5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a

General

Target

5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
Size

73KB
MD5

6316a4a33a47e9477a148cffbca68233
SHA1

46c1259a38f761f239d72fe11681ee8242aa0b66
SHA256

5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a
SHA512

9db17fbce901a246e1573c325de983e6051954863f9b8b665741260ef9d8ad005a157e5935b3ee531930f55610730394e15042396c762c4dd110efbf8ff9ec18
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOzS:RshfSWHHNvoLqNwDDGw02eQmh0HjWOzS

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2176	rundll32.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	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
File created	C:\Windows\SysWOW64\¢«.exe	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
File created	C:\Windows\system\rundll32.exe	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697453533"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697453533"	rundll32.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 (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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2176	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
2176	rundll32.exe
2176	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 2176	3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe	83
PID 3128 wrote to memory of 2176	3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe	83
PID 3128 wrote to memory of 2176	3128	5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe	83

C:\Users\Admin\AppData\Local\Temp\5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.exe
"C:\Users\Admin\AppData\Local\Temp\5aa05795174030d6a9f5090c724a6ebac56f814cb1f89fda62da42a321576d4a.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:3128
- 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:2176

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
483ad87e946cef3451929bdf4bf8c9b5

SHA1
f21d25d2232618a3ceb9eb9e9d20d6467382eb21

SHA256
ed3fb7dc44807f297b7e44d02f2c3a64df51a42f9813f4ec3babe5c03d6134f6

SHA512
141089aaaee4fa65938af061416849834690eb5e9a72f04a5b2b769974b40e6b6178be27f9d067b16f0b24fe55247302f11ad1f85d91cc295925572b87dbaecb

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

Filesize
76KB

MD5
781c3da6d9fd4600239eb73ed0c86047

SHA1
c0219137453eb551955f0c7fec2c62bb5c63f082

SHA256
41d495cf7953418ddb94d5609db0360bc0ea690a479f5bfee820edb0e59c8489

SHA512
a94320d2bd7227d8a9a53e9c7a4c71c827a34449448508bf6ce91311a7e30557e63a4a75457b514fc48d8e35b46e0d6d65b4d1a20f153f680b090809090df4ce

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

Filesize
76KB

MD5
781c3da6d9fd4600239eb73ed0c86047

SHA1
c0219137453eb551955f0c7fec2c62bb5c63f082

SHA256
41d495cf7953418ddb94d5609db0360bc0ea690a479f5bfee820edb0e59c8489

SHA512
a94320d2bd7227d8a9a53e9c7a4c71c827a34449448508bf6ce91311a7e30557e63a4a75457b514fc48d8e35b46e0d6d65b4d1a20f153f680b090809090df4ce

Download Submit
memory/2176-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3128-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/3128-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads