systembc | b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69

General

Target

b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe
Size

331KB
MD5

5141357dda4fab9146a6724f8793f634
SHA1

05ff08362df5e50e457cfa10c4c6b730ca722ea9
SHA256

b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69
SHA512

1a4d16fb1d0633909f8551d9095dd708966b4cba47ce8c3504fda3456c290ba685cd0e234a9fe98a78913eb19193877f014ca74c22090592ddccdba1d92f43be

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

C2

26asdcgd.com:4039

26asdcgd.xyz:4039

Signatures

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

Processes:

vnmrpc.exe

pid process

2520 vnmrpc.exe
Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

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

Connection Proxy
T1090

pid	process
2520	vnmrpc.exe

flow	ioc
26	api.ipify.org
27	api.ipify.org
44	api.ipify.org
45	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe

description	ioc	process
File opened for modification	C:\Windows\Tasks\vnmrpc.job	b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe
File created	C:\Windows\Tasks\vnmrpc.job	b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe

Program crash 8 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
4112	4820	WerFault.exe	b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe
4856	2520	WerFault.exe	vnmrpc.exe
2620	2520	WerFault.exe	vnmrpc.exe
4636	4820	WerFault.exe	b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe
2404	4820	WerFault.exe	b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe
1424	2520	WerFault.exe	vnmrpc.exe
224	2520	WerFault.exe	vnmrpc.exe
4508	4820	WerFault.exe	b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe

pid	process
4820	b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe
4820	b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe

C:\Users\Admin\AppData\Local\Temp\b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe
"C:\Users\Admin\AppData\Local\Temp\b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 488
2⤵
- Program crash
PID:4112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 944
2⤵
- Program crash
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 968
2⤵
- Program crash
PID:2404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 984
2⤵
- Program crash
PID:4508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4820 -ip 4820
1⤵
PID:4708

C:\ProgramData\fwai\vnmrpc.exe
C:\ProgramData\fwai\vnmrpc.exe start
1⤵
- Executes dropped EXE
PID:2520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 484
2⤵
- Program crash
PID:4856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 768
2⤵
- Program crash
PID:2620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 840
2⤵
- Program crash
PID:1424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 868
2⤵
- Program crash
PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2520 -ip 2520
1⤵
PID:4080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2520 -ip 2520
1⤵
PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4820 -ip 4820
1⤵
PID:4132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4820 -ip 4820
1⤵
PID:1524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2520 -ip 2520
1⤵
PID:4176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2520 -ip 2520
1⤵
PID:3736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4820 -ip 4820
1⤵
PID:1900

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

Loading Replay Monitor...

Downloads

C:\ProgramData\fwai\vnmrpc.exe
Filesize
331KB

MD5
5141357dda4fab9146a6724f8793f634

SHA1
05ff08362df5e50e457cfa10c4c6b730ca722ea9

SHA256
b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69

SHA512
1a4d16fb1d0633909f8551d9095dd708966b4cba47ce8c3504fda3456c290ba685cd0e234a9fe98a78913eb19193877f014ca74c22090592ddccdba1d92f43be

Download Submit
C:\ProgramData\fwai\vnmrpc.exe
Filesize
331KB

MD5
5141357dda4fab9146a6724f8793f634

SHA1
05ff08362df5e50e457cfa10c4c6b730ca722ea9

SHA256
b1dd18e76c03df66c80e63806ab5e7117232c22dfbd5c275d4aea13da9a3bf69

SHA512
1a4d16fb1d0633909f8551d9095dd708966b4cba47ce8c3504fda3456c290ba685cd0e234a9fe98a78913eb19193877f014ca74c22090592ddccdba1d92f43be

Download Submit
memory/2520-136-0x0000000000E50000-0x0000000000E57000-memory.dmp

Filesize
28KB

Download
memory/2520-137-0x0000000000E50000-0x0000000000E57000-memory.dmp

Filesize
28KB

Download
memory/2520-138-0x0000000000C90000-0x0000000000C99000-memory.dmp

Filesize
36KB

Download
memory/2520-139-0x0000000000400000-0x0000000000C2C000-memory.dmp

Filesize
8.2MB

Download
memory/4820-130-0x0000000000C76000-0x0000000000C7C000-memory.dmp

Filesize
24KB

Download
memory/4820-131-0x0000000000C76000-0x0000000000C7C000-memory.dmp

Filesize
24KB

Download
memory/4820-132-0x0000000000DD0000-0x0000000000DD9000-memory.dmp

Filesize
36KB

Download
memory/4820-133-0x0000000000400000-0x0000000000C2C000-memory.dmp

Filesize
8.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads