948a0dd824a5946e7e4038ef5368fa0ee0b1f9130ec80e4d3737494038f8f905

Analysis

max time kernel
120s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/08/2024, 11:44

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General

Target

55aa33456cfa8107c23b8a6905e1f6f0N.exe
Size

35KB
MD5

55aa33456cfa8107c23b8a6905e1f6f0
SHA1

134ad427cd5989007cb61f176164f9da6c9bb7ba
SHA256

948a0dd824a5946e7e4038ef5368fa0ee0b1f9130ec80e4d3737494038f8f905
SHA512

1281ea12bf9fec4d6deb4475ad4444b2482909fdb99f1fb9d4a676f529f937156bded090340ab227026daf57c13c22c6c258d6d1d995d8afff0a475c2a34ba1f
SSDEEP

768:kBT37CPKKdJJcbQbf1Oti1JGBQOOiQJhATNyHF/MF/6m0mF09Ub9ULa+az:CTW7JJZENTNyl2Sm0mSWbWLa+az

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4645) 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/2296-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x0008000000023464-2.dat	upx
behavioral2/files/0x0014000000022913-6.dat	upx
behavioral2/memory/2296-901-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\nl\msipc.dll.mui.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.CSharp.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.WebHeaderCollection.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Client\AppvIsvSubsystems32.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusMSDNR_Retail-pl.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\7-Zip\Lang\ext.txt.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\ext\nashorn.jar.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Subscription2-pl.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-runtime-l1-1-0.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Diagnostics.PerformanceCounter.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\vcruntime140.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019XC2RVL_KMS_ClientC2R-ppd.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTest-ul-oob.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.contrast-black_scale-180.png.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\fr-FR\oledb32r.dll.mui.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\PresentationUI.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\WindowsBase.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\PresentationCore.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Common Files\System\msadc\fr-FR\msadcor.dll.mui.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.FileSystem.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Grace-ul-oob.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\WORD_WHATSNEW.XML.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\zipfs.jar.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\ssvagent.exe.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Office.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-environment-l1-1-0.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\tzmappings.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\WordVL_KMS_Client-ppd.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSOSREC.EXE.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-file-l1-2-0.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.Extensions.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\UIAutomationProvider.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\PresentationFramework.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgeCalls.h.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\msproof7.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Collections.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\UIAutomationClientSideProviders.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\System.Windows.Input.Manipulations.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\MEIPreload\preloaded_data.pb.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_KMS_Client-ul.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Trial-ppd.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\mscordbi.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX40.exe.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp3-ul-phn.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework-SystemXml.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\UIAutomationClient.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\PresentationUI.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\images\cursors\win32_MoveNoDrop32x32.gif.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Common Files\System\msadc\msadds.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\StreamServer.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\WindowsBase.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\javafx\libxml2.md.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\management-agent.jar.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\uk-UA\TipTsf.dll.mui.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.InteropServices.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.XmlDocument.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.Word.Word.x-none.msi.16.x-none.xml.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Retail-ul-phn.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Mail.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\PresentationFramework.resources.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Trial-ppd.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Spatial.NetFX35.dll.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Trial-ul-oob.xrm-ms.tmp	55aa33456cfa8107c23b8a6905e1f6f0N.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	55aa33456cfa8107c23b8a6905e1f6f0N.exe

C:\Users\Admin\AppData\Local\Temp\55aa33456cfa8107c23b8a6905e1f6f0N.exe
"C:\Users\Admin\AppData\Local\Temp\55aa33456cfa8107c23b8a6905e1f6f0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2296

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-1-5-21-656926755-4116854191-210765258-1000\desktop.ini.tmp

Filesize
36KB

MD5
f7e50c664e4bb05772089914662ca033

SHA1
9ce84a4e6536bb168282410d0db83395e479b736

SHA256
81ac3a87e7404433856d66ed3af594b8716e96f38fbb5e1dd17f040ee5701f45

SHA512
4aaf93b6361feab453a41d845644b0da8e4f6db38d0a31247c2b17e772e9ac0e7b4ca844072f503d78603fde61f0c33e02d4ccc8890c8f350050d1d488b897bd

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

Filesize
135KB

MD5
3a16638f41f89e95a929aeba8dd4f8bf

SHA1
40f92f6d4e2b61ba2904af685e2ef27adf4731f4

SHA256
bb57c865d0ac873017c654ad807361c7fab7e657529a4b45ee17a47e9ca3ff9c

SHA512
01465f93bce97af8f807884dc2af3866aacda20a9dc18986be7e415449c48844539986c3493354928e82c720e17d850c297fc56ecb06a6d3380a3282328cf5ca

Download Submit
memory/2296-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2296-901-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download