5536e6d0078e9565abf8641a6bb249f09edd1ec9ab98ca15575cced7f7d4e270

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 15:50

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General

Target

3a5c1a3aca4a7a2d2b86ccf075315ef5.dll
Size

86KB
MD5

3a5c1a3aca4a7a2d2b86ccf075315ef5
SHA1

672c53f3ff8b282cecfd994203dec710781a1999
SHA256

5536e6d0078e9565abf8641a6bb249f09edd1ec9ab98ca15575cced7f7d4e270
SHA512

d9d80942fab74827bc29e8fefcdb0157a8affdcccd2d919c2c13264a5b8ba3841e8b1539caea8339828955ed73516267c941619721d793bb8d19cd68f645c578
SSDEEP

1536:zYvynn+A2VjSCRZO0kmFrEqZRnsYHTgSJg4DflM7Iuc46xNb08T0Qz:Uv4+Ay00Hp5RnshqxM0346xRB

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 1 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\{58E00678-F568-46A8-9ED5-F8BDA4B7161B}	regsvr32.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{58E00678-F568-46A8-9ED5-F8BDA4B7161B}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{58E00678-F568-46A8-9ED5-F8BDA4B7161B}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{58E00678-F568-46A8-9ED5-F8BDA4B7161B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a5c1a3aca4a7a2d2b86ccf075315ef5.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{58E00678-F568-46A8-9ED5-F8BDA4B7161B}\InprocServer32\ThreadingModel = "apartment"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2308	3028	regsvr32.exe	14
PID 3028 wrote to memory of 2308	3028	regsvr32.exe	14
PID 3028 wrote to memory of 2308	3028	regsvr32.exe	14
PID 3028 wrote to memory of 2308	3028	regsvr32.exe	14
PID 3028 wrote to memory of 2308	3028	regsvr32.exe	14
PID 3028 wrote to memory of 2308	3028	regsvr32.exe	14
PID 3028 wrote to memory of 2308	3028	regsvr32.exe	14

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\3a5c1a3aca4a7a2d2b86ccf075315ef5.dll
1⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2308

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a5c1a3aca4a7a2d2b86ccf075315ef5.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3028

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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