Malware Analysis Report

2024-09-11 13:01

Sample ID 240613-2rrz7steme
Target a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118
SHA256 3a2a91a0409099b471899c6b793533bc492e1d7af4477fef3d956958249ccbb3
Tags
discovery evasion persistence trojan
score
7/10

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
7/10

SHA256

3a2a91a0409099b471899c6b793533bc492e1d7af4477fef3d956958249ccbb3

Threat Level: Shows suspicious behavior

The file a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery evasion persistence trojan

Registers COM server for autorun

Checks installed software on the system

Checks whether UAC is enabled

Unsigned PE

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Modifies Internet Explorer settings

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
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

2024-06-13 22:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 22:49

Reported

2024-06-13 22:51

Platform

win7-20240611-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe"

Signatures

Registers COM server for autorun

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\LocalServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\LocalServer32\ServerExecutable = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\LocalServer32 C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A

Checks installed software on the system

discovery

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Internet Explorer\Main C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\LocalServer32 C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040}\1.0\HELPDIR C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\TypeLib\Version = "1.0" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\TypeLib\Version = "1.0" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\Programmable C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\LocalServer32\ServerExecutable = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\TypeLib C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\TypeLib\ = "{7E77E9F2-D76B-4D54-B515-9A7F93DF03DF}" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040}\1.0 C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040}\1.0\0\win32 C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\ = "ITinyJSObject" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\ = "TinyJSObject Class" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\Version C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040}\1.0\FLAGS C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\TypeLib C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\ProxyStubClsid32 C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\LocalServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040} C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\ProxyStubClsid32 C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\TypeLib\ = "{157B1AA6-3E5C-404A-9118-C1D91F537040}" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5}\Version\ = "1.0" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040}\1.0\0 C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\TypeLib\ = "{157B1AA6-3E5C-404A-9118-C1D91F537040}" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\TypeLib C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040}\1.0\ = "JSIELib" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326} C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Wow6432Node\CLSID\{F28C2F70-47DE-4EA5-8F6D-7D1476CD1EF5} C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{157B1AA6-3E5C-404A-9118-C1D91F537040}\1.0\FLAGS\ = "0" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326} C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3B3F3AAD-FB97-49FF-BFEE-D22869AC4326}\ = "ITinyJSObject" C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 r1.joburnt.net udp
US 8.8.8.8:53 c1.allocal.info udp
US 8.8.8.8:53 c2.allocal.info udp
US 8.8.8.8:53 r2.joburnt.net udp
US 8.8.8.8:53 c2.allocal.info udp

Files

memory/1688-2-0x00000000020F0000-0x0000000002272000-memory.dmp

memory/1688-10-0x00000000020F0000-0x0000000002272000-memory.dmp

memory/1688-9-0x00000000020F0000-0x0000000002272000-memory.dmp

memory/1688-11-0x00000000020F0000-0x0000000002272000-memory.dmp

memory/1688-12-0x00000000000A0000-0x00000000000A1000-memory.dmp

memory/1688-14-0x00000000000A0000-0x00000000000A1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 22:49

Reported

2024-06-13 22:51

Platform

win10v2004-20240508-en

Max time kernel

52s

Max time network

52s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a6f82a060db8fa2537da9d3f6783ea84_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/372-2-0x00000000027A0000-0x0000000002922000-memory.dmp

memory/372-9-0x00000000027A0000-0x0000000002922000-memory.dmp