systembc | c1f5b88413bef3bc89aacd544847d5690fe17247b10d5922e59e4cbc6c37707e

General

Target

socks.exe
Size

420KB
MD5

e85fa08c1ed20440363e2e44eced6299
SHA1

e0867a371a5c6bfdf6bd84470b188f0817b4d23a
SHA256

c1f5b88413bef3bc89aacd544847d5690fe17247b10d5922e59e4cbc6c37707e
SHA512

73bc5a867c7b86f32257f43167c1816b9087a0fc6d70f1500194821abbdfcaddb4f79325e0b24837fabb9594284ff9bb7b180de5fc0264287a6345b146ffcfbf
SSDEEP

6144:g/v3nlCZp4WBAo8+zcJHZNIp4id9q/7ygt2k/BFi+Vrh+Z6QFn5EzMJ1:E/lppJHwp5e/viEg6z81

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

C2

31.222.238.58:4280

192.168.1.28:4280

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Drops startup file 1 IoCs

Processes:

socks.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pu5xtvhm.lnk socks.exe
Executes dropped EXE 1 IoCs

Processes:

pu5xtvhm.exe

pid process

2640 pu5xtvhm.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

pu5xtvhm.exe

description pid process target process

PID 2640 set thread context of 4152 2640 pu5xtvhm.exe AddInProcess32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Runs ping.exe 1 TTPs 2 IoCs

Remote System Discovery
T1018

Processes:

PING.EXEPING.EXE

pid process

2736 PING.EXE
2416 PING.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pu5xtvhm.lnk	socks.exe

pid	process
2640	pu5xtvhm.exe

description	pid	process	target process
PID 2640 set thread context of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe

pid	process
2736	PING.EXE
2416	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

socks.exe

pid	process
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe
4760	socks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

socks.exepu5xtvhm.exe

description pid process

Token: SeDebugPrivilege 4760 socks.exe
Token: SeDebugPrivilege 2640 pu5xtvhm.exe

description	pid	process
Token: SeDebugPrivilege	4760	socks.exe
Token: SeDebugPrivilege	2640	pu5xtvhm.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

socks.execmd.exepu5xtvhm.exe

description	pid	process	target process
PID 4760 wrote to memory of 824	4760	socks.exe	cmd.exe
PID 4760 wrote to memory of 824	4760	socks.exe	cmd.exe
PID 4760 wrote to memory of 824	4760	socks.exe	cmd.exe
PID 824 wrote to memory of 2736	824	cmd.exe	PING.EXE
PID 824 wrote to memory of 2736	824	cmd.exe	PING.EXE
PID 824 wrote to memory of 2736	824	cmd.exe	PING.EXE
PID 824 wrote to memory of 2416	824	cmd.exe	PING.EXE
PID 824 wrote to memory of 2416	824	cmd.exe	PING.EXE
PID 824 wrote to memory of 2416	824	cmd.exe	PING.EXE
PID 824 wrote to memory of 2640	824	cmd.exe	pu5xtvhm.exe
PID 824 wrote to memory of 2640	824	cmd.exe	pu5xtvhm.exe
PID 824 wrote to memory of 2640	824	cmd.exe	pu5xtvhm.exe
PID 2640 wrote to memory of 2540	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 2540	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 2540	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 2540	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 2540	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 2540	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 2540	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 2540	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 2540	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 1808	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 1808	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 1808	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 1808	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 1808	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 1808	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 1808	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 1808	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 1808	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe
PID 2640 wrote to memory of 4152	2640	pu5xtvhm.exe	AddInProcess32.exe

C:\Users\Admin\AppData\Local\Temp\socks.exe
"C:\Users\Admin\AppData\Local\Temp\socks.exe"
1⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4760

C:\Windows\SysWOW64\cmd.exe
"cmd" /c ping 127.0.0.1 -n 44 > nul && copy "C:\Users\Admin\AppData\Local\Temp\socks.exe" "C:\Users\Admin\AppData\Roaming\ncache\pu5xtvhm.exe" && ping 127.0.0.1 -n 44 > nul && "C:\Users\Admin\AppData\Roaming\ncache\pu5xtvhm.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:824

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 44
3⤵
- Runs ping.exe
PID:2736

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 44
3⤵
- Runs ping.exe
PID:2416

C:\Users\Admin\AppData\Roaming\ncache\pu5xtvhm.exe
"C:\Users\Admin\AppData\Roaming\ncache\pu5xtvhm.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2640

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
4⤵
PID:2540

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
4⤵
PID:1808

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
4⤵
PID:4152

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\ncache\pu5xtvhm.exe
Filesize
420KB

MD5
e85fa08c1ed20440363e2e44eced6299

SHA1
e0867a371a5c6bfdf6bd84470b188f0817b4d23a

SHA256
c1f5b88413bef3bc89aacd544847d5690fe17247b10d5922e59e4cbc6c37707e

SHA512
73bc5a867c7b86f32257f43167c1816b9087a0fc6d70f1500194821abbdfcaddb4f79325e0b24837fabb9594284ff9bb7b180de5fc0264287a6345b146ffcfbf

Download Submit
C:\Users\Admin\AppData\Roaming\ncache\pu5xtvhm.exe
Filesize
420KB

MD5
e85fa08c1ed20440363e2e44eced6299

SHA1
e0867a371a5c6bfdf6bd84470b188f0817b4d23a

SHA256
c1f5b88413bef3bc89aacd544847d5690fe17247b10d5922e59e4cbc6c37707e

SHA512
73bc5a867c7b86f32257f43167c1816b9087a0fc6d70f1500194821abbdfcaddb4f79325e0b24837fabb9594284ff9bb7b180de5fc0264287a6345b146ffcfbf

Download Submit
memory/2640-156-0x00000000028F0000-0x0000000002900000-memory.dmp

Filesize
64KB

Download
memory/2640-153-0x00000000028F0000-0x0000000002900000-memory.dmp

Filesize
64KB

Download
memory/2640-151-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2640-159-0x00000000028F0000-0x0000000002900000-memory.dmp

Filesize
64KB

Download
memory/2640-158-0x00000000028F0000-0x0000000002900000-memory.dmp

Filesize
64KB

Download
memory/2640-157-0x00000000028F0000-0x0000000002900000-memory.dmp

Filesize
64KB

Download
memory/2640-155-0x00000000028F0000-0x0000000002900000-memory.dmp

Filesize
64KB

Download
memory/2640-152-0x00000000028F0000-0x0000000002900000-memory.dmp

Filesize
64KB

Download
memory/2640-154-0x00000000028F0000-0x0000000002900000-memory.dmp

Filesize
64KB

Download
memory/4152-162-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4152-160-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4152-163-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4760-142-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

Filesize
64KB

Download
memory/4760-135-0x0000000004C20000-0x0000000004CB2000-memory.dmp

Filesize
584KB

Download
memory/4760-137-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

Filesize
64KB

Download
memory/4760-144-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

Filesize
64KB

Download
memory/4760-133-0x0000000000850000-0x00000000008BE000-memory.dmp

Filesize
440KB

Download
memory/4760-143-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

Filesize
64KB

Download
memory/4760-136-0x0000000004CC0000-0x0000000004D5C000-memory.dmp

Filesize
624KB

Download
memory/4760-141-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

Filesize
64KB

Download
memory/4760-139-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

Filesize
64KB

Download
memory/4760-138-0x0000000006020000-0x000000000602A000-memory.dmp

Filesize
40KB

Download
memory/4760-134-0x00000000051D0000-0x0000000005774000-memory.dmp

Filesize
5.6MB

Download

Analysis

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