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
4808	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	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\notepad¢¬.exe	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
File created	C:\Windows\SysWOW64\¢«.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.exe %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\" %*"	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	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
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.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\" %*"	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697061120"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697061120"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4808	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
4808	rundll32.exe
4808	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 4808	1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	87
PID 1596 wrote to memory of 4808	1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	87
PID 1596 wrote to memory of 4808	1596	c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe	87

C:\Users\Admin\AppData\Local\Temp\c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.exe
"C:\Users\Admin\AppData\Local\Temp\c1d4def7bf45a8a056df6df29b59e1a71cf934f140617dcd3e41dc23140526f5.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:1596
- 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:4808

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
73KB

MD5
97698c56eef2958f364e0d5401ca352a

SHA1
0cefa81e2600b4df48f851d75c4b38b34934225b

SHA256
86ce96a974c991ce53190e1b27824dab832838d6e13a0981753fb776c715cfdf

SHA512
eb8f78235c1ddcc7755ae4aff09eaae8c2786b5744dd0b03f4849d4268881efaba72a0bd12a6b3cf489272615d13c8c519b8bc420bb9b3fc48fa585e60820510

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

Filesize
73KB

MD5
b6583e586b99e8806a5a50f08272864b

SHA1
1d2135c8e155ed3f21eaf58247edf791d700357f

SHA256
6c2472d1b13cbe54165de945879e5e1c7e41aba6ce7997da6c6fe77f9226cf70

SHA512
bcfd511c88f138ca6b47a637ed31739cd3ad8bdb5ce73c574fb8d785315ee060c1a36d4209f36d5697d2b126e72f2163fb5a6f9f92118aa9dfa6c904179a7482

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

Filesize
73KB

MD5
b6583e586b99e8806a5a50f08272864b

SHA1
1d2135c8e155ed3f21eaf58247edf791d700357f

SHA256
6c2472d1b13cbe54165de945879e5e1c7e41aba6ce7997da6c6fe77f9226cf70

SHA512
bcfd511c88f138ca6b47a637ed31739cd3ad8bdb5ce73c574fb8d785315ee060c1a36d4209f36d5697d2b126e72f2163fb5a6f9f92118aa9dfa6c904179a7482

Download Submit
memory/1596-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1596-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4808-14-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads