4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c

General

Target

4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
Size

82KB
MD5

eda5dfb18c05aa4f6b0cef0ac672185f
SHA1

bbe46443a971e27a03be09c4ee696b7ebc462dee
SHA256

4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c
SHA512

9d5eaac7d82982850fe964d2fbc52833b3e83f71af26c9861350be0fa55fdc54f3a33d34172315d8643b2a7dc9c40dfc652e6c31b055bef5c59c779cd0e41ec5
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOsyuZvd:GhfxHNIreQm+HinyuZvd

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2172	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.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	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.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	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
File created	C:\Windows\SysWOW64\¢«.exe	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
File created	C:\Windows\system\rundll32.exe	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.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\MSipv	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717183960"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717183960"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.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"	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.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\exefile\shell\open\command\ = "\"%1\" %*"	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2172	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
2172	rundll32.exe
2172	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 2172	1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe	28
PID 1940 wrote to memory of 2172	1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe	28
PID 1940 wrote to memory of 2172	1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe	28
PID 1940 wrote to memory of 2172	1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe	28
PID 1940 wrote to memory of 2172	1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe	28
PID 1940 wrote to memory of 2172	1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe	28
PID 1940 wrote to memory of 2172	1940	4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe	28

C:\Users\Admin\AppData\Local\Temp\4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.exe
"C:\Users\Admin\AppData\Local\Temp\4dd831d68fb9edda4181b41526484b2fa9c505db740b7fa772c770f97511919c.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:1940
- 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:2172

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
76KB

MD5
798b05dadd59dad2c1d901c492245e07

SHA1
ee463904af535d01c785fba162194c7151b6ecbd

SHA256
152f3a68fdd12ec03cf7392b59bbb64095c742c800e4d3c1a6b6ce69b31e4ab5

SHA512
14d55e593956318edf1c9efd3db69c1fe3494a460b1e831f4075e7378fb95e23a70589b27c465a999081c46211dba0e9431c3a8978b521ff55097e869854d7e3

Download Submit
\Windows\system\rundll32.exe

Filesize
84KB

MD5
36f554b114a7a60ecc88c946bf774b9f

SHA1
eaf1a0917a30cd9e5f0872dec5c3c2d244f64e66

SHA256
fe5668bd6e94c9d5b2d3c426571c1751ff9bda3abe41a879849ec2133918d673

SHA512
270ad848f8c1a07899451ab0c01f3c7fa36d35d39ef07c82da2d29f49cfc3b03aeae39ab3399f04d82a17029b50a2726a5ddaa5966def3619073740a2dfca1fb

Download Submit
memory/1940-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1940-18-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/1940-17-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/1940-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1940-22-0x00000000002E0000-0x00000000002E2000-memory.dmp

Filesize
8KB

Download
memory/2172-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads