6efca043c7531bafe636c44853718280b45e84c978b52104ca58fcf22aa97779

Analysis

max time kernel
149s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
25/09/2026, 23:35

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General

Target
jaffacakes118_6efca043c7531bafe636c44853718280b45e84c978b52104ca58fcf22aa97779.dll
Size 4.6MB
Sample260925-3lctrsyhpb
SHA256 6efca043c7531bafe636c44853718280b45e84c978b52104ca58fcf22aa97779
MD5 94ec2b9ef4b96edaea05bc3705c45bf5
SHA1 fff0275de29439a2fe9a4d1c53cc19bd90621868
SHA512 c15a3c00452ea18573a48c49c479de6bee1f8dd6fb37f6eba56c2eb61a4d8fcd5c731442f5471f9c3143abf81743e1b9b210f932b062d20859ae8b4eddd07aee
SSDEEP 49152:4ax9Z1DPZt2HyYT6vfPCKTUo4LHHHO666:4u9+UPC5LHHHO666
TLSH
T1B936BF15B692F472D1522A784C9BA6C99D3ABA035D38DC8B36EC0F4C1F34B923D19397
MD5 SHA1 SHA512 SSDEEP TLSH

Score

6^/10

adware discovery stealer

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\{E2D7B1FB-420C-4AE1-86CD-87376C77942D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{E2D7B1FB-420C-4AE1-86CD-87376C77942D}\ = "MSIME.Japan.JpnReaderDS.15"	regsvr32.exe

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 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E2D7B1FB-420C-4AE1-86CD-87376C77942D}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E2D7B1FB-420C-4AE1-86CD-87376C77942D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\jaffacakes118_6efca043c7531bafe636c44853718280b45e84c978b52104ca58fcf22aa97779.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E2D7B1FB-420C-4AE1-86CD-87376C77942D}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E2D7B1FB-420C-4AE1-86CD-87376C77942D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E2D7B1FB-420C-4AE1-86CD-87376C77942D}\	regsvr32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 4620	636	regsvr32.exe	85

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\jaffacakes118_6efca043c7531bafe636c44853718280b45e84c978b52104ca58fcf22aa97779.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:636
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\jaffacakes118_6efca043c7531bafe636c44853718280b45e84c978b52104ca58fcf22aa97779.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:4620

Network

MITRE ATT&CK Enterprise v16

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/4620-0-0x00000000023B0000-0x00000000031E9000-memory.dmp

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memory/4620-1-0x0000000002E89000-0x0000000002E8A000-memory.dmp

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memory/4620-2-0x00000000023B0000-0x00000000031E9000-memory.dmp

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memory/4620-3-0x00000000023B0000-0x00000000031E9000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads