systembc | f9ff6bac08394cce4b892bc5875e3970bcdfaa83f3d7613b7f55968b410e85d7

Analysis

max time kernel
152s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 17:48

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General

Target

507d8c2edb4500f479f31320aeae9940.exe
Size

792KB
MD5

507d8c2edb4500f479f31320aeae9940
SHA1

d893a91a87cde424c90e699420f5c2235348e913
SHA256

f9ff6bac08394cce4b892bc5875e3970bcdfaa83f3d7613b7f55968b410e85d7
SHA512

e49a05e6375fd6212c57d6643ecbdcb52f641843a28bb4381256e5c422cb760c87810bcbbb15ceb0cd4dc9231a45e9369e2c6334778ac4f998a5043176183bb7
SSDEEP

12288:+dpeb+ZKEqYDVVh/jQe9rZnuRX1klztojDMCSEPXMjSGaZlUP9XqZCphS5p:+dpXKEFDVZ9rZnuYojIC3M9XqkPM

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

146.70.86.61:443

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 1 IoCs

Processes:

kbxs.exe

pid process

2668 kbxs.exe

pid	process
2668	kbxs.exe

Drops file in System32 directory 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{6108CF91-DA37-45B2-908A-7EB81F317999}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{F98D553C-5505-42BA-A6ED-4EB54C9B8B5D}.catalogItem	svchost.exe

Drops file in Windows directory 2 IoCs

Processes:

507d8c2edb4500f479f31320aeae9940.exe

description	ioc	process
File created	C:\Windows\Tasks\kbxs.job	507d8c2edb4500f479f31320aeae9940.exe
File opened for modification	C:\Windows\Tasks\kbxs.job	507d8c2edb4500f479f31320aeae9940.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

507d8c2edb4500f479f31320aeae9940.exe

pid process

1544 507d8c2edb4500f479f31320aeae9940.exe
1544 507d8c2edb4500f479f31320aeae9940.exe

pid	process
1544	507d8c2edb4500f479f31320aeae9940.exe
1544	507d8c2edb4500f479f31320aeae9940.exe

C:\Users\Admin\AppData\Local\Temp\507d8c2edb4500f479f31320aeae9940.exe
"C:\Users\Admin\AppData\Local\Temp\507d8c2edb4500f479f31320aeae9940.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1544

C:\ProgramData\plxc\kbxs.exe
C:\ProgramData\plxc\kbxs.exe start
1⤵
- Executes dropped EXE
PID:2668

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:2976

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\plxc\kbxs.exe
Filesize
792KB

MD5
507d8c2edb4500f479f31320aeae9940

SHA1
d893a91a87cde424c90e699420f5c2235348e913

SHA256
f9ff6bac08394cce4b892bc5875e3970bcdfaa83f3d7613b7f55968b410e85d7

SHA512
e49a05e6375fd6212c57d6643ecbdcb52f641843a28bb4381256e5c422cb760c87810bcbbb15ceb0cd4dc9231a45e9369e2c6334778ac4f998a5043176183bb7

Download Submit
memory/1544-132-0x0000000002D50000-0x0000000002D69000-memory.dmp

Filesize
100KB

Download
memory/1544-133-0x0000000002D80000-0x0000000002D8B000-memory.dmp

Filesize
44KB

Download
memory/2668-135-0x00000000012D0000-0x00000000012DB000-memory.dmp

Filesize
44KB

Download