Malware Analysis Report

2024-10-10 13:08

Sample ID 240617-en3wzaxeql
Target 23a1767d4e77693bd46f3abfcf10e4d7.exe
SHA256 d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13
Tags
rat dcrat infostealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13

Threat Level: Known bad

The file 23a1767d4e77693bd46f3abfcf10e4d7.exe was found to be: Known bad.

Malicious Activity Summary

rat dcrat infostealer

DcRat

DCRat payload

Dcrat family

Process spawned unexpected child process

DCRat payload

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Drops file in Windows directory

Drops file in Program Files directory

Enumerates physical storage devices

Unsigned PE

Modifies registry class

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-17 04:06

Signatures

DCRat payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Dcrat family

dcrat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-17 04:06

Reported

2024-06-17 04:08

Platform

win7-20240220-en

Max time kernel

122s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe"

Signatures

DcRat

rat infostealer dcrat

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe

DCRat payload

rat
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\chainSurrogate\browsersvc.exe N/A
N/A N/A C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Windows Photo Viewer\ja-JP\smss.exe C:\chainSurrogate\browsersvc.exe N/A
File opened for modification C:\Program Files (x86)\MSBuild\Microsoft\smss.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Windows Portable Devices\explorer.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Windows Portable Devices\7a0fd90576e088 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Windows Photo Viewer\it-IT\27d1bcfc3c54e0 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Java\System.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Java\27d1bcfc3c54e0 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Windows Photo Viewer\ja-JP\69ddcba757bf72 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\MSBuild\Microsoft\smss.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\MSBuild\Microsoft\69ddcba757bf72 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe C:\chainSurrogate\browsersvc.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\chainSurrogate\browsersvc.exe N/A
N/A N/A C:\chainSurrogate\browsersvc.exe N/A
N/A N/A C:\chainSurrogate\browsersvc.exe N/A
N/A N/A C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\chainSurrogate\browsersvc.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1508 wrote to memory of 3044 N/A C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe C:\Windows\SysWOW64\WScript.exe
PID 1508 wrote to memory of 3044 N/A C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe C:\Windows\SysWOW64\WScript.exe
PID 1508 wrote to memory of 3044 N/A C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe C:\Windows\SysWOW64\WScript.exe
PID 1508 wrote to memory of 3044 N/A C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe C:\Windows\SysWOW64\WScript.exe
PID 3044 wrote to memory of 2776 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 3044 wrote to memory of 2776 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 3044 wrote to memory of 2776 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 3044 wrote to memory of 2776 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2776 wrote to memory of 2940 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 2776 wrote to memory of 2940 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 2776 wrote to memory of 2940 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 2776 wrote to memory of 2940 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 2940 wrote to memory of 2404 N/A C:\chainSurrogate\browsersvc.exe C:\Windows\System32\cmd.exe
PID 2940 wrote to memory of 2404 N/A C:\chainSurrogate\browsersvc.exe C:\Windows\System32\cmd.exe
PID 2940 wrote to memory of 2404 N/A C:\chainSurrogate\browsersvc.exe C:\Windows\System32\cmd.exe
PID 2404 wrote to memory of 1444 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 2404 wrote to memory of 1444 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 2404 wrote to memory of 1444 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 2404 wrote to memory of 392 N/A C:\Windows\System32\cmd.exe C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe
PID 2404 wrote to memory of 392 N/A C:\Windows\System32\cmd.exe C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe
PID 2404 wrote to memory of 392 N/A C:\Windows\System32\cmd.exe C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe

"C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\chainSurrogate\vdfN6ZiS0svPJatLSFe.vbe"

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\chainSurrogate\JOucOkolgtw8nKLZO9UO2eSMaA.bat" "

C:\chainSurrogate\browsersvc.exe

"C:\chainSurrogate\browsersvc.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\smss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Portable Devices\explorer.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Portable Devices\explorer.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Portable Devices\explorer.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\System.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\MSOCache\All Users\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 9 /tr "'C:\chainSurrogate\services.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\chainSurrogate\services.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 7 /tr "'C:\chainSurrogate\services.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Recovery\84917bc2-d02e-11ee-b7c7-ea6b8212ffd3\explorer.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\84917bc2-d02e-11ee-b7c7-ea6b8212ffd3\explorer.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\Recovery\84917bc2-d02e-11ee-b7c7-ea6b8212ffd3\explorer.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Program Files\Java\System.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files\Java\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Program Files\Java\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Photo Viewer\ja-JP\smss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\ja-JP\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Photo Viewer\ja-JP\smss.exe'" /rl HIGHEST /f

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\57mvtxYYNa.bat"

C:\Windows\system32\w32tm.exe

w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2

C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe

"C:\Program Files (x86)\Windows Photo Viewer\it-IT\System.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 host1871899.hostland.pro udp
RU 185.26.122.81:80 host1871899.hostland.pro tcp

Files

C:\chainSurrogate\vdfN6ZiS0svPJatLSFe.vbe

MD5 ee3a4b8d5b9a45ac52fab507fcddb2ae
SHA1 101a1a475be56c7924374353a9b60d914c0a64f0
SHA256 c18b8c22abe6c0333b1c9a7e7096f8530b9c75213791df17c67b1dcd609f86c7
SHA512 95d9c4fee2b2760e0cf10eb03d69e48ae8b730b1096756d81d4dcdcacb5da88642836ff2c52d64216f3fb0e87cbc611f4f4ee1ec8e46746a38ef2ca1151049b2

C:\chainSurrogate\JOucOkolgtw8nKLZO9UO2eSMaA.bat

MD5 c4d1668093627b8bad684c203127aea0
SHA1 6671bc621c55e507b9d04b2574edf61e392d07ce
SHA256 71f60eceed543de69425208d9db31d0d5b371792329d7ba45ba384b0327b7c38
SHA512 26cb1b5620d4da7b5e39e2ed7010bcd85c1087e9079214a6c2a41c84805ff67d0ce923ee76ef3c444ba2e944dc3f19ae6dd271f399c425aac5ec8c85edb632a2

\chainSurrogate\browsersvc.exe

MD5 05cf6d069f5b66212af39c9d6c440cce
SHA1 a0bc239516647e46d964f283698af052cd35bc18
SHA256 1481100d64ae0a34fe7d4822c42d4b9e5ce6a870149cef2cd567e0b655867412
SHA512 2f764ca77d1270cb55842371640fe35063452fce99b16bb8f1aef6ea6b2561010e231a83679d7b382181a9662b5d26f42523c93e11417e28433457e89556bd9c

memory/2940-13-0x0000000000C20000-0x0000000000CF6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\57mvtxYYNa.bat

MD5 b6bb3cbe688e764e277b8741f0e675fd
SHA1 1cb4160434c7b8631a6f17b4ea825938d26aad56
SHA256 c3182ed28e95201eb1d4fc0a949a36722dfaa5c4856de1e25f631611f586584a
SHA512 20fdbdb77f62b3a997ee8717a1f884f764991bd6506d86ff336cb8af8f1a907a7e5b7f37f2d5da9ecb44407d129ba1b5b3af3cc9ef42cb6362a36497e767260d

memory/392-37-0x0000000000A40000-0x0000000000B16000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-17 04:06

Reported

2024-06-17 04:08

Platform

win10v2004-20240611-en

Max time kernel

135s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe"

Signatures

DcRat

rat infostealer dcrat

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe

DCRat payload

rat
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation C:\Windows\SysWOW64\WScript.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation C:\chainSurrogate\browsersvc.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\chainSurrogate\browsersvc.exe N/A
N/A N/A C:\Users\Default User\SearchApp.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Windows Photo Viewer\ja-JP\9e8d7a4ca61bd9 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Windows Sidebar\dwm.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Windows Sidebar\6cb0b6c459d5d3 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Windows Sidebar\smss.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Windows Sidebar\69ddcba757bf72 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Common Files\System\msadc\es-ES\RuntimeBroker.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Common Files\System\msadc\es-ES\9e8d7a4ca61bd9 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Windows Photo Viewer\ja-JP\RuntimeBroker.exe C:\chainSurrogate\browsersvc.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\schemas\EAPMethods\StartMenuExperienceHost.exe C:\chainSurrogate\browsersvc.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000_Classes\Local Settings C:\chainSurrogate\browsersvc.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\chainSurrogate\browsersvc.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Default User\SearchApp.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1320 wrote to memory of 528 N/A C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe C:\Windows\SysWOW64\WScript.exe
PID 1320 wrote to memory of 528 N/A C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe C:\Windows\SysWOW64\WScript.exe
PID 1320 wrote to memory of 528 N/A C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe C:\Windows\SysWOW64\WScript.exe
PID 528 wrote to memory of 920 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 528 wrote to memory of 920 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 528 wrote to memory of 920 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 920 wrote to memory of 3704 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 920 wrote to memory of 3704 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 3704 wrote to memory of 4316 N/A C:\chainSurrogate\browsersvc.exe C:\Windows\System32\cmd.exe
PID 3704 wrote to memory of 4316 N/A C:\chainSurrogate\browsersvc.exe C:\Windows\System32\cmd.exe
PID 4316 wrote to memory of 5096 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 4316 wrote to memory of 5096 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 4316 wrote to memory of 2952 N/A C:\Windows\System32\cmd.exe C:\Users\Default User\SearchApp.exe
PID 4316 wrote to memory of 2952 N/A C:\Windows\System32\cmd.exe C:\Users\Default User\SearchApp.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe

"C:\Users\Admin\AppData\Local\Temp\23a1767d4e77693bd46f3abfcf10e4d7.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\chainSurrogate\vdfN6ZiS0svPJatLSFe.vbe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\chainSurrogate\JOucOkolgtw8nKLZO9UO2eSMaA.bat" "

C:\chainSurrogate\browsersvc.exe

"C:\chainSurrogate\browsersvc.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 12 /tr "'C:\Users\Default\taskhostw.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Users\Default\taskhostw.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 7 /tr "'C:\Users\Default\taskhostw.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Program Files\Common Files\System\msadc\es-ES\RuntimeBroker.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Common Files\System\msadc\es-ES\RuntimeBroker.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Program Files\Common Files\System\msadc\es-ES\RuntimeBroker.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Photo Viewer\ja-JP\RuntimeBroker.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\ja-JP\RuntimeBroker.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Photo Viewer\ja-JP\RuntimeBroker.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Sidebar\dwm.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\dwm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Sidebar\dwm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 13 /tr "'C:\chainSurrogate\TextInputHost.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\chainSurrogate\TextInputHost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 13 /tr "'C:\chainSurrogate\TextInputHost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Sidebar\smss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Sidebar\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\sysmon.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sysmon.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\sysmon.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\chainSurrogate\dllhost.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\chainSurrogate\dllhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\chainSurrogate\dllhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\SearchApp.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Users\Default User\SearchApp.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\SearchApp.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Microsoft OneDrive\SearchApp.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Users\All Users\Microsoft OneDrive\SearchApp.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Microsoft OneDrive\SearchApp.exe'" /rl HIGHEST /f

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Adb3B9Emo8.bat"

C:\Windows\system32\w32tm.exe

w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2

C:\Users\Default User\SearchApp.exe

"C:\Users\Default User\SearchApp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 host1871899.hostland.pro udp
RU 185.26.122.81:80 host1871899.hostland.pro tcp
US 8.8.8.8:53 81.122.26.185.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 123.10.44.20.in-addr.arpa udp

Files

C:\chainSurrogate\vdfN6ZiS0svPJatLSFe.vbe

MD5 ee3a4b8d5b9a45ac52fab507fcddb2ae
SHA1 101a1a475be56c7924374353a9b60d914c0a64f0
SHA256 c18b8c22abe6c0333b1c9a7e7096f8530b9c75213791df17c67b1dcd609f86c7
SHA512 95d9c4fee2b2760e0cf10eb03d69e48ae8b730b1096756d81d4dcdcacb5da88642836ff2c52d64216f3fb0e87cbc611f4f4ee1ec8e46746a38ef2ca1151049b2

C:\chainSurrogate\JOucOkolgtw8nKLZO9UO2eSMaA.bat

MD5 c4d1668093627b8bad684c203127aea0
SHA1 6671bc621c55e507b9d04b2574edf61e392d07ce
SHA256 71f60eceed543de69425208d9db31d0d5b371792329d7ba45ba384b0327b7c38
SHA512 26cb1b5620d4da7b5e39e2ed7010bcd85c1087e9079214a6c2a41c84805ff67d0ce923ee76ef3c444ba2e944dc3f19ae6dd271f399c425aac5ec8c85edb632a2

C:\chainSurrogate\browsersvc.exe

MD5 05cf6d069f5b66212af39c9d6c440cce
SHA1 a0bc239516647e46d964f283698af052cd35bc18
SHA256 1481100d64ae0a34fe7d4822c42d4b9e5ce6a870149cef2cd567e0b655867412
SHA512 2f764ca77d1270cb55842371640fe35063452fce99b16bb8f1aef6ea6b2561010e231a83679d7b382181a9662b5d26f42523c93e11417e28433457e89556bd9c

memory/3704-12-0x00007FFA8FFB3000-0x00007FFA8FFB5000-memory.dmp

memory/3704-13-0x0000000000820000-0x00000000008F6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Adb3B9Emo8.bat

MD5 e9bbc2ed8f4a8af47411badf03358e17
SHA1 a270769d4722b19766b1aaa90cae496d00d6830c
SHA256 d14bae214541bfa8860ee3ca5a4a96e2b07dbf0400bed250a66380559ad74045
SHA512 380ca4ec306635b399a21294b731863c7035cf3f65f99e2bc0e0b75cc38f2c8dd20f239103c5e40933364c7dcc9efdcb4ffb326baa41d69cb52c66909ca3a9fe