dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805

General

Target

dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
Size

73KB
MD5

c4575ea177ad3dccc828bda8ecc08859
SHA1

7fc9539f1098cc2b9aa6f7627aa6e3de385a5750
SHA256

dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805
SHA512

f752ed54de3613a6e3b079e8331a7bfc094bd49fcac12d3255d5175f3d889c3aad954fa04cc320d74c77ad08a7ea4d4a2f68a60e19c72d55d93daf4e73e781ad
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOy:RshfSWHHNvoLqNwDDGw02eQmh0HjWOy

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3916	rundll32.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
File created	C:\Windows\SysWOW64\¢«.exe	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
File created	C:\Windows\system\rundll32.exe	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697066723"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697066723"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3916	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
3916	rundll32.exe
3916	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4876 wrote to memory of 3916	4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe	83
PID 4876 wrote to memory of 3916	4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe	83
PID 4876 wrote to memory of 3916	4876	dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe	83

C:\Users\Admin\AppData\Local\Temp\dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe
"C:\Users\Admin\AppData\Local\Temp\dec84f328210e465a4ab4c9ff6939ead2c16041642df0be6b95f0c5304dde805.exe"
1⤵
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4876
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:3916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
73KB

MD5
13866990db4db6621015d4b594f536b5

SHA1
e7951c31d1a86913e343c727ea2d89f3aa47c016

SHA256
6f70b6bcf934f5a1841ab07dc80b035ff613fdd533a0e684608e4e82b0e5d6ea

SHA512
ad895d925aca097ba46a075cfea4efb74cce76c6c6747ab9642dfb20da9435fcb50970c82896d4c6d35fe017b9a472d92bc4231c13b49ce15fd7099008cb7330

Download Submit
C:\Windows\System\rundll32.exe

Filesize
73KB

MD5
2a7a6fd4165232fa2fab88f6e570c95f

SHA1
542a562aee2902752196bff5f2037e403b89c38c

SHA256
4d713fdc4363d6d6bc77f93d1f8f9f126b920dd7865855eeea0bf8d7b374c1f8

SHA512
ee18cad5fe28479f70e9e888b11597034f11efc187af9537d9adba4c02b35c6d282b5901fc954faef5f3c1c811f781d7c7de97b7c9d64452fce0e7a4133438b2

Download Submit
C:\Windows\system\rundll32.exe

Filesize
73KB

MD5
2a7a6fd4165232fa2fab88f6e570c95f

SHA1
542a562aee2902752196bff5f2037e403b89c38c

SHA256
4d713fdc4363d6d6bc77f93d1f8f9f126b920dd7865855eeea0bf8d7b374c1f8

SHA512
ee18cad5fe28479f70e9e888b11597034f11efc187af9537d9adba4c02b35c6d282b5901fc954faef5f3c1c811f781d7c7de97b7c9d64452fce0e7a4133438b2

Download Submit
memory/3916-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4876-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4876-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads