Malware Analysis Report

2024-10-19 10:47

Sample ID 240620-hf2kqayenr
Target 03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118
SHA256 25705af0a5b07fd75329f3f060a77849aab5c4a2bb93c4d3d5b4e30cdc7c5493
Tags
aspackv2 adware persistence 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

25705af0a5b07fd75329f3f060a77849aab5c4a2bb93c4d3d5b4e30cdc7c5493

Threat Level: Shows suspicious behavior

The file 03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

aspackv2 adware persistence stealer

ASPack v2.12-2.42

Loads dropped DLL

Adds Run key to start application

Installs/modifies Browser Helper Object

Drops file in System32 directory

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-20 06:41

Signatures

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 06:41

Reported

2024-06-20 06:44

Platform

win7-20231129-en

Max time kernel

118s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2232 -s 96

Network

N/A

Files

memory/2232-0-0x0000000000400000-0x00000000004AC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 06:41

Reported

2024-06-20 06:44

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

151s

Command Line

C:\Windows\Explorer.EXE

Signatures

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EO0CRKl = "C:\\Windows\\system32\\EO0CRKl.exe" C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{94AC7942-7BE1-4FB9-A7CA-67CD88362758} C:\Windows\SysWOW64\regsvr32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\EO0CRKl10.dll C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\EO0CRKl.exe C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\EO0CRKl.exe C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\EO0CRKl20.dll C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\EO0CRKl20.dll C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\EO0CRKl10.dll C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\FLAGS\ = "0" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\ = "IEHelper 1.0 Type Library" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ProxyStubClsid32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\ = "IEHlprObj Class" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\VersionIndependentProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\ = "IEHlprObj Class" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib\ = "{94AC7948-7BE1-4FB9-A7CA-67CD88362758}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib\Version = "1.0" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\ = "IEHlprObj Class" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\InprocServer32\ = "C:\\Windows\\SysWow64\\EO0CRKl20.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ = "IIEHlprObj" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ = "IIEHlprObj" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ProxyStubClsid32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib\ = "{94AC7948-7BE1-4FB9-A7CA-67CD88362758}" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer\ = "IEHlprObj.IEHlprObj.1" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\VersionIndependentProgID\ = "IEHlprObj.IEHlprObj" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\EO0CRKl20.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\0\win32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\HELPDIR\ = "C:\\Windows\\SysWow64\\" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\TypeLib\Version = "1.0" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\Programmable C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\0 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\HELPDIR C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{94AC7941-7BE1-4FB9-A7CA-67CD88362758}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID\ = "{94AC7942-7BE1-4FB9-A7CA-67CD88362758}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94AC7942-7BE1-4FB9-A7CA-67CD88362758}\ProgID\ = "IEHlprObj.IEHlprObj.1" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{94AC7948-7BE1-4FB9-A7CA-67CD88362758}\1.0\FLAGS C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\03b9785568f7a6fd0b5a1f4ea78452c1_JaffaCakes118.exe"

C:\Windows\SysWOW64\regsvr32.exe

C:\Windows\system32\regsvr32.exe /s C:\Windows\system32\EO0CRKl20.dll

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 3524 -ip 3524

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3524 -s 476

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 4.173.189.20.in-addr.arpa udp

Files

memory/3524-0-0x0000000000400000-0x00000000004AC000-memory.dmp

C:\Windows\SysWOW64\EO0CRKl20.dll

MD5 59cc50390cad44b281b20bb771c44835
SHA1 62c941343233c001a6a095a33a60eb47d6f55500
SHA256 4ae5bf8ef6335e5a06fa3232de43e50ee06f2c8d51c6a1e341d40cd03fb489b5
SHA512 81401ee0fea1bfc543bf16d3cd4b785a70acc5f5c4dc15b737e46409c98d23a4f265a996444bd614529d4886a03916b76223023b874d91d3c4aab36c8e69bbac

memory/2964-8-0x0000000010000000-0x000000001006F000-memory.dmp

C:\Windows\SysWOW64\EO0CRKl10.dll

MD5 7daa7e8ae1b87690d652bd324d372a9b
SHA1 64606cbc9f319662f315d7fdf8a5ed8b9ec3f163
SHA256 52669174c55fcd0fa6af47044205bee4d3d84bfdb85ad81574e2f45e39db98ff
SHA512 e312f2c74dd31da7463fc525716c0f9935e11d60130eb232ea525ff8a35187fefbbf71fdb1c99b91507b5e7f41eb990f0e0196c3663903a2cca43e6774bdfd5c

memory/3524-13-0x0000000010000000-0x0000000010077000-memory.dmp

memory/3524-14-0x0000000000400000-0x00000000004AC000-memory.dmp