Overview

overview

10

Static

static

RustExternal_nls..scr

windows7-x64

8

RustExternal_nls..scr

windows10-2004-x64

10

Resubmissions

21-01-2023 02:04

230121-chntraad33 10

19-01-2023 02:52

230119-dc3w6add69 10

01-01-2023 05:14

230101-fxb1aabb96 10

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General

  • Target

    RustExternal_nls..scr

  • Size

    658KB

  • Sample

    230119-dc3w6add69

  • MD5

    556084cf64aec63e0babdf10a61afaa6

  • SHA1

    b7fa21295db0657d1767c05bb440b218cecdf521

  • SHA256

    d016fcbdb988d56df4c26d75a12e87a61010ed2366b52eefb8b409a1d8bcbaab

  • SHA512

    6c896594ea47228f71f1dea7d9fd9f9842b5f178748a39c785ded34fb9dfd574c9bd781f1f65176e436453257078255803d729b79d823c01c6629fddfb3ce33e

  • SSDEEP

    12288:LC/74rdbHgVBnqvFprkrUolVATWZXYm7ljg9hG80NEKXo1Y1UHC+O:LC/UGTWrkrUovUKfhkQNEwUnO

Score
10/10
asyncratdefendersmartscrensystem guard runtimewhostprojesspersistenceratupx

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

DefenderSmartScren

C2

217.64.31.3:8437

Mutex

DefenderSmartScren

Attributes
  • delay

    3

  • install

    false

  • install_file

    SecurityHealtheurvice.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

WHostProjess

C2

95.70.151.185:8805

Mutex

WHostProjess

Attributes
  • delay

    3

  • install

    false

  • install_file

    WHostProjess

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

System Guard Runtime

C2

85.105.88.221:2531

Mutex

System Guard Runtime

Attributes
  • delay

    3

  • install

    false

  • install_file

    System Guard Runtime

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      RustExternal_nls..scr

    • Size

      658KB

    • MD5

      556084cf64aec63e0babdf10a61afaa6

    • SHA1

      b7fa21295db0657d1767c05bb440b218cecdf521

    • SHA256

      d016fcbdb988d56df4c26d75a12e87a61010ed2366b52eefb8b409a1d8bcbaab

    • SHA512

      6c896594ea47228f71f1dea7d9fd9f9842b5f178748a39c785ded34fb9dfd574c9bd781f1f65176e436453257078255803d729b79d823c01c6629fddfb3ce33e

    • SSDEEP

      12288:LC/74rdbHgVBnqvFprkrUolVATWZXYm7ljg9hG80NEKXo1Y1UHC+O:LC/UGTWrkrUovUKfhkQNEwUnO

    Score
    10/10
    upxasyncratdefendersmartscrensystem guard runtimewhostprojesspersistencerat

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

      ratasyncrat

    • Async RAT payload

      rat

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks