fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4

General

Target

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
Size

81KB
MD5

ecf0687451d381c4eb646695a0a8edc7
SHA1

24c12a78e6bae75ef1c2fad51aea1bff5d09f98d
SHA256

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4
SHA512

91d35137613ea7b06dab527b500ab560253da209fcc4e1770631f336f6022a5ff16a4d03412e10543a76b4eda527ef5c782137b0b0645af6d0c60725e258c6ba
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOSE1:GhfxHNIreQm+HiNE1

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

rundll32.exe

pid process

2560 rundll32.exe

pid	process
2560	rundll32.exe

Loads dropped DLL 2 IoCs

Processes:

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe

pid	process
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

Processes:

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exerundll32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.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

Processes:

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
File created	C:\Windows\SysWOW64\¢«.exe	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe

Drops file in Windows directory 2 IoCs

Processes:

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe

description	ioc	process
File opened for modification	C:\Windows\system\rundll32.exe	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
File created	C:\Windows\system\rundll32.exe	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe

Modifies registry class 15 IoCs

Processes:

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exerundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716521831"	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	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716521831"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe

pid	process
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

rundll32.exe

pid process

2560 rundll32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exerundll32.exe

pid process

3048 fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
2560 rundll32.exe
2560 rundll32.exe

pid	process
2560	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe

description	pid	process	target process
PID 3048 wrote to memory of 2560	3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe	rundll32.exe
PID 3048 wrote to memory of 2560	3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe	rundll32.exe
PID 3048 wrote to memory of 2560	3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe	rundll32.exe
PID 3048 wrote to memory of 2560	3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe	rundll32.exe
PID 3048 wrote to memory of 2560	3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe	rundll32.exe
PID 3048 wrote to memory of 2560	3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe	rundll32.exe
PID 3048 wrote to memory of 2560	3048	fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.exe
"C:\Users\Admin\AppData\Local\Temp\fd3b5311a9bb5719010f3b0c44fc98158b59704bc3b73fbfdd3a6dfee8a393d4.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:2560

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

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\notepad¢¬.exe
Filesize
75KB

MD5
6c6c2920ae2673b9d8a302b9a6a6bacf

SHA1
c34ad7e92df0945e9c9e8719da0f6c704a13f72c

SHA256
72019f78ee5319c30e4d2eb8bb1c826638afcda5fa7d3d2024a00b8b8998b338

SHA512
996232c292296992a54838c38b52b7096c0093af205abca56d97fa94bc9cfff7b8609833a6913089ef86f5dda7fc0a49bcbde401fbaf731ad5b7dc12ca2f5ca9

Download Submit
\Windows\system\rundll32.exe
Filesize
77KB

MD5
9b02adaebe22ae03b2292ac122cc4c0b

SHA1
2391c8b12bb43387780782ad1f00c325ef65a111

SHA256
9425e0d20e1caae9ca4e6f0a392e943d603233fe1a97365f47ca372b385f89ae

SHA512
e8fcca9351b3f3811c7fb621160576e960872ebca549916f18dcce8e854b9c4120e67760b69a0c9a149e205923f9d5435b26eaee36052e57c8ec03d4552ba12b

Download Submit
memory/2560-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

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

Filesize
86KB

Download
memory/3048-12-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/3048-18-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/3048-22-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

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

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads