c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fb

Analysis

max time kernel
149s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27/09/2024, 01:30

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General

Target

c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
Size

83KB
MD5

c44dda680a23d1030ba57dc9360eaa40
SHA1

402c0d0d64c6b1dc3e7314ffafcd8affe128a9dc
SHA256

c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fb
SHA512

7e84a42c7a41a648ddbdbd8d41860dc9555efacb653e2d2380d74756f14660a8585de1efbe4cebbbd81f24e86e6c6f878743ebce936f4930cfb98d89e0104d3e
SSDEEP

1536:V7Zf/FAxTWoJJ7TKyXKoyXKoTW7JJ7TKyXKoyXK3:fny17KdKv7KdK3

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (5029) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3372-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0009000000023453-2.dat	upx
behavioral2/files/0x000f000000022902-6.dat	upx
behavioral2/memory/3372-866-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\msadc\adcvbs.inc.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\psfontj2d.properties.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected]	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000042\strings.resjson.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\xmlresolver.md.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\mscss7wre_es.dub.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-debug-l1-1-0.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Grace-ppd.xrm-ms.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ONWordAddin.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\dotnet.exe.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\System.Windows.Forms.Design.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Common Files\System\en-US\wab32res.dll.mui.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.Requests.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_de.properties.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_Grace-ppd.xrm-ms.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.zh-tw.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\nl-NL\tipresx.dll.mui.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-utility-l1-1-0.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProVL_KMS_Client-ul-oob.xrm-ms.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\Microsoft.Office.Tools.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.contrast-black_scale-80.png.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\7-Zip\Lang\es.txt.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\tr-TR\tipresx.dll.mui.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jmap.exe.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\dtplugin\deployJava1.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\trusted.libraries.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Common Files\System\wab32res.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\WindowsBase.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Xaml.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\GRAPH_COL.HXC.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\ReachFramework.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\WindowsBase.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\ReachFramework.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\System.Windows.Forms.Primitives.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Security.Cryptography.Xml.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-ul-phn.xrm-ms.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\EventSource.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL065.XML.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.XPath.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\System.Xaml.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\PresentationUI.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\AugLoop\third-party-notices.txt.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\Microsoft.NETCore.App.deps.json.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OutlookVL_MAK-pl.xrm-ms.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\AUDIOSEARCHLTS.DLL.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\7-Zip\Lang\be.txt.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Input.Manipulations.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Integration\SPPRedist.msi.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OutlookVL_KMS_Client-ul.xrm-ms.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Retail-pl.xrm-ms.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.Specialized.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\UIAutomationClient.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\System.Xaml.resources.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\BORDERS\MSART13.BDR.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\rtscom.dll.mui.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Internet Explorer\es-ES\iexplore.exe.mui.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-datetime-l1-1-0.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial-Times New Roman.xml.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTrial-ul-oob.xrm-ms.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Interceptor.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-white_scale-180.png.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-locale-l1-1-0.dll.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipscat.xml.tmp	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe

C:\Users\Admin\AppData\Local\Temp\c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe
"C:\Users\Admin\AppData\Local\Temp\c4ab87a1f8e20f25ec34ae0e0a2c24e25ffb6768d85fcc5ec9081ed6ccab00fbN.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3372

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-1-5-21-945322488-2060912225-3527527000-1000\desktop.ini.tmp

Filesize
83KB

MD5
27982984942cbaa9a8f86346a95cc4a6

SHA1
added1495f3054066705664b43bcd785239b7ad9

SHA256
03b05596dd54ddc0e6c16706f44503dfffb787f006b48682fb05837846bb31ca

SHA512
3838528231d00ec1041361b8d103ec0e17084cd7677cde1d89af240a0ae404745850ba53465fa9c79943c26b63da91245dc0c4447decc8c6f99488cbbe27e6a6

Download Submit
C:\Program Files\7-Zip\7-zip.dll.tmp

Filesize
182KB

MD5
05a4d8748419d4aa38b7d00427e5fe4a

SHA1
3bc62e94e5ca38dc1ec73e334c9d11114b118650

SHA256
e984aeae023831bd35c4a62d6d8a110a52fd7ff645d16b2139126827b609a1cc

SHA512
07b61ab94796a454aa6962e003cd805e3df3902ed3f578d22838126a8c00d6898c3f39cd941e9be557d7759e4cb0905c92b6180ce2a5df79ca5e7229d7df38ae

Download Submit
memory/3372-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3372-866-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download