systembc | a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61

General

Target

a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe
Size

91KB
MD5

a2d3b46eda5ac1fa3e13d132cc8f57f0
SHA1

5f816267f2d1c0d32df65e85f6582673a7070f19
SHA256

a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61
SHA512

7127703dfe4d39e0b3fc59583cc322b517f40530170ef4936452a85618f2db97f65b4063b6c40d554c0719b440e7919e9ee9d56bd93bcf37420c90f10f4d1e8c

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:

gjsxb.exe

pid process

2028 gjsxb.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

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

Connection Proxy
T1090

pid	process
2028	gjsxb.exe

flow	ioc
8	api.ipify.org
9	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe

description	ioc	process
File created	C:\Windows\Tasks\gjsxb.job	a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe
File opened for modification	C:\Windows\Tasks\gjsxb.job	a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2888 2056 WerFault.exe a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe

pid	pid_target	process	target process
2888	2056	WerFault.exe	a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe

pid	process
2056	a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe
2056	a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe

C:\Users\Admin\AppData\Local\Temp\a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe
"C:\Users\Admin\AppData\Local\Temp\a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2056 -s 484
2⤵
- Program crash
PID:2888

C:\ProgramData\vinpd\gjsxb.exe
C:\ProgramData\vinpd\gjsxb.exe start
1⤵
- Executes dropped EXE
PID:2028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2056 -ip 2056
1⤵
PID:2652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Connection Proxy

1

T1090

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Connection Proxy

1

T1090

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\vinpd\gjsxb.exe
Filesize
91KB

MD5
a2d3b46eda5ac1fa3e13d132cc8f57f0

SHA1
5f816267f2d1c0d32df65e85f6582673a7070f19

SHA256
a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61

SHA512
7127703dfe4d39e0b3fc59583cc322b517f40530170ef4936452a85618f2db97f65b4063b6c40d554c0719b440e7919e9ee9d56bd93bcf37420c90f10f4d1e8c

Download Submit
C:\ProgramData\vinpd\gjsxb.exe
Filesize
91KB

MD5
a2d3b46eda5ac1fa3e13d132cc8f57f0

SHA1
5f816267f2d1c0d32df65e85f6582673a7070f19

SHA256
a7c6a1d224cf00ada45c4db86f9080e25965513f85c6ecd7b8d8d9c847b36c61

SHA512
7127703dfe4d39e0b3fc59583cc322b517f40530170ef4936452a85618f2db97f65b4063b6c40d554c0719b440e7919e9ee9d56bd93bcf37420c90f10f4d1e8c

Download Submit
memory/2028-136-0x0000000003032000-0x0000000003039000-memory.dmp

Filesize
28KB

Download
memory/2028-137-0x0000000003032000-0x0000000003039000-memory.dmp

Filesize
28KB

Download
memory/2028-138-0x0000000002FF0000-0x0000000002FF9000-memory.dmp

Filesize
36KB

Download
memory/2028-139-0x0000000000400000-0x0000000002FA1000-memory.dmp

Filesize
43.6MB

Download
memory/2056-130-0x0000000003378000-0x000000000337F000-memory.dmp

Filesize
28KB

Download
memory/2056-131-0x0000000003378000-0x000000000337F000-memory.dmp

Filesize
28KB

Download
memory/2056-132-0x00000000030F0000-0x00000000030F9000-memory.dmp

Filesize
36KB

Download
memory/2056-133-0x0000000000400000-0x0000000002FA1000-memory.dmp

Filesize
43.6MB

Download

Analysis

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