Overview

overview

10

Static

static

10

LET.exe

windows7-x64

10

LET.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    LET.EXE

  • Size

    175KB

  • Sample

    241216-zlkylazmhv

  • MD5

    c7235b3be7873e0743aba6235cd3d677

  • SHA1

    2481321813caff4ded19135c86301f899fb19f66

  • SHA256

    4902c56dfa5b513df7c00f8fe5df90dcc46a03f194dca424ebbf6f03e7904486

  • SHA512

    7310beb111ca489fd6348d40cea921d8854d99858cb2b9dc7d8211009a8c958374832f585f2cb25962e7ed3a453ca11102b7fb47be0eff8d2a7bc2b564928860

  • SSDEEP

    3072:r+ljDT+LbaRzegOBIIj6HLLYLCYJqvc1Dvu0gRsBaV/m4IauJX9bSM2dE+rBiQ+t:UDubaBBOBIIj6HLLYLCYJqvc1D2NsBMy

Score
10/10
asyncratstormkittydefaultdiscoverypersistenceprivilege_escalationratspywarestealer

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/bot7044437613:AAEXeS1SKGTrEjQ8F-7vSegWo8OLABeJY5k/sendMessage?chat_id=6052812018
Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      LET.EXE

    • Size

      175KB

    • MD5

      c7235b3be7873e0743aba6235cd3d677

    • SHA1

      2481321813caff4ded19135c86301f899fb19f66

    • SHA256

      4902c56dfa5b513df7c00f8fe5df90dcc46a03f194dca424ebbf6f03e7904486

    • SHA512

      7310beb111ca489fd6348d40cea921d8854d99858cb2b9dc7d8211009a8c958374832f585f2cb25962e7ed3a453ca11102b7fb47be0eff8d2a7bc2b564928860

    • SSDEEP

      3072:r+ljDT+LbaRzegOBIIj6HLLYLCYJqvc1Dvu0gRsBaV/m4IauJX9bSM2dE+rBiQ+t:UDubaBBOBIIj6HLLYLCYJqvc1D2NsBMy

    Score
    10/10
    asyncratstormkittydefaultdiscoverypersistenceprivilege_escalationratspywarestealer

    • AsyncRat

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

      ratasyncrat

    • Asyncrat family

      asyncrat

    • StormKitty

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

      stealerstormkitty

    • StormKitty payload

    • Stormkitty family

      stormkitty

    • Checks computer location settings

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

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Drops desktop.ini file(s)

    • 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.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Query Registry

2
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Wi-Fi Discovery

1
T1016.002

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks