23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0c

Analysis

max time kernel
120s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-10-2024 08:47

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General

Target

23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe
Size

525KB
MD5

ce65881ed7d49dc88b9a8aabf3846a80
SHA1

2d24120fa547e4808058c19bcbed60627e90cf5a
SHA256

23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0c
SHA512

d8e5898114c3319662f788ff2143f1a5ca36a6b82ca643e342f5e42ef803ddd8237a7c3efd03683f771562d9d84a0445f4fae7eca7a15c5a3e184e8d7759a899
SSDEEP

6144:KWRt+eH9BpoxJI3ANJuBN0PDGxWSqqcfrj8XzL/3upuqs8j8IvwvWGEuTt3n8/yR:HRtEZNJuzVrcX8GW8j5veWpuTtMf8

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4651) 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
3592	Zombie.exe
3304	_MpCmdRun.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Zombie.exe	23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe
File opened for modification	C:\Windows\SysWOW64\Zombie.exe	23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/848-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000c000000023ba8-4.dat	upx
behavioral2/files/0x0008000000023c8a-10.dat	upx
behavioral2/memory/848-22-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-locale-l1-1-0.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\PresentationCore.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\nb.pak.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.contrast-white_scale-100.png.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest4-ppd.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.SqlServer.Configuration.SString.dll.tmp	Zombie.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ar-SA\tipresx.dll.mui.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Reflection.DispatchProxy.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\PresentationCore.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_Trial-ul-oob.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-conio-l1-1-0.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\System.Windows.Forms.Primitives.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_OEM_Perp-ul-phn.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\JitV.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT_K_COL.HXK.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\EntityPicker.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\System.Windows.Controls.Ribbon.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Security.Cryptography.ProtectedData.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\flavormap.properties.tmp	Zombie.exe
File created	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaBrightDemiItalic.ttf.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.Layout.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.ReportingServices.Interfaces.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSO0127.ACL.tmp	Zombie.exe
File created	C:\Program Files\Java\jre-1.8\lib\deploy\messages.properties.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_OEM_Perp-pl.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp4-ul-phn.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\STSLIST.CHM.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\SETLANG_COL.HXC.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\UIAutomationClientSideProviders.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\j2pkcs11.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\policy\unlimited\local_policy.jar.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Trial-ppd.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription2-pl.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\MicrosoftDataStreamerforExcel.dll.manifest.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.Tasks.Dataflow.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\WindowsBase.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PresentationFramework.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe.tmp	Zombie.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.pl-pl.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\UIAutomationClientSideProviders.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\sunjce_provider.jar.tmp	Zombie.exe
File created	C:\Program Files\Java\jre-1.8\bin\server\jvm.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Text.Encoding.Extensions.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\PresentationCore.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Trial-ul-oob.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Java\jre-1.8\bin\w2k_lsa_auth.dll.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Green.xml.tmp	Zombie.exe
File created	C:\Program Files\Common Files\System\Ole DB\de-DE\msdasqlr.dll.mui.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSWORD.OLB.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_OEM_Perp-ul-oob.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.StackTrace.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\System.Windows.Input.Manipulations.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\policy\limited\local_policy.jar.tmp	Zombie.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-handle-l1-1-0.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\javafx_font.dll.tmp	Zombie.exe
File created	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaTypewriterBold.ttf.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Excel.ReportingServices.QueryDesigners.dll.tmp	Zombie.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\tipresx.dll.mui.tmp	Zombie.exe
File created	C:\Program Files\Common Files\System\Ole DB\fr-FR\sqloledb.rll.mui.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Windows.Controls.Ribbon.resources.dll.tmp	Zombie.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\Microsoft.WindowsDesktop.App.runtimeconfig.json.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019VL_MAK_AE-pl.xrm-ms.tmp	Zombie.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_OEM_Perp-ul-oob.xrm-ms.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	23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Zombie.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 3592	848	23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe	84
PID 848 wrote to memory of 3592	848	23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe	84
PID 848 wrote to memory of 3592	848	23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe	84
PID 848 wrote to memory of 3304	848	23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe	85
PID 848 wrote to memory of 3304	848	23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe	85
PID 848 wrote to memory of 3304	848	23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe	85

C:\Users\Admin\AppData\Local\Temp\23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe
"C:\Users\Admin\AppData\Local\Temp\23c2f705711b17b19b5759a3e5d4153b8f5eb856195fc54a1caab74f596eaf0cN.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:848
- 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:3592
- C:\Users\Admin\AppData\Local\Temp\_MpCmdRun.exe
  "_MpCmdRun.exe"
  2⤵
  - Executes dropped EXE
  PID:3304

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-1-5-21-940901362-3608833189-1915618603-1000\desktop.ini.exe

Filesize
69KB

MD5
c0e74dfd14309a64d22c1d620d5e09b4

SHA1
40b4679dabdc3544a4d48a50e61541704d866851

SHA256
05c1d8d56a58bf9e1ad4bd3bf0b86aca6cf8446785da6a5d5d38b541e0877d2b

SHA512
f4f7e7fa4021cf1732c87d63df495e9dd4c6edda15f6c565b8031b8ace615c63960a26e9ac0017d196d30c4555e96938d83ba63e1445548451a71445f9fe7164

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

Filesize
456KB

MD5
e08445b7cddf167e3d70734dddcecbc0

SHA1
49de5e5dcc5750d841767e537b0fca72b39a159c

SHA256
4e25c4181f8b30517eeebd36982c46364f8f1ffa60bce1d0b5bc8df459e71355

SHA512
4c761fa4a8b013a972095356b9f1aa45f3f6e738cb3c0c8b06d2fc38eb0f8e42cb5840dd33193c0048a7a628db98324706ce5f58d5227707251d48416465ed07

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

Filesize
68KB

MD5
fe167822bd148aaf800fa4b74a350a82

SHA1
a9f9a19f9773a7572b11f1cd6197c31df093318a

SHA256
c980cb563ce863dc6e6ce667eb55811cd23fe7a2c0e34e400cb00631cb9f714e

SHA512
040d75b8ae9c0b1c1b96ee3db756cf5b8aa56d3bcb7849d93ee44865b5355448631c3d933e58147743914e23093997de54c0614104fcd5aebcc96dfe8b921b23

Download Submit
memory/848-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/848-22-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download