1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752

General

Target

1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Size

81KB
MD5

76544919796349b8bf6087361c17cc85
SHA1

c80a938312adbbbc6836b98954d95e8de8e974e8
SHA256

1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752
SHA512

924870c44060952ffc416ab339b2def494e174c8c21cc81e92399b357365c3638abf1bfd59e294f3d0f93baa4cec69c9c20a216ebf9ca99c4539b72355a3264d
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOzLH5qR:GhfxHNIreQm+HiALH5qR

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2192	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.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	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.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 opened for modification	C:\Windows\SysWOW64\¢«.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
File created	C:\Windows\SysWOW64\¢«.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
File created	C:\Windows\system\rundll32.exe	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.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\" %*"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697596918"	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\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697596918"	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

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2192	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
2192	rundll32.exe
2192	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2192	3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	28
PID 3040 wrote to memory of 2192	3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	28
PID 3040 wrote to memory of 2192	3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	28
PID 3040 wrote to memory of 2192	3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	28
PID 3040 wrote to memory of 2192	3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	28
PID 3040 wrote to memory of 2192	3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	28
PID 3040 wrote to memory of 2192	3040	1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe	28

C:\Users\Admin\AppData\Local\Temp\1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.exe
"C:\Users\Admin\AppData\Local\Temp\1d61af4f0800387ab7b8b60835c7e3dbfd3aef86773f9e7532723fd882c07752.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:3040
- 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:2192

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
80KB

MD5
bfa3f24ca5db37111ddf3d90501066b1

SHA1
d43f810ff69d82afcbd95913e15bc3884a575295

SHA256
f17194903ffaad9c6fe107430a40ffc77424ac453d1f0e6b6d7787422b453d49

SHA512
e7ee15da6886e10990b093ff373d500e3a9be883dbccdb6e82f68ce9643b3aa837cf98d52d2b403ae72ff883bfc622638492f7572ac10ee896368cb48e4874a0

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

Filesize
79KB

MD5
5935408f6fb9089d7c4f848cbe168246

SHA1
2ac588007554b5b59273baf3581192ad8e4afbf4

SHA256
b0e526e86c024f746bfd53d01babea97726bc79065e53d502415a6393b53b622

SHA512
52f6b60ca868b4d6557f926ee3feed247e5fd90c48af37faff213f35e11df10dea2f455a9eba7f01ec3a0f9e174b6a09f05eff446f2651a30cec8d3c06c8a86d

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

Filesize
79KB

MD5
5935408f6fb9089d7c4f848cbe168246

SHA1
2ac588007554b5b59273baf3581192ad8e4afbf4

SHA256
b0e526e86c024f746bfd53d01babea97726bc79065e53d502415a6393b53b622

SHA512
52f6b60ca868b4d6557f926ee3feed247e5fd90c48af37faff213f35e11df10dea2f455a9eba7f01ec3a0f9e174b6a09f05eff446f2651a30cec8d3c06c8a86d

Download Submit
\Windows\system\rundll32.exe

Filesize
79KB

MD5
5935408f6fb9089d7c4f848cbe168246

SHA1
2ac588007554b5b59273baf3581192ad8e4afbf4

SHA256
b0e526e86c024f746bfd53d01babea97726bc79065e53d502415a6393b53b622

SHA512
52f6b60ca868b4d6557f926ee3feed247e5fd90c48af37faff213f35e11df10dea2f455a9eba7f01ec3a0f9e174b6a09f05eff446f2651a30cec8d3c06c8a86d

Download Submit
\Windows\system\rundll32.exe

Filesize
79KB

MD5
5935408f6fb9089d7c4f848cbe168246

SHA1
2ac588007554b5b59273baf3581192ad8e4afbf4

SHA256
b0e526e86c024f746bfd53d01babea97726bc79065e53d502415a6393b53b622

SHA512
52f6b60ca868b4d6557f926ee3feed247e5fd90c48af37faff213f35e11df10dea2f455a9eba7f01ec3a0f9e174b6a09f05eff446f2651a30cec8d3c06c8a86d

Download Submit
memory/2192-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2192-23-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3040-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3040-12-0x0000000000390000-0x00000000003A6000-memory.dmp

Filesize
88KB

Download
memory/3040-17-0x0000000000390000-0x00000000003A6000-memory.dmp

Filesize
88KB

Download
memory/3040-22-0x0000000000390000-0x0000000000392000-memory.dmp

Filesize
8KB

Download
memory/3040-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads