systembc | c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676

General

Target

c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe
Size

106KB
MD5

85fc0168e19390f9799ab42bfb1e3879
SHA1

25c56170f447f87f7fa8f2cf6a94c2916fc98047
SHA256

c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676
SHA512

852a3dd7cf1734ccd60808a9d60e771bb158a777464dc6cf53392fca098a4be97cf36d04a7955a694b8f4ce19e8232492fb4d56083ac16d7f4cded47dff581c1

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:

idtup.exe

pid process

2708 idtup.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

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

Connection Proxy
T1090

pid	process
2708	idtup.exe

flow	ioc
33	api.ipify.org
35	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe

description	ioc	process
File created	C:\Windows\Tasks\idtup.job	c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe
File opened for modification	C:\Windows\Tasks\idtup.job	c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

204 452 WerFault.exe c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe

pid	pid_target	process	target process
204	452	WerFault.exe	c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe

pid	process
452	c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe
452	c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe

C:\Users\Admin\AppData\Local\Temp\c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe
"C:\Users\Admin\AppData\Local\Temp\c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 484
2⤵
- Program crash
PID:204

C:\ProgramData\bkrpvaq\idtup.exe
C:\ProgramData\bkrpvaq\idtup.exe start
1⤵
- Executes dropped EXE
PID:2708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 452 -ip 452
1⤵
PID:4252

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\bkrpvaq\idtup.exe
Filesize
106KB

MD5
85fc0168e19390f9799ab42bfb1e3879

SHA1
25c56170f447f87f7fa8f2cf6a94c2916fc98047

SHA256
c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676

SHA512
852a3dd7cf1734ccd60808a9d60e771bb158a777464dc6cf53392fca098a4be97cf36d04a7955a694b8f4ce19e8232492fb4d56083ac16d7f4cded47dff581c1

Download Submit
C:\ProgramData\bkrpvaq\idtup.exe
Filesize
106KB

MD5
85fc0168e19390f9799ab42bfb1e3879

SHA1
25c56170f447f87f7fa8f2cf6a94c2916fc98047

SHA256
c3c48782f893bd61e1102c3095b8c3f7ed842e3e6889ee026d581c5dd1637676

SHA512
852a3dd7cf1734ccd60808a9d60e771bb158a777464dc6cf53392fca098a4be97cf36d04a7955a694b8f4ce19e8232492fb4d56083ac16d7f4cded47dff581c1

Download Submit
memory/452-130-0x00000000007F9000-0x0000000000800000-memory.dmp

Filesize
28KB

Download
memory/452-131-0x0000000000770000-0x0000000000779000-memory.dmp

Filesize
36KB

Download
memory/452-132-0x0000000000400000-0x00000000004D5000-memory.dmp

Filesize
852KB

Download
memory/2708-135-0x0000000000693000-0x0000000000699000-memory.dmp

Filesize
24KB

Download
memory/2708-136-0x0000000000400000-0x00000000004D5000-memory.dmp

Filesize
852KB

Download

Analysis

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