arkei | 58439dcc59f801b60ab3fda64fd1a5e3ae1a0de95dec6abff06e047603187ea1

Analysis

max time kernel
131s
max time network
102s
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 11:54

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General

Target

1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.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/0x000900000002345a-4.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-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation	YGxtJPNn.exe

Executes dropped EXE 1 IoCs

pid	Process
832	YGxtJPNn.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\officeappguardwin32.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstaller.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jar.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jjs.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\wow_helper.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\uninstall.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Windows Mail\wabmig.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.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Solitaire.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javapackager.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\Java\jdk-1.8\jre\bin\javacpl.exe	YGxtJPNn.exe
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 (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\64BitMAPIBroker.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jstat.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 (x86)\Mozilla Maintenance Service\Uninstall.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\YourPhone.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\FullTrustNotifier.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Smart Tag\SmartTagInstall.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\fmui\fmui.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\onenoteshare.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\Microsoft.WebMediaExtensions.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\serialver.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javacpl.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.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 (x86)\Google\Update\1.3.36.371\GoogleUpdate.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\klist.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\POWERPNT.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\PilotshubApp.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jcmd.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\unpack200.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\java-rmi.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVLP.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerElevatedAppServiceClient.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\7-Zip\Uninstall.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jmap.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\orbd.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\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX40.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoia.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\dotnet\dotnet.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\javaws.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome_proxy.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\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\WinStore.App.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxSpeechToTextOverlay_1.17.29001.0_x64__8wekyb3d8bbwe\SpeechToTextOverlay64-Retail.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\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxAccounts.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\MSOHTMED.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\HideEnable.exe	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\XLICONS.EXE	YGxtJPNn.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection.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
2876	5000	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	1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	YGxtJPNn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5000 wrote to memory of 832	5000	1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.exe	84
PID 5000 wrote to memory of 832	5000	1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.exe	84
PID 5000 wrote to memory of 832	5000	1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.exe	84
PID 832 wrote to memory of 4796	832	YGxtJPNn.exe	86
PID 832 wrote to memory of 4796	832	YGxtJPNn.exe	86
PID 832 wrote to memory of 4796	832	YGxtJPNn.exe	86

C:\Users\Admin\AppData\Local\Temp\1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.exe
"C:\Users\Admin\AppData\Local\Temp\1CB539AE172B68B6116F7017B12A666B3E4FDB86130B10EFFF77C313696A02C4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5000
- 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:832
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\5bef7a7a.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5000 -s 560
  2⤵
  - Program crash
  PID:2876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5000 -ip 5000
1⤵
PID:2944

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\3WWFCFW4\k2[1].rar

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\34114851.exe

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

Download Submit
C:\Users\Admin\AppData\Local\Temp\5bef7a7a.bat

Filesize
191B

MD5
75cf7102306c2eeb5c0f79f639088287

SHA1
3f920c0525fa25c88bc2f3ac2e0b5afef72e1214

SHA256
f1e5b2d9d5fe38b28c12ab9875e1d826c653a572b73b131084ee5e57004e52f5

SHA512
a305dfe9c9cb93fc1dbc35aad1cda823f0dba985acd2a4ade86979ef89855a15f22d7e42a88d31703b4270b9d3dcbe3f0b65f88fc96c692e23615f1e32c28267

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

Filesize
15KB

MD5
f7d21de5c4e81341eccd280c11ddcc9a

SHA1
d4e9ef10d7685d491583c6fa93ae5d9105d815bd

SHA256
4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

SHA512
e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

Download Submit
memory/832-5-0x0000000000230000-0x0000000000239000-memory.dmp

Filesize
36KB

Download
memory/832-46-0x0000000000230000-0x0000000000239000-memory.dmp

Filesize
36KB

Download
memory/5000-0-0x0000000000400000-0x0000000000487000-memory.dmp

Filesize
540KB

Download
memory/5000-49-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/5000-50-0x0000000000560000-0x000000000057F000-memory.dmp

Filesize
124KB

Download
memory/5000-51-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5000-52-0x0000000000400000-0x0000000000487000-memory.dmp

Filesize
540KB

Download
memory/5000-53-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download