arkei | c634d3b81cf3991d24b037fdb80bacfb576216c3768149432b3e799583ef7b21

Analysis

max time kernel
143s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
24-07-2024 16:46

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General

Target

7E0879F28322430C582D4E54EC0D91FB19E0471B43CD460D30307FA6ACF0A385.exe
Size

281KB
MD5

a131f7c0c6109b3d701767b24a1ec9b8
SHA1

2d42e6211039255898af5606ce8f7c60b31782de
SHA256

c634d3b81cf3991d24b037fdb80bacfb576216c3768149432b3e799583ef7b21
SHA512

a7724856692645bf37c3504771895cda1d75e9d09a9b15d923e0bd5aa323c9949ff5fe790724eb89b4cdeb3631688b5d07edb2d2bdbb2ef6462ac72cebd001fd
SSDEEP

6144:8oTJaMlWeC/iKbHiiq1YmNin91Izx2KQcVWMo4:8uzlWeC/iKbfeSnox7

Score

10^/10

arkei default aspackv2 discovery stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

coin-file-file-19.com/tratata.php

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x00090000000234bd-3.dat	aspack_v212_v242

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	brTOGrD.exe

Executes dropped EXE 1 IoCs

pid	Process
4780	brTOGrD.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleCrashHandler64.exe	brTOGrD.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateComRegisterShell64.exe	brTOGrD.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\keytool.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\misc.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\codecpacks.heif.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Time.exe	brTOGrD.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\LogTransport2.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.106\Installer\chrmstp.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\java-rmi.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\java.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\policytool.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\tnameserv.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javacpl.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxAccounts.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\3DViewer.exe	brTOGrD.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrServicesUpdater.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jar.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\ktab.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\unpack200.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\klist.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\onenoteim.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_x64__8wekyb3d8bbwe\GameBar.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmic.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\javacpl.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javaw.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jp2launcher.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Mozilla Firefox\minidump-analyzer.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.106\elevation_service.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.106\Installer\setup.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\klist.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\AppSharingHookController.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\onenoteshare.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxTsr.exe	brTOGrD.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateCore.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe	brTOGrD.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\reader_sl.exe	brTOGrD.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateOnDemand.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.106\notification_helper.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\kinit.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\javaws.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SkypeSrv\SKYPESERVER.EXE	brTOGrD.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\Uninstall.exe	brTOGrD.exe
File opened for modification	C:\Program Files\dotnet\dotnet.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jcmd.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\rmid.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOSREC.EXE	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\orbd.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\kinit.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX45.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.106\chrome_pwa_launcher.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Maps.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jsadebugd.exe	brTOGrD.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ktab.exe	brTOGrD.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc.exe	brTOGrD.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\WhatsNew.Store.exe	brTOGrD.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3052	1500	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 3 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7E0879F28322430C582D4E54EC0D91FB19E0471B43CD460D30307FA6ACF0A385.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	brTOGrD.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1500 wrote to memory of 4780	1500	7E0879F28322430C582D4E54EC0D91FB19E0471B43CD460D30307FA6ACF0A385.exe	84
PID 1500 wrote to memory of 4780	1500	7E0879F28322430C582D4E54EC0D91FB19E0471B43CD460D30307FA6ACF0A385.exe	84
PID 1500 wrote to memory of 4780	1500	7E0879F28322430C582D4E54EC0D91FB19E0471B43CD460D30307FA6ACF0A385.exe	84
PID 4780 wrote to memory of 1556	4780	brTOGrD.exe	91
PID 4780 wrote to memory of 1556	4780	brTOGrD.exe	91
PID 4780 wrote to memory of 1556	4780	brTOGrD.exe	91

C:\Users\Admin\AppData\Local\Temp\7E0879F28322430C582D4E54EC0D91FB19E0471B43CD460D30307FA6ACF0A385.exe
"C:\Users\Admin\AppData\Local\Temp\7E0879F28322430C582D4E54EC0D91FB19E0471B43CD460D30307FA6ACF0A385.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1500
- C:\Users\Admin\AppData\Local\Temp\brTOGrD.exe
  C:\Users\Admin\AppData\Local\Temp\brTOGrD.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4780
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\241f3182.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1500 -s 560
  2⤵
  - Program crash
  PID:3052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1500 -ip 1500
1⤵
PID:3804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\241f3182.bat

Filesize
189B

MD5
8b4d5e35fb66c435a01df198e102abab

SHA1
20022fea23cb67c1453b2b5277da9beccd08ae7f

SHA256
5c91ec0d5a512358343a4d6da56edcf290d263479134ee091bed3ffea5c4196c

SHA512
897140ac2e1660edf4ea840091739760651563802c0411903575eb3e59d978f33f98b1a88c6998810779d814d2874e1b4db8c57f4f83b6bb6a5350ee66be97d3

Download Submit
C:\Users\Admin\AppData\Local\Temp\brTOGrD.exe

Filesize
15KB

MD5
f7d21de5c4e81341eccd280c11ddcc9a

SHA1
d4e9ef10d7685d491583c6fa93ae5d9105d815bd

SHA256
4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

SHA512
e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

Download Submit
memory/1500-0-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/1500-10-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1500-9-0x0000000000620000-0x000000000063F000-memory.dmp

Filesize
124KB

Download
memory/1500-8-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/1500-17-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/1500-18-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4780-5-0x0000000000E30000-0x0000000000E39000-memory.dmp

Filesize
36KB

Download
memory/4780-15-0x0000000000E30000-0x0000000000E39000-memory.dmp

Filesize
36KB

Download