ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27-07-2024 05:38

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General

Target

ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
Size

50KB
MD5

bdf2168c6fd15c38a1c2ceec48edf560
SHA1

5527eaa6a52d179c7ce1aab6dfdacdcdc339419e
SHA256

ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc
SHA512

79ac555fabfd747e458fb1b08c9f18ec4ba653c7047144758cced7b83bd8835e0b5bf72b602d31b92669a29bf3cfdc87af45189a1d04f6ae39b4452543326820
SSDEEP

768:kBT37CPKK1EXBwzEXBw3sgQw58eGkz2rcuesgQw58eGkz2rcuX9km9k/fxRfxykf:CTW8OmO/fxRfxykK3ZUkK3ZKYn

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (3973) 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/2820-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00080000000234a8-2.dat	upx
behavioral2/files/0x0014000000022909-6.dat	upx
behavioral2/memory/2820-454-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\ado\ja-JP\msader15.dll.mui.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\System\Ole DB\en-US\sqloledb.rll.mui.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Java\jdk-1.8\include\jvmticmlr.h.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial1-pl.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription5-pl.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\ClientCapabilities.json.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.Specialized.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.Win32.Primitives.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\UIAutomationClientSideProviders.resources.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Java\jre-1.8\bin\prism_sw.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Grace-ul-oob.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\System\es-ES\wab32res.dll.mui.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Mail.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.Security.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jconsole.exe.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_Subscription-pl.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail-ul-oob.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.Win32.Registry.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PresentationFramework-SystemCore.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Java\jre-1.8\bin\jp2ssv.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_SubTrial-pl.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardVL_KMS_Client-ppd.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\msvcr120.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\System\msadc\msadcer.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.WebHeaderCollection.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp4-pl.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\UIAutomationProvider.resources.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\jopt-simple.md.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTest-ppd.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\7-Zip\Lang\tg.txt.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.fi-fi.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\DirectWriteForwarder.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\MergeRead.rtf.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019VL_MAK_AE-ppd.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\ShapeCollector.exe.mui.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\lt-LT\tipresx.dll.mui.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\PresentationFramework.resources.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdR_Retail-ppd.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\System\msadc\msdaprst.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemXmlLinq.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-ppd.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail2-ul-oob.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\da-DK\tipresx.dll.mui.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\de-DE\InputPersonalization.exe.mui.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.InteropServices.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_OEM_Perp-ul-phn.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Blue.xml.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Tasks.Parallel.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\System.Windows.Forms.Primitives.resources.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Windows.Extensions.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-utility-l1-1-0.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-string-l1-1-0.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\dom.md.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\cryptix.md.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial5-pl.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_OEM_Perp-ppd.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\offreg.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.XmlSerializer.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.NetworkInformation.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\System.Windows.Input.Manipulations.resources.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework.Royale.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\ReachFramework.resources.dll.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail2-ppd.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Subscription2-pl.xrm-ms.tmp	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.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	ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe

C:\Users\Admin\AppData\Local\Temp\ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe
"C:\Users\Admin\AppData\Local\Temp\ef13a2764d5bda00914d81302c97f304a71518feb20523c18660ca3160eedabc.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2820

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-1-5-21-384068567-2943195810-3631207890-1000\desktop.ini.tmp

Filesize
50KB

MD5
2de4d8e40f6699c2467f44798eb15b57

SHA1
000ef09ff4b7a80ab3bfe9a4f2173015508ef030

SHA256
1deb8ae6ca2febf9b6b8893f9460df9df127f6cb6568f9366ce0d979065bf11b

SHA512
d673a8f184936b6f3b123aeaeb34c50a690f3380612473296e56ab2781c210e09582f710d0aced77c55c7b53a90ab746cac391055bc672e1a2b6bc22ed0926ca

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

Filesize
149KB

MD5
b4ba1f72e0b95bd132877ff338b0980b

SHA1
9594426f31c29066e1934fee3f9785ce66cebacf

SHA256
54fc42413fbb4f108de2cee43f4e73b7c4788856427f43c5f8296997d881da40

SHA512
fa0964afd93c1526253e2ade4a3a6ab6aa24032a4cbc0dcb9178856cf7076681cfa68cf5ce0f8a8cc6c833855ced36b472d8b3c8a03e85e6d41511030b082648

Download Submit
memory/2820-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2820-454-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download