6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d

General

Target

6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
Size

82KB
MD5

56db25d447bfeda4f2017dc218a2f29d
SHA1

1d2ce5633fdca0e5c644d987a4a8450f6ec008cb
SHA256

6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d
SHA512

7a6ce57488596b0060255207d9b410ec8f574eaaa034cde0f28f1ebd29d94dd4ee3b722168aca77ef195351a9023c02a936afe8f89722ee321f899e23059247b
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOFGg:GhfxHNIreQm+Hi0Gg

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4772	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	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.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	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
File created	C:\Windows\SysWOW64\¢«.exe	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
File created	C:\Windows\system\rundll32.exe	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.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"	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.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\MSipv	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1693001435"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1693001435"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4772	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
4772	rundll32.exe
4772	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 600 wrote to memory of 4772	600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe	83
PID 600 wrote to memory of 4772	600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe	83
PID 600 wrote to memory of 4772	600	6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe	83

C:\Users\Admin\AppData\Local\Temp\6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.exe
"C:\Users\Admin\AppData\Local\Temp\6fb6d9cd9bc39abbb30ffcae63ab9816fa3e9ce0aba4940f9736c71a46a7629d.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:600
- 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:4772

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

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
73KB

MD5
d8cddc07f29e9db812a1a5fbabf8af1c

SHA1
181cf3b3cedaad50f088b71d82482417fbf7a394

SHA256
bb76282c8abcc88e9e000141697734038399a058c1dc28f2522200633b686087

SHA512
5b3f2d1080306adab7bc388e24d899b85ef1eb47232f1c94ee30848aa09dbe1f71dd8877c2d06c803959d324f7bfd9bba07ee5413d6b5e7554e091ad41347782

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

Filesize
79KB

MD5
6358ea38238c96af21fb7c7bee8a1f31

SHA1
2f9e5accf7d724df92c7ae77d4c1163b01acf339

SHA256
88cfa4193cf08283c2a77aef997d1a337b95890113b74ad2c99a22948022481b

SHA512
9c1ff11ff39757fd4a92e1094625854697f9952a3ab0587e32ad3de3f763ce432db39cca74585eabeabc38eeb64feb8ea37752b573078ffe3bad60e6c98850ea

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

Filesize
79KB

MD5
6358ea38238c96af21fb7c7bee8a1f31

SHA1
2f9e5accf7d724df92c7ae77d4c1163b01acf339

SHA256
88cfa4193cf08283c2a77aef997d1a337b95890113b74ad2c99a22948022481b

SHA512
9c1ff11ff39757fd4a92e1094625854697f9952a3ab0587e32ad3de3f763ce432db39cca74585eabeabc38eeb64feb8ea37752b573078ffe3bad60e6c98850ea

Download Submit
memory/600-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/600-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4772-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads