systembc | a0a5ebd512b7685798ac966c0b05415df9eff585a79af11c9ff99d7aa17e2101

max time kernel
301s
max time network
305s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-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

Processes:

cmfg.exe

pid process

688 cmfg.exe

pid	process
688	cmfg.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral4/memory/3932-0-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/3932-2-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/3932-4-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/3932-7-0x0000000000400000-0x000000000044D000-memory.dmp	upx
C:\ProgramData\gbaco\cmfg.exe	upx
behavioral4/memory/688-18-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/688-22-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral4/memory/688-29-0x0000000000400000-0x000000000044D000-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.

Processes:

flow ioc

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

Proxy
T1090

flow	ioc
3	api.ipify.org
5	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

2579be109c1035cb96942951710020a8.exe

description	ioc	process
File created	C:\Windows\Tasks\cmfg.job	2579be109c1035cb96942951710020a8.exe
File opened for modification	C:\Windows\Tasks\cmfg.job	2579be109c1035cb96942951710020a8.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2579be109c1035cb96942951710020a8.exe

pid process

3932 2579be109c1035cb96942951710020a8.exe
3932 2579be109c1035cb96942951710020a8.exe

pid	process
3932	2579be109c1035cb96942951710020a8.exe
3932	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:3932

C:\ProgramData\gbaco\cmfg.exe
C:\ProgramData\gbaco\cmfg.exe start2
1⤵
- Executes dropped EXE
PID:688

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Proxy

T1090

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\ProgramData\gbaco\cmfg.exe
Filesize
147KB

MD5
2579be109c1035cb96942951710020a8

SHA1
6987472967c8ce5e3d5fd6730a9da2964afacd10

SHA256
a0a5ebd512b7685798ac966c0b05415df9eff585a79af11c9ff99d7aa17e2101

SHA512
191ea3d7edc69f1cb9d1ec4967074667c5e1c6b02fdaa8bbc5a4414bf5ca00ccafadc49670c5b3065133915d78e482572545f1d0c8c3382e6a767c1f08a33a21

Download Submit
memory/688-31-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/688-30-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/688-29-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/688-22-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/688-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/688-16-0x0000000000A20000-0x0000000000A21000-memory.dmp

Filesize
4KB

Download
memory/3932-4-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3932-10-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3932-9-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3932-8-0x00000000032E0000-0x0000000003314000-memory.dmp

Filesize
208KB

Download
memory/3932-7-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3932-0-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3932-2-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3932-1-0x0000000000B20000-0x0000000000B21000-memory.dmp

Filesize
4KB

Download