c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49

General

Target

c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Size

80KB
MD5

44d4383b50bf783aaf5a1dee4b6a7c4b
SHA1

1f810a8186e83ad622011d74eb26bc01afb3714d
SHA256

c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49
SHA512

68c1f1454dacc48971707cf122c4d8caeba682cdfd4893e09f2801776258eb1518058227f7fcaf5e6436415af5992254007c1d4258b90d8c24340b1ab22b2a54
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOSWXM13:GhfxHNIreQm+HiVWXM13

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2712	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.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	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.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\notepad¢¬.exe	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
File created	C:\Windows\SysWOW64\¢«.exe	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
File opened for modification	C:\Windows\system\rundll32.exe	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	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\" %*"	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1721501532"	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
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	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	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1721501532"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2712	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
2712	rundll32.exe
2712	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2712	2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe	30
PID 2848 wrote to memory of 2712	2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe	30
PID 2848 wrote to memory of 2712	2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe	30
PID 2848 wrote to memory of 2712	2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe	30
PID 2848 wrote to memory of 2712	2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe	30
PID 2848 wrote to memory of 2712	2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe	30
PID 2848 wrote to memory of 2712	2848	c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe	30

C:\Users\Admin\AppData\Local\Temp\c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.exe
"C:\Users\Admin\AppData\Local\Temp\c77cf54b8e96a21be126502e22fc64becea724aaae2172be7024659d6e0b1b49.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:2848
- 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:2712

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
45dc94571c4947e5de7a09df6b63886e

SHA1
8c209b68bb1cfeff11db291fee4d92be0ab93603

SHA256
8c8cdd828df9c6bd3ae31c23e977805625a39238022e35a0a42744a98ac31d57

SHA512
31dd29fb45c8d680de5234302149f186cf1f74a77f02abbb3f518fb72d3781e377238581e54800bafcdb8d98bdc6d1fb59c46cb91aff6b424c723ddf89d2c64b

Download Submit
\Windows\system\rundll32.exe

Filesize
74KB

MD5
08dc672eddf06aa77c2b03ab0ad76671

SHA1
ba5fdb674fb137543c7994c5a52a4949d62c02e7

SHA256
ada7a23b5703d6279b5bafaa0acb2563ee9c95ce08518c50ab7645f172a62ae6

SHA512
fce58f6ac7e4b98eb8e13948b3ba47e7063a5b9d349894a3def60a0c48278eedd080a750f48dfe039a1f3ed15197423957d41c6e8080307c521cd502803ee48e

Download Submit
memory/2712-18-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2848-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2848-11-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/2848-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads