3ceffdab08d5a316c737a1e34ec25c4e65934cd935483defdb2b70bc4d64dd64

Resubmissions

25-01-2021 17:15

210125-zcqahbtql6 10

Analysis

max time kernel
136s
max time network
135s
platform
windows10_x64
resource
win10v20201028
submitted
25-01-2021 17:15

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General

Target

$RYG17M9.doc
Size

399KB
MD5

908cb0ed7bdd34f4712318c8f2c75020
SHA1

acadaf2905c51eeff68ae9f4e9e15b1d29848de4
SHA256

6f1eadba6e73d7451a46ae74d2dc9e7d31c9d119e739c44c35e7fbef7e121c69
SHA512

dc297307efd3675fe6e4ecf930291b7d844ed700465d4072b62cb8e3b821989a7c2ecb9497a1c422beea4b7f132f74c61853fa62c7311e14b5b1e980b30ee7ba

Score

5^/10

ransomware

Malware Config

Signatures

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

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

Processes:

WINWORD.EXE

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

Processes:

WINWORD.EXE

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

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

988 WINWORD.EXE
988 WINWORD.EXE
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

WINWORD.EXE

pid process

988 WINWORD.EXE
988 WINWORD.EXE
988 WINWORD.EXE
988 WINWORD.EXE
988 WINWORD.EXE
988 WINWORD.EXE
988 WINWORD.EXE
988 WINWORD.EXE

pid	process
988	WINWORD.EXE
988	WINWORD.EXE

pid	process
988	WINWORD.EXE
988	WINWORD.EXE
988	WINWORD.EXE
988	WINWORD.EXE
988	WINWORD.EXE
988	WINWORD.EXE
988	WINWORD.EXE
988	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 988 wrote to memory of 3960	988	WINWORD.EXE	splwow64.exe
PID 988 wrote to memory of 3960	988	WINWORD.EXE	splwow64.exe

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\$RYG17M9.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:988
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:3960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/988-2-0x00007FF9F0570000-0x00007FF9F0580000-memory.dmp

Filesize
64KB

Download
memory/988-3-0x00007FF9F0570000-0x00007FF9F0580000-memory.dmp

Filesize
64KB

Download
memory/988-4-0x00007FF9F0570000-0x00007FF9F0580000-memory.dmp

Filesize
64KB

Download
memory/988-5-0x00007FFA14450000-0x00007FFA14A87000-memory.dmp

Filesize
6.2MB

Download
memory/988-6-0x00007FF9F0570000-0x00007FF9F0580000-memory.dmp

Filesize
64KB

Download
memory/3960-7-0x0000000000000000-mapping.dmp

Download
memory/3960-8-0x0000000002640000-0x0000000002741000-memory.dmp

Filesize
1.0MB

Download