arkei | 58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1

Analysis

max time kernel
146s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
25/07/2024, 03:04

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General

Target

58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1.exe
Size

267KB
MD5

78e2c97b3c64d2ca616d66d01182905f
SHA1

b124245b6716dacbbf84e1aede6b2854a5a8e8ca
SHA256

58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1
SHA512

30ba7b76a83a1f9a3eff3d7e536e152957db5670f0907d894b777f42098e5e30bb3d79e13dcf2e6a535626890cda983162202e3e022fd3a59a97039c36fd6b30
SSDEEP

3072:vsKwyFGOjBfvmRGEmRsGtgGqBXtdi6305UKvwUGCH:004iBGRGXOGqkUUC

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/0x000900000002344a-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-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	YGxtJPNn.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	YGxtJPNn.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxTsr.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\TCUI-App.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\tnameserv.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOSYNC.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ShowHelp.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\Addons\OneDriveSetup.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\idlj.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jabswitch.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ONENOTEM.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Mozilla Firefox\uninstall\helper.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Win32Bridge.Server.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jps.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\orbd.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ktab.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\NAMECONTROLSERVER.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOICONS.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateBroker.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javac.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jstatd.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_x64__8wekyb3d8bbwe\WindowsCamera.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\keytool.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\ImagingDevices.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Maps.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SDXHelper.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\Wordconv.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\XboxApp.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\java-rmi.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_x64__8wekyb3d8bbwe\GetHelp.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\rmid.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SkypeSrv\SKYPESERVER.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection64.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Mozilla Firefox\private_browsing.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\Uninstall.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\pack200.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerPythonRedirector.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoadfsb.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\WhatsNew.Store.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoev.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Source Engine\OSE.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\unpack200.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\keytool.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmid.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Cortana.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ssvagent.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate32.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Video.UI.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOUC.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\uninstall.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_x64__8wekyb3d8bbwe\GameBar.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroBroker.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe	YGxtJPNn.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
2916	4056	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	YGxtJPNn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4056 wrote to memory of 2596	4056	58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1.exe	84
PID 4056 wrote to memory of 2596	4056	58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1.exe	84
PID 4056 wrote to memory of 2596	4056	58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1.exe	84
PID 2596 wrote to memory of 2140	2596	YGxtJPNn.exe	86
PID 2596 wrote to memory of 2140	2596	YGxtJPNn.exe	86
PID 2596 wrote to memory of 2140	2596	YGxtJPNn.exe	86

C:\Users\Admin\AppData\Local\Temp\58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1.exe
"C:\Users\Admin\AppData\Local\Temp\58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4056
- C:\Users\Admin\AppData\Local\Temp\YGxtJPNn.exe
  C:\Users\Admin\AppData\Local\Temp\YGxtJPNn.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:2596
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\1cc007cf.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4056 -s 560
  2⤵
  - Program crash
  PID:2916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4056 -ip 4056
1⤵
PID:3028

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\Microsoft\Windows\INetCache\IE\KCRJMNF7\k2[1].rar

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\1cc007cf.bat

Filesize
191B

MD5
19ea6c7d971991421083b968d63ce6d6

SHA1
7688cfa6baac2f2eed921c8121a74327ef74c3c8

SHA256
0fb9e5a526f17c8a382a9e4e7b94b561deee8bfd526320fa800aad9c54ae6cb3

SHA512
45fe4826fa2dae380e6af0129fda4fd5a2594c8f6c0d57675e8da132297433c32378b8f27bc8a7440f733f80d0174a4d3522e39798c4339ddba7c95425a83561

Download Submit
C:\Users\Admin\AppData\Local\Temp\778F4E0C.exe

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

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

Filesize
15KB

MD5
f7d21de5c4e81341eccd280c11ddcc9a

SHA1
d4e9ef10d7685d491583c6fa93ae5d9105d815bd

SHA256
4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

SHA512
e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

Download Submit
memory/2596-4-0x0000000000C60000-0x0000000000C69000-memory.dmp

Filesize
36KB

Download
memory/2596-47-0x0000000000C60000-0x0000000000C69000-memory.dmp

Filesize
36KB

Download
memory/4056-0-0x0000000000400000-0x0000000000487000-memory.dmp

Filesize
540KB

Download
memory/4056-48-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/4056-50-0x0000000000400000-0x0000000000487000-memory.dmp

Filesize
540KB

Download
memory/4056-49-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4056-52-0x0000000000400000-0x0000000000487000-memory.dmp

Filesize
540KB

Download
memory/4056-53-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download