87e3f987a0bc66a440deea75c9f524ea9e73057d3e4deb5a02da18f5585114e6

Analysis

max time kernel
120s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2024, 20:24

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General

Target

bcb55644dc393afc3be3206b0e244e30N.exe
Size

644KB
MD5

bcb55644dc393afc3be3206b0e244e30
SHA1

c91d20285b3a789bb1b19d7e6a114e83bf41ec1b
SHA256

87e3f987a0bc66a440deea75c9f524ea9e73057d3e4deb5a02da18f5585114e6
SHA512

99fbc268354cee4bc4fe11c7ce258a37b2b0586471c8217154f670d9ea64967c78021a928c34a7225735ca3b8d8bf4983e8e49e88ea4173bfe57426f757430dc
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJcbQbf1Oti1JGBQOOiQJhATBApwp133EskmKK:V7Zf/FAxTWoJJZENTBAOIfmKJfmKk

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (2378) 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/3728-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000900000002346d-2.dat	upx
behavioral2/files/0x0014000000022912-6.dat	upx
behavioral2/memory/3728-436-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.Tasks.Extensions.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Text.Encodings.Web.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\WindowsBase.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\Microsoft.VisualBasic.Forms.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jconsole.exe.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\plugin2\npjp2.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\trusted.libraries.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\sr.pak.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\optimization_guide_internal.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-file-l1-1-0.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVCatalog.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Overlapped.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.Thread.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Windows.Input.Manipulations.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationClient.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Xaml.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\DebugStop.xhtml.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Forms.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\System.Xaml.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ReachFramework.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\WindowsFormsIntegration.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\ktab.exe.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.sk-sk.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\tipresx.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Linq.Expressions.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\WindowsFormsIntegration.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\vi.pak.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-file-l1-1-0.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\xalan.md.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.WebHeaderCollection.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\PresentationFramework.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\WindowsFormsIntegration.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\VisualElements\Logo.png.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\management.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\lib\ant-javafx.jar.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-utility-l1-1-0.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Common Files\System\Ole DB\sqloledb.rll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Serialization.Formatters.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\UIAutomationProvider.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\PresentationFramework.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework.Classic.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\VisualElements\SmallLogoDev.png.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.bg-bg.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ComponentModel.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.VisualBasic.Core.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\UIAutomationClientSideProviders.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Design.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\PresentationFramework.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\VisualElements\LogoCanary.png.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-profile-l1-1-0.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\Microsoft.Win32.Registry.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\PresentationCore.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\ReachFramework.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\7-Zip\7z.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\micaut.dll.mui.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\symbols\ea-sym.xml.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\System.Windows.Forms.Design.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\UIAutomationProvider.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.Pipes.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationProvider.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\Microsoft.VisualBasic.Forms.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\System.Windows.Forms.Primitives.resources.dll.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jsadebugd.exe.tmp	bcb55644dc393afc3be3206b0e244e30N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\uk-UA\TipTsf.dll.mui.tmp	bcb55644dc393afc3be3206b0e244e30N.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	bcb55644dc393afc3be3206b0e244e30N.exe

C:\Users\Admin\AppData\Local\Temp\bcb55644dc393afc3be3206b0e244e30N.exe
"C:\Users\Admin\AppData\Local\Temp\bcb55644dc393afc3be3206b0e244e30N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3728

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-1-5-21-786284298-625481688-3210388970-1000\desktop.ini.tmp

Filesize
644KB

MD5
22cc905fdc4c8459fa1c5270c0ce25ac

SHA1
4ba53a60ec75130521672382a6dceb325b18e6b9

SHA256
a1a0ce2c67d485b29580c63464a285a8ea0a86ea2b1e6c279520a6c1364857fb

SHA512
aef8422d0144cf4da9f448cfc214e0272d72bda2183858fdf79c2d75a2c09f2b95346d763b827393beebaeadcd2c7c12ecaaf6edd624f2ce922c15984c376a89

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

Filesize
743KB

MD5
570d9d46b5848ac9fcd52dc1785c838b

SHA1
ee430b62dabb05dd572042228423ccbe253e1f5f

SHA256
5270791541ddd643b794f813df5b20d2380b32e9a63e6bee26630d5d9c4330bd

SHA512
b386d7d9c55ffededb1e50674285b1e4a9d3e0dd7c9d53df8aa7624cc3eb4c5baf4c6a94d6608b4e1ec3a0a6726d245175569a465e74b32248e47d7199f2e5c4

Download Submit
memory/3728-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3728-436-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download