b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485

General

Target

b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Size

81KB
MD5

7833a4ae985c56c64bb62456b4cbda71
SHA1

cf320643e8c48cf753fc8c4992526625e1c086c6
SHA256

b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485
SHA512

e5edcc105922a6774d3d5153dc72a714ec66af98e65b8e5e9a32f98f29f9a4c1fb5018e27d3b8e9f36d31de50b214d97eac1b85ff1eb1978e7ef9702b5bab604
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOoA1cfYf9:GhfxHNIreQm+HiXA1cfYf9

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
416	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	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.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	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
File created	C:\Windows\SysWOW64\¢«.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
File created	C:\Windows\system\rundll32.exe	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1699771749"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1699771749"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
416	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
416	rundll32.exe
416	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 416	4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	91
PID 4780 wrote to memory of 416	4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	91
PID 4780 wrote to memory of 416	4780	b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe	91

C:\Users\Admin\AppData\Local\Temp\b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
"C:\Users\Admin\AppData\Local\Temp\b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.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:4780
- 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:416

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
82KB

MD5
19b5f2715d8522c5a9fb4c3668d9f17a

SHA1
8eb3a1b67a0ff9f650fc1f43866513f5a272742a

SHA256
6e06ebdb2af86033742c9747ffa78aef524392fa175905b67430d677caea8b16

SHA512
853ef802c344a47198f023e8b34a148500b606147774b4dc5d0efbe3ef854bb2e5e5b59506986518b7cc1be3f78b8c10f6a10aa6d0123cfff73c7d46e11e59c8

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

Filesize
75KB

MD5
090d6ab884b36a98b9e34d85129833f2

SHA1
1d80a00431e58872f1ec6256102097db0ea9434b

SHA256
4f92162d5d5f9fabb7a7280c466e0cda06e755a59c3232f89506ee61d3764622

SHA512
f51726ddb6bde4016ffbf6cc9227c12246aad720af2b68d39c0a3b4017854aff005a501cb06b51e01e967abaab5350af934a50142eaf0e62ef7178ff4b41cbd5

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

Filesize
75KB

MD5
090d6ab884b36a98b9e34d85129833f2

SHA1
1d80a00431e58872f1ec6256102097db0ea9434b

SHA256
4f92162d5d5f9fabb7a7280c466e0cda06e755a59c3232f89506ee61d3764622

SHA512
f51726ddb6bde4016ffbf6cc9227c12246aad720af2b68d39c0a3b4017854aff005a501cb06b51e01e967abaab5350af934a50142eaf0e62ef7178ff4b41cbd5

Download Submit
memory/4780-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4780-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads