systembc | 6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c

General

Target

6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe
Size

89KB
MD5

754f68fbcd88c48a9c689632b66967c4
SHA1

fc20fe331d1699145df56ec11a95cb6d7f72279f
SHA256

6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c
SHA512

0b7e83826ec8a7599fd876590e8c096f71a034d56e34d138c4d29ac3bf8c512aecacebdd64a47ce5bf449a27802cf915a5a6a8ae251eb66a7262df1065a0f839

Score

10^/10

systembc suricata trojan

Malware Config

Extracted

Family

systembc

C2

advertrex20.xyz:4044

gentexman37.xyz:4044

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
suricata: ET MALWARE Observed SystemBC CnC Domain in DNS Query
suricata: ET MALWARE Observed SystemBC CnC Domain in DNS Query
suricata
Executes dropped EXE 1 IoCs

Processes:

kpgll.exe

pid process

1784 kpgll.exe
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

29 api.ipify.org
35 ip4.seeip.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Connection Proxy
T1090

pid	process
1784	kpgll.exe

flow	ioc
29	api.ipify.org
35	ip4.seeip.org

Drops file in Windows directory 2 IoCs

Processes:

6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe

description	ioc	process
File created	C:\Windows\Tasks\kpgll.job	6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe
File opened for modification	C:\Windows\Tasks\kpgll.job	6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2692 2764 WerFault.exe 6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe

pid	pid_target	process	target process
2692	2764	WerFault.exe	6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe

pid	process
2764	6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe
2764	6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe

C:\Users\Admin\AppData\Local\Temp\6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe
"C:\Users\Admin\AppData\Local\Temp\6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 484
2⤵
- Program crash
PID:2692

C:\ProgramData\vjxdk\kpgll.exe
C:\ProgramData\vjxdk\kpgll.exe start
1⤵
- Executes dropped EXE
PID:1784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2764 -ip 2764
1⤵
PID:3616

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Connection Proxy

1

T1090

Impact

Replay Monitor

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Downloads

C:\ProgramData\vjxdk\kpgll.exe
Filesize
89KB

MD5
754f68fbcd88c48a9c689632b66967c4

SHA1
fc20fe331d1699145df56ec11a95cb6d7f72279f

SHA256
6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c

SHA512
0b7e83826ec8a7599fd876590e8c096f71a034d56e34d138c4d29ac3bf8c512aecacebdd64a47ce5bf449a27802cf915a5a6a8ae251eb66a7262df1065a0f839

Download Submit
C:\ProgramData\vjxdk\kpgll.exe
Filesize
89KB

MD5
754f68fbcd88c48a9c689632b66967c4

SHA1
fc20fe331d1699145df56ec11a95cb6d7f72279f

SHA256
6bc401f2d24746bb192fb23fcaf705b94b7f6742b9d651266345bbab434e351c

SHA512
0b7e83826ec8a7599fd876590e8c096f71a034d56e34d138c4d29ac3bf8c512aecacebdd64a47ce5bf449a27802cf915a5a6a8ae251eb66a7262df1065a0f839

Download Submit
memory/1784-135-0x00000000032C3000-0x00000000032C9000-memory.dmp

Filesize
24KB

Download
memory/1784-136-0x00000000030F0000-0x00000000030F9000-memory.dmp

Filesize
36KB

Download
memory/1784-137-0x0000000000400000-0x0000000002FA2000-memory.dmp

Filesize
43.6MB

Download
memory/2764-130-0x0000000003128000-0x000000000312F000-memory.dmp

Filesize
28KB

Download
memory/2764-131-0x0000000003100000-0x0000000003109000-memory.dmp

Filesize
36KB

Download
memory/2764-132-0x0000000000400000-0x0000000002FA2000-memory.dmp

Filesize
43.6MB

Download

Analysis

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