3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37

General

Target

3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Size

75KB
MD5

e2d9f072b262f39de9ec30bad9dfb0ba
SHA1

74ba47eeaa96baa9f471b54cc96a18c4584cecc0
SHA256

3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37
SHA512

ecb05f3059013555423820ac9b27a57cd257414c9b23b79624e7bafc3809a589abbbfdec49ab166bac05768940d10a75ac116e2a4c4b1fb55a5389519594b18b
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOGh5:GhfxHNIreQm+Hidh5

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3064	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.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	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.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	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
File created	C:\Windows\SysWOW64\¢«.exe	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
File created	C:\Windows\system\rundll32.exe	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718062177"	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	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718062177"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3064	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
3064	rundll32.exe
3064	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 3064	3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe	28
PID 3008 wrote to memory of 3064	3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe	28
PID 3008 wrote to memory of 3064	3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe	28
PID 3008 wrote to memory of 3064	3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe	28
PID 3008 wrote to memory of 3064	3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe	28
PID 3008 wrote to memory of 3064	3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe	28
PID 3008 wrote to memory of 3064	3008	3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe	28

C:\Users\Admin\AppData\Local\Temp\3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.exe
"C:\Users\Admin\AppData\Local\Temp\3a2158dc91d86cbd8497983e5764c25ea84a91aae7af34e3d2c13c5b3de08e37.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:3008
- 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:3064

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
77KB

MD5
af669ad25968798ef9b702ceec0e6160

SHA1
355f4283cc558d3da7de96f095d084c15ad92ace

SHA256
72693eca195f46d30b6541d778b88068211c9909895a5137d5b9e328a85e99c0

SHA512
060d72af0bac9056a0212c6e23c82c3bd60cf46d98c2cd1c269c799f437a5cb68c7b735b3954f4975b05aa756c684a1a2cabe17c2a58d1d981b8525d573a0d3b

Download Submit
\Windows\system\rundll32.exe

Filesize
77KB

MD5
577a69cbbb27b02c7da7c4ed69b2390d

SHA1
4705fb15583d219a9abcf974dc4551af3b3d1ac8

SHA256
74a6ab45d70553770e197556095dc9a7ec80f9a2b551778ee2dab8c1a84662f4

SHA512
f83367cc6a8235bce27ead0fd7a664a42f8b1b090bcbd663dfe45b6fe565de1cb5138eef6c8fc2f2a2746b9cb1ca68bcbf92ec2da9aaa22cc1ba27d8ac500482

Download Submit
memory/3008-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3008-12-0x00000000003E0000-0x00000000003F6000-memory.dmp

Filesize
88KB

Download
memory/3008-18-0x00000000003E0000-0x00000000003F6000-memory.dmp

Filesize
88KB

Download
memory/3008-21-0x00000000003E0000-0x00000000003E2000-memory.dmp

Filesize
8KB

Download
memory/3008-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads