58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c

General

Target

58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Size

81KB
MD5

05fc17fedbd74d5d0ecc48ab681f2a87
SHA1

cbed72a6437648e3eb407446c4ba7e8044c402e6
SHA256

58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c
SHA512

3d5654bd51feaad4c94096904dab09d9b14313f3952085d5cacf169a7c2a102563fff61dbfc45a904d94572370153bb8ec8931cfb6a30ea0ff078b853f4ee799
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOHO/vE:GhfxHNIreQm+HiSO/vE

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1660	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\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
File created	C:\Windows\SysWOW64\¢«.exe	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
File created	C:\Windows\system\rundll32.exe	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.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\exefile\shell\open\command	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717302579"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717302579"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1660	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
1660	rundll32.exe
1660	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 1660	1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe	87
PID 1276 wrote to memory of 1660	1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe	87
PID 1276 wrote to memory of 1660	1276	58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe	87

C:\Users\Admin\AppData\Local\Temp\58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.exe
"C:\Users\Admin\AppData\Local\Temp\58f3e902bd2d511d0efff3f039772a6598b1b615155f221651e38999f485241c.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:1276
- 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:1660

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
9c151c6e6878f34d07db67fe33958036

SHA1
eff3c087d94db41921e0f2235375447bf4b0e329

SHA256
0955c0930c5554f940216e9e7182492a325287cbd6ce258ee2cf58ee66f7f8e3

SHA512
f20427940887574f3a1bcc5ecc12abc82864ea5e0cacb187812d3d1cc905d67ad56ac37ef95d271d64147890f0dee5bd3a5e965292cd4cb233d6e37357b88622

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

Filesize
84KB

MD5
d10c1e6cdc88e04c352192be52bb9df8

SHA1
cfd474d638c93293b84ea4290936d9aad03e2796

SHA256
d941a8745782189aed4c5f3eff9e36ab5c17f20f0d981db50494d9361e6d2cbc

SHA512
8187ed446782b3d569410315aad8b9cc6c017978ebd98b93ae089929e8f078fda1d3fea9f7aa79fd43e1b555e966f9e4325002a0ae9c8dbcb665a6bc2d139a69

Download Submit
memory/1276-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1276-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads