7cfa364cf3d2beba5200458fbe90bab03959bec1f871141e99b95542c015f25c

Analysis

max time kernel
120s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
26/07/2024, 19:40

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General

Target

4a057e40fddef2b43b0e24b405824e00N.exe
Size

69KB
MD5

4a057e40fddef2b43b0e24b405824e00
SHA1

ecfab3d00c90feb1c1658c77924e0c2f65d1559f
SHA256

7cfa364cf3d2beba5200458fbe90bab03959bec1f871141e99b95542c015f25c
SHA512

bb6612913e0ab6d827b8ec74cba9dbecdcc8d8c1f0563c65b965f32625014ba316185b85458da97f619ee8b1ee707b7822ba1df958c60d9d927c732cbb2e073e
SSDEEP

1536:CTWn1++PJHJXA/OsIZfzc3/Q8zxtdxcgMCYwvJvg:KQSo4dxaT

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (3986) 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/632-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x0009000000023469-2.dat	upx
behavioral2/files/0x0014000000022932-6.dat	upx
behavioral2/memory/632-838-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Formats.Asn1.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.Linq.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\7-Zip\Lang\mr.txt.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework.Aero.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\relaxngcc.md.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial3-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\ucrtbase.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\7-Zip\Lang\id.txt.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVCatalog.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\System.Windows.Forms.Design.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\WindowsBase.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProDemoR_BypassTrial180-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp4-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\7-Zip\7z.sfx.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\System.Xaml.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\PresentationCore.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-bridge-office.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jre-1.8\lib\tzdb.dat.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Retail-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.WebHeaderCollection.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\UIAutomationClient.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\PresentationFramework.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\npt.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Serialization.Json.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Text.Encodings.Web.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jre-1.8\lib\ext\cldrdata.jar.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-util-l1-1-0.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\colorimaging.md.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.Encoding.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Data.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Retail-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Reflection.DispatchProxy.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\javacpl.cpl.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaBrightDemiBold.ttf.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jre-1.8\lib\cmm\sRGB.pf.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\sk-SK\tipresx.dll.mui.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ServiceProcess.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Grace-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription2-pl.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\LyncBasic_Eula.txt.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\7-Zip\Lang\de.txt.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.Sockets.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\System.Xaml.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jjs.exe.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\UIAutomationClient.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019DemoR_BypassTrial180-ppd.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial5-ppd.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\PresentationUI.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O16EnterpriseVL_Bypass30-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_Subscription-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Console.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\System.Xaml.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Windows.Input.Manipulations.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\UIAutomationClient.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription1-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription5-ul-oob.xrm-ms.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.AppContext.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Core.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\System.Windows.Input.Manipulations.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jhat.exe.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\Microsoft.VisualBasic.Forms.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\PresentationFramework.resources.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-handle-l1-1-0.dll.tmp	4a057e40fddef2b43b0e24b405824e00N.exe
File created	C:\Program Files\Java\jre-1.8\bin\jjs.exe.tmp	4a057e40fddef2b43b0e24b405824e00N.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	4a057e40fddef2b43b0e24b405824e00N.exe

C:\Users\Admin\AppData\Local\Temp\4a057e40fddef2b43b0e24b405824e00N.exe
"C:\Users\Admin\AppData\Local\Temp\4a057e40fddef2b43b0e24b405824e00N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:632

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-1-5-21-1176886754-713327781-2233697964-1000\desktop.ini.tmp

Filesize
69KB

MD5
fec33d8b608facd328b25d06ac811f81

SHA1
9e944df927ab09b0154dc98aaccfe656a1d55203

SHA256
9eb4ad27adea9ab67df948eabf0663dc2c128da6afb2c85605ca26773471d038

SHA512
a6a89b2e6d9982f63eead251d5f563fc11512ce53a06dc311c6857d05f758acde5131538672a1c63ea51cce3e39b4ce099f21c9e4ce879b37a4829c6e0bb91d5

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

Filesize
168KB

MD5
cf21f278ee341a72f0cce4891aab78d5

SHA1
6aa8b6fa16a84ef5edd2678e99e530483c720a1e

SHA256
bec1a5f815e85b01cb60c1129d3824bfe23cbda113d1eb5c381ac1a6920b6986

SHA512
5a402bbec35f0db6e15cd6864eb2b6aa42b0fa86dbb0004cf92d688d8bd09326c1f475aa3a899f935fcd00a9e2b124bc69e0f06035e2be2524bfee7597268bc6

Download Submit
memory/632-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/632-838-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download