systembc | 6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c

General

Target

6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe
Size

316KB
MD5

afbea4a6f073cac89a9f3cd6df0844a3
SHA1

3517690fa2065239a6ad49abcf7153248d02cbf0
SHA256

6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c
SHA512

3bedf050bbc9ac1ceb059e30efa590fc2db85ef1f0961d36b8f443166ece56a8895755fe5bcbacf6a7a8a3928708b28a9885375ae28b97d9363fc8d90d99c99d

Score

10^/10

systembc suricata trojan

Malware Config

Extracted

Family

systembc

C2

sdadvert197.com:4044

mexstat128.com: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:

sfwxxx.exe

pid process

4952 sfwxxx.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

32 api.ipify.org
33 api.ipify.org
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Connection Proxy
T1090

pid	process
4952	sfwxxx.exe

flow	ioc
32	api.ipify.org
33	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe

description	ioc	process
File created	C:\Windows\Tasks\sfwxxx.job	6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe
File opened for modification	C:\Windows\Tasks\sfwxxx.job	6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2488 1700 WerFault.exe 6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe

pid	pid_target	process	target process
2488	1700	WerFault.exe	6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe

pid	process
1700	6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe
1700	6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe

C:\Users\Admin\AppData\Local\Temp\6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe
"C:\Users\Admin\AppData\Local\Temp\6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 488
2⤵
- Program crash
PID:2488

C:\ProgramData\tgcqxc\sfwxxx.exe
C:\ProgramData\tgcqxc\sfwxxx.exe start
1⤵
- Executes dropped EXE
PID:4952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1700 -ip 1700
1⤵
PID:3532

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\tgcqxc\sfwxxx.exe
Filesize
316KB

MD5
afbea4a6f073cac89a9f3cd6df0844a3

SHA1
3517690fa2065239a6ad49abcf7153248d02cbf0

SHA256
6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c

SHA512
3bedf050bbc9ac1ceb059e30efa590fc2db85ef1f0961d36b8f443166ece56a8895755fe5bcbacf6a7a8a3928708b28a9885375ae28b97d9363fc8d90d99c99d

Download Submit
C:\ProgramData\tgcqxc\sfwxxx.exe
Filesize
316KB

MD5
afbea4a6f073cac89a9f3cd6df0844a3

SHA1
3517690fa2065239a6ad49abcf7153248d02cbf0

SHA256
6d952c5c8a586f51361a500fe63fdaa3432060987f6c3682c6510a716331cd2c

SHA512
3bedf050bbc9ac1ceb059e30efa590fc2db85ef1f0961d36b8f443166ece56a8895755fe5bcbacf6a7a8a3928708b28a9885375ae28b97d9363fc8d90d99c99d

Download Submit
memory/1700-130-0x0000000000DAA000-0x0000000000DB0000-memory.dmp

Filesize
24KB

Download
memory/1700-131-0x0000000000D80000-0x0000000000D89000-memory.dmp

Filesize
36KB

Download
memory/1700-132-0x0000000000400000-0x0000000000C2B000-memory.dmp

Filesize
8.2MB

Download
memory/4952-136-0x00000000001E0000-0x00000000001E9000-memory.dmp

Filesize
36KB

Download
memory/4952-135-0x0000000000DE5000-0x0000000000DEC000-memory.dmp

Filesize
28KB

Download
memory/4952-137-0x0000000000400000-0x0000000000C2B000-memory.dmp

Filesize
8.2MB

Download

Analysis

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