a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99

General

Target

a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
Size

75KB
MD5

9ff77694235c87e182d4081e427a8d4f
SHA1

f17daf701e301f4bb6c8d385e9ad735012a389bb
SHA256

a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99
SHA512

ae8ce3f0048202b1bc39615e760ed35a4b1468b29c500554cd007ed14d30d916b92415c968c1a2649dcc5c5bb467d0ec7a1aa016559dfa195dbeebb1a53b0369
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOCQD:GhfxHNIreQm+HiVQD

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2508	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.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	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.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	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
File created	C:\Windows\SysWOW64\¢«.exe	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
File created	C:\Windows\system\rundll32.exe	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718072982"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718072982"	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\" %*"	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.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	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2508	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
2508	rundll32.exe
2508	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2508	2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe	28
PID 2084 wrote to memory of 2508	2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe	28
PID 2084 wrote to memory of 2508	2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe	28
PID 2084 wrote to memory of 2508	2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe	28
PID 2084 wrote to memory of 2508	2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe	28
PID 2084 wrote to memory of 2508	2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe	28
PID 2084 wrote to memory of 2508	2084	a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe	28

C:\Users\Admin\AppData\Local\Temp\a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.exe
"C:\Users\Admin\AppData\Local\Temp\a3d1dddbfcce8aed41249cbe2965e36b84a2022a595dbb2051a22e8058d0ad99.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:2084
- 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:2508

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
81KB

MD5
e149bd5a35384a72592381ce5d9e3fe6

SHA1
bdae91a1983a12bfeb060c556384865a5d9e71e3

SHA256
df43538e3e2e99df00c7a2b14abf103ff5d4f72df57e51ce3018a056a36ecd6f

SHA512
ba157da431157c78a2e82b39d66675df28d44ac1f2dc51eb323922ba3da0b917c372ed476eb8b4fb78f49d6adc28989febfa202d6f1def663ccc87404d35d50c

Download Submit
\Windows\system\rundll32.exe

Filesize
76KB

MD5
c4cd94af04a475dea5d48e918a8f724e

SHA1
64b5fb63195fd1082b18ec0ae4eff6df7765652f

SHA256
8ad5f87dc4862d38eda1985cc8aeccf6df49c29a77cde4817ce2687685779fca

SHA512
4d807de409ae0190bbc0baa6dfdc241e740e45beeaa5f264fab367917e1d5b4680062c6e034ef1e634304ef79a1df45702fa14f28dbb64e8e4dfcd98d3e8b265

Download Submit
memory/2084-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2084-17-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/2084-18-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/2084-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2084-21-0x00000000002E0000-0x00000000002E2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads