systembc | 11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
25-07-2024 15:45

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General

Target

11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe
Size

248KB
MD5

ecd0928e717ce95b2918b50460813db7
SHA1

bdb4d8572ef6f4a48fa0b5d9d6988bd6ac73db30
SHA256

11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa
SHA512

ae1d641d2fcd77c8112928ccf564a028244f5763d8f93a093392ce561bac959d667325ac2d3a72abd2c3e3d358870bef1a930d44c611651c6356c0b6830d60e8
SSDEEP

3072:cLiOmI5XFUfxR14JisxsyCz8Q5bPdO4OyGCH:i1mmUeJZjeFe

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 2 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x000b000000012246-2.dat	aspack_v212_v242
behavioral1/memory/1736-51-0x0000000000FD0000-0x0000000000FD9000-memory.dmp	aspack_v212_v242

Executes dropped EXE 3 IoCs

pid	Process
2428	bGfoJD.exe
1736	bdfinsv.exe
2664	bGfoJD.exe

Loads dropped DLL 4 IoCs

pid	Process
2376	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe
2376	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe
1736	bdfinsv.exe
1736	bdfinsv.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\rmid.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Windows Mail\WinMail.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSOSYNC.EXE	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSTORE.EXE	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jconsole.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\jp2launcher.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\keytool.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jre7\bin\javaws.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jre7\bin\policytool.exe	bGfoJD.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\OUTLOOK.EXE	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\java.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jre7\bin\kinit.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\chrome_pwa_launcher.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\launcher.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Microsoft Games\Purble Place\PurblePlace.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\A3DUtility.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\LogTransport2.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\excelcnv.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\jabswitch.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Spades\shvlzm.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\pack200.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Backgammon\bckgzm.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\ktab.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\java.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\INFOPATH.EXE	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\klist.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\native2ascii.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\ktab.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Microsoft Games\Mahjong\Mahjong.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Windows Sidebar\sidebar.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jar.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\javacpl.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Mozilla Firefox\private_browsing.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Windows Journal\PDIALOG.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateSetup.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jre7\bin\java.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Mozilla Firefox\minidump-analyzer.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Microsoft Games\FreeCell\FreeCell.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Microsoft Games\Solitaire\Solitaire.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javac.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jre7\bin\rmid.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\ONENOTEM.EXE	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Wordconv.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\WORDICON.EXE	bGfoJD.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Mozilla Firefox\pingsender.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jsadebugd.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\kinit.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\rmiregistry.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Mozilla Firefox\plugin-container.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javafxpackager.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\java-rmi.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\rmiregistry.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateComRegisterShell64.exe	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\ACCICONS.EXE	bGfoJD.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jabswitch.exe	bGfoJD.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\unpack200.exe	bGfoJD.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\bdfinsv.job	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe
File opened for modification	C:\Windows\Tasks\bdfinsv.job	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.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	bdfinsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bGfoJD.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bGfoJD.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies data under HKEY_USERS 3 IoCs

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2376	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2428	2376	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe	30
PID 2376 wrote to memory of 2428	2376	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe	30
PID 2376 wrote to memory of 2428	2376	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe	30
PID 2376 wrote to memory of 2428	2376	11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe	30
PID 2428 wrote to memory of 2312	2428	bGfoJD.exe	32
PID 2428 wrote to memory of 2312	2428	bGfoJD.exe	32
PID 2428 wrote to memory of 2312	2428	bGfoJD.exe	32
PID 2428 wrote to memory of 2312	2428	bGfoJD.exe	32
PID 2632 wrote to memory of 1736	2632	taskeng.exe	36
PID 2632 wrote to memory of 1736	2632	taskeng.exe	36
PID 2632 wrote to memory of 1736	2632	taskeng.exe	36
PID 2632 wrote to memory of 1736	2632	taskeng.exe	36
PID 1736 wrote to memory of 2664	1736	bdfinsv.exe	37
PID 1736 wrote to memory of 2664	1736	bdfinsv.exe	37
PID 1736 wrote to memory of 2664	1736	bdfinsv.exe	37
PID 1736 wrote to memory of 2664	1736	bdfinsv.exe	37
PID 2664 wrote to memory of 1576	2664	bGfoJD.exe	38
PID 2664 wrote to memory of 1576	2664	bGfoJD.exe	38
PID 2664 wrote to memory of 1576	2664	bGfoJD.exe	38
PID 2664 wrote to memory of 1576	2664	bGfoJD.exe	38

C:\Users\Admin\AppData\Local\Temp\11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe
"C:\Users\Admin\AppData\Local\Temp\11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Users\Admin\AppData\Local\Temp\bGfoJD.exe
  C:\Users\Admin\AppData\Local\Temp\bGfoJD.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2428
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\073b639f.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2312

C:\Windows\system32\taskeng.exe
taskeng.exe {93A7EC0A-14B1-47C6-A6EE-61D22D61A923} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2632
- C:\ProgramData\kfxsnh\bdfinsv.exe
  C:\ProgramData\kfxsnh\bdfinsv.exe start
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1736
- - C:\Windows\TEMP\bGfoJD.exe
    C:\Windows\TEMP\bGfoJD.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Modifies data under HKEY_USERS
    - Suspicious use of WriteProcessMemory
    PID:2664
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Windows\TEMP\6a31053b.bat" "
      4⤵
      System Location Discovery: System Language Discovery
      PID:1576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\kfxsnh\bdfinsv.exe

Filesize
248KB

MD5
ecd0928e717ce95b2918b50460813db7

SHA1
bdb4d8572ef6f4a48fa0b5d9d6988bd6ac73db30

SHA256
11c509649c391209ce09bc178ebffcfc7cbfcf038ce699aebfd1303191c136aa

SHA512
ae1d641d2fcd77c8112928ccf564a028244f5763d8f93a093392ce561bac959d667325ac2d3a72abd2c3e3d358870bef1a930d44c611651c6356c0b6830d60e8

Download Submit
C:\Users\Admin\AppData\Local\Temp\073b639f.bat

Filesize
187B

MD5
bcbe6009ad12a293e97fd73b78939f0f

SHA1
eef322b262032639e4793e7b0fcd184067b603ad

SHA256
136e53a54fcb3881fb89ecee6b181a0d3ed527d4c576f0ff32e35e4bd6d9e2a2

SHA512
e88937968b89d7bca6635e463a92767b736d5996f5b69bf5d9faf8acdfdf2b55fc481020ecf3c6ee7b079e66422eba0d7d638eefa3a0fa32b4b7968e2c2f8243

Download Submit
C:\Windows\Temp\6a31053b.bat

Filesize
133B

MD5
f1b62772b682f8a17f5ab678d26f362a

SHA1
659ea327e5f429e27a458b90ba0867e670b5cb0d

SHA256
ce7a292867b2a40d45ddec45ab6c4151951560d93298337b3cd2583937da4e16

SHA512
122d33245fcb0d2bbdabc5d79e3ac803fd0b78503c04453fd257f56b483e379d3020f12190528bdb4b9048590242f48c9f202852125f3015668b69ae844269d4

Download Submit
\Users\Admin\AppData\Local\Temp\bGfoJD.exe

Filesize
15KB

MD5
f7d21de5c4e81341eccd280c11ddcc9a

SHA1
d4e9ef10d7685d491583c6fa93ae5d9105d815bd

SHA256
4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

SHA512
e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

Download Submit
memory/1736-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1736-51-0x0000000000FD0000-0x0000000000FD9000-memory.dmp

Filesize
36KB

Download
memory/1736-52-0x0000000000FD0000-0x0000000000FD9000-memory.dmp

Filesize
36KB

Download
memory/2376-1-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2376-18-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2376-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2376-17-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/2376-16-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/2376-8-0x0000000001370000-0x0000000001379000-memory.dmp

Filesize
36KB

Download
memory/2376-9-0x0000000001370000-0x0000000001379000-memory.dmp

Filesize
36KB

Download
memory/2376-66-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/2428-34-0x0000000001370000-0x0000000001379000-memory.dmp

Filesize
36KB

Download
memory/2428-12-0x0000000001370000-0x0000000001379000-memory.dmp

Filesize
36KB

Download
memory/2664-53-0x0000000000FD0000-0x0000000000FD9000-memory.dmp

Filesize
36KB

Download