1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752

General

Target

1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Size

81KB
MD5

76544919796349b8bf6087361c17cc85
SHA1

c80a938312adbbbc6836b98954d95e8de8e974e8
SHA256

1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752
SHA512

924870c44060952ffc416ab339b2def494e174c8c21cc81e92399b357365c3638abf1bfd59e294f3d0f93baa4cec69c9c20a216ebf9ca99c4539b72355a3264d
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOzLH5qR:GhfxHNIreQm+HiALH5qR

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4360	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\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\¢«.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
File created	C:\Windows\system\rundll32.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697596907"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697596907"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	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

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4360	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
4360	rundll32.exe
4360	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 4360	3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	83
PID 3156 wrote to memory of 4360	3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	83
PID 3156 wrote to memory of 4360	3156	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	83

C:\Users\Admin\AppData\Local\Temp\1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
"C:\Users\Admin\AppData\Local\Temp\1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.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:3156
- 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:4360

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
79KB

MD5
6b334c0b9e3d44136e8edd6803188469

SHA1
074bd0597442e0d7ce4b8ff00ae5b5b85e6f1c7e

SHA256
11a3e50706b3e2a8ca4b6bda9f81832923823eecceca7f7ce9fddfa5a8fe3be0

SHA512
188dd82aa0b00c9b239edd72b44a99075bd722a303a35ed8d9fc327c5bff7329c7de846d1c4e9b0b3654fab4fe917dbed678e04a5a11a7700feba323c1950c1b

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

Filesize
82KB

MD5
255becaecd42b58726986d9f2c5485b9

SHA1
38ac1be6e53aa86b56317d93733241cafd4a82f7

SHA256
9907453d145c0aebb7bf0b06b3b624c4b2775f5bdc81acb60273aed9a67ba76c

SHA512
36ba04d66f60be841aa6b0cafb2b9aa7758ee583521c6eb4e675e22f2e1a66735844ff316a9620ff94d5ea6faafd6468ee99eaf048e1a0de458ca8719863e8c1

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

Filesize
82KB

MD5
255becaecd42b58726986d9f2c5485b9

SHA1
38ac1be6e53aa86b56317d93733241cafd4a82f7

SHA256
9907453d145c0aebb7bf0b06b3b624c4b2775f5bdc81acb60273aed9a67ba76c

SHA512
36ba04d66f60be841aa6b0cafb2b9aa7758ee583521c6eb4e675e22f2e1a66735844ff316a9620ff94d5ea6faafd6468ee99eaf048e1a0de458ca8719863e8c1

Download Submit
memory/3156-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3156-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4360-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads