systembc | e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d

Analysis

max time kernel
148s
max time network
156s
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 16:21

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.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/0x00090000000233f0-5.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	NmKfkd.exe

Executes dropped EXE 3 IoCs

pid	Process
1400	NmKfkd.exe
2996	elmm.exe
2476	NmKfkd.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jabswitch.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 (x86)\Google\Update\1.3.36.371\GoogleUpdateComRegisterShell64.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\bin\jhat.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\kinit.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\Google\Chrome\Application\chrome_proxy.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jdeps.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\bin\policytool.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jmap.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\javaws.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Mozilla Firefox\plugin-container.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\Addons\OneDriveSetup.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\XLICONS.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_x64__8wekyb3d8bbwe\GetHelp.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxIdentityProvider_12.50.6001.0_x64__8wekyb3d8bbwe\XboxIdp.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_x64__8wekyb3d8bbwe\GameBar.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\idlj.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jstatd.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Windows Mail\wab.exe	NmKfkd.exe
File opened for modification	C:\Program Files\7-Zip\Uninstall.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jsadebugd.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\unpack200.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\SoundRec.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.106\elevation_service.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\java.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_11811.1001.18.0_x64__8wekyb3d8bbwe\StoreExperienceHost.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32Info.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javah.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javaw.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jjs.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoasb.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\jdk-1.8\jre\bin\rmiregistry.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\tnameserv.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SETLANG.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 (x86)\Adobe\Acrobat Reader DC\Reader\AcroBroker.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ssvagent.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.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\Java\jdk-1.8\bin\jps.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmiregistry.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxAccounts.exe	NmKfkd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_x64__8wekyb3d8bbwe\GameBar.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Eula.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\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\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOXMLED.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jrunscript.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jabswitch.exe	NmKfkd.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Tasks\elmm.job	7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.exe
File created	C:\Windows\Tasks\elmm.job	7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.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
2060	2252	WerFault.exe	83

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	NmKfkd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.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	elmm.exe

Modifies data under HKEY_USERS 5 IoCs

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2252	7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.exe
2252	7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 1400	2252	7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.exe	84
PID 2252 wrote to memory of 1400	2252	7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.exe	84
PID 2252 wrote to memory of 1400	2252	7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.exe	84
PID 1400 wrote to memory of 4700	1400	NmKfkd.exe	91
PID 1400 wrote to memory of 4700	1400	NmKfkd.exe	91
PID 1400 wrote to memory of 4700	1400	NmKfkd.exe	91
PID 2996 wrote to memory of 2476	2996	elmm.exe	101
PID 2996 wrote to memory of 2476	2996	elmm.exe	101
PID 2996 wrote to memory of 2476	2996	elmm.exe	101
PID 2476 wrote to memory of 2836	2476	NmKfkd.exe	102
PID 2476 wrote to memory of 2836	2476	NmKfkd.exe	102
PID 2476 wrote to memory of 2836	2476	NmKfkd.exe	102

C:\Users\Admin\AppData\Local\Temp\7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.exe
"C:\Users\Admin\AppData\Local\Temp\7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2252
- 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:1400
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\59182402.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2252 -s 932
  2⤵
  - Program crash
  PID:2060

C:\ProgramData\tmev\elmm.exe
C:\ProgramData\tmev\elmm.exe start
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2996
- 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:2476
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Windows\TEMP\119d2863.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2252 -ip 2252
1⤵
PID:3752

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

Loading Replay Monitor...

Downloads

C:\ProgramData\tmev\elmm.exe

Filesize
247KB

MD5
e80a1d9a248c337a5d95f09776c0b092

SHA1
4585f99e00ce0068f9a40893b4741b5151066173

SHA256
e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d

SHA512
3c42c682236638a61d3ec6323fc633eb92eab9118e589ab012d407231069b974232d36bfa823dce6f9d24e618cd68fc9ac95b541966d6a4562a3d40b3dc5c04a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\MQYRE6E5\k2[1].rar

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\59182402.bat

Filesize
187B

MD5
1d4322a680a54e30b54b4f5ba889e2e7

SHA1
bb8a31cc30456cdda8f658fb2e25a185dd5628d3

SHA256
cfd76d04ae5f2aa0e0cc98b3a38be5977e43af60137b3d91e4631ff4348076bf

SHA512
7d28f45a4541a92c1d94d857ae69bff3ee5e79398fbbe78c13325d8c4e38d5597c47984e104a920a4e038ecac2c0be064a9b7e7ba766245d03950acf7492221a

Download Submit
C:\Users\Admin\AppData\Local\Temp\623319AE.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\119d2863.bat

Filesize
133B

MD5
46893a3483ac44a73a0470d1e2d2349c

SHA1
81c5af560133c7ccf9131fe000f52ea1eb028393

SHA256
c781a7a0295144b6c54708c318c15d3a3fa4546b7cc747b1e40274a888eb9c69

SHA512
7b35bdbc6f99975c77039f0d5bf1d72ed0d4e76bd0060ffed5d8762ca4b70fd1a4377dd6efe3c296b3d8e0fbf4ba8a6d8f3e91169709d01920e9e909f3c8f92e

Download Submit
memory/1400-50-0x0000000000A50000-0x0000000000A59000-memory.dmp

Filesize
36KB

Download
memory/1400-4-0x0000000000A50000-0x0000000000A59000-memory.dmp

Filesize
36KB

Download
memory/2252-24-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2252-0-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2252-23-0x00000000008F0000-0x00000000008F9000-memory.dmp

Filesize
36KB

Download
memory/2252-52-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2252-22-0x00000000004B0000-0x00000000005B0000-memory.dmp

Filesize
1024KB

Download
memory/2252-69-0x00000000008F0000-0x00000000008F9000-memory.dmp

Filesize
36KB

Download
memory/2252-68-0x00000000004B0000-0x00000000005B0000-memory.dmp

Filesize
1024KB

Download
memory/2476-63-0x00000000002D0000-0x00000000002D9000-memory.dmp

Filesize
36KB

Download
memory/2996-71-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download