systembc | 055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
25-07-2024 14:28

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General

Target

055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe
Size

246KB
MD5

97a3d3bbbf620a1eead18626beef0932
SHA1

52a1b750a8bb5b64e153179e090f95c69bd340b8
SHA256

055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8
SHA512

cf5b5a215c7e2ac16306a3f3737d9c7a57c87e8cbe92299e947cf734a8379a23f18b8a43058d359b10e1aa7597f141e54862d6980186d1614902b803c233385d
SSDEEP

3072:1+m9ZYH0gOSr9fM9pXF57/VQ9LZjfnGCH:sSSOj99/GLpe

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/0x00080000000120ff-8.dat	aspack_v212_v242
behavioral1/memory/1960-10-0x0000000000F70000-0x0000000000F79000-memory.dmp	aspack_v212_v242

Executes dropped EXE 3 IoCs

pid	Process
2416	FYGAKz.exe
1060	xakirj.exe
2000	FYGAKz.exe

Loads dropped DLL 4 IoCs

pid	Process
1960	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe
1960	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe
1060	xakirj.exe
1060	xakirj.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Games\Solitaire\Solitaire.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32Info.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\SCANPST.EXE	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSTORDB.EXE	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jsadebugd.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jre7\bin\keytool.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Microsoft Games\Minesweeper\MineSweeper.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jconsole.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Mozilla Firefox\uninstall\helper.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Google\Update\Install\{2B81D3B1-6134-4F8A-A160-385C02BE7682}\chrome_installer.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\misc.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\OUTLOOK.EXE	FYGAKz.exe
File opened for modification	C:\Program Files\Mozilla Firefox\crashreporter.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jabswitch.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jrunscript.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jmc.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jstat.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\launcher.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jre7\bin\javaw.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Microsoft Office\Office14\MSOHTMED.EXE	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\VPREVIEW.EXE	FYGAKz.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\setup.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\ktab.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Mozilla Firefox\minidump-analyzer.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\ONENOTE.EXE	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\ONENOTEM.EXE	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PPTICO.EXE	FYGAKz.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\orbd.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\orbd.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jre7\bin\ktab.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Backgammon\bckgzm.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroTextExtractor.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdate.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Windows Journal\PDIALOG.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Windows Mail\wabmig.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jre7\bin\kinit.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javah.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Windows Journal\Journal.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleCrashHandler.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\GROOVEMN.EXE	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSACCESS.EXE	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jre7\bin\orbd.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jcmd.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jre7\bin\pack200.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-1033-7B44-A90000000001}\Setup.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSOSYNC.EXE	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSPUB.EXE	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jps.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\ktab.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateSetup.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\wsimport.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jre7\bin\ssvagent.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateCore.exe	FYGAKz.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\excelcnv.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Checkers\chkrzm.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jmap.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jre7\bin\rmiregistry.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jre7\bin\unpack200.exe	FYGAKz.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\apt.exe	FYGAKz.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\xakirj.job	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe
File opened for modification	C:\Windows\Tasks\xakirj.job	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.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	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FYGAKz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xakirj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FYGAKz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies data under HKEY_USERS 3 IoCs

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1960	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 2416	1960	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe	30
PID 1960 wrote to memory of 2416	1960	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe	30
PID 1960 wrote to memory of 2416	1960	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe	30
PID 1960 wrote to memory of 2416	1960	055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe	30
PID 2416 wrote to memory of 2712	2416	FYGAKz.exe	33
PID 2416 wrote to memory of 2712	2416	FYGAKz.exe	33
PID 2416 wrote to memory of 2712	2416	FYGAKz.exe	33
PID 2416 wrote to memory of 2712	2416	FYGAKz.exe	33
PID 796 wrote to memory of 1060	796	taskeng.exe	36
PID 796 wrote to memory of 1060	796	taskeng.exe	36
PID 796 wrote to memory of 1060	796	taskeng.exe	36
PID 796 wrote to memory of 1060	796	taskeng.exe	36
PID 1060 wrote to memory of 2000	1060	xakirj.exe	37
PID 1060 wrote to memory of 2000	1060	xakirj.exe	37
PID 1060 wrote to memory of 2000	1060	xakirj.exe	37
PID 1060 wrote to memory of 2000	1060	xakirj.exe	37
PID 2000 wrote to memory of 2904	2000	FYGAKz.exe	38
PID 2000 wrote to memory of 2904	2000	FYGAKz.exe	38
PID 2000 wrote to memory of 2904	2000	FYGAKz.exe	38
PID 2000 wrote to memory of 2904	2000	FYGAKz.exe	38

C:\Users\Admin\AppData\Local\Temp\055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe
"C:\Users\Admin\AppData\Local\Temp\055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\FYGAKz.exe
  C:\Users\Admin\AppData\Local\Temp\FYGAKz.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2416
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\05af77cc.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2712

C:\Windows\system32\taskeng.exe
taskeng.exe {BCB4C794-A76F-4F30-B973-DD0E6084E2AB} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:796
- C:\ProgramData\qrrrrr\xakirj.exe
  C:\ProgramData\qrrrrr\xakirj.exe start
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1060
- - C:\Windows\TEMP\FYGAKz.exe
    C:\Windows\TEMP\FYGAKz.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Modifies data under HKEY_USERS
    - Suspicious use of WriteProcessMemory
    PID:2000
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Windows\TEMP\33c16c8c.bat" "
      4⤵
      System Location Discovery: System Language Discovery
      PID:2904

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

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Downloads

C:\ProgramData\qrrrrr\xakirj.exe

Filesize
246KB

MD5
97a3d3bbbf620a1eead18626beef0932

SHA1
52a1b750a8bb5b64e153179e090f95c69bd340b8

SHA256
055bb90b6b1355dfbd03fc77826720e14b37934a078fa1caa1ef0e47e04a99e8

SHA512
cf5b5a215c7e2ac16306a3f3737d9c7a57c87e8cbe92299e947cf734a8379a23f18b8a43058d359b10e1aa7597f141e54862d6980186d1614902b803c233385d

Download Submit
C:\Users\Admin\AppData\Local\Temp\05af77cc.bat

Filesize
187B

MD5
6560607db7d3586eeaff002136dfabb1

SHA1
42997c3e80f120067109e3400f3fabd21145cd4b

SHA256
35122a95bfe9c0d84ea1842507b47fa9ddd0595c1c63de406a28d24e3e118a13

SHA512
82608492ab324fee46a36a6b4b1286db37fd0cf28aa70108164792aabbc45874cb20e4680c781e8c5f770baab116176091afd86af65a631008bdaa97ebe12f15

Download Submit
C:\Users\Admin\AppData\Local\Temp\75117FB9.exe

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

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

Filesize
15KB

MD5
f7d21de5c4e81341eccd280c11ddcc9a

SHA1
d4e9ef10d7685d491583c6fa93ae5d9105d815bd

SHA256
4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

SHA512
e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

Download Submit
C:\Windows\TEMP\33c16c8c.bat

Filesize
133B

MD5
804b10e866f0f57dab2d7f90ec3ab7f1

SHA1
6136cfec63e8d643407b631044387168f79d8712

SHA256
fa0ba342566ae8f896c021ff8650a8314e973fa6248781fbefa09ed3b96f9435

SHA512
5d9834e640a75663e328df7ae8eabcc570e7d66e441539ea5eabf4a5769567c5a463be0e355c22f9f870972fe44641002d7975193df34f222e77acaf585b37bb

Download Submit
memory/1060-85-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/1060-64-0x0000000000340000-0x0000000000349000-memory.dmp

Filesize
36KB

Download
memory/1060-68-0x0000000000340000-0x0000000000349000-memory.dmp

Filesize
36KB

Download
memory/1960-16-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/1960-9-0x0000000000F70000-0x0000000000F79000-memory.dmp

Filesize
36KB

Download
memory/1960-54-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/1960-10-0x0000000000F70000-0x0000000000F79000-memory.dmp

Filesize
36KB

Download
memory/1960-1-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/1960-18-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1960-17-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/1960-83-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/2000-71-0x0000000000340000-0x0000000000349000-memory.dmp

Filesize
36KB

Download
memory/2416-52-0x0000000000F70000-0x0000000000F79000-memory.dmp

Filesize
36KB

Download
memory/2416-11-0x0000000000F70000-0x0000000000F79000-memory.dmp

Filesize
36KB

Download