667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626

General

Target

667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
Size

78KB
MD5

b3de9396afc76aba1b3a848268d51ea5
SHA1

742eb5b6dd49db180f45c60b763834631bd5176c
SHA256

667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626
SHA512

b285bdf6d6190ddc86a78e78a0b81558bfac2725e16fffd767ad0ea72f3c81630c6bff0154b8fe8b044d0014a248ca891ac3ddcc90790ca3caac5b4d9d11ff38
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOUj:RshfSWHHNvoLqNwDDGw02eQmh0HjWOq

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2664	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.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	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	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
File created	C:\Windows\SysWOW64\¢«.exe	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
File created	C:\Windows\system\rundll32.exe	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.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"	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697554518"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697554518"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.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	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2664	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
2664	rundll32.exe
2664	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 2664	2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe	28
PID 2880 wrote to memory of 2664	2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe	28
PID 2880 wrote to memory of 2664	2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe	28
PID 2880 wrote to memory of 2664	2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe	28
PID 2880 wrote to memory of 2664	2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe	28
PID 2880 wrote to memory of 2664	2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe	28
PID 2880 wrote to memory of 2664	2880	667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe	28

C:\Users\Admin\AppData\Local\Temp\667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe
"C:\Users\Admin\AppData\Local\Temp\667141fd61489bade500be627893096cbb06282deec397f36818f497f9421626.exe"
1⤵
- Loads dropped DLL
- 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:2880
- 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:2664

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
79KB

MD5
fb1619740adf91059631cbf59f861744

SHA1
96c90ea8246e624ddf54463959b1c0d2e3dd5869

SHA256
4ca43e94f1bac0572efb062898a01a45fd1ccd7de5ce52665d64571fb2e0dd07

SHA512
2806becb75bf93ff5c7c8629a52a71d36e929b166483dc7209b126a24d06e52dd234e48e84a65f70c76fe31d2c2dfe1c9669abbecd9c806d744e38f0a0e52b8c

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

Filesize
76KB

MD5
ef1e44c323148a71e77d8a2d0c889102

SHA1
aedaa8919d1fa60432e2986f0978b15df5713738

SHA256
705329a148794f362dbf32a957e1fe6ed07fd1c81e0843c8c6e77bb47a785526

SHA512
7a03f2e140744d0c9f3782f67bb5f45939ef4d723af5e1307cd0ceeda6f610a08a24583f844ba2bc55075a9e24f5f92db5ddcd89a40cef496f7367e4cfdc8f6e

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

Filesize
76KB

MD5
ef1e44c323148a71e77d8a2d0c889102

SHA1
aedaa8919d1fa60432e2986f0978b15df5713738

SHA256
705329a148794f362dbf32a957e1fe6ed07fd1c81e0843c8c6e77bb47a785526

SHA512
7a03f2e140744d0c9f3782f67bb5f45939ef4d723af5e1307cd0ceeda6f610a08a24583f844ba2bc55075a9e24f5f92db5ddcd89a40cef496f7367e4cfdc8f6e

Download Submit
\Windows\system\rundll32.exe

Filesize
76KB

MD5
ef1e44c323148a71e77d8a2d0c889102

SHA1
aedaa8919d1fa60432e2986f0978b15df5713738

SHA256
705329a148794f362dbf32a957e1fe6ed07fd1c81e0843c8c6e77bb47a785526

SHA512
7a03f2e140744d0c9f3782f67bb5f45939ef4d723af5e1307cd0ceeda6f610a08a24583f844ba2bc55075a9e24f5f92db5ddcd89a40cef496f7367e4cfdc8f6e

Download Submit
\Windows\system\rundll32.exe

Filesize
76KB

MD5
ef1e44c323148a71e77d8a2d0c889102

SHA1
aedaa8919d1fa60432e2986f0978b15df5713738

SHA256
705329a148794f362dbf32a957e1fe6ed07fd1c81e0843c8c6e77bb47a785526

SHA512
7a03f2e140744d0c9f3782f67bb5f45939ef4d723af5e1307cd0ceeda6f610a08a24583f844ba2bc55075a9e24f5f92db5ddcd89a40cef496f7367e4cfdc8f6e

Download Submit
memory/2664-18-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2664-22-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2880-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2880-12-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/2880-21-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2880-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads