a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bc

Analysis

max time kernel
120s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2024, 05:08

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General

Target

a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
Size

37KB
MD5

d512db84ed9537a525c01463b20d9d30
SHA1

1418fd538100664395c85e22348a3453579f03db
SHA256

a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bc
SHA512

4962e9a4c998c494534a15be703048b6f8d25b82dda273cb8bca9999f956bfff005aa97842cfad4c13286b090c0b9c26924ca564b9b1746543423f2826bf8e94
SSDEEP

768:kBT37CPKKdJJTU3U2lRtJfOn33EskmKs333EskmKsS:CTW7JJTU3UytJfOEfmKjfmKx

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4689) 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/3480-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x0009000000023476-2.dat	upx
behavioral2/files/0x000f000000022902-6.dat	upx
behavioral2/memory/3480-1011-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jdk-1.8\jre\lib\management-agent.jar.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\legal\javafx\libffi.md.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\icu.md.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Retail-ul-phn.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\en-US.pak.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jabswitch.exe.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\cryptix.md.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\jsse.jar.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherVL_KMS_Client-ul-oob.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.scale-80.png.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\vstoee100.tlb.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\jfr.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jre-1.8\lib\ext\zipfs.jar.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Trial-ul-oob.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipschs.xml.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Windows.Forms.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\UIAutomationTypes.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherVL_MAK-pl.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-errorhandling-l1-1-0.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.PowerView.PowerView.x-none.msi.16.x-none.xml.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Trial-ppd.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\System.Windows.Forms.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Internet Explorer\ja-JP\iexplore.exe.mui.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-synch-l1-2-0.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jdeps.exe.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Trial2-ppd.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Retail-ppd.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MEDIA\CHIMES.WAV.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-file-l2-1-0.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\plugin2\vcruntime140_1.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\sunmscapi.jar.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jre-1.8\legal\javafx\libffi.md.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\Microsoft.VisualBasic.Forms.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\server\classes.jsa.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_OEM_Perp-ul-phn.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\WindowsFormsIntegration.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSOADFPS.DLL.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\NPSPWRAP.DLL.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\System.Windows.Forms.Primitives.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\wpfgfx_cor3.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\WindowsFormsIntegration.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\mesa3d.md.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_Trial-ul-oob.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_PrepidBypass-ppd.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSOSREC.EXE.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.NameResolution.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\ar.pak.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-ul.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp-pl.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.WebSockets.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\UIAutomationClient.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\UIAutomationClientSideProviders.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_MAK_AE-ul-phn.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.XDocument.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\System.Windows.Controls.Ribbon.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_OEM_Perp-ppd.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\System.Windows.Controls.Ribbon.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\System.Windows.Controls.Ribbon.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\System.Windows.Forms.Design.resources.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Retail-ul-phn.xrm-ms.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base_jpn.xml.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main.xml.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.Tasks.Extensions.dll.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\Microsoft.WindowsDesktop.App.deps.json.tmp	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.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	a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe

C:\Users\Admin\AppData\Local\Temp\a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe
"C:\Users\Admin\AppData\Local\Temp\a9281ee51a431c4ed5aeb941fe99cff914feed2a170d118bb2f92bed4517a9bcN.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3480

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-1-5-21-945322488-2060912225-3527527000-1000\desktop.ini.tmp

Filesize
37KB

MD5
4581ad55c6d3228d5273ed3c9385db24

SHA1
ce23a184c61e8cd54a2e3a67c5007836f234381d

SHA256
14885a900b345ac4cea1cf47f5c2303d48b3c9aa869d4a191dbaebfcc82744b6

SHA512
05049f0e993cd272cb5862536391e317e46f3ff7cfc4b8fece4d9a2ac687655f3a6ca44c5c37e9f506edc7e9b937d3cddca01a44492492070fe7c92ccdff115b

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

Filesize
136KB

MD5
e985f4b33fad05bb453686fcd7d9b4ca

SHA1
5fc29cb03f98c95d88069a04858f684a7e0147ff

SHA256
215ad5feac38f54e7f361b4783daee90ba38f8c4403647cba5fe1e0008750176

SHA512
a35339cc1bfa92863d6169f59af00c35f0a15f12c7c020eb65159162bf083041faec942a0a8ce296ba8af6c1bedd094e5bb9934e43a811d4de376300059ff271

Download Submit
memory/3480-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3480-1011-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download