a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0

General

Target

a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
Size

73KB
MD5

e39c934b9f05ce4a4361a6ec8f2eb790
SHA1

5696cd0f681aa53e6e57e97e8dd675f58eba80aa
SHA256

a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0
SHA512

95ea40aa7a7f2c3435c4a78252de381f09158f3483ec626b43e45c0bfd3c069c1977295c5a1b0daaca752bb0be0bb81df9ae08806750037083b9da529da22852
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWO8:RshfSWHHNvoLqNwDDGw02eQmh0HjWO8

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1636	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\" %*"	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.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	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
File created	C:\Windows\SysWOW64\¢«.exe	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
File created	C:\Windows\system\rundll32.exe	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1715415488"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1715415488"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %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\" %*"	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1636	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
1636	rundll32.exe
1636	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 1636	5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe	81
PID 5008 wrote to memory of 1636	5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe	81
PID 5008 wrote to memory of 1636	5008	a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe	81

C:\Users\Admin\AppData\Local\Temp\a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.exe
"C:\Users\Admin\AppData\Local\Temp\a89303deec42806c7f9939aa1b4ed2c52d61b81497b2046e36efbf5590b5d7b0.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:5008
- 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:1636

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
81KB

MD5
1fba939c9785df61bbddbbf3e2657150

SHA1
b895bc2a8b58e129779d3177c25fe36e13f8592c

SHA256
a18c79dd3731482f8fb1b00c3bbf16afa512f655ffba3b10dc308258c3b5cae9

SHA512
7cf8f00f1daba7cf235f894904e18ae39c56b89a3263beff7a5a493911c7a4d1dc2e09378b11450ad282529620f431a90c8af91864d7eabd1ecee1796df2c5f3

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

Filesize
73KB

MD5
8b83af8f861b1073ca61af16fb6dc924

SHA1
f550fe632a3eb991110f60e7e79fe0aa72f1ead6

SHA256
23551cc3a70a63b30d2f3d9861bb62feb8ad8b859d511904e837f33968f8f3c9

SHA512
66bcb5373f994470d832ef86d4d690c227b94398cb0e58cf07015474f632f113edf98baa7c89c784e9155b812840bbcc7d3e279c0a69c05de0fb5c216e291b76

Download Submit
memory/5008-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/5008-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads