Overview

overview

10

Static

static

KR-310820.exe

windows7_x64

10

KR-310820.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    8ff7fdedc9420387bcf059c5883770b0b4cb6828d1a593032fcc82cf73963d28

  • Size

    958KB

  • Sample

    220521-c1fwvshhcq

  • MD5

    2e2750cf2b5c646ab0f0528bf4eee5db

  • SHA1

    7c9b1ee1d21b2dca19efcd07156c48f6b95c9be1

  • SHA256

    8ff7fdedc9420387bcf059c5883770b0b4cb6828d1a593032fcc82cf73963d28

  • SHA512

    a85c88169d5a913d62924f159f8877d8a17ef3e253260c07d6fa49e5315940ca1fbf80c2ae29b2237035063b66c37f7d4fd1defc0d3e15f3c894f44eb8c8855a

Score
10/10
asyncratnewjob1evasionrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

newjob1

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/eeJq8Ku6

aes.plain

Targets

    • Target

      KR-310820.exe

    • Size

      896KB

    • MD5

      685be020460aac060f121dd2d689cc2e

    • SHA1

      eca95082e24b2d15c1cc9f18d8083b9527b23eae

    • SHA256

      c2e6a6a4dcceeb65c2b769b92223c4b5c6de325709146391a4863dd56f4eb3d1

    • SHA512

      c2d1330653a2a15d4a84ecaa003e4879bab4116d603a78d0e2adee92e8b0ea728ee284d7d59e73be083274637ce02df96c50ce6ee149d4b9dc4b00a43c93b055

    Score
    10/10
    asyncratnewjob1evasionrat

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

      ratasyncrat

    • Async RAT payload

      rat

    • Looks for VirtualBox Guest Additions in registry

      evasion

    • Looks for VMWare Tools registry key

      evasion

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Legitimate hosting services abused for malware hosting/C2

    • Maps connected drives based on registry

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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Tasks