26330a4f4de2331d13e83012d5c9148266673e102a9e5f30e6ce34e785791954

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 04:08

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General

Target
dd3208aca83f3eb9d6df3926f3ab7fea.dll
Size 524KB
Sample240325-eqpgcsfg46
SHA256 26330a4f4de2331d13e83012d5c9148266673e102a9e5f30e6ce34e785791954
MD5 dd3208aca83f3eb9d6df3926f3ab7fea
SHA1 0a72db5c6599935dd6bc54ffa0d10e8070c251d0
SHA512 80955e01e520d0f903aef12e19bc9623559de030616b3eed1fc17583f476ed2fc1e5adf471392fb545ed74a64a9071fa94ad3ff5a02ebc666a3c984434a2a92d
SSDEEP 384:HOr5NKZ2Vx6wP9uSI6igLteFzyk7B1hhb+ykTQhwi/80nj8paatzdxAlYYkDEn:ur5ZHI6NLteFWmhb+yk8nj8MahdxsO
MD5 SHA1 SHA512 SSDEEP

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\{4FD45A54-9875-698F-E56E-65102358FDF4}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4FD45A54-9875-698F-E56E-65102358FDF4}\ = "apsgdjba.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\{4FD45A54-9875-698F-E56E-65102358FDF4}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4FD45A54-9875-698F-E56E-65102358FDF4}\InprocServer32\ = "C:\\Windows\\SysWow64\\apsgdjba.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4FD45A54-9875-698F-E56E-65102358FDF4}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4FD45A54-9875-698F-E56E-65102358FDF4}\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
888	rundll32.exe
888	rundll32.exe
888	rundll32.exe
888	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	888	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2776 wrote to memory of 888	2776	rundll32.exe	87
PID 2776 wrote to memory of 888	2776	rundll32.exe	87
PID 2776 wrote to memory of 888	2776	rundll32.exe	87
PID 888 wrote to memory of 4248	888	rundll32.exe	88
PID 888 wrote to memory of 4248	888	rundll32.exe	88
PID 888 wrote to memory of 4248	888	rundll32.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dd3208aca83f3eb9d6df3926f3ab7fea.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2776
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\dd3208aca83f3eb9d6df3926f3ab7fea.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:888
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240616453.bat
    3⤵
    PID:4248

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

~DFD240616453.bat

Path C:\Users\Admin\AppData\Local\Temp\~DFD240616453.bat
Size 121B
SHA256 6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238
MD5 09517fc62284f33e877a276463580bd1
SHA1 0b14fe1db4493818f9de0bf2a56ee5370b8d479a
SHA512 1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d
MD5 SHA1 SHA512

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