c81a29252c15461ac2e4ba94ed321f175fd682ebd780dd9e17f208a019a33896

Analysis

max time kernel
140s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04/05/2024, 02:52

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General

Target
c81a29252c15461ac2e4ba94ed321f175fd682ebd780dd9e17f208a019a33896.dll
Size 345KB
Sample240504-dc4hpabd5w
SHA256 c81a29252c15461ac2e4ba94ed321f175fd682ebd780dd9e17f208a019a33896
MD5 2ec5020fa8c2f49266e3b425b3a3b346
SHA1 1c68b1159d570f5b319eec464f9eccf33540167f
SHA512 973677a9ab12a1a07066f482f15065ae26aa3e70241bab741d8c8785773424f2f41be3caa2d15c43198b5d02acaf1ae95a277346d62f293b6a5f9f27e6c689d5
SSDEEP 6144:f67bocez+5No0CvrpydxCHBFGk2j4r7JT65JeX8jwDVA:8bocez+XcvrsOBVA
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

adware persistence stealer

Malware Config

Signatures

Modifies Shared Task Scheduler registry keys 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler\{06E5C3A1-18F6-C3A1-E4C3-7E5C4A29F7E5}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler	rundll32.exe

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\{A08F6D4C-B291-6D4C-8E6D-18F7E4C3918F}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{A08F6D4C-B291-6D4C-8E6D-18F7E4C3918F}\	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\IUSPMZ.dll	rundll32.exe
File created	C:\Windows\SysWOW64\COMJGT.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\COMJGT.dll	rundll32.exe
File created	C:\Windows\SysWOW64\IUSPMZ.dll	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 3 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Software\Microsoft\Internet Explorer\New Windows\Allow	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\New Windows\Allow\www.	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Internet Explorer\New Windows\Allow\www.google.cn	rundll32.exe

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A08F6D4C-B291-6D4C-8E6D-18F7E4C3918F}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A08F6D4C-B291-6D4C-8E6D-18F7E4C3918F}\InprocServer32\ = "C:\\Windows\\SysWow64\\COMJGT.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A08F6D4C-B291-6D4C-8E6D-18F7E4C3918F}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{06E5C3A1-18F6-C3A1-E4C3-7E5C4A29F7E5}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A08F6D4C-B291-6D4C-8E6D-18F7E4C3918F}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A08F6D4C-B291-6D4C-8E6D-18F7E4C3918F}\InprocServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{06E5C3A1-18F6-C3A1-E4C3-7E5C4A29F7E5}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{06E5C3A1-18F6-C3A1-E4C3-7E5C4A29F7E5}\	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{06E5C3A1-18F6-C3A1-E4C3-7E5C4A29F7E5}\InprocServer32\ = "C:\\Windows\\SysWow64\\IUSPMZ.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{06E5C3A1-18F6-C3A1-E4C3-7E5C4A29F7E5}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4660 wrote to memory of 812	4660	rundll32.exe	85
PID 4660 wrote to memory of 812	4660	rundll32.exe	85
PID 4660 wrote to memory of 812	4660	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c81a29252c15461ac2e4ba94ed321f175fd682ebd780dd9e17f208a019a33896.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c81a29252c15461ac2e4ba94ed321f175fd682ebd780dd9e17f208a019a33896.dll,#1
  2⤵
  - Modifies Shared Task Scheduler registry keys
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Browser Extensions

T1176

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

COMJGT.dll

Path C:\Windows\SysWOW64\COMJGT.dll
Size 345KB
SHA256 c0f6279e50edd5bef820bff03217d73af18a8156852389c38e090b387bc23352
MD5 9258b002a3af380d25df5c0680b5d681
SHA1 7f5aa4b7d839ced181a16827ea2f6aa6d66dcab5
SHA512 04c3dc01004a7da4212c03a98cfa576998cca96fbb3032669a93674bfe78832fb44a15d0b9d998151dd68c9adac698b30d071a863ccb68dc1b7d7879d2fa6b95
SSDEEP 6144:f67bocez+5No0CvrpydxCHBFGk2j4r7JT65JeX8jwDV/:8bocez+XcvrsOBV/
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/812-17-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-20-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-12-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-13-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-14-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-15-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-11-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-18-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-16-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-19-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-0-0x0000000076FE4000-0x0000000076FE5000-memory.dmp

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memory/812-21-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-22-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-23-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/812-24-0x0000000000400000-0x000000000045E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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