123bd5ac25ed381a1d1534a4a4f7818ce5d94a31d1dfbac0b967e6114aac07ba

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17/10/2024, 12:52

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General

Target

$R1.dll
Size

1.6MB
MD5

7b541c6a4638c3098dc8539109d20888
SHA1

a8a9928072fc51bea2b5ad938da0193b19cf90d1
SHA256

270cf871e4515a0bb122dcd7abab911c7939b841ae641f0b6944844aee4cbe50
SHA512

88b069b7a54a709a7060afdebe15b06ca44084ed2839c473714071d654828379f3e1e834c9f3a8d4bbe8dbb56e4ee83380ab2b8ef2834270fe6950fbfc7ddca5
SSDEEP

24576:v4SXK2zKtpTeiCvtIEWmidSxHDernzURAZzVHcs/bL5JyHz8XEdlXIFw93KVMPSH:eUeFkmb4Hj3fPST7uU6KDf

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\{8c0ca834-ef74-cbd1-ed18-6c0cabba3b50}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{8c0ca834-ef74-cbd1-ed18-6c0cabba3b50}\NoExplorer = "0"	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\{8c0ca834-ef74-cbd1-ed18-6c0cabba3b50}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{8c0ca834-ef74-cbd1-ed18-6c0cabba3b50}\ = "chameleontom"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{8c0ca834-ef74-cbd1-ed18-6c0cabba3b50}\InProcServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{8c0ca834-ef74-cbd1-ed18-6c0cabba3b50}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$R1.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{8c0ca834-ef74-cbd1-ed18-6c0cabba3b50}\InProcServer32\ThreadingModel = "Apartment"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2424	2432	regsvr32.exe	28
PID 2432 wrote to memory of 2424	2432	regsvr32.exe	28
PID 2432 wrote to memory of 2424	2432	regsvr32.exe	28
PID 2432 wrote to memory of 2424	2432	regsvr32.exe	28
PID 2432 wrote to memory of 2424	2432	regsvr32.exe	28
PID 2432 wrote to memory of 2424	2432	regsvr32.exe	28
PID 2432 wrote to memory of 2424	2432	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$R1.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$R1.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2424

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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