a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0c

Analysis

max time kernel
120s
max time network
91s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 05:46

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General

Target

a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
Size

60KB
MD5

305a3a3058eb3197bbf82a64b8431ae0
SHA1

2b1bc4b2911ee92ff6eb73a684d1bfcf157edef7
SHA256

a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0c
SHA512

3917240645a2acd7ef93f63c40cc0cf14a106092d2953278a3c758474c362da4eb071a6161f0d5587c5253a798b37145a6bd49d9877c0eaa8d494e25bc8f8a4e
SSDEEP

768:kBT37CPKKIm0CAbLg++PJHJzIWD+dVdCYgck5sIZFlzc3/Sg2aDM9uA9DM9uAFIR:CTWn1++PJHJXA/OsIZfzc3/Q8IZaif

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4647) 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/2896-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00080000000234d8-2.dat	upx
behavioral2/files/0x0014000000022913-6.dat	upx
behavioral2/memory/2896-888-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Office16\1033\EXPTOOWS.DLL.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSOHEV.DLL.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\Microsoft.VisualBasic.Forms.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\WindowsFormsIntegration.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\asm.md.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Frosted Glass.eftx.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_OEM_Perp-pl.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Windows.Controls.Ribbon.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\System.Xaml.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Red.xml.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Gill Sans MT.xml.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\NL7MODELS0009.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\zh-changjei.xml.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\WindowsBase.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\PresentationCore.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-ul-oob.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MEDIA\LASER.WAV.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\i640.cab.cat.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\WindowsBase.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power Map Excel Add-in\POWERMAPCLASSIFICATION.DLL.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\ReachFramework.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-runtime-l1-1-0.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Trial-pl.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\SIST02.XSL.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\et\msipc.dll.mui.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019MSDNR_Retail-ppd.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.Specialized.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Console.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\System.Xaml.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\wpfgfx_cor3.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\VisualElements\LogoCanary.png.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\System.Windows.Forms.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Internet Explorer\ja-JP\ieinstal.exe.mui.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_ko.properties.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Client\C2R64.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\PRIVATE_ODBC32.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\ReachFramework.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\jce.jar.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe.config.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\GostTitle.XSL.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail-ppd.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.Compression.ZipFile.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\UIAutomationTypes.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\UIAutomationTypes.resources.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\cmm\PYCC.pf.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Trial-pl.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp6-ul-oob.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSOSVG.DLL.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\uk-UA\TipTsf.dll.mui.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-localization-l1-2-0.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Thread.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ppd.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Trial-pl.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\7-Zip\Lang\gu.txt.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Core.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherVL_MAK-ppd.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Trial-pl.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Retail-ppd.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial3-pl.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\et-EE\tipresx.dll.mui.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.SecureString.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Transactions.dll.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ul-phn.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_SubTrial-ppd.xrm-ms.tmp	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.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	a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe

C:\Users\Admin\AppData\Local\Temp\a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe
"C:\Users\Admin\AppData\Local\Temp\a77f2948ff4f8da394a849cc93609bbb954ab42294b2c5612ec66ae512136d0cN.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2896

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-1-5-21-656926755-4116854191-210765258-1000\desktop.ini.tmp

Filesize
60KB

MD5
a34a0c4613baa4350ccb18a0ea0998c4

SHA1
f81addc11580c0242454f4f59222426e5c43a81a

SHA256
4de2451a6c544a8300011ea41f1c1de27dd917ce50d358abc0b60ac1172cae83

SHA512
b05553f2ad7a466e5dbe85cce6da563d35125671cce65cc774a7de91aa704e40e198aea5b3129d3429f08c1b66a85bd3ecbaa97050b1db81599e294e80fd1f31

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

Filesize
159KB

MD5
e1a15f11ce83fe8e74c24d0f97d35c81

SHA1
f72172ac727a7acc980d8a378ab9e13f4423fb1b

SHA256
9dcb76aaba33d0fe0956c70b6dbff68e4dd0ab7752c584b75ffb905769a2f095

SHA512
7d6c0fb3b6cf79d47c2fd529870f910d308714620f5ac501c7df02571647e0e7ab5e2ffb1c05437a73a5466c3c068edc34affc1e4d079ed0b30df61f67296b9e

Download Submit
memory/2896-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2896-888-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download