systembc | e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d

Analysis

max time kernel
150s
max time network
150s
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 06:36

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General

Target

e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe
Size

247KB
MD5

e80a1d9a248c337a5d95f09776c0b092
SHA1

4585f99e00ce0068f9a40893b4741b5151066173
SHA256

e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d
SHA512

3c42c682236638a61d3ec6323fc633eb92eab9118e589ab012d407231069b974232d36bfa823dce6f9d24e618cd68fc9ac95b541966d6a4562a3d40b3dc5c04a
SSDEEP

3072:xrRbOKH6aSZYEGhm0OWh5bSpEC2lrGCH:x1OWSZYlOWfSpENo

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/0x000900000002345d-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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	NmKfkd.exe

Executes dropped EXE 3 IoCs

pid	Process
2956	NmKfkd.exe
1284	xlhe.exe
1616	NmKfkd.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jinfo.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Solitaire.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ktab.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\rmid.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate64.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoadfsb.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.Brokered.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\ktab.exe	NmKfkd.exe
File opened for modification	C:\Program Files\7-Zip\Uninstall.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\orbd.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\FLTLDR.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Mozilla Firefox\default-browser-agent.exe	NmKfkd.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOICONS.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\onenoteim.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxSpeechToTextOverlay_1.17.29001.0_x64__8wekyb3d8bbwe\SpeechToTextOverlay64-Retail.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\native2ascii.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOUC.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Source Engine\OSE.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeApp.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jabswitch.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office 15\ClientX64\OfficeClickToRun.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\XboxApp.exe	NmKfkd.exe
File opened for modification	C:\Program Files\dotnet\dotnet.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jar.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javac.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\ktab.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\ssvagent.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\GRAPH.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	NmKfkd.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\pack200.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\keytool.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoev.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Calculator.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\FullTrustNotifier.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jps.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\MSOHTMED.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javapackager.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.Loader.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\fmui\fmui.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\extcheck.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\kinit.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\TCUI-App.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jstat.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerPythonRedirector.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\codecpacks.VP9.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\Uninstall.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\klist.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOSYNC.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxTsr.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmic.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoia.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\xjc.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe	NmKfkd.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\xlhe.job	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe
File opened for modification	C:\Windows\Tasks\xlhe.job	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.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
3000	4616	WerFault.exe	85

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xlhe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NmKfkd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NmKfkd.exe

Modifies data under HKEY_USERS 5 IoCs

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4616	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe
4616	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 2956	4616	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe	86
PID 4616 wrote to memory of 2956	4616	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe	86
PID 4616 wrote to memory of 2956	4616	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe	86
PID 2956 wrote to memory of 4116	2956	NmKfkd.exe	91
PID 2956 wrote to memory of 4116	2956	NmKfkd.exe	91
PID 2956 wrote to memory of 4116	2956	NmKfkd.exe	91
PID 1284 wrote to memory of 1616	1284	xlhe.exe	98
PID 1284 wrote to memory of 1616	1284	xlhe.exe	98
PID 1284 wrote to memory of 1616	1284	xlhe.exe	98
PID 1616 wrote to memory of 3016	1616	NmKfkd.exe	99
PID 1616 wrote to memory of 3016	1616	NmKfkd.exe	99
PID 1616 wrote to memory of 3016	1616	NmKfkd.exe	99

C:\Users\Admin\AppData\Local\Temp\e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe
"C:\Users\Admin\AppData\Local\Temp\e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Local\Temp\NmKfkd.exe
  C:\Users\Admin\AppData\Local\Temp\NmKfkd.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:2956
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\123f43a9.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 492
  2⤵
  - Program crash
  PID:3000

C:\ProgramData\xlama\xlhe.exe
C:\ProgramData\xlama\xlhe.exe start
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Windows\TEMP\NmKfkd.exe
  C:\Windows\TEMP\NmKfkd.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of WriteProcessMemory
  PID:1616
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Windows\TEMP\705f1c41.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4616 -ip 4616
1⤵
PID:444

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\xlama\xlhe.exe

Filesize
247KB

MD5
e80a1d9a248c337a5d95f09776c0b092

SHA1
4585f99e00ce0068f9a40893b4741b5151066173

SHA256
e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d

SHA512
3c42c682236638a61d3ec6323fc633eb92eab9118e589ab012d407231069b974232d36bfa823dce6f9d24e618cd68fc9ac95b541966d6a4562a3d40b3dc5c04a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\MDMHN06X\k2[1].rar

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\123f43a9.bat

Filesize
187B

MD5
613922f6be4901c9ad52c18033b2664c

SHA1
5c3beb8bc4110a302a0e0e3cd5b25b5cc4c03f0d

SHA256
703cc1e9f31289a9c023b9ea0df6e518582fb30da09d2ab728fb8edfcfe3dda3

SHA512
9dcfe2e596f77d6b8b0ed1b27d4d5fdd1a77b484b89fc6164e520320e047ca52e3f716bc90ee41fbf211bdd4d01036de96efc2cfb715578afade0926075c795b

Download Submit
C:\Users\Admin\AppData\Local\Temp\703A1833.exe

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

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

Filesize
15KB

MD5
f7d21de5c4e81341eccd280c11ddcc9a

SHA1
d4e9ef10d7685d491583c6fa93ae5d9105d815bd

SHA256
4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

SHA512
e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

Download Submit
C:\Windows\TEMP\705f1c41.bat

Filesize
133B

MD5
1f35bf8634aca1cb781a3b3b5b90dd24

SHA1
913b7648b9f928dff32619f7645a75cc4c01ca67

SHA256
50652a023de56633b18e3de3efca680176b784e424ff7797ce833ea96aaf2cd2

SHA512
8491b41b10a00235cbcf6eba533cfebeb2c7d6cbe80cd786dc628d44902c4b2abf071e2c2798f76f24fd5ce2b835ddc5393c9bb25143edce84067c57487cd6a7

Download Submit
memory/1284-72-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/1616-64-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/2956-51-0x0000000000C60000-0x0000000000C69000-memory.dmp

Filesize
36KB

Download
memory/2956-5-0x0000000000C60000-0x0000000000C69000-memory.dmp

Filesize
36KB

Download
memory/4616-0-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4616-53-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4616-17-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4616-16-0x00000000005F0000-0x00000000005F9000-memory.dmp

Filesize
36KB

Download
memory/4616-15-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/4616-70-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/4616-71-0x00000000005F0000-0x00000000005F9000-memory.dmp

Filesize
36KB

Download