zgrat | e387c084d5c3b62413743e912ee10776564e7c55ba1dc801990b312b88b61efe

Resubmissions

12-05-2024 18:26

240512-w3ftesdb55 10

12-05-2024 01:57

240512-cc9t2aea99 10

Analysis

max time kernel
148s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
12-05-2024 01:57

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General

Target

Nvidia.exe
Size

2.6MB
MD5

87610f8f3d48edf25d48c4c0ba2b3486
SHA1

ab7498abd8626c968c84167ef1c1c503faace1fe
SHA256

e387c084d5c3b62413743e912ee10776564e7c55ba1dc801990b312b88b61efe
SHA512

73840a477b360fb1ab2061087838618a748f8b24560d289d563b4ba4b1b905f62686f4bca2c2e236007be1bc5931711c0d162b1c0f3ade009861e004116ddfe1
SSDEEP

49152:O+8l/s9Yf5u4uT/s9YEQtQRTMYIMi7ztf33cSywWyFoEgn9u65:OtVsGobzsG1tQRjdih8rwcV5

Score

10^/10

zgrat ransomware rat spyware stealer

Malware Config

Signatures

Detect ZGRat V1 1 IoCs

resource	yara_rule
behavioral1/memory/2364-1-0x0000000000990000-0x0000000000C34000-memory.dmp	family_zgrat_v1

ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/2364-1-0x0000000000990000-0x0000000000C34000-memory.dmp	net_reactor

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\T4bzBg0leXAM700i.exe	Nvidia.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\T4bzBg0leXAM700i.exe	Nvidia.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.CashRansomware	Nvidia.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
7	api.ipify.org
8	api.ipify.org
9	icanhazip.com
11	ip-api.com

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Cash.img"	Nvidia.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\TabTip.exe.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\hu-HU\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ja-JP\tabskb.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\ado\msado27.tlb.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\msdasql.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\msdaps.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\es-ES\tabskb.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\es-ES\TipRes.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\osknumpad.xml.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\ado\adojavas.inc.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\en-US\msadcer.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipsptg.xml.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fr-FR\InkObj.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Small_News.jpg.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Filters\offfiltx.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPC.DLL.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\it-IT\msaddsr.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\ado\msado28.tlb.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\de-DE\msdaremr.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\ja-JP\oledb32r.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Filters\odffilt.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\FlickLearningWizard.exe.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ar-SA\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\numbers.xml.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Shades of Blue.htm.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\InkObj.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Garden.htm.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\SpeechEngines\Microsoft\TTS20\de-DE\MSTTSLoc.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\msadcor.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\hwrcatsh.dat.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\da-DK\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\he-IL\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ja-JP\InkWatson.exe.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ru-RU\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fr-FR\mshwLatin.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\osppobjs-spp-plugin-manifest-signed.xrm-ms.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPSVC.EXE.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\fr-FR\msadcer.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\en-US\correct.avi.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\VGX\VGX.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Peacock.jpg.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\Content.xml.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\cs-CZ\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\de-DE\rtscom.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\oskmenu.xml.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\OFFICE14\MSOXMLMF.DLL.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fr-FR\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ja-JP\InputPersonalization.exe.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\zh-CN\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\sr-Latn-CS\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\MSInfo\it-IT\msinfo32.exe.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\dicjp.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\hwruklm.dat.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\journal.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\Microsoft.Ink.dll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\nb-NO\tipresx.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fr-FR\mip.exe.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\symbols\ja-jp-sym.xml.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\it-IT\micaut.dll.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ja-JP\mip.exe.mui.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\sqlxmlx.rll.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipssrl.xml.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main\ko-kr.xml.CashRansomware	Nvidia.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main\zh-phonetic.xml.CashRansomware	Nvidia.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	Nvidia.exe
Token: SeBackupPrivilege	2276	vssvc.exe
Token: SeRestorePrivilege	2276	vssvc.exe
Token: SeAuditPrivilege	2276	vssvc.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\Nvidia.exe
"C:\Users\Admin\AppData\Local\Temp\Nvidia.exe"
1⤵
- Drops startup file
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:2364

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2276

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact