9b3f1fc61bd7d917f93d430f29b509339301f235accac84ede7720dae6a27fb4

Analysis

max time kernel
139s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-10-2024 14:00

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General

Target

42a367375f45781534bd709bbb2ac2ea_JaffaCakes118.dll
Size

68KB
MD5

42a367375f45781534bd709bbb2ac2ea
SHA1

e3d2f3c21c8bda8525a9a636b30d09e55c586d87
SHA256

9b3f1fc61bd7d917f93d430f29b509339301f235accac84ede7720dae6a27fb4
SHA512

59bfdb3b196581c6264d8f431d220f363231a3e109a05c13caa3064c7100a924c1fd88f92bf88fcdf66bbcccde95d093a389eec8b64957a954efe462aef853fd
SSDEEP

1536:2a8gozIs+kX+Rfiu/ZHCoAUK/i7l7X0R72ysOIRDqoweTXS:2a8goukYqoAUgsl7XM78jDq4

Score

6^/10

adware discovery stealer upx

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

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

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{37566535-A634-5164-5467-5A56453BD4FA}	regsvr32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3160-1-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3160-2-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3160-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 13 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{37566535-A634-5164-5467-5A56453BD4FA}\ = "Microsoft"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{37566535-A634-5164-5467-5A56453BD4FA}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\42a367375f45781534bd709bbb2ac2ea_JaffaCakes118.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{37566535-A634-5164-5467-5A56453BD4FA}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\42a367375f45781534bd709bbb2ac2ea_JaffaCakes118.Microsoft	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\42a367375f45781534bd709bbb2ac2ea_JaffaCakes118.Microsoft\ = "Microsoft"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\42a367375f45781534bd709bbb2ac2ea_JaffaCakes118.Microsoft\Clsid\ = "{37566535-A634-5164-5467-5A56453BD4FA}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{37566535-A634-5164-5467-5A56453BD4FA}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\HTTP\shell\open\command	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{37566535-A634-5164-5467-5A56453BD4FA}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{37566535-A634-5164-5467-5A56453BD4FA}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\42a367375f45781534bd709bbb2ac2ea_JaffaCakes118.Microsoft\Clsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{37566535-A634-5164-5467-5A56453BD4FA}\ProgID\ = "42a367375f45781534bd709bbb2ac2ea_JaffaCakes118.Microsoft"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\http\shell\open\command\ = "\"C:\\Program Files\\Internet Explorer\\iexplore.exe\" http://google.com"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 3160	1652	regsvr32.exe	83
PID 1652 wrote to memory of 3160	1652	regsvr32.exe	83
PID 1652 wrote to memory of 3160	1652	regsvr32.exe	83

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\42a367375f45781534bd709bbb2ac2ea_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\42a367375f45781534bd709bbb2ac2ea_JaffaCakes118.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:3160

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3160-0-0x0000000000530000-0x0000000000561000-memory.dmp

Filesize
196KB

Download
memory/3160-1-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3160-2-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3160-3-0x0000000000530000-0x0000000000561000-memory.dmp

Filesize
196KB

Download
memory/3160-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download