597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4

General

Target

597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Size

85KB
MD5

618ccc5db60849830230e79e87a6bbd5
SHA1

4c13bf257ce66affd8c21008324fc1c1929150ea
SHA256

597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4
SHA512

43b5e3f11ff98c394eabfdddd2e0a913c63f9082ec4a4ae515f356b08696f4d60624c4d5bb89a64982f756b41383dfec2c5805cce1307d381bfa7d6ff9a88280
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOBrne1gYv:GhfxHNIreQm+Himrne1gYv

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1592	rundll32.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	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.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\¢«.exe	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
File created	C:\Windows\system\rundll32.exe	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1713846211"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1713846211"	rundll32.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\" %*"	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1592	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
1592	rundll32.exe
1592	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1256 wrote to memory of 1592	1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	90
PID 1256 wrote to memory of 1592	1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	90
PID 1256 wrote to memory of 1592	1256	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	90

C:\Users\Admin\AppData\Local\Temp\597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
"C:\Users\Admin\AppData\Local\Temp\597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe"
1⤵
- 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:1256
- 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:1592

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
82KB

MD5
7d22114a34cef21594bd603ccedc4753

SHA1
1ef223cdd9b38f24aa3b7a9f96606c5a4a603a7f

SHA256
f594b23a42488e8a743af4dc736e47672b405b9e68859b708a50129d75819564

SHA512
3c9d3d0d28918101ca8c63b15b8a0cb7b0a2966d0ff5abfc0f05a93e4fe05740b3b6a31b6149176d4542e478d82852950c2faecaf0603ee93c94e4c678cc7eab

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

Filesize
82KB

MD5
cb8b15ae5405faef9b24da273846d923

SHA1
442f41983c0ab4eae9acd93068d0d4c6f4924dd2

SHA256
19bd52c7c0ee321388ae06ca9f292278066204bb4cc490609b8e063a5592dd50

SHA512
2b399745c6e970445a61a443f1368ed3549fab43824433f132f39503cf3ba374fed4260c8086f9d4738a520d2912f43bdd503dcb8f0ebc304ce3cf4793d509b5

Download Submit
memory/1256-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1256-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads