General

  • Target

    88262a78ce91985653afffc74d9938050e56113840efbc67ee98eb9483fe1f22

  • Size

    539KB

  • Sample

    230317-hqg9tsgg2s

  • MD5

    04694e5e78d0a3dcab0bfea22aa90cfe

  • SHA1

    bbc04877ba04814fa13800b42f6e8ea550967e2b

  • SHA256

    88262a78ce91985653afffc74d9938050e56113840efbc67ee98eb9483fe1f22

  • SHA512

    953a8df5135738fcda2e47b5f63e6ad626dada1f8485fd587997c38e307fe7bd34ccc5c0164f8c25dbbf63038ea126ef44445d31c4607731ba4a692524b13c9c

  • SSDEEP

    12288:UdXvDWopdu11GNJGUOXOoDscvVqILhtgpiEg/ojnSFRsQOoS9cwMd:gv6oLM2GvXOoHdqIdsg/ojn4sQ9S9c1

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Wars

C2

95.173.247.110:8806

Mutex

Wars

Attributes
  • delay

    3

  • install

    true

  • install_file

    Winder.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

redline

Botnet

Muck

C2

52.232.8.179:37764

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

SecurityDefenderProtokol

C2

88.248.18.120:33918

Mutex

SecurityDefenderProtokol

Attributes
  • delay

    3

  • install

    false

  • install_file

    SecurityDefenderProtokol.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

1.0.7

C2

217.64.31.3:9742

Mutex

WindowsDefenderSmarttScreen

Attributes
  • delay

    1

  • install

    false

  • install_file

    WindowsDefenderSmarttScreen.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      88262a78ce91985653afffc74d9938050e56113840efbc67ee98eb9483fe1f22

    • Size

      539KB

    • MD5

      04694e5e78d0a3dcab0bfea22aa90cfe

    • SHA1

      bbc04877ba04814fa13800b42f6e8ea550967e2b

    • SHA256

      88262a78ce91985653afffc74d9938050e56113840efbc67ee98eb9483fe1f22

    • SHA512

      953a8df5135738fcda2e47b5f63e6ad626dada1f8485fd587997c38e307fe7bd34ccc5c0164f8c25dbbf63038ea126ef44445d31c4607731ba4a692524b13c9c

    • SSDEEP

      12288:UdXvDWopdu11GNJGUOXOoDscvVqILhtgpiEg/ojnSFRsQOoS9cwMd:gv6oLM2GvXOoHdqIdsg/ojn4sQ9S9c1

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • SectopRAT

      SectopRAT is a remote access trojan first seen in November 2019.

    • SectopRAT payload

    • Async RAT payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

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

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Process Discovery

1
T1057

Collection

Data from Local System

2
T1005

Tasks