f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d

General

Target

f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
Size

74KB
MD5

707df4903d9ee8bcefc445fd6d89014b
SHA1

48c1a378b49f9de57fda1e0e9d99e5eb89d8f0b7
SHA256

f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d
SHA512

fa159a8fc768f96701c9655cec3df202dd57729ec098f7bda3205f12f0bfdf1a7530d6495756405da130df19638da89fb3793c75be36ece86fcaa7b892ae2376
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWO/T:RshfSWHHNvoLqNwDDGw02eQmh0HjWO/T

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3828	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\" %*"	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.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	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
File created	C:\Windows\SysWOW64\¢«.exe	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
File created	C:\Windows\system\rundll32.exe	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe

Modifies registry class 15 IoCs

description	ioc	Process
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\" %*"	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.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\" %*"	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717540175"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717540175"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3828	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
3828	rundll32.exe
3828	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2900 wrote to memory of 3828	2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe	86
PID 2900 wrote to memory of 3828	2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe	86
PID 2900 wrote to memory of 3828	2900	f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe	86

C:\Users\Admin\AppData\Local\Temp\f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.exe
"C:\Users\Admin\AppData\Local\Temp\f6f8cdd1a6b6fef0f8ae27bcbbd15053f7b9d65d767bbaf59734622518b2395d.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:2900
- 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:3828

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
76KB

MD5
2396cf35a049d083a3fadd6e9af806b9

SHA1
4ac5c2973b7fedfa4d78b3af50c7f1155bc518a5

SHA256
a4e257a60bec0b695d3f8f988f8cb3cd37f3b8772476e66002fdea4b3c6ed345

SHA512
3735f3f3b1a1680331e0d7e010b1173a202c518e5822a0db9c43e69a77d60e3ebebd31699437747c3b743b20ace833fe4864a45c4bf3441cd68672a2372996ba

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

Filesize
82KB

MD5
aa2e66ec10d86f67519277a2b70ef1bb

SHA1
85b1af0bec585bce1af6c59c3a2cdd31a6865abd

SHA256
78cef7560b151a8964141b903e2118af16448201640de0adddb2c88404c25047

SHA512
b812dc8700bbe2f66db1e2916f42d523fdde21cb4d28719868254749b52039ad394b86946a743b0066f55c77496358f1474a99988115c0cfff253eaf19f85c8b

Download Submit
memory/2900-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2900-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads