systembc | e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-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
behavioral1/files/0x0004000000017801-1.dat	aspack_v212_v242

Executes dropped EXE 3 IoCs

pid	Process
2148	NmKfkd.exe
2908	sahuwpr.exe
3036	NmKfkd.exe

Loads dropped DLL 4 IoCs

pid	Process
2012	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe
2012	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe
2908	sahuwpr.exe
2908	sahuwpr.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\Office14\MSOHTMED.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\uninstall.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\Java\jre7\bin\kinit.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Mozilla Firefox\crashreporter.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Checkers\chkrzm.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jconsole.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre7\bin\tnameserv.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Games\Mahjong\Mahjong.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Games\Minesweeper\MineSweeper.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\policytool.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Mozilla Firefox\minidump-analyzer.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\VPREVIEW.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\unpack200.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\setup.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jmc.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Windows Journal\PDIALOG.exe	NmKfkd.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32Info.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSPUB.EXE	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\A3DUtility.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javaw.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\rmiregistry.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Games\Hearts\Hearts.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Windows Sidebar\sidebar.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSTORDB.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javah.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Games\FreeCell\FreeCell.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\OIS.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\serialver.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\lib\nbexec.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Wordconv.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jar.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\lib\nbexec64.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre7\bin\java-rmi.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javac.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre7\bin\rmid.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Windows Mail\wabmig.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PPTICO.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\ktab.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jstatd.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\javaw.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jps.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\unpack200.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateSetup.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\jdk1.7.0_80\jre\bin\pack200.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Microsoft Games\Purble Place\PurblePlace.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wab.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jinfo.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jcmd.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre7\bin\klist.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\excelcnv.exe	NmKfkd.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSOUC.EXE	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\java.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\klist.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\ssvagent.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jre7\bin\ssvagent.exe	NmKfkd.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\servertool.exe	NmKfkd.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\sahuwpr.job	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe
File opened for modification	C:\Windows\Tasks\sahuwpr.job	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.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	sahuwpr.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
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\UNCAsIntranet = "0"	NmKfkd.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	NmKfkd.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	NmKfkd.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2012	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 2148	2012	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe	30
PID 2012 wrote to memory of 2148	2012	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe	30
PID 2012 wrote to memory of 2148	2012	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe	30
PID 2012 wrote to memory of 2148	2012	e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe	30
PID 2148 wrote to memory of 2588	2148	NmKfkd.exe	32
PID 2148 wrote to memory of 2588	2148	NmKfkd.exe	32
PID 2148 wrote to memory of 2588	2148	NmKfkd.exe	32
PID 2148 wrote to memory of 2588	2148	NmKfkd.exe	32
PID 2192 wrote to memory of 2908	2192	taskeng.exe	35
PID 2192 wrote to memory of 2908	2192	taskeng.exe	35
PID 2192 wrote to memory of 2908	2192	taskeng.exe	35
PID 2192 wrote to memory of 2908	2192	taskeng.exe	35
PID 2908 wrote to memory of 3036	2908	sahuwpr.exe	36
PID 2908 wrote to memory of 3036	2908	sahuwpr.exe	36
PID 2908 wrote to memory of 3036	2908	sahuwpr.exe	36
PID 2908 wrote to memory of 3036	2908	sahuwpr.exe	36
PID 3036 wrote to memory of 2168	3036	NmKfkd.exe	37
PID 3036 wrote to memory of 2168	3036	NmKfkd.exe	37
PID 3036 wrote to memory of 2168	3036	NmKfkd.exe	37
PID 3036 wrote to memory of 2168	3036	NmKfkd.exe	37

C:\Users\Admin\AppData\Local\Temp\e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe
"C:\Users\Admin\AppData\Local\Temp\e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Users\Admin\AppData\Local\Temp\NmKfkd.exe
  C:\Users\Admin\AppData\Local\Temp\NmKfkd.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2148
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\03532c7b.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2588

C:\Windows\system32\taskeng.exe
taskeng.exe {AE0AC057-3D99-48D0-BF19-677FACC03C6B} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2192
- C:\ProgramData\psdvfo\sahuwpr.exe
  C:\ProgramData\psdvfo\sahuwpr.exe start
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2908
- - C:\Windows\TEMP\NmKfkd.exe
    C:\Windows\TEMP\NmKfkd.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Modifies data under HKEY_USERS
    - Suspicious use of WriteProcessMemory
    PID:3036
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Windows\TEMP\66dd6e0c.bat" "
      4⤵
      System Location Discovery: System Language Discovery
      PID:2168

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\psdvfo\sahuwpr.exe

Filesize
247KB

MD5
e80a1d9a248c337a5d95f09776c0b092

SHA1
4585f99e00ce0068f9a40893b4741b5151066173

SHA256
e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d

SHA512
3c42c682236638a61d3ec6323fc633eb92eab9118e589ab012d407231069b974232d36bfa823dce6f9d24e618cd68fc9ac95b541966d6a4562a3d40b3dc5c04a

Download Submit
C:\Users\Admin\AppData\Local\Temp\03532c7b.bat

Filesize
187B

MD5
1ae519051b537cc67a4166efb8cfc01e

SHA1
874a79a9cba648242b30486f8c997da328780994

SHA256
6b76ea7a3d8e104524f14bc307e7a8c40e04b9f53e5185a265990d69c83cda85

SHA512
8a9f018feae7e45d540731d8e1e3bedc6fd4aec1b13f14af747db2082574eb14a5deab9900d3480d6d78946da7b40f63a46209b472434e380fee6e3cd610ae5a

Download Submit
C:\Users\Admin\AppData\Local\Temp\11D81BAD.exe

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\11D81BAD.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\66dd6e0c.bat

Filesize
133B

MD5
2097d593e4810277cb8ceefb273a1d64

SHA1
2fa842d6183589b04a74d7f4ec7a4264466a916e

SHA256
5adfc49fef778395629bdeeb949c5f52e945982a24ce52f96c7904b0dc99f5fe

SHA512
f51362430109a8f6d348151a2a8ae6936532b0fba0b4af18e2af47063d6fe06020bcd1605f06bc64a8d3446c18808e9495e73d7a72904cc2279c8cb2c3d3135b

Download Submit
memory/2012-22-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/2012-9-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/2012-24-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2012-0-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2012-8-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/2012-76-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/2012-59-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2012-23-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/2148-57-0x0000000000310000-0x0000000000319000-memory.dmp

Filesize
36KB

Download
memory/2148-12-0x0000000000310000-0x0000000000319000-memory.dmp

Filesize
36KB

Download
memory/2908-65-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2908-69-0x0000000000990000-0x0000000000999000-memory.dmp

Filesize
36KB

Download
memory/2908-90-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/3036-77-0x0000000000990000-0x0000000000999000-memory.dmp

Filesize
36KB

Download