4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36

General

Target

4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Size

76KB
MD5

17f017755badcc0bc8a7de3923792319
SHA1

aa6960b37af3162df40fe7705ad428f1cbeabb59
SHA256

4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36
SHA512

235ba822042c2763723b14a0767debeb507fe4271ed155d2db7da6f853baaa8c6c783423cb5540083d723579b2a6b60bcfe698fe83790b997242c05bb9420f8f
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOxp1:GhfxHNIreQm+Hiap1

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4580	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	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.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	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
File created	C:\Windows\SysWOW64\¢«.exe	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
File created	C:\Windows\system\rundll32.exe	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1720062735"	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	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1720062735"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4580	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
4580	rundll32.exe
4580	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1020 wrote to memory of 4580	1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe	80
PID 1020 wrote to memory of 4580	1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe	80
PID 1020 wrote to memory of 4580	1020	4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe	80

C:\Users\Admin\AppData\Local\Temp\4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.exe
"C:\Users\Admin\AppData\Local\Temp\4b92b306d0c931907f0591a50325cd241140e47ee5753eda5db7d7884d3c3a36.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:1020
- 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:4580

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
73KB

MD5
93806f0db4ce8f986c2435d1ba47e6b9

SHA1
65ce6b5ce430597d96c1a65e2be96d4bc0a70b35

SHA256
5684e5fddc667aded69d021ac9f1c34fe542c8e16d81c0e91911ada20bad461b

SHA512
91dfda89cb72991ccd0fad6e70480c8e2ffcafbfe67a5a50ea5af51d55cffd15fc93358948b232996f0cc468b64b0d10d5b5319f481c32a8115c3994b22bb761

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

Filesize
81KB

MD5
08dbf42e611dc733f4c4eeedc6ebeaa2

SHA1
42efda4f2d62294efbf47db9275aa66203a4804b

SHA256
c7efbf9c1e40cf5fbe4dec6017dbbd7cde929b4be990311d2d01f8d43abc64f3

SHA512
d255c5521f6ec0005acb09389339733c5a424aa8e8ed2cb675decc10a54dd2eac2ca087cb21eb45f1720dd3daa46cc9d56f5a3590e995c1654328b5f4f7aed96

Download Submit
memory/1020-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1020-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4580-12-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads