systembc | 9b2d89057155cd1cec731e83a0946cf95772134f0069da737fa30935b5a9b325

Analysis

max time kernel
117s
max time network
136s
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 23:48

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General

Target

6cc414140f13caf6ab67abd78c488ac0N.exe
Size

243KB
MD5

6cc414140f13caf6ab67abd78c488ac0
SHA1

d90819c58bac99abdc37e394597acdef85dd36c4
SHA256

9b2d89057155cd1cec731e83a0946cf95772134f0069da737fa30935b5a9b325
SHA512

75133bf1e666e17d3d18e4953b8e62bcb87454157102f1825ba972feec0801901fa4bdaa0ba88823839ad7422622e274a39c4a183c4a0a7f00a8432be02e77db
SSDEEP

1536:oju9HIaQrom6hbDAdqGpdMJ2x5f/h81lM5nB7OcIGGjz5NTJ1zc4aZGCq2iW7z:ojMHIPSbx7+8n4gc1Gn5N91dOGCH

Score

10^/10

systembc aspackv2 discovery trojan

Malware Config

Extracted

Family

systembc

31.44.185.6:4001

31.44.185.11:4001

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000800000002343c-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-1-5-21-1176886754-713327781-2233697964-1000\Control Panel\International\Geo\Nation	uzVsMx.exe

Executes dropped EXE 3 IoCs

pid	Process
1964	uzVsMx.exe
336	prcu.exe
4812	uzVsMx.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\PilotshubApp.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\klist.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Smart Tag\SmartTagInstall.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\View3D.ResourceResolver.exe	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Google\Update\Download\{8A69D345-D564-463C-AFF1-A69D9E530F96}\123.0.6312.106\chrome_installer.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javacpl.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Cortana.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\codecpacks.heif.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javaw.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate32.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoev.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SkypeSrv\SKYPESERVER.EXE	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wabmig.exe	uzVsMx.exe
File opened for modification	C:\Program Files\7-Zip\7zG.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmiregistry.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\tnameserv.exe	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\default-browser-agent.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerElevatedAppServiceClient.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Maps.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\idlj.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jrunscript.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\tnameserv.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\PaintStudio.View.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\SoundRec.exe	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jjs.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SETLANG.EXE	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\Microsoft.Msn.Weather.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_x64__8wekyb3d8bbwe\GameBar.exe	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe	uzVsMx.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\kinit.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Windows Mail\wabmig.exe	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\32BitMAPIBroker.exe	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\64BitMAPIBroker.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstaller.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\TCUI-App.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.106\notification_helper.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\schemagen.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\pack200.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Windows Security\BrowserCore\BrowserCore.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerPythonRedirector.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\servertool.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\unpack200.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\DATABASECOMPARE.EXE	uzVsMx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\java.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\pingsender.exe	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AdobeCollabSync.exe	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\FullTrustNotifier.exe	uzVsMx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\wow_helper.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jar.exe	uzVsMx.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxIdentityProvider_12.50.6001.0_x64__8wekyb3d8bbwe\XboxIdp.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javapackager.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jhat.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\OLicenseHeartbeat.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.106\Installer\chrmstp.exe	uzVsMx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOSREC.EXE	uzVsMx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	uzVsMx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_11811.1001.18.0_x64__8wekyb3d8bbwe\StoreExperienceHost.exe	uzVsMx.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\prcu.job	6cc414140f13caf6ab67abd78c488ac0N.exe
File opened for modification	C:\Windows\Tasks\prcu.job	6cc414140f13caf6ab67abd78c488ac0N.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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	6cc414140f13caf6ab67abd78c488ac0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uzVsMx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	prcu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uzVsMx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	uzVsMx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	uzVsMx.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	uzVsMx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	uzVsMx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	uzVsMx.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3308	6cc414140f13caf6ab67abd78c488ac0N.exe
3308	6cc414140f13caf6ab67abd78c488ac0N.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3308 wrote to memory of 1964	3308	6cc414140f13caf6ab67abd78c488ac0N.exe	84
PID 3308 wrote to memory of 1964	3308	6cc414140f13caf6ab67abd78c488ac0N.exe	84
PID 3308 wrote to memory of 1964	3308	6cc414140f13caf6ab67abd78c488ac0N.exe	84
PID 1964 wrote to memory of 2076	1964	uzVsMx.exe	92
PID 1964 wrote to memory of 2076	1964	uzVsMx.exe	92
PID 1964 wrote to memory of 2076	1964	uzVsMx.exe	92
PID 336 wrote to memory of 4812	336	prcu.exe	98
PID 336 wrote to memory of 4812	336	prcu.exe	98
PID 336 wrote to memory of 4812	336	prcu.exe	98
PID 4812 wrote to memory of 1812	4812	uzVsMx.exe	99
PID 4812 wrote to memory of 1812	4812	uzVsMx.exe	99
PID 4812 wrote to memory of 1812	4812	uzVsMx.exe	99

C:\Users\Admin\AppData\Local\Temp\6cc414140f13caf6ab67abd78c488ac0N.exe
"C:\Users\Admin\AppData\Local\Temp\6cc414140f13caf6ab67abd78c488ac0N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3308
- C:\Users\Admin\AppData\Local\Temp\uzVsMx.exe
  C:\Users\Admin\AppData\Local\Temp\uzVsMx.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:1964
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\75d14d61.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2076

C:\ProgramData\bceh\prcu.exe
C:\ProgramData\bceh\prcu.exe start
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:336
- C:\Windows\TEMP\uzVsMx.exe
  C:\Windows\TEMP\uzVsMx.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of WriteProcessMemory
  PID:4812
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Windows\TEMP\312f1c8c.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1812

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:\ProgramData\bceh\prcu.exe

Filesize
243KB

MD5
6cc414140f13caf6ab67abd78c488ac0

SHA1
d90819c58bac99abdc37e394597acdef85dd36c4

SHA256
9b2d89057155cd1cec731e83a0946cf95772134f0069da737fa30935b5a9b325

SHA512
75133bf1e666e17d3d18e4953b8e62bcb87454157102f1825ba972feec0801901fa4bdaa0ba88823839ad7422622e274a39c4a183c4a0a7f00a8432be02e77db

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\I0E3LJN0\k2[1].rar

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\04D443C0.exe

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

Download Submit
C:\Users\Admin\AppData\Local\Temp\75d14d61.bat

Filesize
187B

MD5
0356b393b0da208870a3735d77d4fc66

SHA1
3de5b91ec8cb9aa30706ecd50336c2ff35fc5068

SHA256
32fb4be7066031ab63d0d5bc9457a42c9b7494acaab332a4f554c01abae3af98

SHA512
ac267f704bc4867282d1d464ab44564c42384c351b457baaa424f1bdad2e1b5df9f2d2bd2149e4aee3880341b17ae445a1620314888372d0eb03d426e079156f

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

Filesize
15KB

MD5
f7d21de5c4e81341eccd280c11ddcc9a

SHA1
d4e9ef10d7685d491583c6fa93ae5d9105d815bd

SHA256
4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

SHA512
e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

Download Submit
C:\Windows\TEMP\312f1c8c.bat

Filesize
133B

MD5
e854629bc0bdedc1ea81dbdd13d641be

SHA1
f36b6547489e60e7ba5bc3238b99c246a2028097

SHA256
ed7123a435af19af87cd78ebf68c40fdf93abff6bbd3993cf2cb02167f587ee1

SHA512
f6fa94736972f83d38166728db4089ef71bbcde97ce807190d5944198d43b62ca60a35e1cc8a4c35655d09371fc497b70b54f05282aca0f50872bdb651e5db22

Download Submit
memory/336-58-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/336-71-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1964-50-0x0000000000FD0000-0x0000000000FD9000-memory.dmp

Filesize
36KB

Download
memory/1964-4-0x0000000000FD0000-0x0000000000FD9000-memory.dmp

Filesize
36KB

Download
memory/3308-46-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3308-45-0x00000000005D0000-0x00000000005D9000-memory.dmp

Filesize
36KB

Download
memory/3308-52-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3308-44-0x00000000007C0000-0x00000000008C0000-memory.dmp

Filesize
1024KB

Download
memory/3308-0-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3308-73-0x00000000005D0000-0x00000000005D9000-memory.dmp

Filesize
36KB

Download
memory/3308-72-0x00000000007C0000-0x00000000008C0000-memory.dmp

Filesize
1024KB

Download
memory/4812-62-0x0000000000810000-0x0000000000819000-memory.dmp

Filesize
36KB

Download
memory/4812-67-0x0000000000810000-0x0000000000819000-memory.dmp

Filesize
36KB

Download