ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962

General

Target

ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe
Size

421KB
MD5

4db536da1315d69825752e8f05d2d929
SHA1

5ef13c6b788e0527f331fc3d70e6be13993c388b
SHA256

ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962
SHA512

73a26c04b4408b6f9c6cd80e20c607e445698ed0b2cc1804fd7526a5e592b49b0b9da3f55143c316824415c06ab37b98a58234fc0613ff33a63ffd959f7ed7d8
SSDEEP

12288:CW6NB3N8rvnF5A2RkdfFU+4pxM9EI7BmL7/:CHDcA0afq+6BIY

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3432	NAYCAS.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings	ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4672	WINWORD.EXE
4672	WINWORD.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4672	WINWORD.EXE
4672	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3092 wrote to memory of 3432	3092	ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe	82
PID 3092 wrote to memory of 3432	3092	ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe	82
PID 3092 wrote to memory of 3432	3092	ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe	82
PID 3092 wrote to memory of 4672	3092	ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe	83
PID 3092 wrote to memory of 4672	3092	ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe	83

C:\Users\Admin\AppData\Local\Temp\ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe
"C:\Users\Admin\AppData\Local\Temp\ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Users\Admin\AppData\Roaming\FJEWZA\NAYCAS.exe
  "C:\Users\Admin\AppData\Roaming\FJEWZA\NAYCAS.exe" -launcher
  2⤵
  - Executes dropped EXE
  PID:3432
- C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
  "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\ca67c9f7edd82fe2dcd46de59a21941cc0cff94011e0fd5c900845d98016e962.exe--.doc" /o ""
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:4672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\FJEWZA\NAYCAS.exe

Filesize
121KB

MD5
f05f4f5be8431f746e59fe409a0b9bb1

SHA1
86364a21b66177b80442589bf92d33df77e0ea44

SHA256
d64e1969994ad748a04f967f198ba3e35fdbebfcad2691edcb15cb8128c7b547

SHA512
6e026b6c02223ebefdf30f027c5bf28221cd91237c3195eaf73b7f076eeaa0020e2a94c7dcb4155c56c1a8b704599db7542142647402472b382881f0decf6d37

Download Submit
C:\Users\Admin\AppData\Roaming\FJEWZA\NAYCAS.exe

Filesize
121KB

MD5
f05f4f5be8431f746e59fe409a0b9bb1

SHA1
86364a21b66177b80442589bf92d33df77e0ea44

SHA256
d64e1969994ad748a04f967f198ba3e35fdbebfcad2691edcb15cb8128c7b547

SHA512
6e026b6c02223ebefdf30f027c5bf28221cd91237c3195eaf73b7f076eeaa0020e2a94c7dcb4155c56c1a8b704599db7542142647402472b382881f0decf6d37

Download Submit
memory/4672-136-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4672-138-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4672-137-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4672-139-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4672-140-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4672-141-0x00007FFB49200000-0x00007FFB49210000-memory.dmp

Filesize
64KB

Download
memory/4672-142-0x00007FFB49200000-0x00007FFB49210000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads