Malware Analysis Report

2025-08-10 20:54

Sample ID 240825-hqmvba1cma
Target c0303c8fba00b5ce0737a67a5e560666_JaffaCakes118
SHA256 0c011a19096b8d46b6e3c194c3d077fe13fe0c4a1a7d9cd4ed7b0f19e4a30607
Tags
discovery persistence
score
6/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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
6/10

SHA256

0c011a19096b8d46b6e3c194c3d077fe13fe0c4a1a7d9cd4ed7b0f19e4a30607

Threat Level: Shows suspicious behavior

The file c0303c8fba00b5ce0737a67a5e560666_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery persistence

Adds Run key to start application

Unsigned PE

System Location Discovery: System Language Discovery

Modifies registry key

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-25 06:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-25 06:56

Reported

2024-08-25 06:59

Platform

win7-20240704-en

Max time kernel

117s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c0303c8fba00b5ce0737a67a5e560666_JaffaCakes118.dll,#1

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\usnscv = "\"C:\\Users\\Admin\\AppData\\Roaming\\usnscv.exe \"" C:\Windows\SysWOW64\reg.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Modifies registry key

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\reg.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2544 wrote to memory of 2400 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2544 wrote to memory of 2400 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2544 wrote to memory of 2400 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2544 wrote to memory of 2400 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2544 wrote to memory of 2400 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2544 wrote to memory of 2400 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2544 wrote to memory of 2400 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2400 wrote to memory of 1732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2400 wrote to memory of 1732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2400 wrote to memory of 1732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2400 wrote to memory of 1732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2400 wrote to memory of 1732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2400 wrote to memory of 1732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2400 wrote to memory of 1732 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1732 wrote to memory of 1940 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 1732 wrote to memory of 1940 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 1732 wrote to memory of 1940 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 1732 wrote to memory of 1940 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 1940 wrote to memory of 2784 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1940 wrote to memory of 2784 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1940 wrote to memory of 2784 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1940 wrote to memory of 2784 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c0303c8fba00b5ce0737a67a5e560666_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c0303c8fba00b5ce0737a67a5e560666_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\cmd.exe

cmd /c setup.bat

C:\Windows\SysWOW64\cmd.exe

cmd /c REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V usnscv /D "\"C:\Users\Admin\AppData\Roaming\usnscv.exe \"" /f

C:\Windows\SysWOW64\reg.exe

REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V usnscv /D "\"C:\Users\Admin\AppData\Roaming\usnscv.exe \"" /f

Network

N/A

Files

memory/2400-0-0x0000000000670000-0x0000000000691000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\setup.bat

MD5 ff9d19a15222e7ecf65ebf0442a5ead1
SHA1 abd8960adca68c5f1e49734e034c1ebed5000e95
SHA256 873405790f4c7ac4b031be8b9bab98f56fbe13de07b2576a832e19ade31e135b
SHA512 392c5f9178577f00ee2e42d5c16834c006f75b28d8695c79dbdd34cde89d01b2d982b470ddb7f239ae1eb6ddfa646c060c7951224b88382d0b9ff7dea4b86af0

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-25 06:56

Reported

2024-08-25 06:59

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

140s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c0303c8fba00b5ce0737a67a5e560666_JaffaCakes118.dll,#1

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\usnscv = "\"C:\\Users\\Admin\\AppData\\Roaming\\usnscv.exe \"" C:\Windows\SysWOW64\reg.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A

Modifies registry key

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\reg.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1844 wrote to memory of 3556 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1844 wrote to memory of 3556 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1844 wrote to memory of 3556 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3556 wrote to memory of 1860 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 3556 wrote to memory of 1860 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 3556 wrote to memory of 1860 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1860 wrote to memory of 1272 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 1860 wrote to memory of 1272 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 1860 wrote to memory of 1272 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 1272 wrote to memory of 3972 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1272 wrote to memory of 3972 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1272 wrote to memory of 3972 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c0303c8fba00b5ce0737a67a5e560666_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c0303c8fba00b5ce0737a67a5e560666_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c setup.bat

C:\Windows\SysWOW64\cmd.exe

cmd /c REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V usnscv /D "\"C:\Users\Admin\AppData\Roaming\usnscv.exe \"" /f

C:\Windows\SysWOW64\reg.exe

REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V usnscv /D "\"C:\Users\Admin\AppData\Roaming\usnscv.exe \"" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 52.111.227.11:443 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

C:\Users\Admin\AppData\Local\Temp\setup.bat

MD5 ff9d19a15222e7ecf65ebf0442a5ead1
SHA1 abd8960adca68c5f1e49734e034c1ebed5000e95
SHA256 873405790f4c7ac4b031be8b9bab98f56fbe13de07b2576a832e19ade31e135b
SHA512 392c5f9178577f00ee2e42d5c16834c006f75b28d8695c79dbdd34cde89d01b2d982b470ddb7f239ae1eb6ddfa646c060c7951224b88382d0b9ff7dea4b86af0