c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5

General

Target

c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Size

74KB
MD5

6bb96a8a482f0e73a190167085a58ce1
SHA1

3baa5270ef860fc089b8ffa334c4d5a74ce64409
SHA256

c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5
SHA512

01937532e04eb1bcbc55f23b5adc41cf78e8e5b4cf22793786840a55ef027291aed5398c3b29a89ef9fb0fda0fa538e7401f91696ca8ba4a1df90389e4264876
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOs7:RshfSWHHNvoLqNwDDGw02eQmh0HjWOs7

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2744	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.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	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.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	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
File created	C:\Windows\SysWOW64\¢«.exe	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
File created	C:\Windows\system\rundll32.exe	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697061024"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697061024"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	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.exe %1"	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2744	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
2744	rundll32.exe
2744	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2744	2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	28
PID 2156 wrote to memory of 2744	2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	28
PID 2156 wrote to memory of 2744	2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	28
PID 2156 wrote to memory of 2744	2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	28
PID 2156 wrote to memory of 2744	2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	28
PID 2156 wrote to memory of 2744	2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	28
PID 2156 wrote to memory of 2744	2156	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	28

C:\Users\Admin\AppData\Local\Temp\c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
"C:\Users\Admin\AppData\Local\Temp\c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.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:2156
- 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:2744

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
75KB

MD5
68af4fb0c32de647e2c3b01ce5b6b861

SHA1
30139ba320bb9d702b78ac10824c08e1a62ddf85

SHA256
59b91bda4fe4494e261db525ac30a7a0ac9250551489223f2597ea43ad260ee6

SHA512
21963ae5eb8dc05dc20a8fb9dc1a3d43183e0b6fa6672b8b7402fab862877d9f0bc256bf70ca9662e568d5ee1b07bf1571309547d2337e9e9ad67bb76fc4d2fd

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

Filesize
75KB

MD5
ecc29b935530b6bcc93017936c7a11e3

SHA1
cbe69cb30eefb00d463c121a1d4cbdf42961dc9b

SHA256
c15cebccb4632ceceafd553fe861076fae94911f1518bcfe5a9a4711c279b119

SHA512
4609a3d0766a01b7ce331c9881c0b224d38be9e8368536ee32c7d1b7a9ac3ddb9c99d3e8a850622e75557dec97866bae88998119c55885f65f738a9822d3f938

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

Filesize
75KB

MD5
ecc29b935530b6bcc93017936c7a11e3

SHA1
cbe69cb30eefb00d463c121a1d4cbdf42961dc9b

SHA256
c15cebccb4632ceceafd553fe861076fae94911f1518bcfe5a9a4711c279b119

SHA512
4609a3d0766a01b7ce331c9881c0b224d38be9e8368536ee32c7d1b7a9ac3ddb9c99d3e8a850622e75557dec97866bae88998119c55885f65f738a9822d3f938

Download Submit
\Windows\system\rundll32.exe

Filesize
75KB

MD5
ecc29b935530b6bcc93017936c7a11e3

SHA1
cbe69cb30eefb00d463c121a1d4cbdf42961dc9b

SHA256
c15cebccb4632ceceafd553fe861076fae94911f1518bcfe5a9a4711c279b119

SHA512
4609a3d0766a01b7ce331c9881c0b224d38be9e8368536ee32c7d1b7a9ac3ddb9c99d3e8a850622e75557dec97866bae88998119c55885f65f738a9822d3f938

Download Submit
\Windows\system\rundll32.exe

Filesize
75KB

MD5
ecc29b935530b6bcc93017936c7a11e3

SHA1
cbe69cb30eefb00d463c121a1d4cbdf42961dc9b

SHA256
c15cebccb4632ceceafd553fe861076fae94911f1518bcfe5a9a4711c279b119

SHA512
4609a3d0766a01b7ce331c9881c0b224d38be9e8368536ee32c7d1b7a9ac3ddb9c99d3e8a850622e75557dec97866bae88998119c55885f65f738a9822d3f938

Download Submit
memory/2156-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2156-12-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/2156-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2156-20-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/2744-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads