974a5efd40e8768b6c133f8ef367725a5c82b3b38c300dd65fa159b4a5f15413b0843a1e37416550ec89749ec1cf5cfae73dcc01ab

  • memory/4792-132-0x0000000000000000-mapping.dmp