23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d

General

Target

23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
Size

82KB
MD5

40e0a772bc2eb44acb5663f9094c8f3d
SHA1

67ffa2a2dc0ce31349db69288fb507581218ab46
SHA256

23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d
SHA512

966b4674b31f0b8e86ea8fc5ced01276db70d98349ec657e8ab10a3eb65fc2b46246d51790778e0fdeda8b143fe60bf95b393012b9b8856488cf5d277aaf2b71
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOGcWpd:GhfxHNIreQm+HilcWpd

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1216	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.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	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.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	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
File created	C:\Windows\SysWOW64\¢«.exe	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
File created	C:\Windows\system\rundll32.exe	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.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\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\txtfile\shell\open\command\ = "notepad.exe %1"	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717990690"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717990690"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1216	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
1216	rundll32.exe
1216	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 1216	1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe	28
PID 1992 wrote to memory of 1216	1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe	28
PID 1992 wrote to memory of 1216	1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe	28
PID 1992 wrote to memory of 1216	1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe	28
PID 1992 wrote to memory of 1216	1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe	28
PID 1992 wrote to memory of 1216	1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe	28
PID 1992 wrote to memory of 1216	1992	23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe	28

C:\Users\Admin\AppData\Local\Temp\23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.exe
"C:\Users\Admin\AppData\Local\Temp\23cbbbb8526f67de37a25f98dabcc16363ae9357dbf3f7a0d50be56636ce1f2d.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:1992
- 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:1216

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
80KB

MD5
2a19e0e7b97b929eaaa071c376c4712d

SHA1
f7abd750429214d96669e9058290bba0d5e67003

SHA256
4a596db8efd1f28b9a698ebc3d832ffb20725c33d179a816a7415f866e155393

SHA512
4a0378d30b7a3baa0cb85f0ccb3b851ec033a90f679a8f8cb76fb4a2b4106b5c2f17d9205185aede5735ba5108594f28be3f5a059d1c087cae4d3155432f480a

Download Submit
\Windows\system\rundll32.exe

Filesize
75KB

MD5
483c0e840365af211ac3788304f4d2b8

SHA1
e97624193c48ca7289adcee9cef790ef39631b7a

SHA256
5c5b6220461cab3a60f8ce6ed58f43c5d86df3e01d89031696f2a83da9cca1c3

SHA512
70dbaea8556a9c84ff362e0f9fb8ba817ad08ef7feee4b52415957c4cf32b6a3a35979f3ee12101fa22ca637293bdaad79bc1ad55b35f8e1b1441ef56676a67a

Download Submit
memory/1992-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1992-17-0x00000000001F0000-0x0000000000206000-memory.dmp

Filesize
88KB

Download
memory/1992-16-0x00000000001F0000-0x0000000000206000-memory.dmp

Filesize
88KB

Download
memory/1992-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1992-21-0x00000000001F0000-0x00000000001F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads