c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87

General

Target

c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Size

80KB
MD5

7ec1f2be7e4a8961b2cb0fa4b937a05f
SHA1

3eae45cc05ec4c445acb953e2a686b18e8ccce17
SHA256

c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87
SHA512

81c02ddb4f7c45802d5247acb031db4d1e6283b34ffb0b0a139166f7034a466eb3dffaa3d3c67c7a67a4327c397ff2f2f1dc0e3edb055e652faf12d3191e82cf
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOdhx/:GhfxHNIreQm+Highx/

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2076	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.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	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
File created	C:\Windows\SysWOW64\¢«.exe	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
File created	C:\Windows\system\rundll32.exe	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1725897534"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1725897534"	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

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2076	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
2076	rundll32.exe
2076	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2076	2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe	30
PID 2212 wrote to memory of 2076	2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe	30
PID 2212 wrote to memory of 2076	2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe	30
PID 2212 wrote to memory of 2076	2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe	30
PID 2212 wrote to memory of 2076	2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe	30
PID 2212 wrote to memory of 2076	2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe	30
PID 2212 wrote to memory of 2076	2212	c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe	30

C:\Users\Admin\AppData\Local\Temp\c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe
"C:\Users\Admin\AppData\Local\Temp\c77ee0cfff96531648a5330b07536d0947f676995465fec3a27970d9fa998f87.exe"
1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2076

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
76KB

MD5
685f830be23942ecc551e96de5267cc6

SHA1
205e2b01a54446f021beb9f131433bc5216038fb

SHA256
f48a703457619c955ce8214ae8f98450224f036a9994b2e89303df6eb2d4b1f4

SHA512
1883818223ad7a3be5fa8df8521872f2a3e2d6cbde19a3cbbc101e2fc5b91863d3ffb3be64828495f60bc0f9349226cccfdf61643b69efda67a18e10ac8ef417

Download Submit
\Windows\system\rundll32.exe

Filesize
77KB

MD5
d42cba46477b1cda26bf921e98944abd

SHA1
b956d0ed1956c80be307aa5230b6308e7f87ebbe

SHA256
126673bec1b8bbc0c95a8c9b4b3d4a802240feaad1aa47542a444d94e3dcbebc

SHA512
e9cd68070c8d56b2bf99c1aa7485ef443416be4db563896360160cdac34f74f6c873af43954b960f198bd02945e0a457bc0d4513574fbe22918b769d1ebeb7df

Download Submit
memory/2076-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2212-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2212-11-0x0000000000260000-0x0000000000276000-memory.dmp

Filesize
88KB

Download
memory/2212-19-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2212-20-0x0000000000260000-0x0000000000262000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads