systembc | 83accd1cbe7ed2c6db27dcc000e940ab475b40dec95847779cc47905aaa909ea

max time kernel
1793s
max time network
1794s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
09/04/2024, 08:13

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

sample.exe
Size

171KB
MD5

8e3a80163ebba090c69ecdeec8860c8b
SHA1

3beb3fdd46f78d54c19f5d66f46172d6f5cde830
SHA256

c68035aabbe9b80ace209290aa28b8108cbb03a9d6a6301eb9a8d638db024ad0
SHA512

fe327e9f59d87f333ec0b2fcae916f41af8e5df5edaa2a2085e7998f3903746ad7de8b891f553b81d44ee49098de3105fae24e380c540b50c78a96ffc859da03
SSDEEP

3072:PGq7Cm2r13QuGGz7qr+qf8v0knEyc9TXA2J:Pj7jmGqqrlfGDcfJ

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

admex175x.xyz:4044

servx278x.xyz:4044

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc

Executes dropped EXE 1 IoCs

pid	Process
3984	carehk.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000800000001ac28-6.dat	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.

flow	ioc
6	api.ipify.org
7	api.ipify.org

Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.

Proxy
T1090

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\carehk.job	sample.exe
File opened for modification	C:\Windows\Tasks\carehk.job	sample.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2688	sample.exe
2688	sample.exe

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2688

C:\ProgramData\rjoanx\carehk.exe
C:\ProgramData\rjoanx\carehk.exe start
1⤵
- Executes dropped EXE
PID:3984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Proxy

T1090

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\rjoanx\carehk.exe

Filesize
171KB

MD5
8e3a80163ebba090c69ecdeec8860c8b

SHA1
3beb3fdd46f78d54c19f5d66f46172d6f5cde830

SHA256
c68035aabbe9b80ace209290aa28b8108cbb03a9d6a6301eb9a8d638db024ad0

SHA512
fe327e9f59d87f333ec0b2fcae916f41af8e5df5edaa2a2085e7998f3903746ad7de8b891f553b81d44ee49098de3105fae24e380c540b50c78a96ffc859da03

Download Submit
memory/2688-1-0x0000000005430000-0x0000000005530000-memory.dmp

Filesize
1024KB

Download
memory/2688-2-0x0000000005280000-0x0000000005289000-memory.dmp

Filesize
36KB

Download
memory/2688-9-0x0000000000400000-0x0000000005162000-memory.dmp

Filesize
77.4MB

Download
memory/2688-14-0x0000000005430000-0x0000000005530000-memory.dmp

Filesize
1024KB

Download
memory/3984-10-0x0000000005280000-0x0000000005380000-memory.dmp

Filesize
1024KB

Download
memory/3984-11-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/3984-13-0x0000000000400000-0x0000000005162000-memory.dmp

Filesize
77.4MB

Download
memory/3984-17-0x0000000005280000-0x0000000005380000-memory.dmp

Filesize
1024KB

Download