f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c

General

Target

f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
Size

81KB
MD5

69a7c30bfad60ee4931541bacd6a09b3
SHA1

24b245af0654f34a29e0ccfdfd63c73e5e7c5e77
SHA256

f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c
SHA512

b8c8d89f758f723537622d909ab196dfdee9c62ab23a907d55fbcd6ee24fb9a6657b698970acf7ab1bd787f36a15ddc0c8b2be8a40ffb4eb9298128cc019b6dd
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOKJUxXb:GhfxHNIreQm+Hi1JUxXb

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2640	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.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\" %*"	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.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\exefile\shell\open\command	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
File created	C:\Windows\SysWOW64\¢«.exe	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
File created	C:\Windows\system\rundll32.exe	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1721373264"	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
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.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	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.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	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1721373264"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2640	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
2640	rundll32.exe
2640	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 712 wrote to memory of 2640	712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe	30
PID 712 wrote to memory of 2640	712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe	30
PID 712 wrote to memory of 2640	712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe	30
PID 712 wrote to memory of 2640	712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe	30
PID 712 wrote to memory of 2640	712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe	30
PID 712 wrote to memory of 2640	712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe	30
PID 712 wrote to memory of 2640	712	f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe	30

C:\Users\Admin\AppData\Local\Temp\f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.exe
"C:\Users\Admin\AppData\Local\Temp\f6cdb54eaf254208abadf289ddfd5503a19f4b4457e06c0bc6a3ff797c84cb8c.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:712
- 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:2640

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
77KB

MD5
b9bf0168d4b46ff108c200c6f768865a

SHA1
e1280ef604ee8b9eee56dabb40802ca8ff44be1b

SHA256
57301abbf41514563eb566f6209b29debbf7682d451292953fc47cbff31a9d8d

SHA512
2716f491c2962f57ab02ab80714fb0404cb7af78b016f1029f426a601d907a1c9fa455f7f5ff3a4559cd3b3022d039e763381a5ce07ac5855566a835be63762d

Download Submit
\Windows\system\rundll32.exe

Filesize
77KB

MD5
f46dd30f7f61257482402e93f8ffabfe

SHA1
2f59155c6606936dc7bcd26aa3e6cbdd6e0e56be

SHA256
b43d5354a30360ec83e50460a9c1e833d110fa923fbaa9c6c0d9b6d062d33a32

SHA512
adca5c6ae0b19ddb3e5633bf715bf5354d39cb3c199fd77651f740bf0432b7a664ab13fe75a3d7b7e2bc463d6fd9667ca8b3cbca7ab83451df63a72e9fbd8bdb

Download Submit
memory/712-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/712-18-0x0000000000260000-0x0000000000276000-memory.dmp

Filesize
88KB

Download
memory/712-16-0x0000000000260000-0x0000000000276000-memory.dmp

Filesize
88KB

Download
memory/712-21-0x0000000000260000-0x0000000000262000-memory.dmp

Filesize
8KB

Download
memory/712-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads