d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996

General

Target

d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
Size

82KB
MD5

ee4d0f0e340f1d4272f3c72c3c2c799e
SHA1

284cfe2aa44ceb79d07ed4e7acf451c615bf1631
SHA256

d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996
SHA512

db864a92171fb6b6650518bbe1f09b8d082cc6c79c0bb576824b811691e3971cd1ce7e86f3ba1b415d759a30d35f0cd5182e5dc3a03fca5a4523276ff55b49e5
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOy4FMc:GhfxHNIreQm+HiB4FM

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1744	rundll32.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.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	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
File created	C:\Windows\SysWOW64\¢«.exe	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
File created	C:\Windows\system\rundll32.exe	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716441142"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	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\" %*"	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716441142"	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	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1744	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
1744	rundll32.exe
1744	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 228 wrote to memory of 1744	228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe	86
PID 228 wrote to memory of 1744	228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe	86
PID 228 wrote to memory of 1744	228	d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe	86

C:\Users\Admin\AppData\Local\Temp\d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.exe
"C:\Users\Admin\AppData\Local\Temp\d4b7bc7bbd162b0659d6caf32bd3ace1160f229e0ef554e43c2cb7904f2ba996.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:228
- 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:1744

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
0b4506c21c490fd20f01c5c4df45092c

SHA1
ad9e0f359ceb3440ce0e4541415b816b2b18690f

SHA256
896a3b3c7b3c8ca884c59ac18d46de1da8e676790a8921d7f1711f04ad284195

SHA512
01385dd1890fc043cc45ff7405272864db19b808ff81af5820e1a93ac9c9632c724ec0ae3f2227b8d673fe4cbc829d8e7f0a38ff610835a5303d96d7fa11eb98

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

Filesize
79KB

MD5
97bded5bf4a77886546984e061229f39

SHA1
9da8d157398c1e1ca7d3b9afa191c72b40926f16

SHA256
78d108464cb0ff6ec0a6d616b8d2dba6fdf9601146d72ad31610fffdc909fd2b

SHA512
eb8961d9ae1ebd74e36ae61e06955208d32a4068d36bee41ba11f563a523004ab1ec7ec3c3891f079fd44d28f63521ff3989c77872aac0a817d322a6bdc61ffb

Download Submit
memory/228-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/228-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads