965493da13ac71e9c96dad60392f3ecd146ffaf91da27abaa30bceef315a602d

Analysis

max time kernel
157s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 08:04

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General

Target

c81e59a0274713727acb140326025b12.dll
Size

525KB
MD5

c81e59a0274713727acb140326025b12
SHA1

791b3a9ddf3879a3f40c612ab23d4b7d2b49918d
SHA256

965493da13ac71e9c96dad60392f3ecd146ffaf91da27abaa30bceef315a602d
SHA512

75b19d656fe6030e57bdcb8fb590587c58317b7953313e02cc218a06ddbcd512357347bbc5d7058eaa81f1444bb8586338d0e1c648052a95afb0fec60dbc8395
SSDEEP

384:LSdD9d6Go7aC9pf09rH65DP90yd9RMrcNJtCL6Nv+gBquNSzisqfkNKLf1Q:ekj7M6FP996rozCWNv1cuNS3qfkke

Score

6^/10

adware 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\{55694105-5108-9405-3695-954187462155}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{55694105-5108-9405-3695-954187462155}\ = "mpwdeapi.dll"	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\verclsid.exe	rundll32.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55694105-5108-9405-3695-954187462155}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55694105-5108-9405-3695-954187462155}\InprocServer32\ = "C:\\Windows\\SysWow64\\mpwdeapi.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55694105-5108-9405-3695-954187462155}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{55694105-5108-9405-3695-954187462155}\InprocServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3176	rundll32.exe
3176	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3176	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3384 wrote to memory of 3176	3384	rundll32.exe	87
PID 3384 wrote to memory of 3176	3384	rundll32.exe	87
PID 3384 wrote to memory of 3176	3384	rundll32.exe	87
PID 3176 wrote to memory of 4260	3176	rundll32.exe	88
PID 3176 wrote to memory of 4260	3176	rundll32.exe	88
PID 3176 wrote to memory of 4260	3176	rundll32.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c81e59a0274713727acb140326025b12.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3384
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c81e59a0274713727acb140326025b12.dll,#1
  2⤵
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3176
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240629015.bat
    3⤵
    PID:4260

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\~DFD240629015.bat

Filesize
121B

MD5
09517fc62284f33e877a276463580bd1

SHA1
0b14fe1db4493818f9de0bf2a56ee5370b8d479a

SHA256
6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238

SHA512
1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d

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