Analysis
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max time kernel
121s -
max time network
129s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
31-05-2024 17:29
Static task
static1
Behavioral task
behavioral1
Sample
Ransom.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Ransom.exe
Resource
win10v2004-20240426-en
General
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Target
Ransom.exe
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Size
376KB
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MD5
120c6ddfc24274b6e2e3a1ba7dc519ab
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SHA1
29936b1aa952a89905bf0f7b7053515fd72d8c5c
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SHA256
2289706f678585059502a24283e0f55d56cf477524753c606f64825bba66fca8
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SHA512
dd9b2fb6cd5f6f044daa80ef634078849032ebbdbd1d293bb7bcb0270aa8b7360c39addb0826c7a3ddc8714b559bf8828e8e506ac91bcb4702a72f4c8ec4850a
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SSDEEP
6144:KFtgKBIxGS/bbWGGJK8PpzR1WpOJOQMeEBwhUg5bBDNPbsP/qrscpyj4CVKSkn:+tgKIxfbbezR1WpOJJMjihU030/qRMra
Malware Config
Extracted
C:\$Recycle.Bin\HOW TO BACK FILES.txt
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion
Signatures
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TargetCompany,Mallox
TargetCompany (aka Mallox) is a ransomware which encrypts files using a combination of ChaCha20, AES-128, and Curve25519, first seen in June 2021.
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (7209) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\U: Ransom.exe File opened (read-only) \??\V: Ransom.exe File opened (read-only) \??\Z: Ransom.exe File opened (read-only) \??\E: Ransom.exe File opened (read-only) \??\B: Ransom.exe File opened (read-only) \??\N: Ransom.exe File opened (read-only) \??\Q: Ransom.exe File opened (read-only) \??\T: Ransom.exe File opened (read-only) \??\R: Ransom.exe File opened (read-only) \??\D: Ransom.exe File opened (read-only) \??\G: Ransom.exe File opened (read-only) \??\H: Ransom.exe File opened (read-only) \??\K: Ransom.exe File opened (read-only) \??\P: Ransom.exe File opened (read-only) \??\A: Ransom.exe File opened (read-only) \??\J: Ransom.exe File opened (read-only) \??\L: Ransom.exe File opened (read-only) \??\S: Ransom.exe File opened (read-only) \??\Y: Ransom.exe File opened (read-only) \??\I: Ransom.exe File opened (read-only) \??\M: Ransom.exe File opened (read-only) \??\O: Ransom.exe File opened (read-only) \??\W: Ransom.exe File opened (read-only) \??\X: Ransom.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 api.ipify.org -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.simpleconfigurator_1.1.0.v20131217-1203.jar Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH02736G.GIF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD14985_.GIF Ransom.exe File created C:\Program Files\Microsoft Games\Multiplayer\Checkers\es-ES\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Miquelon Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\schema\com.jrockit.mc.rjmx.service.exsd Ransom.exe File opened for modification C:\Program Files\Windows Journal\Templates\Genko_2.jtp Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0107154.WMF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18187_.WMF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\DGTOC.DPV Ransom.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\brx\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\javafx-mx.jar Ransom.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\passport.png Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Chisinau Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\DD01772_.WMF Ransom.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.feature_3.9.0.v20140827-1444\META-INF\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files\7-Zip\Lang\az.txt Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms\bg_TexturedBlue.gif Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\javax.xml_1.3.4.v201005080400.jar Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SY01253_.WMF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA02361_.WMF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO00505_.WMF Ransom.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\fur\LC_MESSAGES\vlc.mo Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\Sounds\People\Whistling.wav Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\NAVBRPH2.POC Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.browser.jdp.zh_CN_5.5.0.165303.jar Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.simpleconfigurator.nl_ja_4.4.0.v20140623020002.jar Ransom.exe File opened for modification C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\America\Argentina\La_Rioja Ransom.exe File opened for modification C:\Program Files\Windows Journal\Templates\Dotted_Line.jtp Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE01797_.WMF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH02742G.GIF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\WING2.WMF Ransom.exe File created C:\Program Files (x86)\Adobe\Reader 9.0\Reader\plug_ins\AcroForm\PMP\HOW TO BACK FILES.txt Ransom.exe File created C:\Program Files (x86)\Microsoft Office\Templates\1033\FAX\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Biscay\TAB_ON.GIF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Templates\1033\AdjacencyMergeLetter.dotx Ransom.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\config\Modules\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Tracker\warning.gif Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Antarctica\Vostok Ransom.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\hy\LC_MESSAGES\vlc.mo Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\FD00076_.WMF Ransom.exe File created C:\Program Files (x86)\Microsoft Office\Office14\STARTUP\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Rectangles\720x480icongraphic.png Ransom.exe File opened for modification C:\Program Files\Java\jre7\lib\zi\Etc\GMT-5 Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA02398_.WMF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE02278_.WMF Ransom.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\mai\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.emf.common_2.10.1.v20140901-1043\META-INF\eclipse.inf Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms5\rtf_pressed.gif Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.services_1.1.0.v20140328-1925.jar Ransom.exe File opened for modification C:\Program Files\Java\jre7\lib\ext\jaccess.jar Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\FD00428_.WMF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\HH01291_.WMF Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0382931.JPG Ransom.exe File opened for modification C:\Program Files (x86)\Windows Media Player\Skins\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Stacking\NavigationRight_SelectionSubpicture.png Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\BrightOrange.css Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms4\FormsStyles\Country.css Ransom.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-coredump_ja.jar Ransom.exe File opened for modification C:\Program Files\Windows Media Player\fr-FR\wmpnssui.dll.mui Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\NEWS.XML Ransom.exe File created C:\Program Files\Microsoft Games\SpiderSolitaire\it-IT\HOW TO BACK FILES.txt Ransom.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\LINES\BD14594_.GIF Ransom.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2408 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2044 Ransom.exe 2044 Ransom.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeDebugPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe Token: SeTakeOwnershipPrivilege 2044 Ransom.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2044 wrote to memory of 2508 2044 Ransom.exe 28 PID 2044 wrote to memory of 2508 2044 Ransom.exe 28 PID 2044 wrote to memory of 2508 2044 Ransom.exe 28 PID 2044 wrote to memory of 2508 2044 Ransom.exe 28 PID 2044 wrote to memory of 2540 2044 Ransom.exe 30 PID 2044 wrote to memory of 2540 2044 Ransom.exe 30 PID 2044 wrote to memory of 2540 2044 Ransom.exe 30 PID 2044 wrote to memory of 2540 2044 Ransom.exe 30 PID 2044 wrote to memory of 2408 2044 Ransom.exe 32 PID 2044 wrote to memory of 2408 2044 Ransom.exe 32 PID 2044 wrote to memory of 2408 2044 Ransom.exe 32 PID 2044 wrote to memory of 2408 2044 Ransom.exe 32 -
System policy modification 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\shutdownwithoutlogon = "0" Ransom.exe -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\Ransom.exe"C:\Users\Admin\AppData\Local\Temp\Ransom.exe"1⤵
- Enumerates connected drives
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2044 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures2⤵PID:2508
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c bcdedit /set {current} recoveryenabled no2⤵PID:2540
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C:\Windows\system32\vssadmin.exe"C:\Windows\sysnative\vssadmin.exe" delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:2408
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
910B
MD5967332f51cc1b23681972db097335a1f
SHA157bfcdeb4f18d5da10e167c7b56eb2f4565ecb46
SHA25660baf6b39989fbe66de47d1582c7f17071301e71f0a76d3d5c1eeea501c4ef80
SHA51287b9c3f4fcf57788c2d336fe04575bbf0e3587a0c3244fb2ec49dd096dc142c9c89872fa535dc2c3b927d4d5fc67c4788292df04ec41bf2ec2be8e3f17042786