b5b56634537106858b2bced859da3d71afeeb5b9401dea6907c1f76f763c1c04

Analysis

max time kernel
120s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/08/2024, 19:16

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General

Target

04ba92c4ddd031dc5903f0342ef7ea00N.exe
Size

76KB
MD5

04ba92c4ddd031dc5903f0342ef7ea00
SHA1

1f61cf24455f19d210c862578488b802c0cc304d
SHA256

b5b56634537106858b2bced859da3d71afeeb5b9401dea6907c1f76f763c1c04
SHA512

dfc8c39c18bb72ad415290806c7105da2742dc3c0aeb6eeca39dfb0b593f03ed5a85a0b44cf59bf6c72c7f361f214e4040e45654c95d5087c3992a44ad749eb9
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJcbQbf1Oti1JGBQOOiQJhATNy2/mepYXwILQC:V7Zf/FAxTWoJJZENTNyavf73tQqu

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4360) 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/4500-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0009000000023564-2.dat	upx
behavioral2/files/0x000600000001690a-6.dat	upx
behavioral2/memory/4500-808-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription3-pl.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_OEM_Perp-ul-phn.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\10.0\1033\VSTOLoaderUI.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.Requests.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_OEM_Perp-pl.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription2-pl.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Common Files\Services\verisign.bmp.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.WindowsDesktop.App.deps.json.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\java.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\7-Zip\7zCon.sfx.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\mscordaccore.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientOSub_eula.txt.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\ja-jp.xml.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jre-1.8\lib\deploy\messages_ja.properties.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-ul-oob.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\UIAutomationClient.resources.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\System.Windows.Forms.Design.resources.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\WindowsFormsIntegration.resources.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskpred\oskpredbase.xml.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Principal.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jre-1.8\bin\dt_socket.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\7-Zip\Lang\ku-ckb.txt.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Forms.Primitives.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\prism_d3d.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jre-1.8\lib\meta-index.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Security.Permissions.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\PresentationCore.resources.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-001F-0C0A-1000-0000000FF1CE.xml.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Memory.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Document.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\BORDERS\MSART3.BDR.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Trial-pl.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest1-pl.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp4-ul-phn.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-bridge-office.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\System.Windows.Input.Manipulations.resources.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Trial-ul-oob.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\TellMeOneNote.nrr.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\BIPLAT.DLL.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\UIAutomationClient.resources.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Common Files\System\msadc\en-US\msadcor.dll.mui.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\jcup.md.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_ViewOnly_ZeroGrace-ul-oob.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\STSLISTI.DLL.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\sqmapi_x64.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-file-l2-1-0.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\j2pcsc.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\java.policy.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaSansRegular.ttf.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-sysinfo-l1-1-0.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Common Files\System\ado\msadox.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Internet Explorer\hmmapi.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\sql120.xsl.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2R64.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\VisualElements\SmallLogo.png.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\bcel.md.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherVL_KMS_Client-ppd.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_Subscription-ppd.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\System.Windows.Forms.resources.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\System.Windows.Controls.Ribbon.resources.dll.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial4-pl.xrm-ms.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientLangPack2019_eula.txt.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientSub_M365_eula.txt.tmp	04ba92c4ddd031dc5903f0342ef7ea00N.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	04ba92c4ddd031dc5903f0342ef7ea00N.exe

C:\Users\Admin\AppData\Local\Temp\04ba92c4ddd031dc5903f0342ef7ea00N.exe
"C:\Users\Admin\AppData\Local\Temp\04ba92c4ddd031dc5903f0342ef7ea00N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4500

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4152,i,8548254608087149642,10333768245962368401,262144 --variations-seed-version --mojo-platform-channel-handle=4300 /prefetch:8
1⤵
PID:3640

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-1-5-21-2170637797-568393320-3232933035-1000\desktop.ini.tmp

Filesize
77KB

MD5
78ee910fb83350fad2815d41ef9f603b

SHA1
f81ebcee2089af0b165e4b62516438439f7e1f15

SHA256
7e404ec08104c346a9aa2b10afb6977c25081afad5e232d634db5f7db3ae68a0

SHA512
169239eae50684f50015edd2e374ce807e19654c9d5869593da1fa1b1f3a384a1b4a1cacc7319bf09f84d159128ac96fd3bf5f14e2279ed6011fdd77a024c3d3

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

Filesize
189KB

MD5
e49c7f0471d478991f3f8d799f20afa5

SHA1
6a796c87bd659df7411d9fc76ab4831082954887

SHA256
58ea97ee38db6c87b14fbfff875aebed46b503f424da122dad0b23fc46f1b15d

SHA512
2af114cdf586a8e431d8728e8b935079b04fef534da52dd3bafcab60ca1dd0fa52e638b41e5b73cbee66f5ee76ba73bd4acab08280dfc9f5ebe279309e44e772

Download Submit
memory/4500-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4500-808-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download