systembc | 825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1

General

Target

825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe
Size

109KB
MD5

fe5027423ed1c90793454939d6133215
SHA1

3b6595f5c588f567de48862f0125ba05170c7340
SHA256

825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1
SHA512

f6447b4a0d09a49a568b4c77eb1c9b183d8e9d2c30b8d2fa74a4113cffdb02343b0470c97e46f572f7d2c470b6c276de49ca4041d45fec9107d15852e40dd3b4

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:

xxkxe.exe

pid process

2052 xxkxe.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

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

Connection Proxy
T1090

pid	process
2052	xxkxe.exe

flow	ioc
43	api.ipify.org
44	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe

description	ioc	process
File created	C:\Windows\Tasks\xxkxe.job	825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe
File opened for modification	C:\Windows\Tasks\xxkxe.job	825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4652 1940 WerFault.exe 825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe

pid	pid_target	process	target process
4652	1940	WerFault.exe	825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe

pid	process
1940	825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe
1940	825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe

C:\Users\Admin\AppData\Local\Temp\825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe
"C:\Users\Admin\AppData\Local\Temp\825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 484
  2⤵
  - Program crash
  PID:4652

C:\ProgramData\gwom\xxkxe.exe
C:\ProgramData\gwom\xxkxe.exe start
1⤵
- Executes dropped EXE
PID:2052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1940 -ip 1940
1⤵
PID:4824

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\gwom\xxkxe.exe

Filesize
109KB

MD5
fe5027423ed1c90793454939d6133215

SHA1
3b6595f5c588f567de48862f0125ba05170c7340

SHA256
825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1

SHA512
f6447b4a0d09a49a568b4c77eb1c9b183d8e9d2c30b8d2fa74a4113cffdb02343b0470c97e46f572f7d2c470b6c276de49ca4041d45fec9107d15852e40dd3b4

Download Submit
C:\ProgramData\gwom\xxkxe.exe

Filesize
109KB

MD5
fe5027423ed1c90793454939d6133215

SHA1
3b6595f5c588f567de48862f0125ba05170c7340

SHA256
825cd09f1e55ed54d6c147ee95d575e6089394f6c56ba87fd5a3ae5439c841c1

SHA512
f6447b4a0d09a49a568b4c77eb1c9b183d8e9d2c30b8d2fa74a4113cffdb02343b0470c97e46f572f7d2c470b6c276de49ca4041d45fec9107d15852e40dd3b4

Download Submit
memory/1940-134-0x000000000324E000-0x0000000003255000-memory.dmp

Filesize
28KB

Download
memory/1940-135-0x000000000324E000-0x0000000003255000-memory.dmp

Filesize
28KB

Download
memory/1940-136-0x0000000003060000-0x0000000003069000-memory.dmp

Filesize
36KB

Download
memory/1940-137-0x0000000000400000-0x0000000002FA7000-memory.dmp

Filesize
43.7MB

Download
memory/2052-141-0x0000000002FB0000-0x00000000030B0000-memory.dmp

Filesize
1024KB

Download
memory/2052-142-0x0000000003870000-0x0000000003879000-memory.dmp

Filesize
36KB

Download
memory/2052-143-0x0000000000400000-0x0000000002FA7000-memory.dmp

Filesize
43.7MB

Download

Analysis

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