548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb

General

Target

548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
Size

73KB
MD5

22cfeff13ea92aab4f4cf3c5bfac6b4e
SHA1

10e0caa32edefc262459a66b01029eddf40936af
SHA256

548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb
SHA512

2f1a102f377f0c4505c165c78c7db2b3be48b7a40f526de26200c9e32aa4885b16c10c1d093b60fc9ae8ff9c33c25e18793118835ac7f0759f09a8f8caf00312
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOi/:RshfSWHHNvoLqNwDDGw02eQmh0HjWOi/

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2676	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.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	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\¢«.exe	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
File created	C:\Windows\system\rundll32.exe	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717108430"	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	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717108430"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	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
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2676	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
2676	rundll32.exe
2676	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 2676	1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe	28
PID 1544 wrote to memory of 2676	1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe	28
PID 1544 wrote to memory of 2676	1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe	28
PID 1544 wrote to memory of 2676	1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe	28
PID 1544 wrote to memory of 2676	1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe	28
PID 1544 wrote to memory of 2676	1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe	28
PID 1544 wrote to memory of 2676	1544	548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe	28

C:\Users\Admin\AppData\Local\Temp\548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.exe
"C:\Users\Admin\AppData\Local\Temp\548cbec5eabf1f88660ac9aeb23ff325d2d25d81a67333f3db0e9de7c8b8d6eb.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:1544
- 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:2676

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
80KB

MD5
1c0dba25a10c91eb1d4ef23df5639e9b

SHA1
72cce464d7f76e70194af103e85287df02c3d53e

SHA256
37adf64437d9d58a826cdf9b9a94af1fd974c9743badbbfff5226faf239a604b

SHA512
03f23a1dda9cd854b4cfaea8f3a1d1915d99cda69f213fe422954da86a8ee401c6ea9806f5542d4b2a480941096b945f16da7fe76fd37c3538a11dae68356775

Download Submit
\Windows\system\rundll32.exe

Filesize
79KB

MD5
f979cc9247d4a4bf4f3a272eb596f3d1

SHA1
f1e9431242062f4c7af86819849d6215ed85d42b

SHA256
47c69a9acd38c2a75d12e7499b3e0d2ce0bb276db910555f170319c1016b6d3a

SHA512
39db52bed07a281cc5b21f55a9efff544535e82fcc2ef716be5b7e91202c7f5b560b707e98d69481ec7f3b24d74ba283ad56b4f5d999c19cf05960a505967f3c

Download Submit
memory/1544-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1544-12-0x00000000003E0000-0x00000000003F6000-memory.dmp

Filesize
88KB

Download
memory/1544-18-0x00000000003E0000-0x00000000003F6000-memory.dmp

Filesize
88KB

Download
memory/1544-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1544-22-0x00000000003E0000-0x00000000003E2000-memory.dmp

Filesize
8KB

Download
memory/2676-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads