131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c

General

Target

131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
Size

82KB
MD5

cb3e9ac089012bb811edc08abce1e35f
SHA1

c2f414df59586e332fd17f6f7e54cdf4e03aad6b
SHA256

131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c
SHA512

d65a49bc6bd7a92df1628d061c86433b76344000cbd1e511a02e0570de19cb7f824d94be10ea82b6a1ef0666c1a983bf1180e98d9a5443e062e83e767b170c22
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWO5a6M:GhfxHNIreQm+HiKa6M

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4780	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	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.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\notepad¢¬.exe	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
File created	C:\Windows\SysWOW64\¢«.exe	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
File created	C:\Windows\system\rundll32.exe	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718307776"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.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	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718307776"	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
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4780	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
4780	rundll32.exe
4780	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3716 wrote to memory of 4780	3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe	85
PID 3716 wrote to memory of 4780	3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe	85
PID 3716 wrote to memory of 4780	3716	131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe	85

C:\Users\Admin\AppData\Local\Temp\131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.exe
"C:\Users\Admin\AppData\Local\Temp\131737354fa9851c749328facb863eecd106cc0f8ca2841c05e6a0c9a468d80c.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:3716
- 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:4780

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
78KB

MD5
02a2764f20a147a250d1cad01e35792f

SHA1
858482ab666e2d21d26e4445f940f845b2946e37

SHA256
8619916157f8d1b870e4acc22ab17772b156e69dc1a636adb72fd3d5536d8def

SHA512
2e27b17426d65c0d133f53faab4261e9a7abe815a46240c8c65e1e225e35d89a6a6820cbaf594e71a4afd3c3de2d471582f2621db15d49363bd8ba77b26dd5e9

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

Filesize
81KB

MD5
cbda941fca575f4ee0eb1e45101574ba

SHA1
98cc068dfc49f5f6143458225d504c270272603b

SHA256
17bd8c990370a20b7da8b1ca4cbb174a666bd1b9aab4ab00f7752127080e0924

SHA512
e534c56171bc0b6aa47d6ca929d4a06850fc775b44b7796c903cfd2a9d0f6846c25de200cd639cd742a47e9d249f6b40358f03a2959b56e51c1bd4ebdcb18c0d

Download Submit
memory/3716-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3716-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads