3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8

Analysis

max time kernel
150s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/10/2024, 11:09

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General

Target

3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe
Size

2.4MB
MD5

396cf3b47c6bab1f66b34794ac38e130
SHA1

350c33f41d187056ecaca8a81f21f7b14b9139ff
SHA256

3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8
SHA512

4ff32765f9a658899e53281ba55cc3be0a6075b886bc862a4b8eb70bee4a58cd341a18056bea90a6d9fb72a34abbd0392a9a0924dbd80c9413bdc215a02ccecc
SSDEEP

49152:KGlWC3YlQt8CWVQ7VFGogWAcF8jH7VaOtXcZ:8Q3YI+W

Score

9^/10

discovery ransomware

Malware Config

Signatures

Renames multiple (5127) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Executes dropped EXE 2 IoCs

pid	Process
4224	Zombie.exe
1852	_NisSrv.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Zombie.exe	3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe
File opened for modification	C:\Windows\SysWOW64\Zombie.exe	3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\+Connect to New Data Source.odc.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogoSmall.scale-140.png.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\rsod\proofing.msi.16.en-us.tree.dat.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Tw Cen MT.xml.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusE5R_SubTrial-ppd.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\msix.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jre-1.8\lib\deploy\messages_it.properties.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PROOF\msgr3jp.dll.tmp	Zombie.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\nl.pak.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\UIAutomationClient.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.contrast-white_scale-140.png.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\ThirdPartyNotices.txt.tmp	Zombie.exe
File created	C:\Program Files\Common Files\System\ado\msader15.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\Microsoft.VisualBasic.Forms.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-runtime-l1-1-0.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN095.XML.tmp	Zombie.exe
File created	C:\Program Files\Common Files\Services\verisign.bmp.tmp	Zombie.exe
File created	C:\Program Files\Internet Explorer\fr-FR\ieinstal.exe.mui.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_fr.properties.tmp	Zombie.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipsita.xml.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\cryptix.md.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_OEM_Perp-pl.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdCO365R_Subscription-pl.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\it\msipc.dll.mui.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN120.XML.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\WindowsBase.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PROOF\msgr8en.dub.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\WindowsFormsIntegration.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\UIAutomationClientSideProviders.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\UIAutomationClient.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationUI.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\fre\StartMenu_Win7.wmv.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdR_Retail-pl.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\DBGCORE.DLL.tmp	Zombie.exe
File created	C:\Program Files\Common Files\System\Ole DB\de-DE\oledb32r.dll.mui.tmp	Zombie.exe
File created	C:\Program Files\Common Files\System\Ole DB\sqloledb.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\WindowsBase.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\icu.md.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PROOF\MSSP7FR.LEX.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected]	Zombie.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\hwritash.dat.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\FPA_FA000000008\FA000000008.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN086.XML.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected]	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp-ul-oob.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Grace-ppd.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-file-l2-1-0.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ObjectModel.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Memory.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\System.Windows.Controls.Ribbon.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\PresentationCore.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProMSDNR_Retail-ul-oob.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.DiagnosticSource.dll.tmp	Zombie.exe
File created	C:\Program Files\Common Files\System\msadc\ja-JP\msdaremr.dll.mui.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\UIAutomationClientSideProviders.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\net.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_MoveDrop32x32.gif.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\sql90.xsl.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected]	Zombie.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\VISSHE.DLL.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.scale-180.png.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Reflection.Metadata.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\WindowsFormsIntegration.resources.dll.tmp	Zombie.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Zombie.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 4224	4884	3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe	84
PID 4884 wrote to memory of 4224	4884	3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe	84
PID 4884 wrote to memory of 4224	4884	3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe	84
PID 4884 wrote to memory of 1852	4884	3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe	86
PID 4884 wrote to memory of 1852	4884	3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe	86

C:\Users\Admin\AppData\Local\Temp\3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe
"C:\Users\Admin\AppData\Local\Temp\3b672e22ae482beb9b219f992a8f78202c1b3f8c688a04783e2a2555e330bbc8N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\SysWOW64\Zombie.exe
  "C:\Windows\system32\Zombie.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  PID:4224
- C:\Users\Admin\AppData\Local\Temp\_NisSrv.exe
  "_NisSrv.exe"
  2⤵
  - Executes dropped EXE
  PID:1852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\$Recycle.Bin\S-1-5-21-3756129449-3121373848-4276368241-1000\desktop.ini.exe

Filesize
39KB

MD5
4446355b8de071b18b9cf310b38d8bd5

SHA1
988fd6a2732876c878cdb4bc3dc753f36d08195b

SHA256
dd4e113f5d47b931402ab3560ff588b149818595c370b63b6aa6b5bc6391239f

SHA512
a1275622bbd1e9d56efee4960efc4e863e8cb2fa4745c76cbc889e2a6ebb082e3c7f9c766caa46d5a857b282dd0f0b8d1e30fc12498bec81fee2cc811bc67e00

Download Submit
C:\Users\Admin\AppData\Local\Temp\_NisSrv.exe

Filesize
2.4MB

MD5
826bf13d3fefe2369ceec3e679d96b7c

SHA1
c5fc719289ae948df373302bde739a0ac28ad573

SHA256
3aabfccd7697584ef580225d8a78f4b1043f319215c3cbc3c461b398ada6e0b3

SHA512
47d463df0b646960ae89288c95322f1e998bc479c71b2ad167ce9d194c629080628a2384c6003574aab1894a7d178b0eec3457f0d0425cc7c4ca2d67837e7e14

Download Submit
C:\Windows\SysWOW64\Zombie.exe

Filesize
38KB

MD5
4db2c8e796fe82f4abbfc6a5d87012a9

SHA1
777a5b53458f823eec836727169cdfb33e38f78e

SHA256
dbbc521378d4e38f9d3648a5e86df05e9ee0d34af3a59d743d227330efe970ab

SHA512
f41bf6bed7a03ff0f11680512cafe4398f407b0776ba607c24b1df18f17ccd2c1537ece6e43b9964efe3116f5d20b09866a49dc6cec19cec4de1eda1dd6b3de7

Download Submit