71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54

General

Target

71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
Size

80KB
MD5

5735a6a5458c40d9f4d665fb56fa8b62
SHA1

8aba31307d45546cb009a8b0cfc79c4e0f832f29
SHA256

71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54
SHA512

0fef7772641e98003733ad933b854fc9006f25aea1a291d4efa763d0ac86173cb0baa6c1bfa9f9b38d6a562bf34597da851aa78bc208c81ca0e5ed8b6bf49a6c
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOMD:RshfSWHHNvoLqNwDDGw02eQmh0HjWOy

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3020	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.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	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.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\notepad¢¬.exe	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
File created	C:\Windows\SysWOW64\¢«.exe	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
File created	C:\Windows\system\rundll32.exe	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe

Modifies registry class 15 IoCs

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\" %*"	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1695271256"	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.exe %1"	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1695271256"	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	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3020	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
3020	rundll32.exe
3020	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 3020	2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe	28
PID 2208 wrote to memory of 3020	2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe	28
PID 2208 wrote to memory of 3020	2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe	28
PID 2208 wrote to memory of 3020	2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe	28
PID 2208 wrote to memory of 3020	2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe	28
PID 2208 wrote to memory of 3020	2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe	28
PID 2208 wrote to memory of 3020	2208	71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe	28

C:\Users\Admin\AppData\Local\Temp\71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.exe
"C:\Users\Admin\AppData\Local\Temp\71cf6e21855662ae341fbc57a0a966216d9505a84fa3a06be4f2304d65446b54.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:2208
- 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:3020

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
0662c6c622289054dbea4f029df2fefa

SHA1
03ae85564f8bb304d7a3a7fca5f6764cd0913e55

SHA256
1e32d3866e56c093b1fc69e79a90ac1a3cec683e2948a4c02d5f99002b0a80ff

SHA512
2ecc4a1292c20c9d1740eac2e034302035d2b8a51381d1257223cd7d22d8012b5f07551362e83005fcdaea44c548d98c4407e5db8eaba5cb0183a498ada3bcc6

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

Filesize
80KB

MD5
b371de9487148785fe4cd215fbcdb533

SHA1
698f51d48536752a590642394071561df268954f

SHA256
2032fe02155b2fdaee3b72b4147b184561ca84b22328e9f662880320dcd74d73

SHA512
45c896b978b57a14d701040fd6dda6f7f6ab5351b250ae9e117ec603c077b42d2d307b54f4ce8847c07c10632627f090b5bdc6890c118a951bc41663ffc18451

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

Filesize
80KB

MD5
b371de9487148785fe4cd215fbcdb533

SHA1
698f51d48536752a590642394071561df268954f

SHA256
2032fe02155b2fdaee3b72b4147b184561ca84b22328e9f662880320dcd74d73

SHA512
45c896b978b57a14d701040fd6dda6f7f6ab5351b250ae9e117ec603c077b42d2d307b54f4ce8847c07c10632627f090b5bdc6890c118a951bc41663ffc18451

Download Submit
\Windows\system\rundll32.exe

Filesize
80KB

MD5
b371de9487148785fe4cd215fbcdb533

SHA1
698f51d48536752a590642394071561df268954f

SHA256
2032fe02155b2fdaee3b72b4147b184561ca84b22328e9f662880320dcd74d73

SHA512
45c896b978b57a14d701040fd6dda6f7f6ab5351b250ae9e117ec603c077b42d2d307b54f4ce8847c07c10632627f090b5bdc6890c118a951bc41663ffc18451

Download Submit
\Windows\system\rundll32.exe

Filesize
80KB

MD5
b371de9487148785fe4cd215fbcdb533

SHA1
698f51d48536752a590642394071561df268954f

SHA256
2032fe02155b2fdaee3b72b4147b184561ca84b22328e9f662880320dcd74d73

SHA512
45c896b978b57a14d701040fd6dda6f7f6ab5351b250ae9e117ec603c077b42d2d307b54f4ce8847c07c10632627f090b5bdc6890c118a951bc41663ffc18451

Download Submit
memory/2208-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2208-12-0x00000000002D0000-0x00000000002E6000-memory.dmp

Filesize
88KB

Download
memory/2208-21-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2208-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3020-18-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3020-22-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads