bc1959566c82a4461153bdc49d86b5b5d42df1c836de40dcfff29cba5d14d751

Analysis

max time kernel
120s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/09/2024, 05:12

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General

Target

54bcb7283519e9d6deb17c5e4e459080N.exe
Size

72KB
MD5

54bcb7283519e9d6deb17c5e4e459080
SHA1

bb2b194e3247f746b56a74e28c77121ef2718ab2
SHA256

bc1959566c82a4461153bdc49d86b5b5d42df1c836de40dcfff29cba5d14d751
SHA512

808b3966a3003483172aedf67451a6d95a992ee988fb5ac8fa7ae0efec0c104c3aad236be9a7d32b7085ebae2dd4ae23ac7f235348dcaaaeeac927ab6ff1f035
SSDEEP

1536:CTWn1++PJHJXA/OsIZfzc3/Q8zx4LgLGiSIu2ViSIu2M2v:KQSoFcSG32v

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4657) 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/3664-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000900000002347e-2.dat	upx
behavioral2/files/0x000c0000000220a6-6.dat	upx
behavioral2/memory/3664-901-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.el-gr.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.HttpListener.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\System.Windows.Forms.Primitives.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_KMS_Client_AE-ppd.xrm-ms.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\ReachFramework.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jre-1.8\bin\dt_shmem.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jre-1.8\legal\javafx\jpeg_fx.md.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jre-1.8\bin\lcms.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVIsvApi.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\msix.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.Primitives.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\freebxml.md.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\PresentationCore.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\UIAutomationProvider.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RHeartbeatConfig.xml.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationClient.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Windows.Forms.Design.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-memory-l1-1-0.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Serialization.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jre-1.8\lib\jfxswt.jar.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial4-pl.xrm-ms.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointVL_KMS_Client-ul-oob.xrm-ms.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Retail-pl.xrm-ms.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\FPA_FA000000008\FA000000008.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.sk-sk.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Mail.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\Welcome.html.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\java.policy.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\WindowsBase.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\xalan.md.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.Word.Word.x-none.msi.16.x-none.xml.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_ghost_profile_large.png.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-filesystem-l1-1-0.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalDemoR_BypassTrial180-ppd.xrm-ms.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.ReportingServices.Interfaces.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_ghost_school.png.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\es-ES\TipRes.dll.mui.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.CompilerServices.VisualC.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\PresentationCore.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-console-l1-2-0.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\jopt-simple.md.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jre-1.8\lib\resources.jar.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Client.AddinTelemetry.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Forms.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\PresentationFramework.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\javafx\libffi.md.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\es-MX\tipresx.dll.mui.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.TextWriterTraceListener.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\keypad\keypadbase.xml.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-convert-l1-1-0.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\System.Windows.Input.Manipulations.resources.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\cpprestsdk.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_OEM_Perp-pl.xrm-ms.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\th\msipc.dll.mui.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.VisualBasic.Forms.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jre-1.8\bin\jfxmedia.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\ecc.md.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.dll.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-001F-0C0A-1000-0000000FF1CE.xml.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail-ul-oob.xrm-ms.tmp	54bcb7283519e9d6deb17c5e4e459080N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\TelemetryLog.xltx.tmp	54bcb7283519e9d6deb17c5e4e459080N.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	54bcb7283519e9d6deb17c5e4e459080N.exe

C:\Users\Admin\AppData\Local\Temp\54bcb7283519e9d6deb17c5e4e459080N.exe
"C:\Users\Admin\AppData\Local\Temp\54bcb7283519e9d6deb17c5e4e459080N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3664

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-1-5-21-523280732-2327480845-3730041215-1000\desktop.ini.tmp

Filesize
72KB

MD5
41202f94fa8e6652ee4f3109736d14cf

SHA1
caaf75cbbe752e6abd986173e36eb3bc6ab91f4b

SHA256
102d93acec0051321ffffa2337df4ce16e43489d4e25c93d420f154cf55c1e59

SHA512
7925274bf9f3cc9996402a7082c9efe96053e3f2c3ff17ae992bba608097e854508a740bbda4f7af3257a83797cdd9ce9232f6a21eee3f88d046ac00f878c935

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

Filesize
171KB

MD5
fbb52cbb9a4e977b43a29173aa8efc4d

SHA1
7d6e0ff0d9ac86f58dea37da46bb4832ef72e708

SHA256
50479fe1b93e3b07e6e0d0e5832d94a3eac397f29f2be3440adfa06250465216

SHA512
ff9948153adbc480a2ddee321c973b8792e4a05ab418807adc4633e8bdf496e92dbd2d4fd7b50dea77e9cde67171e251aa16f1b7c8690bcfa26b95347d971c44

Download Submit
memory/3664-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3664-901-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download