systembc | 67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4

General

Target

67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe
Size

90KB
MD5

92dbe3d237c0b38a6feaece08bf7a1f6
SHA1

5eeda1c31858de743f8afa7ce6c24c8c0e816c7d
SHA256

67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4
SHA512

fe5f35f485dc2a675374c2581ea8a0bb92f88ef43d225e0f53d57bed6587fd73a8554cd946af252f1557e3e8573c00c43929c31e9e32258aae2b49e538c6494d

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:

tcfa.exe

pid process

2968 tcfa.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

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

Connection Proxy
T1090

pid	process
2968	tcfa.exe

flow	ioc
48	api.ipify.org
47	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe

description	ioc	process
File created	C:\Windows\Tasks\tcfa.job	67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe
File opened for modification	C:\Windows\Tasks\tcfa.job	67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3192 1088 WerFault.exe 67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe

pid	pid_target	process	target process
3192	1088	WerFault.exe	67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe

pid	process
1088	67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe
1088	67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe

C:\Users\Admin\AppData\Local\Temp\67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe
"C:\Users\Admin\AppData\Local\Temp\67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 952
2⤵
- Program crash
PID:3192

C:\ProgramData\qvvmtk\tcfa.exe
C:\ProgramData\qvvmtk\tcfa.exe start
1⤵
- Executes dropped EXE
PID:2968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1088 -ip 1088
1⤵
PID:3304

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\qvvmtk\tcfa.exe
Filesize
90KB

MD5
92dbe3d237c0b38a6feaece08bf7a1f6

SHA1
5eeda1c31858de743f8afa7ce6c24c8c0e816c7d

SHA256
67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4

SHA512
fe5f35f485dc2a675374c2581ea8a0bb92f88ef43d225e0f53d57bed6587fd73a8554cd946af252f1557e3e8573c00c43929c31e9e32258aae2b49e538c6494d

Download Submit
C:\ProgramData\qvvmtk\tcfa.exe
Filesize
90KB

MD5
92dbe3d237c0b38a6feaece08bf7a1f6

SHA1
5eeda1c31858de743f8afa7ce6c24c8c0e816c7d

SHA256
67713ae5aac48a69c97bcb8dbc6db59518a3b7c60ce57ab48c1883bd995bf7d4

SHA512
fe5f35f485dc2a675374c2581ea8a0bb92f88ef43d225e0f53d57bed6587fd73a8554cd946af252f1557e3e8573c00c43929c31e9e32258aae2b49e538c6494d

Download Submit
memory/1088-130-0x00000000011F2000-0x00000000011F8000-memory.dmp

Filesize
24KB

Download
memory/1088-131-0x0000000000030000-0x0000000000039000-memory.dmp

Filesize
36KB

Download
memory/1088-132-0x0000000000400000-0x0000000000F74000-memory.dmp

Filesize
11.5MB

Download
memory/2968-135-0x000000000123D000-0x0000000001244000-memory.dmp

Filesize
28KB

Download
memory/2968-136-0x0000000000030000-0x0000000000039000-memory.dmp

Filesize
36KB

Download
memory/2968-137-0x0000000000400000-0x0000000000F74000-memory.dmp

Filesize
11.5MB

Download

Analysis

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