d7405d29dd860373dcec2d8790939c29ce45dda291b998fad203ee6385816bce

Analysis

max time kernel
151s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 00:12

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General

Target

7e5f4ed1a109aff31b7ae3a76afd1247.dll
Size

521KB
MD5

7e5f4ed1a109aff31b7ae3a76afd1247
SHA1

8b8012951a78d3be04e6c63bbebab2b1f8152f60
SHA256

d7405d29dd860373dcec2d8790939c29ce45dda291b998fad203ee6385816bce
SHA512

6d044066bd31fa45f9b3c87f12493f11f0e3e16c66207172d59f21c43f3e9f05088fdf44774713d6cae8726b0cdcb5cd87d146d6160a23aaba4cb43bd77b02d8
SSDEEP

384:VtPyZNjtU2mMFHVRQXAK4gGvEv0Mf1P6vmU1z75gikokLPfJLLLLLLLLLLLLLLLY:VlyZBHbKlSFgikD6

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\{24FAE856-AD58-20CB-A025-CD4895FA6E42}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{24FAE856-AD58-20CB-A025-CD4895FA6E42}\ = "pjjxbdwd.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\{24FAE856-AD58-20CB-A025-CD4895FA6E42}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{24FAE856-AD58-20CB-A025-CD4895FA6E42}\InprocServer32\ = "C:\\Windows\\SysWow64\\pjjxbdwd.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{24FAE856-AD58-20CB-A025-CD4895FA6E42}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{24FAE856-AD58-20CB-A025-CD4895FA6E42}\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 4 IoCs

pid	Process
4384	rundll32.exe
4384	rundll32.exe
4384	rundll32.exe
4384	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 4384	224	rundll32.exe	83
PID 224 wrote to memory of 4384	224	rundll32.exe	83
PID 224 wrote to memory of 4384	224	rundll32.exe	83
PID 4384 wrote to memory of 916	4384	rundll32.exe	84
PID 4384 wrote to memory of 916	4384	rundll32.exe	84
PID 4384 wrote to memory of 916	4384	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7e5f4ed1a109aff31b7ae3a76afd1247.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7e5f4ed1a109aff31b7ae3a76afd1247.dll,#1
  2⤵
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4384
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240647328.bat
    3⤵
    PID:916

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\~DFD240647328.bat

Filesize
121B

MD5
09517fc62284f33e877a276463580bd1

SHA1
0b14fe1db4493818f9de0bf2a56ee5370b8d479a

SHA256
6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238

SHA512
1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d

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