systembc | f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2

General

Target

f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe
Size

234KB
MD5

32990c51bb03c767c66472ea067e6d0c
SHA1

cc1f2bc671013ca140189b2314f71bdf35af2167
SHA256

f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2
SHA512

2f7552269dcd22ab9401d77e4d6679e71814e138662b80838b913844345e390d79864929d9037f8d206643d7c82698dd6d964e96312b291c7a368e3007c67d12

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:

lvbsb.exe

pid process

2772 lvbsb.exe

pid	process
2772	lvbsb.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
C:\ProgramData\oxpasd\lvbsb.exe	upx
C:\ProgramData\oxpasd\lvbsb.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
19 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
19	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe

description	ioc	process
File created	C:\Windows\Tasks\lvbsb.job	f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe
File opened for modification	C:\Windows\Tasks\lvbsb.job	f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4020 2008 WerFault.exe f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe

pid	pid_target	process	target process
4020	2008	WerFault.exe	f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe

pid	process
2008	f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe
2008	f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe

C:\Users\Admin\AppData\Local\Temp\f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe
"C:\Users\Admin\AppData\Local\Temp\f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2008 -s 948
2⤵
- Program crash
PID:4020

C:\ProgramData\oxpasd\lvbsb.exe
C:\ProgramData\oxpasd\lvbsb.exe start
1⤵
- Executes dropped EXE
PID:2772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2008 -ip 2008
1⤵
PID:1680

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\oxpasd\lvbsb.exe
MD5
32990c51bb03c767c66472ea067e6d0c

SHA1
cc1f2bc671013ca140189b2314f71bdf35af2167

SHA256
f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2

SHA512
2f7552269dcd22ab9401d77e4d6679e71814e138662b80838b913844345e390d79864929d9037f8d206643d7c82698dd6d964e96312b291c7a368e3007c67d12

Download Submit
C:\ProgramData\oxpasd\lvbsb.exe
MD5
32990c51bb03c767c66472ea067e6d0c

SHA1
cc1f2bc671013ca140189b2314f71bdf35af2167

SHA256
f4bcf65872fdee88023c7b005e860dee157c549ee1db7e67a160091b713788f2

SHA512
2f7552269dcd22ab9401d77e4d6679e71814e138662b80838b913844345e390d79864929d9037f8d206643d7c82698dd6d964e96312b291c7a368e3007c67d12

Download Submit
memory/2008-130-0x0000000005292000-0x0000000005299000-memory.dmp

Filesize
28KB

Download
memory/2008-131-0x0000000005292000-0x0000000005299000-memory.dmp

Filesize
28KB

Download
memory/2008-132-0x0000000000030000-0x0000000000039000-memory.dmp

Filesize
36KB

Download
memory/2008-133-0x0000000000400000-0x0000000005163000-memory.dmp

Filesize
77.4MB

Download
memory/2772-136-0x00000000052AD000-0x00000000052B4000-memory.dmp

Filesize
28KB

Download
memory/2772-137-0x00000000052AD000-0x00000000052B4000-memory.dmp

Filesize
28KB

Download
memory/2772-138-0x0000000000400000-0x0000000005163000-memory.dmp

Filesize
77.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads