systembc | c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a

General

Target

c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe
Size

173KB
MD5

b116459b4baffd9c1efd7153884f9d35
SHA1

673fd7eb331a1c5645fa4264f85bbd722531f318
SHA256

c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a
SHA512

6f09a7b7be8a3f4519492d387e2c1441e70cc411eafb2e463ce0f0b802e9b672a60895b778a27adaa5a55d9fd35c3285a342658ca77cd1240c026efb10eea1aa

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

C2

dec15coma.com:4039

dec15coma.xyz:4039

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 1 IoCs

Processes:

lbebx.exe

pid process

4292 lbebx.exe

pid	process
4292	lbebx.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\ProgramData\pmqx\lbebx.exe	upx
C:\ProgramData\pmqx\lbebx.exe	upx

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

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

Connection Proxy
T1090

flow	ioc
18	api.ipify.org
17	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe

description	ioc	process
File created	C:\Windows\Tasks\lbebx.job	c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe
File opened for modification	C:\Windows\Tasks\lbebx.job	c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1844 2576 WerFault.exe c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe

pid	pid_target	process	target process
1844	2576	WerFault.exe	c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe

pid	process
2576	c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe
2576	c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe

C:\Users\Admin\AppData\Local\Temp\c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe
"C:\Users\Admin\AppData\Local\Temp\c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2576 -s 948
2⤵
- Program crash
PID:1844

C:\ProgramData\pmqx\lbebx.exe
C:\ProgramData\pmqx\lbebx.exe start
1⤵
- Executes dropped EXE
PID:4292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2576 -ip 2576
1⤵
PID:2352

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

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Downloads

C:\ProgramData\pmqx\lbebx.exe
MD5
b116459b4baffd9c1efd7153884f9d35

SHA1
673fd7eb331a1c5645fa4264f85bbd722531f318

SHA256
c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a

SHA512
6f09a7b7be8a3f4519492d387e2c1441e70cc411eafb2e463ce0f0b802e9b672a60895b778a27adaa5a55d9fd35c3285a342658ca77cd1240c026efb10eea1aa

Download Submit
C:\ProgramData\pmqx\lbebx.exe
MD5
b116459b4baffd9c1efd7153884f9d35

SHA1
673fd7eb331a1c5645fa4264f85bbd722531f318

SHA256
c37e79057ccdd18492554cfb1d86d77a69667ce2a8b0841d560f12eb479f356a

SHA512
6f09a7b7be8a3f4519492d387e2c1441e70cc411eafb2e463ce0f0b802e9b672a60895b778a27adaa5a55d9fd35c3285a342658ca77cd1240c026efb10eea1aa

Download Submit
memory/2576-130-0x0000000000030000-0x0000000000036000-memory.dmp

Filesize
24KB

Download
memory/2576-131-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/2576-132-0x0000000000400000-0x00000000047B7000-memory.dmp

Filesize
67.7MB

Download
memory/4292-135-0x0000000000400000-0x00000000047B7000-memory.dmp

Filesize
67.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads