Malware Analysis Report

2024-09-22 07:01

Sample ID 240617-bhkxesxbqf
Target 4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a.exe
SHA256 4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a
Tags
asyncrat default rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a

Threat Level: Known bad

The file 4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a.exe was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat

AsyncRat

Async RAT payload

Detects executables attemping to enumerate video devices using WMI

Detects executables containing the string DcRatBy

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-17 01:08

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-17 01:08

Reported

2024-06-17 01:11

Platform

win7-20240611-en

Max time kernel

119s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Detects executables attemping to enumerate video devices using WMI

Description Indicator Process Target
N/A N/A N/A N/A

Detects executables containing the string DcRatBy

Description Indicator Process Target
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1876 set thread context of 2548 N/A C:\Users\Admin\AppData\Local\Temp\4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a.exe C:\Windows\SysWOW64\explorer.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a.exe

"C:\Users\Admin\AppData\Local\Temp\4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a.exe"

C:\Windows\SysWOW64\explorer.exe

explorer.exe

Network

Country Destination Domain Proto
HK 206.238.196.109:1245 206.238.196.109 tcp
N/A 127.0.0.1:43199 tcp
US 8.8.8.8:53 webwhatsapp.cc udp
HK 8.217.140.110:65503 webwhatsapp.cc tcp
HK 206.238.196.109:43199 tcp

Files

memory/2548-6-0x0000000073BE0000-0x00000000742CE000-memory.dmp

memory/2548-5-0x00000000006D0000-0x00000000006E6000-memory.dmp

memory/2548-4-0x0000000073BEE000-0x0000000073BEF000-memory.dmp

memory/2548-3-0x0000000000080000-0x0000000000099000-memory.dmp

memory/2548-2-0x0000000000080000-0x0000000000099000-memory.dmp

memory/2548-7-0x0000000073BE0000-0x00000000742CE000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab79C4.tmp

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Temp\Tar93AD.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

memory/2548-42-0x0000000073BEE000-0x0000000073BEF000-memory.dmp

memory/2548-43-0x0000000073BE0000-0x00000000742CE000-memory.dmp

memory/2548-44-0x0000000073BE0000-0x00000000742CE000-memory.dmp

memory/2548-45-0x0000000073BE0000-0x00000000742CE000-memory.dmp

memory/2548-46-0x0000000073BE0000-0x00000000742CE000-memory.dmp

memory/2548-47-0x0000000073BE0000-0x00000000742CE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-17 01:08

Reported

2024-06-17 01:11

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

53s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a.exe

"C:\Users\Admin\AppData\Local\Temp\4b4c5aed86e3530fe1a847c367cd0ed5ec050b7d6ff95d09838bea52c9df470a.exe"

Network

Country Destination Domain Proto
HK 206.238.196.109:1245 tcp

Files

N/A