systembc | 8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41

General

Target

8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe
Size

318KB
MD5

69ab4ae7051a7962e610f4a8cc56d634
SHA1

9275cfb1e28dc75e614ab1fc6b7d0783a556cce1
SHA256

8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41
SHA512

521486297dc22c5f6e02dda6bca8789a13ed5d6d91bc1fed1342bcfcfabac3f0771e057d5afc1af1be8ca9552b80a0e81b93e7b5a90c81c803b2eb3485285c7f

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

C2

advertrex20.xyz:4044

gentexman37.xyz:4044

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 1 IoCs

Processes:

dwouan.exe

pid process

4960 dwouan.exe
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

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

Connection Proxy
T1090

pid	process
4960	dwouan.exe

flow	ioc
5	api.ipify.org
6	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe

description	ioc	process
File created	C:\Windows\Tasks\dwouan.job	8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe
File opened for modification	C:\Windows\Tasks\dwouan.job	8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4424 4568 WerFault.exe 8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe

pid	pid_target	process	target process
4424	4568	WerFault.exe	8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe

pid	process
4568	8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe
4568	8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe

C:\Users\Admin\AppData\Local\Temp\8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe
"C:\Users\Admin\AppData\Local\Temp\8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:4568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4568 -s 936
  2⤵
  - Program crash
  PID:4424

C:\ProgramData\kouo\dwouan.exe
C:\ProgramData\kouo\dwouan.exe start
1⤵
- Executes dropped EXE
PID:4960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4568 -ip 4568
1⤵
PID:2952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Connection Proxy

1

T1090

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Connection Proxy

1

T1090

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\kouo\dwouan.exe

Filesize
318KB

MD5
69ab4ae7051a7962e610f4a8cc56d634

SHA1
9275cfb1e28dc75e614ab1fc6b7d0783a556cce1

SHA256
8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41

SHA512
521486297dc22c5f6e02dda6bca8789a13ed5d6d91bc1fed1342bcfcfabac3f0771e057d5afc1af1be8ca9552b80a0e81b93e7b5a90c81c803b2eb3485285c7f

Download Submit
C:\ProgramData\kouo\dwouan.exe

Filesize
318KB

MD5
69ab4ae7051a7962e610f4a8cc56d634

SHA1
9275cfb1e28dc75e614ab1fc6b7d0783a556cce1

SHA256
8e853d68c303ff55e85082e83b45978a13fc2821a8363a1c1ad50cc2ddb6eb41

SHA512
521486297dc22c5f6e02dda6bca8789a13ed5d6d91bc1fed1342bcfcfabac3f0771e057d5afc1af1be8ca9552b80a0e81b93e7b5a90c81c803b2eb3485285c7f

Download Submit
memory/4568-130-0x0000000000030000-0x0000000000036000-memory.dmp

Filesize
24KB

Download
memory/4568-131-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/4568-132-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download
memory/4960-135-0x00000000001C0000-0x00000000001C9000-memory.dmp

Filesize
36KB

Download
memory/4960-136-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download

Analysis

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