d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa

General

Target

d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Size

74KB
MD5

9afab35e020ddd49577409ba12890c68
SHA1

efd7465f4da610804160f7a8314c6661d1199d36
SHA256

d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa
SHA512

db64c83f352843af0b198d5de529a888197fce7e7d515ce1795c1d31fdcdd125f1d2dd8a137673951abeb21d1cbb7113595f4116f894e8f5bf8b4dcd9402af45
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOCab:GhfxHNIreQm+Hipab

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2344	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	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.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\¢«.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
File created	C:\Windows\SysWOW64\¢«.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
File created	C:\Windows\system\rundll32.exe	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.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
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718002325"	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\exefile\shell\open\command	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718002325"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2344	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
2344	rundll32.exe
2344	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3276 wrote to memory of 2344	3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	81
PID 3276 wrote to memory of 2344	3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	81
PID 3276 wrote to memory of 2344	3276	d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe	81

C:\Users\Admin\AppData\Local\Temp\d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.exe
"C:\Users\Admin\AppData\Local\Temp\d37ac64fc8e176d4c2ac0b0b83699746c3a9d7f82d9515f2b3f28ec69df464fa.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:3276
- 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:2344

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
74KB

MD5
985b2b701474f730918ca7eb512fd878

SHA1
bc6711dff6ca5d990fcf373f957e2cea7fdf5782

SHA256
99525218a7fac835dddc6f4a7f495df37513e16e7206a08c0d51c2ff8c1d00d2

SHA512
af6460c47d2ce5f3afce75f6d0767ae980567e139a0b5cf0bfc7e03debdbd21ddf9cea887ee32959ae7379049260513438041b5f501c719f5352adc880f45c7e

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

Filesize
78KB

MD5
ced077ad8d8658542d899acf9e761342

SHA1
e13172bd18c35d87f1bbab78e3e7ab65460d4fde

SHA256
d47cc32060f800fdb65be50476b827cca195019b1f3c0262461b84d328f15978

SHA512
12cc872ab6cdc8db6c8b84894081c4d45f00acf3f993ce59150f7ac0b5f9f0ca62a8c190281f28243cdb69b30f02466f051dd3644b6093e68a6c4e2069ca95e1

Download Submit
memory/3276-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3276-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads