387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006

General

Target

387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Size

80KB
MD5

1abd664ec92c6e9d5e365a0ade7a9fe5
SHA1

d8b2d1b8866f92839246a8af03d637f83466999d
SHA256

387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006
SHA512

e03cd3cd06ba08870a0a57afafeaae9b563122b7ee40d3c669b4d72a5864bfc3be558dfbfd95013e552fcaf1e4c83bcce42f0b48392ceaac20add3d09dddb987
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWO4t:RshfSWHHNvoLqNwDDGw02eQmh0HjWO4t

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1628	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\" %*"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.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	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
File created	C:\Windows\SysWOW64\¢«.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
File created	C:\Windows\system\rundll32.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1720627719"	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	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	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\" %*"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1720627719"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1628	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
1628	rundll32.exe
1628	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3976 wrote to memory of 1628	3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	86
PID 3976 wrote to memory of 1628	3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	86
PID 3976 wrote to memory of 1628	3976	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	86

C:\Users\Admin\AppData\Local\Temp\387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
"C:\Users\Admin\AppData\Local\Temp\387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.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:3976
- 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:1628

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
17d4799665f0d6deac1c35094709e53f

SHA1
06a7c2cbd72d4fc45e9214a8a585d6eda5fefa46

SHA256
c1963526f59a37e5accc8efd205f21da378f721a50471f7daac6c57f272b68f2

SHA512
f1b131eae73720ae9f6432ea35a1937423e6c0f0feb8dbdb86e7f0a1ae2bde071c02603901a927bdce93203509ba1cf6a6c072ea534ff8ca407ff0ff646d8e96

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

Filesize
73KB

MD5
9f1df7acc1df4375d52bca4c0a0e02f6

SHA1
4097985350176199c29ddc23af17cece924dbf18

SHA256
baf90564be31dc1ea6d64b8cbc3045e78f31ae22815a3419c8828453629cf708

SHA512
c2c10e6eacff568b0492fc503bf98fc700cbb4b96e51dcedc1667f5f690a881f8820e09fe0a0741cd23969893b85037645a20dac8732967dc7fe72192c632d40

Download Submit
memory/3976-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3976-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads