387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006

General

Target

387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Size

80KB
MD5

1abd664ec92c6e9d5e365a0ade7a9fe5
SHA1

d8b2d1b8866f92839246a8af03d637f83466999d
SHA256

387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006
SHA512

e03cd3cd06ba08870a0a57afafeaae9b563122b7ee40d3c669b4d72a5864bfc3be558dfbfd95013e552fcaf1e4c83bcce42f0b48392ceaac20add3d09dddb987
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWO4t:RshfSWHHNvoLqNwDDGw02eQmh0HjWO4t

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2920	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.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	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.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	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
File created	C:\Windows\SysWOW64\¢«.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
File created	C:\Windows\system\rundll32.exe	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe

Modifies registry class 15 IoCs

description	ioc	Process
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¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1720627718"	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.exe %1"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1720627718"	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\" %*"	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2920	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
2920	rundll32.exe
2920	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 2920	2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	28
PID 2200 wrote to memory of 2920	2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	28
PID 2200 wrote to memory of 2920	2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	28
PID 2200 wrote to memory of 2920	2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	28
PID 2200 wrote to memory of 2920	2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	28
PID 2200 wrote to memory of 2920	2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	28
PID 2200 wrote to memory of 2920	2200	387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe	28

C:\Users\Admin\AppData\Local\Temp\387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.exe
"C:\Users\Admin\AppData\Local\Temp\387ec23c372d8d685be8ca417408b3d9b0456dd5b09eda664897ef8d3b4b9006.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:2200
- 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:2920

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
83KB

MD5
c2708d60b8d97d95a49cb6d18ee99411

SHA1
550127f03e945b1adbb3a2b53715e175450a8c1f

SHA256
4808322625076d3411744c5d30d7adb8446d20e0d2791ba2daca7fd58ca4fbb3

SHA512
9031b9941a73db681ae3e54fee166b47d07c1a2c92c3bd2320f793ad134907ed2bc6eaf6399efdd797dfba58f2fab6d036b96530ba1a6a56a8b700c19a97cec2

Download Submit
\Windows\system\rundll32.exe

Filesize
83KB

MD5
572a7f7f7aefe2a83cf9dc1235974e59

SHA1
ad6caa83cf4cdf0a23b16dd2f84e84f13c0f1167

SHA256
2e30f45ff6457a06acb51433bd4d7fa873703b4c64a5981fa5f3a839e592ed62

SHA512
fb6f91b2cf0978a885afc27b03a6bb4e257549884f5bc7c7af4849daff2112880b825b1b6b7b46f54191a41b0df9516d6b2c16b2a0b0ae0a4f83427004ccacf9

Download Submit
memory/2200-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2200-12-0x0000000000260000-0x0000000000276000-memory.dmp

Filesize
88KB

Download
memory/2200-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2200-21-0x0000000000260000-0x0000000000262000-memory.dmp

Filesize
8KB

Download
memory/2920-18-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads