f486564239441eeb454c3d4c918df81f7613080220c31b5d1cd495d3c28ba8ae

Analysis

max time kernel
120s
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
01-09-2024 23:10

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General

Target

a2b97584c82c862a25aa76e658a621c0N.exe
Size

29KB
MD5

a2b97584c82c862a25aa76e658a621c0
SHA1

54da3dd6bc7a48b79a989705418efad20da9185e
SHA256

f486564239441eeb454c3d4c918df81f7613080220c31b5d1cd495d3c28ba8ae
SHA512

e83a5e98515dc0a4a1d009ba56412bd6e0b34bfdaba74da529cd53123c066269961ab9ab32cf8c644ff3e07e40ff0770b57148d1347e27684341ce6c70bcbd8b
SSDEEP

768:kBT37CPKKdJJ1EXBwzEXBwdcMcI99ui1xDui1x/:CTW7JJ7T/F/Fz

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4483) 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/4948-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000900000002342d-2.dat	upx
behavioral2/files/0x00040000000228f4-6.dat	upx
behavioral2/memory/4948-874-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\7-Zip\Lang\cy.txt.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\7-Zip\Lang\ga.txt.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-multibyte-l1-1-0.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O16ConsumerPerp_Bypass30-ul-oob.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019VL_MAK_AE-ppd.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-white_scale-80.png.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\7-Zip\7-zip.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ko-KR\tipresx.dll.mui.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\UIAutomationTypes.resources.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O16ConsumerPerp_Bypass30-ppd.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_SubTest-ppd.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-math-l1-1-0.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.DispatchProxy.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\System.Windows.Input.Manipulations.resources.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-stdio-l1-1-0.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_Trial-pl.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_Subscription-ul-oob.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Common Files\System\msadc\msdaprsr.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-interlocked-l1-1-0.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\splash_11-lic.gif.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_KMS_Client_AE-ppd.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-multibyte-l1-1-0.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-black_scale-100.png.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogoSmall.contrast-black_scale-80.png.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\7-Zip\Lang\be.txt.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\7-Zip\Lang\et.txt.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-file-l1-1-0.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Drawing.Common.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\VisualElements\SmallLogo.png.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Retail-ul-phn.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipscat.xml.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\UIAutomationClient.resources.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\ReachFramework.resources.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\Microsoft.VisualBasic.Forms.resources.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\WindowsFormsIntegration.resources.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-file-l2-1-0.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\ssvagent.exe.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_PrepidBypass-ppd.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdVL_MAK-pl.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\7-Zip\Lang\br.txt.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\7-Zip\Lang\is.txt.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\rmic.exe.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteVL_KMS_Client-ul-oob.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019XC2RVL_KMS_ClientC2R-ppd.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Excel.MDXQueryGenerator.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jrunscript.exe.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\offsyml.ttf.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.Serialization.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\UIAutomationClient.resources.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientOSub_eula.txt.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\7-Zip\7-zip.chm.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.Encoding.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\Microsoft.VisualBasic.Forms.resources.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\policy\limited\US_export_policy.jar.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest2-ppd.xrm-ms.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\offsymt.ttf.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\FPA_f3\FA000000003.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\PresentationFramework.resources.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\D3DCompiler_47_cor3.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Internet Explorer\ja-JP\iexplore.exe.mui.tmp	a2b97584c82c862a25aa76e658a621c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\sawindbg.dll.tmp	a2b97584c82c862a25aa76e658a621c0N.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	a2b97584c82c862a25aa76e658a621c0N.exe

C:\Users\Admin\AppData\Local\Temp\a2b97584c82c862a25aa76e658a621c0N.exe
"C:\Users\Admin\AppData\Local\Temp\a2b97584c82c862a25aa76e658a621c0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4948

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-1-5-21-2392887640-1187051047-2909758433-1000\desktop.ini.tmp

Filesize
29KB

MD5
53db58c51aadc49c4523a21a3e2a84d3

SHA1
7a6093249b6c74b63dc2ca74404dafd5c5d792d0

SHA256
1ca38c33bdaa56793bffdc4480b34d132dadc24e93e2f03c2c2758c0ecae1023

SHA512
189c46d9d6ab2e1b875bfee25b04e6686c59b219a92895dc146e52f7691c004a21620e58682e0677da8da9623376d910aae86644a2e8dbd162442acc792021ba

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

Filesize
128KB

MD5
148615608b61b79c61efb925c3ceb67d

SHA1
6717f574ced0528898a38a53087d0c8276cd5827

SHA256
8f33ecb991eaa27a0da53c33f7ed71ee6019dc0dc1a7035c191a77d9dbb14e26

SHA512
a930fc03b18cdd714271e9a97fe5fedfcaa6f80e3c6549ae765f6c96c8bb5f0eb70a98ef5a13fa03aae797202ffff39e1652bbc57ce6141fc1006c89919aa6b3

Download Submit
memory/4948-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4948-874-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download