b04b790f2d6aa21dbd532522ca290154986c00f96b4cffc408cb01ea83b15e8d

Analysis

max time kernel
97s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13/10/2024, 15:19

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General

Target

4097f074a964a8b3f16291663d3128a4_JaffaCakes118.dll
Size

187KB
MD5

4097f074a964a8b3f16291663d3128a4
SHA1

6a469f93c34c19fb599dd2ac9cc71df277c684c8
SHA256

b04b790f2d6aa21dbd532522ca290154986c00f96b4cffc408cb01ea83b15e8d
SHA512

ff042b4ae2049c18f3f51d5e61297c59cbcc27583bfb78382f560fad2078deb3c8126a2ac930928d229833f10ca7f18de94ea05d7bc644861c45c9cfb8f3a1e0
SSDEEP

1536:de9sSffv8TLImmxnXTHJKFaq1k5D3aZYMybvlCe3ZfBnWWcD2QU5DA57F6uCu3Rs:89NfOVmioblqKtCPW8U98R6uB26wS2

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 created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\NoExplorer = "1"	regsvr32.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3156-0-0x0000000010000000-0x0000000010030000-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 46 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\ = "wybhotool Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\CLSID\ = "{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool.1\ = "wybhotool Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}\1.0\ = "WYBHO 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\ProgID\ = "WYBHO.wybhotool.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\TypeLib\ = "{33B67EF7-9400-48FC-A75F-0351ADB43897}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\VersionIndependentProgID\ = "WYBHO.wybhotool"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\ = "Iwybhotool"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4097f074a964a8b3f16291663d3128a4_JaffaCakes118.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\ = "wybhotool Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4097f074a964a8b3f16291663d3128a4_JaffaCakes118.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\TypeLib\ = "{33B67EF7-9400-48FC-A75F-0351ADB43897}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{33B67EF7-9400-48FC-A75F-0351ADB43897}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\ = "Iwybhotool"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool.1\CLSID\ = "{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WYBHO.wybhotool\CurVer\ = "WYBHO.wybhotool.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{98D7F442-A617-4238-BBC4-AF8AD4F38DCA}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\TypeLib\ = "{33B67EF7-9400-48FC-A75F-0351ADB43897}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4B25C165-EA92-4466-95B1-BE7CC053DAAB}\TypeLib\Version = "1.0"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 3156	1640	regsvr32.exe	83
PID 1640 wrote to memory of 3156	1640	regsvr32.exe	83
PID 1640 wrote to memory of 3156	1640	regsvr32.exe	83

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4097f074a964a8b3f16291663d3128a4_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\4097f074a964a8b3f16291663d3128a4_JaffaCakes118.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:3156

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/3156-0-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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