a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60

General

Target

a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Size

74KB
MD5

c5a1c0357b26a0d2a84ec25800a049f9
SHA1

67309e70dd80a7f94b75237b1edb56984aa6f039
SHA256

a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60
SHA512

288bf60bdebedb81592b70b8c5569b4c32f4f0fe1e0d34952e902deb7032cb9c0f6d355a5455125069a22a1e2fd59c42af10675405a98831c62675650bb8d1af
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWObWy:GhfxHNIreQm+Hi9y

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4140	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	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
File created	C:\Windows\SysWOW64\¢«.exe	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
File created	C:\Windows\system\rundll32.exe	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697151786"	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697151786"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\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\exefile\shell\open\command\ = "\"%1\" %*"	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4140	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
4140	rundll32.exe
4140	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 4140	2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe	86
PID 2788 wrote to memory of 4140	2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe	86
PID 2788 wrote to memory of 4140	2788	a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe	86

C:\Users\Admin\AppData\Local\Temp\a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.exe
"C:\Users\Admin\AppData\Local\Temp\a687a15677a786025943363a9665205b6dc22dd3376958728c1063076fe4bf60.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:2788
- 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:4140

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
80KB

MD5
a2f2f76915c7baa26be20e293b47330f

SHA1
4e84c6dcd0fc2c5c8c3f5dacf7e70fe25edd5c0a

SHA256
fc505995dbaed713ac5af5f5fb84649db5fa9d10338fed1ddabbe7c4559f5d3f

SHA512
31c409d9e715624e3e1e6ec98d26bae964a79e59285b17fdbe603367171e82873556628bca1b02cf57612420a6f0526a06e527c5a7b3aac64181490ea546d7e8

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

Filesize
75KB

MD5
f46a3ab4ce4c9faa9c851b29ecc8df87

SHA1
3f4b618609b41c7efffa7121974f74756b44001e

SHA256
7cebbd1c7be03d71ad0dd3e176babecc8d8880fddd50ffef8574b143c8103874

SHA512
860bd1bb9d0f2e8cf6d1c97d32bf18b5bb1e8e6788f6ae863d4f9134725f69f7c3d83cf8194f685212b0c1679a69a5fe5fb4a899bbf643457b83c8abad277008

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

Filesize
75KB

MD5
f46a3ab4ce4c9faa9c851b29ecc8df87

SHA1
3f4b618609b41c7efffa7121974f74756b44001e

SHA256
7cebbd1c7be03d71ad0dd3e176babecc8d8880fddd50ffef8574b143c8103874

SHA512
860bd1bb9d0f2e8cf6d1c97d32bf18b5bb1e8e6788f6ae863d4f9134725f69f7c3d83cf8194f685212b0c1679a69a5fe5fb4a899bbf643457b83c8abad277008

Download Submit
memory/2788-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2788-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4140-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads