Malware Analysis Report

2025-04-13 22:07

Sample ID 240825-lvp21szdlk
Target c07a659cd84fc38218b9884f295a814b_JaffaCakes118
SHA256 b5abc091aa81a6bd56d9234f3eef538e082b69544608ffae7f855307b457ec5e
Tags
discovery
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral6

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

b5abc091aa81a6bd56d9234f3eef538e082b69544608ffae7f855307b457ec5e

Threat Level: Shows suspicious behavior

The file c07a659cd84fc38218b9884f295a814b_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery

Loads dropped DLL

Executes dropped EXE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

NSIS installer

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-25 09:51

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-25 09:51

Reported

2024-08-25 09:54

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c07a659cd84fc38218b9884f295a814b_JaffaCakes118.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\nskB930.tmp\downloadmr.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c07a659cd84fc38218b9884f295a814b_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\nskB930.tmp\downloadmr.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\nskB930.tmp\downloadmr.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\nskB930.tmp\downloadmr.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c07a659cd84fc38218b9884f295a814b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c07a659cd84fc38218b9884f295a814b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\nskB930.tmp\downloadmr.exe

C:\Users\Admin\AppData\Local\Temp\nskB930.tmp\downloadmr.exe /u4d488269-6268-4c29-b4c2-79305bc06ebe /e498

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 api.downloadmr.com udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.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
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nskB930.tmp\System.dll

MD5 5ebc73650256e9c8ddbcda231db829a1
SHA1 988d4535e18754ab2a6248abae96c5697d7dbcd5
SHA256 1eaa543842df7795404184e8892a1654b0773dbc9bd8b54c7fdb9e68f4355493
SHA512 b21266e76fc7263af982a1336a766e47ccf348ed56b305dbb09f03574c9b2a7309f12200e80d86f9a251381be6e87a41206447f11c51899cb31fba10da1d5270

C:\Users\Admin\AppData\Local\Temp\nskB930.tmp\downloadmr.exe

MD5 da254a8488b60244654e1cf4d6796cf8
SHA1 23d06f4589786652a3a226b5012a5520a3d03452
SHA256 6d3b82a7ad74a1e88ae4d0f9176082130f1558fb3ff42a8b45ca8b80445efc2d
SHA512 d311f90ad65441f6c7ae55220c2c3f117aa7601d083e6847e1b58b96c3c332d68a25d445310818396dc88678fb9ec5356f35a04a392c3d23746a2231e14b0a2e

memory/5000-13-0x00000000740A2000-0x00000000740A3000-memory.dmp

memory/5000-14-0x00000000740A0000-0x0000000074651000-memory.dmp

memory/5000-15-0x00000000740A0000-0x0000000074651000-memory.dmp

memory/5000-16-0x00000000740A0000-0x0000000074651000-memory.dmp

memory/5000-17-0x00000000740A0000-0x0000000074651000-memory.dmp

memory/5000-18-0x00000000740A0000-0x0000000074651000-memory.dmp

memory/5000-19-0x00000000740A0000-0x0000000074651000-memory.dmp

memory/5000-20-0x00000000740A0000-0x0000000074651000-memory.dmp

memory/5000-21-0x00000000740A2000-0x00000000740A3000-memory.dmp

memory/5000-22-0x00000000740A0000-0x0000000074651000-memory.dmp

memory/5000-24-0x00000000740A0000-0x0000000074651000-memory.dmp

memory/2788-28-0x0000000000400000-0x000000000043F000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-08-25 09:51

Reported

2024-08-25 09:54

Platform

win7-20240708-en

Max time kernel

140s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

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

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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2760 -s 224

Network

N/A

Files

memory/2760-0-0x000000006E3C0000-0x000000006E3CD000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-08-25 09:51

Reported

2024-08-25 09:54

Platform

win10v2004-20240802-en

Max time kernel

137s

Max time network

146s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

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

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2532 wrote to memory of 4560 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2532 wrote to memory of 4560 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2532 wrote to memory of 4560 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4560 -ip 4560

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 620

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
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 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp

Files

memory/4560-0-0x000000006E3C0000-0x000000006E3CD000-memory.dmp

Analysis: behavioral5

Detonation Overview

Submitted

2024-08-25 09:51

Reported

2024-08-25 09:54

Platform

win7-20240708-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\downloadmr.exe"

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\downloadmr.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\downloadmr.exe

"C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\downloadmr.exe"

Network

N/A

Files

memory/1680-0-0x0000000074051000-0x0000000074052000-memory.dmp

memory/1680-1-0x0000000074050000-0x00000000745FB000-memory.dmp

memory/1680-2-0x0000000074050000-0x00000000745FB000-memory.dmp

memory/1680-3-0x0000000074050000-0x00000000745FB000-memory.dmp

Analysis: behavioral6

Detonation Overview

Submitted

2024-08-25 09:51

Reported

2024-08-25 09:54

Platform

win10v2004-20240802-en

Max time kernel

136s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\downloadmr.exe"

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\downloadmr.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\downloadmr.exe

"C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\downloadmr.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
IE 52.111.236.23:443 tcp
US 8.8.8.8:53 29.243.111.52.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

memory/4100-0-0x00000000752D2000-0x00000000752D3000-memory.dmp

memory/4100-1-0x00000000752D0000-0x0000000075881000-memory.dmp

memory/4100-2-0x00000000752D0000-0x0000000075881000-memory.dmp

memory/4100-4-0x00000000752D0000-0x0000000075881000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-25 09:51

Reported

2024-08-25 09:54

Platform

win7-20240708-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c07a659cd84fc38218b9884f295a814b_JaffaCakes118.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\nsy8E1E.tmp\downloadmr.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c07a659cd84fc38218b9884f295a814b_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\nsy8E1E.tmp\downloadmr.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\nsy8E1E.tmp\downloadmr.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\nsy8E1E.tmp\downloadmr.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c07a659cd84fc38218b9884f295a814b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c07a659cd84fc38218b9884f295a814b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\nsy8E1E.tmp\downloadmr.exe

C:\Users\Admin\AppData\Local\Temp\nsy8E1E.tmp\downloadmr.exe /u4d488269-6268-4c29-b4c2-79305bc06ebe /e498

Network

Country Destination Domain Proto
US 8.8.8.8:53 api.downloadmr.com udp

Files

\Users\Admin\AppData\Local\Temp\nsy8E1E.tmp\System.dll

MD5 5ebc73650256e9c8ddbcda231db829a1
SHA1 988d4535e18754ab2a6248abae96c5697d7dbcd5
SHA256 1eaa543842df7795404184e8892a1654b0773dbc9bd8b54c7fdb9e68f4355493
SHA512 b21266e76fc7263af982a1336a766e47ccf348ed56b305dbb09f03574c9b2a7309f12200e80d86f9a251381be6e87a41206447f11c51899cb31fba10da1d5270

\Users\Admin\AppData\Local\Temp\nsy8E1E.tmp\downloadmr.exe

MD5 da254a8488b60244654e1cf4d6796cf8
SHA1 23d06f4589786652a3a226b5012a5520a3d03452
SHA256 6d3b82a7ad74a1e88ae4d0f9176082130f1558fb3ff42a8b45ca8b80445efc2d
SHA512 d311f90ad65441f6c7ae55220c2c3f117aa7601d083e6847e1b58b96c3c332d68a25d445310818396dc88678fb9ec5356f35a04a392c3d23746a2231e14b0a2e

memory/2376-18-0x00000000741F1000-0x00000000741F2000-memory.dmp

memory/2376-19-0x00000000741F0000-0x000000007479B000-memory.dmp

memory/2376-20-0x00000000741F0000-0x000000007479B000-memory.dmp

memory/2376-21-0x00000000741F0000-0x000000007479B000-memory.dmp

memory/2376-22-0x00000000741F0000-0x000000007479B000-memory.dmp

memory/2376-24-0x00000000741F0000-0x000000007479B000-memory.dmp

memory/2376-23-0x00000000741F0000-0x000000007479B000-memory.dmp

memory/2376-25-0x00000000741F0000-0x000000007479B000-memory.dmp

memory/2376-26-0x00000000741F0000-0x000000007479B000-memory.dmp

memory/2120-30-0x0000000000400000-0x000000000043F000-memory.dmp