Overview

overview

10

Static

static

Fancourier...RO.rtf

windows7_x64

10

Fancourier...RO.rtf

windows10-2004_x64

1

Sharing

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General

  • Target

    Fancourier 09032200754RO.doc

  • Size

    11KB

  • Sample

    220311-vp3wcsddgq

  • MD5

    61d865a3146022839c682c6129f33c18

  • SHA1

    d016f606309a92544592573efc2ed061338464fe

  • SHA256

    7d8c96446f4daba6698edbcd0bfb673afeda511922296470c9c1cf89db1f1ab3

  • SHA512

    912bd1cd9103ac54246c0f430bc7379d22ffad2d6c4462221d22df95338ef40c7e0f5499bf0202c734820ffd98dba6f88e0951f9966a07bd5c93e92c09d9be42

Score
10/10
asyncrat2persistenceratsuricata

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

2

C2

212.193.30.54:9524

Mutex

wyQ92!.,=FT72few

Attributes
  • anti_vm

    false

  • bsod

    false

  • delay

    3

  • install

    false

  • install_folder

    %AppData%

  • pastebin_config

    null

aes.plain

Targets

    • Target

      Fancourier 09032200754RO.doc

    • Size

      11KB

    • MD5

      61d865a3146022839c682c6129f33c18

    • SHA1

      d016f606309a92544592573efc2ed061338464fe

    • SHA256

      7d8c96446f4daba6698edbcd0bfb673afeda511922296470c9c1cf89db1f1ab3

    • SHA512

      912bd1cd9103ac54246c0f430bc7379d22ffad2d6c4462221d22df95338ef40c7e0f5499bf0202c734820ffd98dba6f88e0951f9966a07bd5c93e92c09d9be42

    Score
    10/10
    asyncrat2persistenceratsuricata

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

      ratasyncrat

    • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata

    • Async RAT payload

      rat

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • 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

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks