Malware Analysis Report

2024-08-06 13:09

Sample ID 240615-k6rjjsvfje
Target adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118
SHA256 fcd4c130e8f5644b298e9da60aa513a402f3f7cef8d836c9b40f65b57e456c65
Tags
asyncrat default persistence 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

fcd4c130e8f5644b298e9da60aa513a402f3f7cef8d836c9b40f65b57e456c65

Threat Level: Known bad

The file adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

asyncrat default persistence rat

AsyncRat

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-15 09:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 09:13

Reported

2024-06-15 09:15

Platform

win7-20231129-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe"

Signatures

AsyncRat

rat asyncrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\HWMonitor = "C:\\Users\\Admin\\AppData\\Roaming\\zqezihjic ubtsgkjwx\\HWMonitor.exe" C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1684 set thread context of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1684 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1684 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1684 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1684 wrote to memory of 3012 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1684 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'HWMonitor';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'HWMonitor' -Value '"C:\Users\Admin\AppData\Roaming\zqezihjic ubtsgkjwx\HWMonitor.exe"' -PropertyType 'String'

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

Network

Country Destination Domain Proto
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
DE 79.134.225.92:7707 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
DE 79.134.225.92:7707 tcp
N/A 127.0.0.1:6606 tcp
DE 79.134.225.92:7707 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp

Files

memory/1684-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

memory/1684-1-0x0000000000A10000-0x0000000000A82000-memory.dmp

memory/1684-2-0x00000000749F0000-0x00000000750DE000-memory.dmp

memory/1684-3-0x0000000001E90000-0x0000000001ED0000-memory.dmp

memory/1684-4-0x00000000749F0000-0x00000000750DE000-memory.dmp

memory/1684-5-0x0000000001F10000-0x0000000001F4E000-memory.dmp

memory/2528-9-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2528-22-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2528-20-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2528-18-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2528-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2528-15-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2528-13-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2528-11-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3012-23-0x00000000028B0000-0x00000000028F0000-memory.dmp

memory/1684-24-0x00000000749F0000-0x00000000750DE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 09:13

Reported

2024-06-15 09:15

Platform

win10v2004-20240611-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe"

Signatures

AsyncRat

rat asyncrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HWMonitor = "C:\\Users\\Admin\\AppData\\Roaming\\zqezihjic ubtsgkjwx\\HWMonitor.exe" C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4732 set thread context of 484 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4732 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4732 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4732 wrote to memory of 1212 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4732 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4732 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4732 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4732 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4732 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4732 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4732 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4732 wrote to memory of 484 N/A C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\adb3eb6b7d80dcd872e093cece6ff545_JaffaCakes118.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'HWMonitor';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'HWMonitor' -Value '"C:\Users\Admin\AppData\Roaming\zqezihjic ubtsgkjwx\HWMonitor.exe"' -PropertyType 'String'

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.72:443 www.bing.com tcp
NL 23.62.61.72:443 www.bing.com tcp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 72.61.62.23.in-addr.arpa udp
DE 79.134.225.92:7707 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 35.15.31.184.in-addr.arpa udp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
N/A 127.0.0.1:6606 tcp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
DE 79.134.225.92:7707 tcp
N/A 127.0.0.1:6606 tcp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp

Files

memory/4732-0-0x000000007526E000-0x000000007526F000-memory.dmp

memory/4732-1-0x0000000000390000-0x0000000000402000-memory.dmp

memory/4732-2-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/4732-3-0x0000000004D70000-0x0000000004DB0000-memory.dmp

memory/4732-4-0x00000000053D0000-0x0000000005974000-memory.dmp

memory/4732-5-0x0000000004EC0000-0x0000000004F52000-memory.dmp

memory/4732-6-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

memory/4732-7-0x0000000005110000-0x0000000005186000-memory.dmp

memory/4732-8-0x000000007526E000-0x000000007526F000-memory.dmp

memory/4732-9-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/4732-10-0x0000000005090000-0x00000000050CE000-memory.dmp

memory/4732-11-0x00000000050F0000-0x000000000510E000-memory.dmp

memory/484-13-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1212-16-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/1212-17-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/4732-19-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/1212-18-0x0000000005880000-0x0000000005EA8000-memory.dmp

memory/1212-15-0x0000000005120000-0x0000000005156000-memory.dmp

memory/1212-20-0x00000000055F0000-0x0000000005612000-memory.dmp

memory/1212-22-0x0000000005F60000-0x0000000005FC6000-memory.dmp

memory/1212-23-0x00000000060D0000-0x0000000006424000-memory.dmp

memory/1212-21-0x0000000005690000-0x00000000056F6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4xr5assq.2x0.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/484-35-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/1212-33-0x00000000066C0000-0x00000000066DE000-memory.dmp

memory/1212-34-0x00000000066E0000-0x000000000672C000-memory.dmp

memory/1212-36-0x00000000076A0000-0x0000000007736000-memory.dmp

memory/1212-38-0x0000000006BF0000-0x0000000006C12000-memory.dmp

memory/1212-37-0x0000000006BA0000-0x0000000006BBA000-memory.dmp

memory/1212-41-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/484-42-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/484-43-0x0000000075260000-0x0000000075A10000-memory.dmp