systembc | 8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0

General

Target

8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe
Size

233KB
MD5

cc16e6e7af14fcf5f4a001b85930dc8f
SHA1

580b5baff09663396fb27d52e43a58ef25ed43dd
SHA256

8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0
SHA512

c451ec2e3056086842b52e8105a04a67a50609d1e8a7c296e7171432ccc5572c62e69b1edb8d6e600ddb451240847ba4d8621452ea99e98036978cc3712274d9

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:

mnbg.exe

pid process

1004 mnbg.exe

pid	process
1004	mnbg.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
C:\ProgramData\grsv\mnbg.exe	upx
C:\ProgramData\grsv\mnbg.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

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

Connection Proxy
T1090

flow	ioc
64	api.ipify.org
65	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe

description	ioc	process
File opened for modification	C:\Windows\Tasks\mnbg.job	8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe
File created	C:\Windows\Tasks\mnbg.job	8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3636 1772 WerFault.exe 8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe

pid	pid_target	process	target process
3636	1772	WerFault.exe	8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe

pid	process
1772	8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe
1772	8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe

C:\Users\Admin\AppData\Local\Temp\8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe
"C:\Users\Admin\AppData\Local\Temp\8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1772 -s 948
2⤵
- Program crash
PID:3636

C:\ProgramData\grsv\mnbg.exe
C:\ProgramData\grsv\mnbg.exe start
1⤵
- Executes dropped EXE
PID:1004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1772 -ip 1772
1⤵
PID:2324

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\grsv\mnbg.exe
MD5
cc16e6e7af14fcf5f4a001b85930dc8f

SHA1
580b5baff09663396fb27d52e43a58ef25ed43dd

SHA256
8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0

SHA512
c451ec2e3056086842b52e8105a04a67a50609d1e8a7c296e7171432ccc5572c62e69b1edb8d6e600ddb451240847ba4d8621452ea99e98036978cc3712274d9

Download Submit
C:\ProgramData\grsv\mnbg.exe
MD5
cc16e6e7af14fcf5f4a001b85930dc8f

SHA1
580b5baff09663396fb27d52e43a58ef25ed43dd

SHA256
8e6dd1a50d58aef4a86f76c340f6a36faee0ec4f97886978d43a870be5b508f0

SHA512
c451ec2e3056086842b52e8105a04a67a50609d1e8a7c296e7171432ccc5572c62e69b1edb8d6e600ddb451240847ba4d8621452ea99e98036978cc3712274d9

Download Submit
memory/1004-140-0x000000000538D000-0x0000000005394000-memory.dmp

Filesize
28KB

Download
memory/1004-141-0x000000000538D000-0x0000000005394000-memory.dmp

Filesize
28KB

Download
memory/1004-142-0x0000000000030000-0x0000000000039000-memory.dmp

Filesize
36KB

Download
memory/1004-143-0x0000000000400000-0x0000000005163000-memory.dmp

Filesize
77.4MB

Download
memory/1772-134-0x0000000005252000-0x0000000005259000-memory.dmp

Filesize
28KB

Download
memory/1772-135-0x0000000005252000-0x0000000005259000-memory.dmp

Filesize
28KB

Download
memory/1772-136-0x0000000000030000-0x0000000000039000-memory.dmp

Filesize
36KB

Download
memory/1772-137-0x0000000000400000-0x0000000005163000-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