3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064

General

Target

3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
Size

77KB
MD5

40f8e797c310a89ccd1588cf5ee37bde
SHA1

286e1ab40142af200381e4a51abaaa05ae7b8b1d
SHA256

3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064
SHA512

c47573cc4bcb60fa8a64d0965c7346d5e41c98d095ef27c684957e1b9668746a19f9301094e3caa18be53073aec8acd8d4c2c564b058cbba2abf2b76331fc074
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOiM:GhfxHNIreQm+HivM

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
296	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.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	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.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 created	C:\Windows\SysWOW64\notepad¢¬.exe	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
File created	C:\Windows\SysWOW64\¢«.exe	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
File created	C:\Windows\system\rundll32.exe	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.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\txtfile\shell\open\command	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716729030"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716729030"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
296	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
296	rundll32.exe
296	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 296	3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe	28
PID 3048 wrote to memory of 296	3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe	28
PID 3048 wrote to memory of 296	3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe	28
PID 3048 wrote to memory of 296	3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe	28
PID 3048 wrote to memory of 296	3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe	28
PID 3048 wrote to memory of 296	3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe	28
PID 3048 wrote to memory of 296	3048	3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe	28

C:\Users\Admin\AppData\Local\Temp\3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.exe
"C:\Users\Admin\AppData\Local\Temp\3923f76558f685ae910eee4f137ca9de7a5dddb8a890864ca3e65e2f90372064.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:3048
- 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:296

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
83KB

MD5
caee6bd7700cf1f9628cc2d1f8f30edc

SHA1
862a7313511e9973113846c6a0c73310e2b7d466

SHA256
00c49e1cd1e83ba6d62627b8d76cf51112b650f2fe903422dbd4c0d9724455da

SHA512
3f317a2319bb898f3fede317a8fdd5ff18037ed2ab58f55659aeed52c6edd11bf2df596e2201d12d6ee7d08c771f84a882e023efa8511ca8bcd165183657ebb7

Download Submit
\Windows\system\rundll32.exe

Filesize
82KB

MD5
ba1dc6947a1ff54b492c54babe736c0b

SHA1
142de8f5bd384a2765838ecb9aaf37444ad3dbb0

SHA256
c6be341547be9e00da99e08d0be3523274d6c7681ebcf6beb1896c29b7012f64

SHA512
f7ed3dea815ef514fce713ce57c1f00863233fabb7bb94b663deb2a63eb8a5ce3f366842c7491142012087cfc3756dd5a3ab761fce02a4eb0ede545f71481d43

Download Submit
memory/296-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3048-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3048-12-0x00000000005B0000-0x00000000005C6000-memory.dmp

Filesize
88KB

Download
memory/3048-19-0x00000000005B0000-0x00000000005C6000-memory.dmp

Filesize
88KB

Download
memory/3048-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3048-22-0x00000000005B0000-0x00000000005B2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads