Malware Analysis Report

2024-11-13 17:16

Sample ID 231221-1r4tbscda4
Target 08c751edec7a3ae530ac34bd90e31445
SHA256 d7d2a183cb22b8327d1a46c2c5d13f45a488234fd51fa4b355b6b53144495db8
Tags
systembc trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d7d2a183cb22b8327d1a46c2c5d13f45a488234fd51fa4b355b6b53144495db8

Threat Level: Known bad

The file 08c751edec7a3ae530ac34bd90e31445 was found to be: Known bad.

Malicious Activity Summary

systembc trojan

Systembc family

SystemBC

Executes dropped EXE

Looks up external IP address via web service

Uses Tor communications

Drops file in Windows directory

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-21 21:53

Signatures

Systembc family

systembc

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-21 21:53

Reported

2023-12-21 23:46

Platform

win7-20231215-en

Max time kernel

150s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\exgnh\anmnn.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A ip4.seeip.org N/A N/A
N/A ip4.seeip.org N/A N/A
N/A api.ipify.org N/A N/A

Uses Tor communications

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\anmnn.job C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe N/A
File opened for modification C:\Windows\Tasks\anmnn.job C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2680 wrote to memory of 2812 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\exgnh\anmnn.exe
PID 2680 wrote to memory of 2812 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\exgnh\anmnn.exe
PID 2680 wrote to memory of 2812 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\exgnh\anmnn.exe
PID 2680 wrote to memory of 2812 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\exgnh\anmnn.exe

Processes

C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe

"C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {4652472E-3F3C-4625-BB4F-835600F569C8} S-1-5-18:NT AUTHORITY\System:Service:

C:\ProgramData\exgnh\anmnn.exe

C:\ProgramData\exgnh\anmnn.exe start

Network

Country Destination Domain Proto
GB 80.85.84.79:4001 tcp
GB 80.85.84.79:4001 tcp
US 8.8.8.8:53 api.ipify.org udp
US 104.237.62.212:443 api.ipify.org tcp
US 8.8.8.8:53 ip4.seeip.org udp
US 23.128.64.141:443 ip4.seeip.org tcp
US 204.13.164.118:80 204.13.164.118 tcp
US 45.32.80.44:9001 tcp
DE 85.215.236.203:443 tcp
DE 82.165.10.153:443 tcp
ID 113.20.28.216:9001 tcp
FR 82.65.123.107:9001 tcp
DE 37.221.192.175:9001 tcp
DE 89.245.43.114:8443 tcp
DE 193.23.244.244:80 193.23.244.244 tcp
US 100.19.12.107:34567 tcp
US 216.146.27.106:9001 tcp
NZ 103.193.138.6:9001 tcp
DE 212.227.206.135:443 tcp
US 198.98.52.83:9001 tcp
VN 27.74.170.90:443 tcp
MD 5.181.158.12:9054 tcp
FI 65.109.26.110:9003 tcp
LV 88.135.149.168:9090 tcp
US 209.127.119.162:443 tcp
LU 107.189.3.146:9001 tcp
PL 185.241.208.101:143 tcp
DE 193.23.244.244:80 193.23.244.244 tcp
DE 92.116.186.75:9002 tcp
US 50.116.10.191:9001 tcp
MT 78.133.12.151:8832 tcp
NL 51.15.44.251:444 tcp
CH 81.6.46.82:9001 tcp
GB 78.150.218.156:443 tcp
US 206.217.139.100:443 tcp
PL 185.241.208.218:443 tcp
PL 193.111.26.37:443 tcp
PL 95.214.53.96:8445 tcp
NL 185.67.45.76:9001 tcp
HR 45.95.169.124:27111 tcp
DE 193.23.244.244:80 193.23.244.244 tcp
CH 195.15.242.99:9001 tcp
CA 209.35.32.109:9001 tcp
DE 193.23.244.244:80 193.23.244.244 tcp
ES 87.106.229.129:443 tcp
GB 77.68.91.61:443 tcp
FR 45.158.77.29:9000 tcp
RO 90.95.59.134:9001 tcp
DE 193.23.244.244:80 193.23.244.244 tcp
RO 2.57.122.179:9700 tcp
DE 95.179.160.189:9001 tcp
LV 89.201.3.61:49727 tcp
AU 51.161.163.150:443 tcp
CA 149.56.130.187:443 tcp
N/A 136.243.93.102:143 tcp
N/A 38.180.23.25:443 tcp
N/A 89.58.43.207:9001 tcp
N/A 15.204.234.61:9100 tcp

Files

C:\ProgramData\exgnh\anmnn.exe

MD5 08c751edec7a3ae530ac34bd90e31445
SHA1 13dace12ba3b0c2733fd9a5c041e469627b4cffc
SHA256 d7d2a183cb22b8327d1a46c2c5d13f45a488234fd51fa4b355b6b53144495db8
SHA512 44e5d2f1bf28ce7fb21dff8ce92e34e34c74c7edb4ba8e6c809c2fe1d5134c97ecc84291367ce496dd4047d78a26bb70007c3be4b61a1b24ce966807d46bfd67

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-21 21:53

Reported

2023-12-21 23:47

Platform

win10v2004-20231215-en

Max time kernel

167s

Max time network

175s

Command Line

"C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\cudoa\mhop.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A

Uses Tor communications

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\mhop.job C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe N/A
File opened for modification C:\Windows\Tasks\mhop.job C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe

"C:\Users\Admin\AppData\Local\Temp\08c751edec7a3ae530ac34bd90e31445.exe"

C:\ProgramData\cudoa\mhop.exe

C:\ProgramData\cudoa\mhop.exe start

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 85.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
GB 80.85.84.79:4001 tcp
GB 80.85.84.79:4001 tcp
US 8.8.8.8:53 api.ipify.org udp
US 104.237.62.212:443 api.ipify.org tcp
US 128.31.0.39:9131 tcp
US 8.8.8.8:53 212.62.237.104.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
CA 199.58.81.140:80 199.58.81.140 tcp
US 8.8.8.8:53 140.81.58.199.in-addr.arpa udp
US 174.67.28.137:9021 tcp
US 8.8.8.8:53 137.28.67.174.in-addr.arpa udp
DE 193.23.244.244:80 193.23.244.244 tcp
US 73.41.44.199:9001 tcp
US 8.8.8.8:53 244.244.23.193.in-addr.arpa udp
US 8.8.8.8:53 199.44.41.73.in-addr.arpa udp
DE 193.23.244.244:80 193.23.244.244 tcp
NL 51.158.201.235:8080 tcp
DE 193.23.244.244:80 193.23.244.244 tcp
DE 193.148.249.205:9001 tcp
US 8.8.8.8:53 235.201.158.51.in-addr.arpa udp
US 8.8.8.8:53 205.249.148.193.in-addr.arpa udp
DE 193.23.244.244:80 193.23.244.244 tcp
IT 80.211.74.173:443 tcp
US 8.8.8.8:53 173.74.211.80.in-addr.arpa udp
US 8.8.8.8:53 226.162.46.104.in-addr.arpa udp
DE 193.23.244.244:80 193.23.244.244 tcp
CA 159.203.29.240:9001 tcp
US 8.8.8.8:53 240.29.203.159.in-addr.arpa udp
DE 193.23.244.244:80 193.23.244.244 tcp
US 96.30.193.113:9001 tcp
US 8.8.8.8:53 113.193.30.96.in-addr.arpa udp
DE 193.23.244.244:80 193.23.244.244 tcp
SE 185.130.45.92:8787 tcp
US 8.8.8.8:53 92.45.130.185.in-addr.arpa udp
DE 193.23.244.244:80 193.23.244.244 tcp
RU 46.29.234.27:443 tcp
US 8.8.8.8:53 27.234.29.46.in-addr.arpa udp
DE 193.23.244.244:80 193.23.244.244 tcp
CA 51.79.67.109:9001 tcp
US 8.8.8.8:53 109.67.79.51.in-addr.arpa udp

Files

C:\ProgramData\cudoa\mhop.exe

MD5 08c751edec7a3ae530ac34bd90e31445
SHA1 13dace12ba3b0c2733fd9a5c041e469627b4cffc
SHA256 d7d2a183cb22b8327d1a46c2c5d13f45a488234fd51fa4b355b6b53144495db8
SHA512 44e5d2f1bf28ce7fb21dff8ce92e34e34c74c7edb4ba8e6c809c2fe1d5134c97ecc84291367ce496dd4047d78a26bb70007c3be4b61a1b24ce966807d46bfd67