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
2340	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.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 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
File created	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
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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	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
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	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\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1713846205"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1713846205"	rundll32.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"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2340	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
2340	rundll32.exe
2340	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 2340	2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	28
PID 2972 wrote to memory of 2340	2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	28
PID 2972 wrote to memory of 2340	2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	28
PID 2972 wrote to memory of 2340	2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	28
PID 2972 wrote to memory of 2340	2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	28
PID 2972 wrote to memory of 2340	2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	28
PID 2972 wrote to memory of 2340	2972	597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe	28

C:\Users\Admin\AppData\Local\Temp\597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.exe
"C:\Users\Admin\AppData\Local\Temp\597c835575242d24ac49bae8b7c14e06aeb6f28199869d6b2c12ab80b3b484b4.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:2972
- 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:2340

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
78KB

MD5
a3e8e946a7d6cf2dc49dfbe4ae8d7ce9

SHA1
2b629679a621622e0b050138e35bb5d4cc6a32fa

SHA256
cdbf5c07d3bc470efe469388a4128cb8a155af128977aed75f2fad868bee6523

SHA512
f5635ed5ef29d65799b20147d9308551ac71beb819bbdee76b565f48abef8e8a783d5146a4196d02428be1410ee3e582b745884fe407aa8c5039f8b9bf306424

Download Submit
\Windows\system\rundll32.exe

Filesize
79KB

MD5
4bd321fc529eeff5a6a4d5751a69a566

SHA1
d72fd9c93d51bbb5b70683853c2eed320c0bafd6

SHA256
2ee5ec45666ec8c23a38a6e1ecd226219a3cf57bcdd8384347837ca8e9994600

SHA512
ed72e568710d8b07d048a030ac1e5dc7f114e5d934ce2fcba5c5feb003e6806b930cfbccb74798ace9c892669c7fad8b2bc935849dad55c7f1f0d791a568b550

Download Submit
memory/2340-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2972-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2972-17-0x0000000000360000-0x0000000000376000-memory.dmp

Filesize
88KB

Download
memory/2972-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2972-21-0x0000000000360000-0x0000000000362000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads