a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e

General

Target

a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Size

85KB
MD5

e33bfb874d24658a2ca75d0c5d87da8a
SHA1

6ffc59402075e51d832fd9b7e18e616cb39fcc4b
SHA256

a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e
SHA512

ead166cdb581d2fe26642d73bfd49718d435e1b13c83eebe9ad13bd1d426cc541d6194f7684ad60edd24be7aebefec385e4999c400c68bed849b9a99a8507379
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOmoiqWYntz8:GhfxHNIreQm+HiloiqWYntz8

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2216	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.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	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	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\¢«.exe	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
File created	C:\Windows\system\rundll32.exe	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1713665904"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1713665904"	rundll32.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2216	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
2216	rundll32.exe
2216	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 2216	2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe	28
PID 2696 wrote to memory of 2216	2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe	28
PID 2696 wrote to memory of 2216	2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe	28
PID 2696 wrote to memory of 2216	2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe	28
PID 2696 wrote to memory of 2216	2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe	28
PID 2696 wrote to memory of 2216	2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe	28
PID 2696 wrote to memory of 2216	2696	a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe	28

C:\Users\Admin\AppData\Local\Temp\a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.exe
"C:\Users\Admin\AppData\Local\Temp\a4a7522d6a23d52ff68b163c9fa631feedf33b36c412defb577a587fa4fd393e.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:2696
- 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:2216

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
80KB

MD5
14f51023868912ae254970dd1b55bbdb

SHA1
f0ccd7b9c5286ba12a668fb526e81fe168a468e4

SHA256
a72d87b2713f73092996f817c717e213ad94a6662249e04138dcdbc993debde2

SHA512
70c71fcbc38c03e0bfa82b3f726c4caf728d9c390c5f3d2eb8044c4340284dd3e6e11af320048346dfc3c2cf3b492d5e44d4697ac46da58b7c7fc8e26fb5db3b

Download Submit
\Windows\system\rundll32.exe

Filesize
73KB

MD5
102f589b525b8e129d3d942ba0ee5b29

SHA1
30bbac74401479d2cb903f33375a539d00076b54

SHA256
380494b4863df8445d532a3b1631134116ce1bcd6d71cdc0b325823b66ade3bb

SHA512
cdbb42eb553ad981dc9e98dce0199dd8ae474917a400447890ec703cfddb011053bf06c1bc21ddd4c0e031cf47da4d80b17f408bbf990caafc4bf7405ab4dd83

Download Submit
memory/2216-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2696-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2696-11-0x0000000000370000-0x0000000000386000-memory.dmp

Filesize
88KB

Download
memory/2696-17-0x0000000000370000-0x0000000000386000-memory.dmp

Filesize
88KB

Download
memory/2696-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads