Analysis

  • max time kernel
    165s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-11-2022 11:22

General

  • Target

    b5a814bdf92d16fb33bafdee1454fddff2274b29c0eb6ac9172c0cf4c8a62eff.exe

  • Size

    114KB

  • MD5

    5011fac127044036903895169b99e568

  • SHA1

    cea350e36d010c19e6d07676f4b7886af4f60c59

  • SHA256

    b5a814bdf92d16fb33bafdee1454fddff2274b29c0eb6ac9172c0cf4c8a62eff

  • SHA512

    09386cfc8efe3ad862c5a70fc93c2f53bf86522ac39a9138d211feb494b68f8fdac8b7cf6deff9541c74e4d40a3170fe8da726a20fdc03f96c854cf3d04c34a0

  • SSDEEP

    1536:JxqjQ+P04wsmJCgfvm1XkSC6EM7644o0DTZYQOCgBcjr6lfDCJXHQ:sr85Cgfe1XlJ0DTZWpBcjOUtQ

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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b5a814bdf92d16fb33bafdee1454fddff2274b29c0eb6ac9172c0cf4c8a62eff.exe
    "C:\Users\Admin\AppData\Local\Temp\b5a814bdf92d16fb33bafdee1454fddff2274b29c0eb6ac9172c0cf4c8a62eff.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:2256
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b5a814bdf92d16fb33bafdee1454fddff2274b29c0eb6ac9172c0cf4c8a62eff.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b5a814bdf92d16fb33bafdee1454fddff2274b29c0eb6ac9172c0cf4c8a62eff.exe"
      2⤵
      • Executes dropped EXE
      PID:632

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\b5a814bdf92d16fb33bafdee1454fddff2274b29c0eb6ac9172c0cf4c8a62eff.exe
    Filesize

    73KB

    MD5

    5c6d60c5b4ae9589c0bf866a14f1b867

    SHA1

    f6dd9ec21b43c3426960b0fa388f3f68f86e3b2f

    SHA256

    421f5b8bb1ec7e8c487a4dc61d15873f2a9077978dafeb6cc6bfdd55775f80de

    SHA512

    6b70c95a52ebc948fc54a6ee79d5c0cbb0751bd988ee77cca1b8896f429fe8290c2221e00b5ea9d596338237d2dba292716821c37f179453b5e2757aabdddf9e

  • C:\Users\Admin\AppData\Local\Temp\3582-490\b5a814bdf92d16fb33bafdee1454fddff2274b29c0eb6ac9172c0cf4c8a62eff.exe
    Filesize

    73KB

    MD5

    5c6d60c5b4ae9589c0bf866a14f1b867

    SHA1

    f6dd9ec21b43c3426960b0fa388f3f68f86e3b2f

    SHA256

    421f5b8bb1ec7e8c487a4dc61d15873f2a9077978dafeb6cc6bfdd55775f80de

    SHA512

    6b70c95a52ebc948fc54a6ee79d5c0cbb0751bd988ee77cca1b8896f429fe8290c2221e00b5ea9d596338237d2dba292716821c37f179453b5e2757aabdddf9e

  • memory/632-132-0x0000000000000000-mapping.dmp