Malware Analysis Report

2025-08-05 17:25

Sample ID 221031-2v76laehbp
Target c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891
SHA256 c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891
Tags
rat dcrat infostealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891

Threat Level: Known bad

The file c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891 was found to be: Known bad.

Malicious Activity Summary

rat dcrat infostealer

Dcrat family

Process spawned unexpected child process

DcRat

DCRat payload

DCRat payload

Executes dropped EXE

Checks computer location settings

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-31 22:55

Signatures

DCRat payload

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

Dcrat family

dcrat

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-31 22:55

Reported

2022-10-31 22:57

Platform

win10v2004-20220901-en

Max time kernel

129s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.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

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
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:\providercommon\DllCommonsvc.exe N/A
N/A N/A C:\providercommon\RuntimeBroker.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation C:\Windows\SysWOW64\WScript.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation C:\providercommon\DllCommonsvc.exe N/A

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe N/A
Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings C:\providercommon\DllCommonsvc.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\providercommon\RuntimeBroker.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\providercommon\DllCommonsvc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\providercommon\RuntimeBroker.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4376 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe C:\Windows\SysWOW64\WScript.exe
PID 4376 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe C:\Windows\SysWOW64\WScript.exe
PID 4376 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe C:\Windows\SysWOW64\WScript.exe
PID 4244 wrote to memory of 3648 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 4244 wrote to memory of 3648 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 4244 wrote to memory of 3648 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 3648 wrote to memory of 2488 N/A C:\Windows\SysWOW64\cmd.exe C:\providercommon\DllCommonsvc.exe
PID 3648 wrote to memory of 2488 N/A C:\Windows\SysWOW64\cmd.exe C:\providercommon\DllCommonsvc.exe
PID 2488 wrote to memory of 2828 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2488 wrote to memory of 2828 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2488 wrote to memory of 1060 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2488 wrote to memory of 1060 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2488 wrote to memory of 4708 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2488 wrote to memory of 4708 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2488 wrote to memory of 4408 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2488 wrote to memory of 4408 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2488 wrote to memory of 4592 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\cmd.exe
PID 2488 wrote to memory of 4592 N/A C:\providercommon\DllCommonsvc.exe C:\Windows\System32\cmd.exe
PID 4592 wrote to memory of 2876 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 4592 wrote to memory of 2876 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 4592 wrote to memory of 1368 N/A C:\Windows\System32\cmd.exe C:\providercommon\RuntimeBroker.exe
PID 4592 wrote to memory of 1368 N/A C:\Windows\System32\cmd.exe C:\providercommon\RuntimeBroker.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe

"C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\providercommon\1zu9dW.bat" "

C:\providercommon\DllCommonsvc.exe

"C:\providercommon\DllCommonsvc.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\providercommon\RuntimeBroker.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\providercommon\RuntimeBroker.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 13 /tr "'C:\providercommon\cmd.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 6 /tr "'C:\providercommon\cmd.exe'" /rl HIGHEST /f

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\DllCommonsvc.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\RuntimeBroker.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\cmd.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\RuntimeBroker.exe'

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Xt53IWezav.bat"

C:\Windows\system32\w32tm.exe

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

C:\providercommon\RuntimeBroker.exe

"C:\providercommon\RuntimeBroker.exe"

Network

Country Destination Domain Proto
NL 104.80.225.205:443 tcp
US 8.8.8.8:53 raw.githubusercontent.com udp
US 185.199.108.133:443 raw.githubusercontent.com tcp
NL 45.82.176.111:80 45.82.176.111 tcp
NL 45.82.176.111:80 45.82.176.111 tcp
US 20.189.173.4:443 tcp
US 8.253.183.120:80 tcp
US 8.253.183.120:80 tcp
US 8.253.183.120:80 tcp
NL 45.82.176.111:80 45.82.176.111 tcp

Files

memory/4244-132-0x0000000000000000-mapping.dmp

C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe

MD5 8088241160261560a02c84025d107592
SHA1 083121f7027557570994c9fc211df61730455bb5
SHA256 2072cc9a4a3b84d4c5178ab41c5588eea7d0103e3928e34d64f17bf97f3d1cc1
SHA512 20d9369dd359315848ea30144383a0bb479d86059fdbc3b3256ac84f998193512feb3b1799ab663619920c99fe7e0ebba33ada31a3855094b956fcd351c90478

C:\providercommon\1zu9dW.bat

MD5 6783c3ee07c7d151ceac57f1f9c8bed7
SHA1 17468f98f95bf504cc1f83c49e49a78526b3ea03
SHA256 8ab782f0f327a2021530e7230d3aee8abbecb7eed59482a3a46e78b9e3862322
SHA512 c6012d4bfac1ed14d0fd9f0eabd0e1c3d647b343db292a907b246271d52a4b7469c809db43910ddba2e8c5045f9cb3d24d0af62d363281e6cb8b39ee94a183e8

memory/3648-135-0x0000000000000000-mapping.dmp

memory/2488-136-0x0000000000000000-mapping.dmp

C:\providercommon\DllCommonsvc.exe

MD5 bd31e94b4143c4ce49c17d3af46bcad0
SHA1 f8c51ff3ff909531d9469d4ba1bbabae101853ff
SHA256 b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63
SHA512 f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

C:\providercommon\DllCommonsvc.exe

MD5 bd31e94b4143c4ce49c17d3af46bcad0
SHA1 f8c51ff3ff909531d9469d4ba1bbabae101853ff
SHA256 b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63
SHA512 f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

memory/2488-139-0x00000000000B0000-0x00000000001C0000-memory.dmp

memory/2488-140-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

memory/2828-141-0x0000000000000000-mapping.dmp

memory/4708-143-0x0000000000000000-mapping.dmp

memory/4408-144-0x0000000000000000-mapping.dmp

memory/1060-142-0x0000000000000000-mapping.dmp

memory/4592-145-0x0000000000000000-mapping.dmp

memory/4408-146-0x000002BE635A0000-0x000002BE635C2000-memory.dmp

memory/2488-147-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

memory/2876-149-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\Xt53IWezav.bat

MD5 e743aec95ed87abd917d81c6ecbc60e0
SHA1 fda8b0c3bafbd2cf9e4ceeccf41524bc089552c3
SHA256 c8799c37c416e39d0a24bd7c108c40927842e5c915840f8c8a4b8bd02d109281
SHA512 ab358a330176b5e79330d7689746a0197e0681a4034b51c489ec17e712c7e8ce35b52ed84bc30a4ca09c323b1e42f296b3873eebc80adab1ebbf3dc3d0caad63

memory/2828-150-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

memory/1060-151-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

memory/4408-152-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

memory/4708-153-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA256 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA256 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

memory/4408-157-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

memory/1060-158-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

memory/2828-159-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

memory/4708-161-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

C:\providercommon\RuntimeBroker.exe

MD5 bd31e94b4143c4ce49c17d3af46bcad0
SHA1 f8c51ff3ff909531d9469d4ba1bbabae101853ff
SHA256 b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63
SHA512 f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

memory/1368-162-0x0000000000000000-mapping.dmp

C:\providercommon\RuntimeBroker.exe

MD5 bd31e94b4143c4ce49c17d3af46bcad0
SHA1 f8c51ff3ff909531d9469d4ba1bbabae101853ff
SHA256 b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63
SHA512 f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

memory/1368-165-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

memory/1368-166-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp