systembc | 5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a

Resubmissions

16-05-2022 16:24

220516-twn54sddfp 10

Analysis

max time kernel
146s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
16-05-2022 16:24

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General

Target

5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe
Size

222KB
MD5

72cfa33b978294103889481feca472f2
SHA1

0615eb31fd67345b9fa0d57d12a3bcb363152abe
SHA256

5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a
SHA512

d1de5fee23b7a858ec62b849cd8a41cf896ab8b6df4836c65ba36942c1d1727b36832d45713a578c93e8a0b8650bf55923568637d91bb9b2196257a2ae015559

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

fanstat18.club:4044

dexblog90.club:4044

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 2 IoCs

Processes:

jist.exejist.exe

pid process

1552 jist.exe
1572 jist.exe
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

70 api.ipify.org

pid	process
1552	jist.exe
1572	jist.exe

flow	ioc
70	api.ipify.org

Drops file in Windows directory 2 IoCs

Processes:

5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe

description	ioc	process
File created	C:\Windows\Tasks\jist.job	5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe
File opened for modification	C:\Windows\Tasks\jist.job	5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
1176	1388	WerFault.exe	5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe
4496	1552	WerFault.exe	jist.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe

pid	process
1388	5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe
1388	5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe

C:\Users\Admin\AppData\Local\Temp\5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe
"C:\Users\Admin\AppData\Local\Temp\5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1388 -s 948
2⤵
- Program crash
PID:1176

C:\ProgramData\igjq\jist.exe
C:\ProgramData\igjq\jist.exe start2
1⤵
- Executes dropped EXE
PID:1552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1552 -s 256
2⤵
- Program crash
PID:4496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1388 -ip 1388
1⤵
PID:2740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1552 -ip 1552
1⤵
PID:3136

C:\ProgramData\igjq\jist.exe
C:\ProgramData\igjq\jist.exe start2
1⤵
- Executes dropped EXE
PID:1572

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\ProgramData\igjq\jist.exe
Filesize
222KB

MD5
72cfa33b978294103889481feca472f2

SHA1
0615eb31fd67345b9fa0d57d12a3bcb363152abe

SHA256
5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a

SHA512
d1de5fee23b7a858ec62b849cd8a41cf896ab8b6df4836c65ba36942c1d1727b36832d45713a578c93e8a0b8650bf55923568637d91bb9b2196257a2ae015559

Download Submit
C:\ProgramData\igjq\jist.exe
Filesize
222KB

MD5
72cfa33b978294103889481feca472f2

SHA1
0615eb31fd67345b9fa0d57d12a3bcb363152abe

SHA256
5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a

SHA512
d1de5fee23b7a858ec62b849cd8a41cf896ab8b6df4836c65ba36942c1d1727b36832d45713a578c93e8a0b8650bf55923568637d91bb9b2196257a2ae015559

Download Submit
C:\ProgramData\igjq\jist.exe
Filesize
222KB

MD5
72cfa33b978294103889481feca472f2

SHA1
0615eb31fd67345b9fa0d57d12a3bcb363152abe

SHA256
5d366decba2f9078f457cb35fe7bfd198760683a709f0d33745fc6e0ba59ac8a

SHA512
d1de5fee23b7a858ec62b849cd8a41cf896ab8b6df4836c65ba36942c1d1727b36832d45713a578c93e8a0b8650bf55923568637d91bb9b2196257a2ae015559

Download Submit
memory/1388-130-0x0000000000558000-0x000000000055F000-memory.dmp

Filesize
28KB

Download
memory/1388-131-0x0000000002200000-0x0000000002209000-memory.dmp

Filesize
36KB

Download
memory/1388-132-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1552-135-0x00000000005D8000-0x00000000005DE000-memory.dmp

Filesize
24KB

Download
memory/1552-137-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1552-136-0x0000000000550000-0x0000000000559000-memory.dmp

Filesize
36KB

Download
memory/1572-139-0x00000000005DC000-0x00000000005E2000-memory.dmp

Filesize
24KB

Download
memory/1572-140-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download