systembc | a0a5ebd512b7685798ac966c0b05415df9eff585a79af11c9ff99d7aa17e2101

max time kernel
1794s
max time network
1797s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
10-04-2024 05:02

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General

Target

2579be109c1035cb96942951710020a8.exe
Size

147KB
MD5

2579be109c1035cb96942951710020a8
SHA1

6987472967c8ce5e3d5fd6730a9da2964afacd10
SHA256

a0a5ebd512b7685798ac966c0b05415df9eff585a79af11c9ff99d7aa17e2101
SHA512

191ea3d7edc69f1cb9d1ec4967074667c5e1c6b02fdaa8bbc5a4414bf5ca00ccafadc49670c5b3065133915d78e482572545f1d0c8c3382e6a767c1f08a33a21
SSDEEP

3072:9NuSXw/c4JHdNX8PAzCABaxg0r27f8EjQspDNJJAksa:9oSXw/hfNXmAzbYg02Ok

Score

10^/10

systembc trojan upx

Malware Config

Extracted

Family

systembc

advertspace10.club:4044

logstat17.club:4044

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
5096	euiqwdl.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5084-0-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral2/memory/5084-2-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral2/memory/5084-4-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral2/memory/5084-7-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral2/files/0x000800000001abbb-14.dat	upx
behavioral2/memory/5096-18-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral2/memory/5096-22-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral2/memory/5096-29-0x0000000000400000-0x000000000044D000-memory.dmp	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\euiqwdl.job	2579be109c1035cb96942951710020a8.exe
File opened for modification	C:\Windows\Tasks\euiqwdl.job	2579be109c1035cb96942951710020a8.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5084	2579be109c1035cb96942951710020a8.exe
5084	2579be109c1035cb96942951710020a8.exe

C:\Users\Admin\AppData\Local\Temp\2579be109c1035cb96942951710020a8.exe
"C:\Users\Admin\AppData\Local\Temp\2579be109c1035cb96942951710020a8.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:5084

C:\ProgramData\bjuxhm\euiqwdl.exe
C:\ProgramData\bjuxhm\euiqwdl.exe start2
1⤵
- Executes dropped EXE
PID:5096

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

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Downloads

C:\ProgramData\bjuxhm\euiqwdl.exe

Filesize
147KB

MD5
2579be109c1035cb96942951710020a8

SHA1
6987472967c8ce5e3d5fd6730a9da2964afacd10

SHA256
a0a5ebd512b7685798ac966c0b05415df9eff585a79af11c9ff99d7aa17e2101

SHA512
191ea3d7edc69f1cb9d1ec4967074667c5e1c6b02fdaa8bbc5a4414bf5ca00ccafadc49670c5b3065133915d78e482572545f1d0c8c3382e6a767c1f08a33a21

Download Submit
memory/5084-9-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5084-1-0x0000000000690000-0x0000000000691000-memory.dmp

Filesize
4KB

Download
memory/5084-4-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5084-7-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5084-8-0x0000000000A70000-0x0000000000AA4000-memory.dmp

Filesize
208KB

Download
memory/5084-0-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5084-10-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5084-2-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5096-16-0x00000000005C0000-0x00000000005C1000-memory.dmp

Filesize
4KB

Download
memory/5096-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5096-22-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5096-29-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5096-30-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5096-31-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download