c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68

General

Target

c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
Size

86KB
MD5

984a8b4ee6f5425191eeda95b1df5171
SHA1

bc86ab126d2e4bde6844cff5a7a03dcccec09be8
SHA256

c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68
SHA512

b988b89aa9d542b9457941f2d4da3a7e457e5ec89eaecebc4a09cd0075ac92a6390d145cc17d7751c4832f2fe13dbf2640b1f7fff18497e5673c9de76f1f104e
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOVKbvVQFv2B9d:GhfxHNIreQm+HiuKbvVQFv2B9d

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

rundll32.exe

pid process

1780 rundll32.exe

pid	process
1780	rundll32.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

Processes:

rundll32.exec1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

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	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

Drops file in System32 directory 4 IoCs

Processes:

c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
File created	C:\Windows\SysWOW64\¢«.exe	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

Drops file in Windows directory 2 IoCs

Processes:

c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

description	ioc	process
File opened for modification	C:\Windows\system\rundll32.exe	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
File created	C:\Windows\system\rundll32.exe	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

Modifies registry class 15 IoCs

Processes:

c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exerundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716319082"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716319082"	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"	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.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
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

pid	process
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

rundll32.exe

pid process

1780 rundll32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exerundll32.exe

pid process

1072 c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
1780 rundll32.exe
1780 rundll32.exe

pid	process
1780	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe

description	pid	process	target process
PID 1072 wrote to memory of 1780	1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe	rundll32.exe
PID 1072 wrote to memory of 1780	1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe	rundll32.exe
PID 1072 wrote to memory of 1780	1072	c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.exe
"C:\Users\Admin\AppData\Local\Temp\c1b6d7387401e6e4646d9f13fa2b89c04e1871461f206335d37408fa21378a68.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:1072

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:1780

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
76KB

MD5
abb01f8905d863e0bdea183c83c0d20e

SHA1
427d340b1df14cc9e648893eb739c2ba763feb26

SHA256
440e3006cf0701f2e4905ec15770b25ed3a8eca0428d694c77936b2f01f0ad6a

SHA512
d70311dc7d54372ef5357647d86444f1f4f4b669fde3462e99b8019eee9dd58fa6c2bd8424d3f389c27e7baee424b71ef80c614b105b3fc54894492d0e448bfb

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

Filesize
83KB

MD5
bc9759fa9a8ebddc4ed93472a2eaa0ef

SHA1
df63442f95a3f38671fba4bac5082a53b11aa20c

SHA256
ac5d19d121a788282a16b5b00e72183453c561a8c248ecc0b9359a8bf1274153

SHA512
19a6b6e9a442e62c628b391525a7edeb461533ac5b8a76c5797085775dab04f26118cc3b6afdbf58dec083b465b1cac0ee0bd783e4bf5461a796f9e971ef1a3d

Download Submit
memory/1072-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/1072-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads