General

  • Target

    ws.exe

  • Size

    3.0MB

  • Sample

    230116-vejpqsaa96

  • MD5

    c9a81dcabe30d055caca7db9affe0248

  • SHA1

    0e13ed377b15349ddef95c6eed281b46a50bbb5f

  • SHA256

    430d855fc783133d2d5bc01c095baff7d8b416a0f7c15a8a59288a96fcee7aa1

  • SHA512

    4bb62f936e94c207715aa9bf854dda8c5d0aa4a50d97ac09df98721344e0d0ed85f4c77f03e067bceb052fa908335ad1d34648a2afe5b3fac81873e55b49566a

  • SSDEEP

    49152:ug2G6sHJRXRTV7PH/4lrezRSmI4/6SWOyg5eO09rAq3h7twjklRUsd8OLWB7C7Rq:WG6sZVjVRSmI4eg5ebrV35ijsdLWBERq

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot5980420064:AAHGrlOU2WsgF90Pcyz-L7wrGgC_Cj54k4Q/sendMessage?chat_id=806259874

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      ws.exe

    • Size

      3.0MB

    • MD5

      c9a81dcabe30d055caca7db9affe0248

    • SHA1

      0e13ed377b15349ddef95c6eed281b46a50bbb5f

    • SHA256

      430d855fc783133d2d5bc01c095baff7d8b416a0f7c15a8a59288a96fcee7aa1

    • SHA512

      4bb62f936e94c207715aa9bf854dda8c5d0aa4a50d97ac09df98721344e0d0ed85f4c77f03e067bceb052fa908335ad1d34648a2afe5b3fac81873e55b49566a

    • SSDEEP

      49152:ug2G6sHJRXRTV7PH/4lrezRSmI4/6SWOyg5eO09rAq3h7twjklRUsd8OLWB7C7Rq:WG6sZVjVRSmI4eg5ebrV35ijsdLWBERq

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Async RAT payload

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Looks up geolocation information via web service

      Uses a legitimate geolocation service to find the infected system's geolocation info.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks