Malware Analysis Report

2024-09-11 10:03

Sample ID 240406-j6y3yseb7x
Target dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118
SHA256 ec1a5fbd6a5ca09382dd4b71f473657eba1a4a6e0982bcd01697821ca24d84f9
Tags
limerat
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

ec1a5fbd6a5ca09382dd4b71f473657eba1a4a6e0982bcd01697821ca24d84f9

Threat Level: Known bad

The file dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

limerat

Limerat family

Unsigned PE

Suspicious use of WriteProcessMemory

Checks processor information in registry

Enumerates system info in registry

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-04-06 08:17

Signatures

Limerat family

limerat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 08:17

Reported

2024-04-06 08:20

Platform

win7-20240221-en

Max time kernel

117s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe"

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3028 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
PID 3028 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
PID 3028 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
PID 3028 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe

Processes

C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe

dw20.exe -x -s 424

Network

N/A

Files

memory/3028-2-0x0000000000110000-0x0000000000150000-memory.dmp

memory/3028-1-0x0000000074090000-0x000000007463B000-memory.dmp

memory/3028-0-0x0000000074090000-0x000000007463B000-memory.dmp

memory/2196-3-0x0000000001DB0000-0x0000000001DB1000-memory.dmp

memory/3028-4-0x0000000074090000-0x000000007463B000-memory.dmp

memory/3028-5-0x0000000000110000-0x0000000000150000-memory.dmp

memory/2196-6-0x0000000001DB0000-0x0000000001DB1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 08:17

Reported

2024-04-06 08:20

Platform

win10v2004-20231215-en

Max time kernel

93s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe"

Signatures

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4404 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
PID 4404 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
PID 4404 wrote to memory of 4672 N/A C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe

Processes

C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\dfd9612cb55b1cfc4a33d9fdaf8ed070_JaffaCakes118.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe

dw20.exe -x -s 840

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 239.249.30.184.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/4404-0-0x0000000074BC0000-0x0000000075171000-memory.dmp

memory/4404-1-0x0000000000A50000-0x0000000000A60000-memory.dmp

memory/4404-2-0x0000000074BC0000-0x0000000075171000-memory.dmp

memory/4404-9-0x0000000074BC0000-0x0000000075171000-memory.dmp