57f40bafc8fc1f0b3efee13c49382b43c651b13e1db7b3ea7a20bc6bd3f402b7

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
23-07-2024 09:12

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General

Target

66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe
Size

80KB
MD5

66f6cc675747ea29354d217425461d2b
SHA1

fdf3bbcf4e6bed8bb1d2a720cc73dec79f1e847b
SHA256

57f40bafc8fc1f0b3efee13c49382b43c651b13e1db7b3ea7a20bc6bd3f402b7
SHA512

b8b977abbcb08f286971ceb1d467816121b030cb828113a63fa9e02ddffbedcceb93edc0ff4ad97a5e1b4bcffddb4153fca8fbe4cf07687034fbb34ffada5a6c
SSDEEP

1536:FQLnySgPuHzpak7EuvFd/Et6pirwzHZj7vaaXK5OQleMS49lQAiL3E8ccl:FQLnyS9HRAcWeiAHZjjauK5OQl44pyc

Score

7^/10

adware stealer upx

Malware Config

Signatures

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe

Loads dropped DLL 1 IoCs

pid	Process
1952	regsvr32.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2412-0-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral1/memory/2412-4-0x0000000000400000-0x0000000000420000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D88E1558-7C2D-407A-953A-C044F5607CEA}\NoExplorer = "1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D88E1558-7C2D-407A-953A-C044F5607CEA}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D88E1558-7C2D-407A-953A-C044F5607CEA}\ = "HelloWorldBHO"	regsvr32.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Mjcore\Mjcore.dll	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	regsvr32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosDate	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosDate	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe

Modifies registry class 50 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\BHO_MyJavaCore.DLL\AppID = "{80EF304A-B1C4-425C-8535-95AB6F1EEFB8}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\ProgID\ = "BHO_MyJavaCore.Mjcore.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}\1.0\ = "BHO_MyJavaCore 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\InprocServer32\ = "C:\\Program Files (x86)\\Mjcore\\Mjcore.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{80EF304A-B1C4-425C-8535-95AB6F1EEFB8}\ = "BHO_MyJavaCore"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\ = "Mjcore Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}\1.0\0\win32\ = "C:\\Program Files (x86)\\Mjcore\\Mjcore.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\ = "IMjcore"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore\ = "Mjcore Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\ = "IMjcore"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore\CurVer\ = "BHO_MyJavaCore.Mjcore.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{80EF304A-B1C4-425C-8535-95AB6F1EEFB8}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\VersionIndependentProgID\ = "BHO_MyJavaCore.Mjcore"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}\1.0\HELPDIR\ = "C:\\Program Files (x86)\\Mjcore"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\TypeLib\ = "{E0F01490-DCF3-4357-95AA-169A8C2B2190}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\BHO_MyJavaCore.DLL	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E0F01490-DCF3-4357-95AA-169A8C2B2190}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore.1\ = "Mjcore Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D88E1558-7C2D-407A-953A-C044F5607CEA}\TypeLib\ = "{E0F01490-DCF3-4357-95AA-169A8C2B2190}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore.1\CLSID\ = "{D88E1558-7C2D-407A-953A-C044F5607CEA}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO_MyJavaCore.Mjcore\CLSID\ = "{D88E1558-7C2D-407A-953A-C044F5607CEA}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17E44256-51E0-4D46-A0C8-44E80AB4BA5B}\TypeLib\ = "{E0F01490-DCF3-4357-95AA-169A8C2B2190}"	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe
2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe
2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe
2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe
2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 1912	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	31
PID 2412 wrote to memory of 1912	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	31
PID 2412 wrote to memory of 1912	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	31
PID 2412 wrote to memory of 1912	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	31
PID 2412 wrote to memory of 2176	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	33
PID 2412 wrote to memory of 2176	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	33
PID 2412 wrote to memory of 2176	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	33
PID 2412 wrote to memory of 2176	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	33
PID 2412 wrote to memory of 2300	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	35
PID 2412 wrote to memory of 2300	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	35
PID 2412 wrote to memory of 2300	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	35
PID 2412 wrote to memory of 2300	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	35
PID 2412 wrote to memory of 2060	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	37
PID 2412 wrote to memory of 2060	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	37
PID 2412 wrote to memory of 2060	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	37
PID 2412 wrote to memory of 2060	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	37
PID 2412 wrote to memory of 2624	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	39
PID 2412 wrote to memory of 2624	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	39
PID 2412 wrote to memory of 2624	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	39
PID 2412 wrote to memory of 2624	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	39
PID 2412 wrote to memory of 1952	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	41
PID 2412 wrote to memory of 1952	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	41
PID 2412 wrote to memory of 1952	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	41
PID 2412 wrote to memory of 1952	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	41
PID 2412 wrote to memory of 1952	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	41
PID 2412 wrote to memory of 1952	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	41
PID 2412 wrote to memory of 1952	2412	66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe	41

C:\Users\Admin\AppData\Local\Temp\66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\66f6cc675747ea29354d217425461d2b_JaffaCakes118.exe"
1⤵
- Checks BIOS information in registry
- Drops file in Program Files directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c rmdir /S /Q "C:\Program Files (x86)\Insider\"
  2⤵
  PID:1912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c rmdir /S /Q "C:\Program Files (x86)\Router\"
  2⤵
  PID:2176
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c rmdir /S /Q "C:\Program Files (x86)\JavaCore\"
  2⤵
  PID:2300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c rmdir /S /Q "C:\Program Files (x86)\Eroca\"
  2⤵
  PID:2060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c rmdir /S /Q "C:\Program Files (x86)\mjc\"
  2⤵
  PID:2624
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe /s "C:\Program Files (x86)\Mjcore\Mjcore.dll"
  2⤵
  - Checks BIOS information in registry
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Checks processor information in registry
  - Enumerates system info in registry
  - Modifies registry class
  PID:1952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Mjcore\Mjcore.dll

Filesize
112KB

MD5
7ef8c70f20b40dc8f9802993ce7ea1d1

SHA1
ee021a3e1abd2f162407a81d93a649e6c3aae346

SHA256
e811a54532d4fb244372b498fcfd15380a216d96e9083e53cb0672b91cadb489

SHA512
f7378158cb82234b393bf053a7a1ab6498dfc9a3b79299b735d3cfc3ace6db2b362a41bca9acf529f862cd73bd2d6260393b90021735a6847e3ca33ea206e11f

Download Submit
memory/2412-0-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2412-4-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download