f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1

General

Target

f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
Size

73KB
MD5

a8a04f828fa3cc7c1472c778aff79adc
SHA1

3109e1189fb66af05db631ba910edd6d5fb9d059
SHA256

f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1
SHA512

7b58e903bdb9e3d02bd0d49213bd0c7a9f2e677d2c408a0a0496d9b4063ce2f821248f6d7c6558fee1be21cfd0174dc27b4c310430fab4d7a531cb95159d1a2d
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOB:RshfSWHHNvoLqNwDDGw02eQmh0HjWOB

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2232	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.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	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.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 created	C:\Windows\SysWOW64\¢«.exe	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
File created	C:\Windows\system\rundll32.exe	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717069095"	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\" %*"	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.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	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717069095"	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
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2232	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
2232	rundll32.exe
2232	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 2232	1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe	28
PID 1152 wrote to memory of 2232	1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe	28
PID 1152 wrote to memory of 2232	1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe	28
PID 1152 wrote to memory of 2232	1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe	28
PID 1152 wrote to memory of 2232	1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe	28
PID 1152 wrote to memory of 2232	1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe	28
PID 1152 wrote to memory of 2232	1152	f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe	28

C:\Users\Admin\AppData\Local\Temp\f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.exe
"C:\Users\Admin\AppData\Local\Temp\f9fd16190c55b9be5c4416c0e65ff62ff1dfe6bc0554d425a9b8e37e601dc7a1.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:1152
- 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:2232

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
77KB

MD5
d1ef0d1b8406de1b866c21d221634e14

SHA1
bb447f1acec3834739a686de1128dda4cdf2c379

SHA256
186bc16056ea083513aabbb3719c5d400666e6e5f7c010239395a8a8cf177bfc

SHA512
af8fc7237cccbff348971bfcf987d4f08eac9e176f7823d94073622041476ed6a67606b83d2ff44e02d5e9aa525e37debcb62ca5e87946629dc82dda8abdbad8

Download Submit
\Windows\system\rundll32.exe

Filesize
84KB

MD5
11c74dbf40049bc69d37bb42e99cd37f

SHA1
378ad7e445e40113fff8f8116bab61037ee913e3

SHA256
d44bf6181fed96672702f61b8271092950c69231e8e721e515ba3936ee33ee34

SHA512
ed95f72bfccbc619845e2d1806b2f7d03b0776ce5bf80bfb39b4a279990e2943ed051a258fc411a387a1b338809e2abd4c7e17116c6473ea2a0623674da86a57

Download Submit
memory/1152-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1152-12-0x0000000000250000-0x0000000000266000-memory.dmp

Filesize
88KB

Download
memory/1152-17-0x0000000000250000-0x0000000000266000-memory.dmp

Filesize
88KB

Download
memory/1152-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1152-22-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2232-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads