systembc | 2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9

General

Target

2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe
Size

263KB
MD5

98074264b902c847f5bc9ca28b0bd690
SHA1

94c72ed82e131caff62f88fe1e5a611f4c007beb
SHA256

2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9
SHA512

6a00287dadf57a002ca281c9a2349caf0a4bf6ed6510ab77d973a5331f31d12616b903c93ee54e7ef226271f6c256f086aec7572510fbcc4f0fc6503d090a1b1

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:

cjgms.exe

pid process

3928 cjgms.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

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

Connection Proxy
T1090

pid	process
3928	cjgms.exe

flow	ioc
122	api.ipify.org
121	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe

description	ioc	process
File created	C:\Windows\Tasks\cjgms.job	2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe
File opened for modification	C:\Windows\Tasks\cjgms.job	2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1740 2732 WerFault.exe 2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe

pid	pid_target	process	target process
1740	2732	WerFault.exe	2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe

pid	process
2732	2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe
2732	2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe

C:\Users\Admin\AppData\Local\Temp\2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe
"C:\Users\Admin\AppData\Local\Temp\2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 968
2⤵
- Program crash
PID:1740

C:\ProgramData\tdug\cjgms.exe
C:\ProgramData\tdug\cjgms.exe start
1⤵
- Executes dropped EXE
PID:3928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2732 -ip 2732
1⤵
PID:3392

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\tdug\cjgms.exe
Filesize
263KB

MD5
98074264b902c847f5bc9ca28b0bd690

SHA1
94c72ed82e131caff62f88fe1e5a611f4c007beb

SHA256
2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9

SHA512
6a00287dadf57a002ca281c9a2349caf0a4bf6ed6510ab77d973a5331f31d12616b903c93ee54e7ef226271f6c256f086aec7572510fbcc4f0fc6503d090a1b1

Download Submit
C:\ProgramData\tdug\cjgms.exe
Filesize
263KB

MD5
98074264b902c847f5bc9ca28b0bd690

SHA1
94c72ed82e131caff62f88fe1e5a611f4c007beb

SHA256
2dc9d1c67be6bd53a8a27d3e76a65bcb177d9b7e2a8858e87e4742f22b4bffa9

SHA512
6a00287dadf57a002ca281c9a2349caf0a4bf6ed6510ab77d973a5331f31d12616b903c93ee54e7ef226271f6c256f086aec7572510fbcc4f0fc6503d090a1b1

Download Submit
memory/2732-124-0x0000000000030000-0x0000000000036000-memory.dmp

Filesize
24KB

Download
memory/2732-125-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/2732-126-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/3928-129-0x0000000000030000-0x0000000000036000-memory.dmp

Filesize
24KB

Download
memory/3928-130-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/3928-131-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download

Analysis

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