c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5

General

Target

c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
Size

79KB
MD5

1e56864cdae509a588b60a69e12499e7
SHA1

3619596d43b49b52439b3448f903b4615add70af
SHA256

c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5
SHA512

aec68f512b1edd3b5a948be1aa79415a19ca93b5769492008a4c520755b101d5cbbdbe3c1b679f42619960fff6c379eb369ebe66d4246e5a710000a6c726f293
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOu9w:GhfxHNIreQm+Hi/9w

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

rundll32.exe

pid process

2052 rundll32.exe

pid	process
2052	rundll32.exe

Loads dropped DLL 2 IoCs

Processes:

c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

pid	process
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

Processes:

c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exerundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.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	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

Drops file in System32 directory 4 IoCs

Processes:

c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
File created	C:\Windows\SysWOW64\¢«.exe	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

Drops file in Windows directory 2 IoCs

Processes:

c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

description	ioc	process
File opened for modification	C:\Windows\system\rundll32.exe	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
File created	C:\Windows\system\rundll32.exe	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

Modifies registry class 15 IoCs

Processes:

rundll32.exec1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716518223"	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
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.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	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716518223"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

pid	process
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

rundll32.exe

pid process

2052 rundll32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exerundll32.exe

pid process

2236 c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
2052 rundll32.exe
2052 rundll32.exe

pid	process
2052	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe

description	pid	process	target process
PID 2236 wrote to memory of 2052	2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe	rundll32.exe
PID 2236 wrote to memory of 2052	2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe	rundll32.exe
PID 2236 wrote to memory of 2052	2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe	rundll32.exe
PID 2236 wrote to memory of 2052	2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe	rundll32.exe
PID 2236 wrote to memory of 2052	2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe	rundll32.exe
PID 2236 wrote to memory of 2052	2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe	rundll32.exe
PID 2236 wrote to memory of 2052	2236	c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.exe
"C:\Users\Admin\AppData\Local\Temp\c1a18dcd01678b268380e3575e37fcd49b1f66ed06b086fef5b568a03f47e6e5.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:2236

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:2052

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
79KB

MD5
8b17e3bba3053398d1b21cad94812665

SHA1
b0eb8394225f31e8c3b2bef4363a8d7f8adb8eb0

SHA256
4a55cb75a195c2701dd57edcc86f1e1641932826329b727b3e86d6b31b38bfd7

SHA512
54a82491b1f9da83e0ff6ab3261d7838b839c7afe8d865bdce6c7f01eb506e3f72c6d01093589de540e40b0c196256f9cd79286ec1e3efdf5af9159cc4d609dd

Download Submit
\Windows\system\rundll32.exe
Filesize
79KB

MD5
d2ea743dc05eb8f3e1da70c8d1f7bd90

SHA1
55a295cd52f51e305ef21f03026ae698e8def446

SHA256
359a62005fbbb13e4ecd8ee26483bc1dce3de25222123716f32d787bc6fa42ba

SHA512
086b1e71e4c8e07b1d74815590c200567d99532ddf672dbda2acc3eb1605cee757cbe87eb27a194528caa2459767c92e30027f9160458c4b3ef419f50a957a80

Download Submit
memory/2236-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2236-18-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/2236-17-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/2236-21-0x0000000000270000-0x0000000000272000-memory.dmp

Filesize
8KB

Download
memory/2236-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads