634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97

General

Target

634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Size

84KB
MD5

5f8f8a3745da64221d702edc2f68909f
SHA1

7b6eda264c737364fb7b19295817f1f2eaf0be43
SHA256

634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97
SHA512

b3c398f2d17ab931c6321e49d539d39420ac4f67a2f6632755941f537b0a94a4a2f8a751e3997903acc757be3d94238d7812962f1a52297a2fba6ff17e8c443f
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOecBHZLcCi:GhfxHNIreQm+HitcBHZLcCi

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3124	rundll32.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.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

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
File created	C:\Windows\SysWOW64\¢«.exe	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
File created	C:\Windows\system\rundll32.exe	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716541394"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716541394"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	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

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3124	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
3124	rundll32.exe
3124	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 3124	3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe	85
PID 3916 wrote to memory of 3124	3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe	85
PID 3916 wrote to memory of 3124	3916	634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe	85

C:\Users\Admin\AppData\Local\Temp\634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.exe
"C:\Users\Admin\AppData\Local\Temp\634c1ff5ab9165343d21b4f8acdd2edddc50aa7cd4b5435e72730528122e5a97.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:3916
- 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:3124

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

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Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
81KB

MD5
9e86f64a7db74afe5c39e52eb90b0b84

SHA1
278513f971466cd966e9d18c6ddda84582e629e5

SHA256
da7bd1f0662ea4225e80e3c177a106bfdbd28c4b1d8686eaece427690f9f53e2

SHA512
2ad0aed451e4f1951bce7db242fa424dd582bdd6abb07220fac07a75331d0a197e8b5f53b7d6d2e367c22c7ad7cc5e8b0d5e73fbcc02cf2f62b2b7f0052706e6

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

Filesize
73KB

MD5
ed3dd4a578e363dee80c977fe18ee3e4

SHA1
25ceff11d78b4c7babf166937f220807935e49cd

SHA256
8e2ddc39cc79e4936ba0c39e5c6826be9fb7e2064362815c1ee8a7ce6a92d98c

SHA512
79b1b71862b0001fb07aee4ff706c437e88388c6e0f37813a02986decb5e5809f3cc3cf96eba71c5f2086567192feb4c1ddb38056440166df0ae88da150c8e6a

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

Filesize
86KB

Download
memory/3916-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads