systembc | dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab

General

Target

dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe
Size

129KB
MD5

45c62274159056d7565d64faff15929e
SHA1

de96ebb4ca03273244dcd44ae140a0db52a7dfa2
SHA256

dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab
SHA512

81a2abd0d43463575f0db6885c9809bbdb462442a3675d3c825890d46064ada69a70cf4a6f73c75160565a768eb6eaad7a6f462f77d64e75ec1c70524c9f3b7a

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:

eimdax.exe

pid process

804 eimdax.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

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

Connection Proxy
T1090

pid	process
804	eimdax.exe

flow	ioc
44	api.ipify.org
45	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe

description	ioc	process
File created	C:\Windows\Tasks\eimdax.job	dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe
File opened for modification	C:\Windows\Tasks\eimdax.job	dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

740 3384 WerFault.exe dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe

pid	pid_target	process	target process
740	3384	WerFault.exe	dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe

pid	process
3384	dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe
3384	dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe

C:\Users\Admin\AppData\Local\Temp\dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe
"C:\Users\Admin\AppData\Local\Temp\dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:3384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3384 -s 484
2⤵
- Program crash
PID:740

C:\ProgramData\kxrdf\eimdax.exe
C:\ProgramData\kxrdf\eimdax.exe start
1⤵
- Executes dropped EXE
PID:804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3384 -ip 3384
1⤵
PID:5020

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

Loading Replay Monitor...

Downloads

C:\ProgramData\kxrdf\eimdax.exe
Filesize
129KB

MD5
45c62274159056d7565d64faff15929e

SHA1
de96ebb4ca03273244dcd44ae140a0db52a7dfa2

SHA256
dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab

SHA512
81a2abd0d43463575f0db6885c9809bbdb462442a3675d3c825890d46064ada69a70cf4a6f73c75160565a768eb6eaad7a6f462f77d64e75ec1c70524c9f3b7a

Download Submit
C:\ProgramData\kxrdf\eimdax.exe
Filesize
129KB

MD5
45c62274159056d7565d64faff15929e

SHA1
de96ebb4ca03273244dcd44ae140a0db52a7dfa2

SHA256
dbe74212670f3e8b68dd6107f659c4de2be4dd68aab6f9446956e8f425bb2aab

SHA512
81a2abd0d43463575f0db6885c9809bbdb462442a3675d3c825890d46064ada69a70cf4a6f73c75160565a768eb6eaad7a6f462f77d64e75ec1c70524c9f3b7a

Download Submit
memory/804-135-0x0000000000B03000-0x0000000000B09000-memory.dmp

Filesize
24KB

Download
memory/804-136-0x0000000001090000-0x0000000001099000-memory.dmp

Filesize
36KB

Download
memory/804-137-0x0000000000400000-0x00000000007DD000-memory.dmp

Filesize
3.9MB

Download
memory/3384-130-0x0000000000A48000-0x0000000000A4F000-memory.dmp

Filesize
28KB

Download
memory/3384-131-0x00000000023D0000-0x00000000023D9000-memory.dmp

Filesize
36KB

Download
memory/3384-132-0x0000000000400000-0x00000000007DD000-memory.dmp

Filesize
3.9MB

Download

Analysis

Sharing