Malware Analysis Report

2025-01-18 21:45

Sample ID 240414-3z92esbg7z
Target efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118
SHA256 db135a77e47c9aef63512a95c074a3c3dc07b762f80f63b8f25fb9dec6bb8b57
Tags
persistence adware stealer
score
7/10

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
7/10

SHA256

db135a77e47c9aef63512a95c074a3c3dc07b762f80f63b8f25fb9dec6bb8b57

Threat Level: Shows suspicious behavior

The file efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence adware stealer

Executes dropped EXE

Deletes itself

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Installs/modifies Browser Helper Object

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Modifies registry class

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-14 23:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-14 23:58

Reported

2024-04-15 00:00

Platform

win7-20240221-en

Max time kernel

142s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe"

Signatures

Deletes itself

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

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Run\System reservation = "C:\\Users\\Admin\\AppData\\Local\\Temp\\svchots.exe" C:\Users\Admin\AppData\Local\Temp\svchots.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\lsejkf94mjgfr.dll C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1600 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 1600 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 1600 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 1600 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 1600 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 1600 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 1600 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 1600 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchots.exe
PID 1600 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchots.exe
PID 1600 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchots.exe
PID 1600 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchots.exe
PID 1600 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\explorer.exe
PID 1600 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\explorer.exe
PID 1600 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\explorer.exe
PID 1600 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\explorer.exe
PID 1600 wrote to memory of 2460 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1600 wrote to memory of 2460 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1600 wrote to memory of 2460 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1600 wrote to memory of 2460 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe"

C:\Windows\SysWOW64\Regsvr32.exe

Regsvr32.exe /s C:\Windows\system32\lsejkf94mjgfr.dll

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

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

C:\Windows\SysWOW64\explorer.exe

explorer.exe

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\p2hhr.bat" "C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe""

Network

Country Destination Domain Proto
US 8.8.8.8:53 bonpyrrol.info udp
US 8.8.8.8:53 bonpyrrol.info udp
DE 178.162.203.202:80 bonpyrrol.info tcp
DE 178.162.217.107:80 bonpyrrol.info tcp
NL 5.79.71.205:80 bonpyrrol.info tcp
NL 5.79.71.225:80 bonpyrrol.info tcp
NL 85.17.31.82:80 bonpyrrol.info tcp

Files

memory/1600-1-0x0000000000400000-0x000000000040B000-memory.dmp

memory/1600-2-0x0000000000020000-0x0000000000021000-memory.dmp

C:\Windows\SysWOW64\lsejkf94mjgfr.dll

MD5 2bdf3cb785830f770359ca728f243f4d
SHA1 4a56c362b56f4a3fa54d381cda3bd70c023dcff5
SHA256 fc476137fd0450ac72d9661fbf21d4d829d8dccb18688f4bddfc325a167dbd44
SHA512 c0796c80000d590a56824dceb9af62322aa0416bc5df54181f09be5685219ce87d00acdbc064dafdc0accc33f01ada987eaf4ff4ae9c84e84b99097968328e63

memory/2180-6-0x0000000010000000-0x0000000010009000-memory.dmp

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

MD5 46538bf67eeb53011b5e0623a0d9c01c
SHA1 50ea6eb9a20f4caf9899e617d5f7c022e6b22a39
SHA256 4acaba386106a131ffc3ba71892052194eb6ed4dd45acf7cc503ac3e1f1f0396
SHA512 80b26b3632ac328d79902fc13197023dbad3d740ab10b685634046ce30684c2d767b8f6d80c222cf3bd97a3422d7ca7bfac340c1aca13911b76cfd2663eb6509

memory/1600-15-0x0000000000230000-0x0000000000236000-memory.dmp

memory/1600-17-0x0000000000230000-0x0000000000236000-memory.dmp

memory/2080-18-0x0000000000400000-0x0000000000406000-memory.dmp

memory/2080-19-0x0000000000020000-0x0000000000021000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\p2hhr.bat

MD5 76d2c58bc389bc1cc18aed4ff486a1a2
SHA1 421c4d20655a1270415e550fa9cc8831576abbf6
SHA256 e8efa9da7c7006640c2f883bec45cc3013dda102fb4ae74dbd45b676c77820bf
SHA512 241642d717fbf37c3f0970921f37246c5484a3763cde23dfe0e830ed26bb9347253b68e659a70e7e6017c883024c0ef678023f0b927438d1bda16f89f40d412e

memory/1600-28-0x0000000000400000-0x000000000040B000-memory.dmp

memory/2080-30-0x0000000000400000-0x0000000000406000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-14 23:58

Reported

2024-04-15 00:00

Platform

win10v2004-20240412-en

Max time kernel

142s

Max time network

113s

Command Line

"C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe N/A

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Regsvr32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System reservation = "C:\\Users\\Admin\\AppData\\Local\\Temp\\svchots.exe" C:\Users\Admin\AppData\Local\Temp\svchots.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C} C:\Windows\SysWOW64\Regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{20AD49A2-94F3-42bD-F434-2604812C897C} C:\Windows\SysWOW64\Regsvr32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\lsejkf94mjgfr.dll C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{20AD49A2-94F3-42bD-F434-2604812C897C}\InProcServer32\ = "C:\\Windows\\SysWow64\\lsejkf94mjgfr.dll" C:\Windows\SysWOW64\Regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{20AD49A2-94F3-42bD-F434-2604812C897C}\InProcServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\Regsvr32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000_Classes\Local Settings C:\Windows\SysWOW64\explorer.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{20AD49A2-94F3-42bD-F434-2604812C897C} C:\Windows\SysWOW64\Regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{20AD49A2-94F3-42bD-F434-2604812C897C}\ = "C:\\Windows\\SysWow64\\lsejkf94mjgfr.dll" C:\Windows\SysWOW64\Regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{20AD49A2-94F3-42bD-F434-2604812C897C}\ThreadingModel = "Apartment" C:\Windows\SysWOW64\Regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{20AD49A2-94F3-42bD-F434-2604812C897C}\InProcServer32 C:\Windows\SysWOW64\Regsvr32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3308 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 3308 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 3308 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\Regsvr32.exe
PID 3308 wrote to memory of 4812 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchots.exe
PID 3308 wrote to memory of 4812 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchots.exe
PID 3308 wrote to memory of 4812 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svchots.exe
PID 3308 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\explorer.exe
PID 3308 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\explorer.exe
PID 3308 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\explorer.exe
PID 3308 wrote to memory of 1952 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 3308 wrote to memory of 1952 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 3308 wrote to memory of 1952 N/A C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe"

C:\Windows\SysWOW64\Regsvr32.exe

Regsvr32.exe /s C:\Windows\system32\lsejkf94mjgfr.dll

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

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

C:\Windows\SysWOW64\explorer.exe

explorer.exe

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\p2hhr.bat" "C:\Users\Admin\AppData\Local\Temp\efd11bbe86040a2c6bba36b7bdf68a7d_JaffaCakes118.exe""

Network

Country Destination Domain Proto
US 8.8.8.8:53 bonpyrrol.info udp
DE 178.162.203.211:80 bonpyrrol.info tcp
DE 178.162.203.211:80 bonpyrrol.info tcp
US 8.8.8.8:53 211.203.162.178.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp

Files

memory/3308-0-0x0000000000400000-0x000000000040B000-memory.dmp

memory/3308-1-0x00000000001C0000-0x00000000001C1000-memory.dmp

C:\Windows\SysWOW64\lsejkf94mjgfr.dll

MD5 2bdf3cb785830f770359ca728f243f4d
SHA1 4a56c362b56f4a3fa54d381cda3bd70c023dcff5
SHA256 fc476137fd0450ac72d9661fbf21d4d829d8dccb18688f4bddfc325a167dbd44
SHA512 c0796c80000d590a56824dceb9af62322aa0416bc5df54181f09be5685219ce87d00acdbc064dafdc0accc33f01ada987eaf4ff4ae9c84e84b99097968328e63

memory/748-5-0x0000000010000000-0x0000000010009000-memory.dmp

memory/748-6-0x0000000001E20000-0x0000000001E21000-memory.dmp

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

MD5 46538bf67eeb53011b5e0623a0d9c01c
SHA1 50ea6eb9a20f4caf9899e617d5f7c022e6b22a39
SHA256 4acaba386106a131ffc3ba71892052194eb6ed4dd45acf7cc503ac3e1f1f0396
SHA512 80b26b3632ac328d79902fc13197023dbad3d740ab10b685634046ce30684c2d767b8f6d80c222cf3bd97a3422d7ca7bfac340c1aca13911b76cfd2663eb6509

memory/4812-10-0x0000000000400000-0x0000000000406000-memory.dmp

memory/4812-12-0x00000000001C0000-0x00000000001C1000-memory.dmp

memory/3308-17-0x0000000000400000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\p2hhr.bat

MD5 76d2c58bc389bc1cc18aed4ff486a1a2
SHA1 421c4d20655a1270415e550fa9cc8831576abbf6
SHA256 e8efa9da7c7006640c2f883bec45cc3013dda102fb4ae74dbd45b676c77820bf
SHA512 241642d717fbf37c3f0970921f37246c5484a3763cde23dfe0e830ed26bb9347253b68e659a70e7e6017c883024c0ef678023f0b927438d1bda16f89f40d412e

memory/4812-19-0x0000000000400000-0x0000000000406000-memory.dmp