systembc | 318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd

Resubmissions

18-04-2024 11:20

240418-nfk6macg3w 10

18-04-2024 11:20

18-04-2024 11:20

18-04-2024 11:20

18-04-2024 11:20

18-04-2024 09:59

Analysis

max time kernel
298s
max time network
299s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18-04-2024 09:59

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General

Target

318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
Size

350KB
MD5

0dc61438b79668900bd081bac6109760
SHA1

2ee66fd972c2d28ad30775971ba95056951910f0
SHA256

318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd
SHA512

467b352ce6188e6126050c229cd47b526e83ef3535449c3f02b70491e159523d7cc8ebb28caab4e8d98627a22a0af1faf13b134072309dfe56ad175d18177ca7
SSDEEP

6144:RoX0oZ+rm/OV6ZH7XYuB4xpuMadbr2X3f+gOkXdhFr:Ry0xrm/h7XYuWCMaV2XWgO8hFr

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

knock0909.monster:4035

knock0909.xyz:4035

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 6 IoCs

Processes:

kxxmx.exekxxmx.exekxxmx.exekxxmx.exekxxmx.exekxxmx.exe

pid process

2172 kxxmx.exe
3972 kxxmx.exe
3980 kxxmx.exe
1796 kxxmx.exe
3136 kxxmx.exe
2836 kxxmx.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

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

Proxy
T1090

pid	process
2172	kxxmx.exe
3972	kxxmx.exe
3980	kxxmx.exe
1796	kxxmx.exe
3136	kxxmx.exe
2836	kxxmx.exe

flow	ioc
32	api.ipify.org
33	api.ipify.org

Suspicious use of SetThreadContext 4 IoCs

Processes:

318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exekxxmx.exekxxmx.exekxxmx.exe

description	pid	process	target process
PID 2856 set thread context of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2172 set thread context of 3972	2172	kxxmx.exe	kxxmx.exe
PID 3980 set thread context of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3136 set thread context of 2836	3136	kxxmx.exe	kxxmx.exe

Drops file in Windows directory 2 IoCs

Processes:

318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe

description	ioc	process
File created	C:\Windows\Tasks\kxxmx.job	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
File opened for modification	C:\Windows\Tasks\kxxmx.job	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe

pid	process
932	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
932	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exekxxmx.exekxxmx.exekxxmx.exe

description	pid	process	target process
PID 2856 wrote to memory of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2856 wrote to memory of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2856 wrote to memory of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2856 wrote to memory of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2856 wrote to memory of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2856 wrote to memory of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2856 wrote to memory of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2856 wrote to memory of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2856 wrote to memory of 932	2856	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe	318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
PID 2172 wrote to memory of 3972	2172	kxxmx.exe	kxxmx.exe
PID 2172 wrote to memory of 3972	2172	kxxmx.exe	kxxmx.exe
PID 2172 wrote to memory of 3972	2172	kxxmx.exe	kxxmx.exe
PID 2172 wrote to memory of 3972	2172	kxxmx.exe	kxxmx.exe
PID 2172 wrote to memory of 3972	2172	kxxmx.exe	kxxmx.exe
PID 2172 wrote to memory of 3972	2172	kxxmx.exe	kxxmx.exe
PID 2172 wrote to memory of 3972	2172	kxxmx.exe	kxxmx.exe
PID 2172 wrote to memory of 3972	2172	kxxmx.exe	kxxmx.exe
PID 2172 wrote to memory of 3972	2172	kxxmx.exe	kxxmx.exe
PID 3980 wrote to memory of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3980 wrote to memory of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3980 wrote to memory of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3980 wrote to memory of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3980 wrote to memory of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3980 wrote to memory of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3980 wrote to memory of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3980 wrote to memory of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3980 wrote to memory of 1796	3980	kxxmx.exe	kxxmx.exe
PID 3136 wrote to memory of 2836	3136	kxxmx.exe	kxxmx.exe
PID 3136 wrote to memory of 2836	3136	kxxmx.exe	kxxmx.exe
PID 3136 wrote to memory of 2836	3136	kxxmx.exe	kxxmx.exe
PID 3136 wrote to memory of 2836	3136	kxxmx.exe	kxxmx.exe
PID 3136 wrote to memory of 2836	3136	kxxmx.exe	kxxmx.exe
PID 3136 wrote to memory of 2836	3136	kxxmx.exe	kxxmx.exe
PID 3136 wrote to memory of 2836	3136	kxxmx.exe	kxxmx.exe
PID 3136 wrote to memory of 2836	3136	kxxmx.exe	kxxmx.exe
PID 3136 wrote to memory of 2836	3136	kxxmx.exe	kxxmx.exe

C:\Users\Admin\AppData\Local\Temp\318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
"C:\Users\Admin\AppData\Local\Temp\318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2856

C:\Users\Admin\AppData\Local\Temp\318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe
"C:\Users\Admin\AppData\Local\Temp\318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd.exe"
2⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:932

C:\ProgramData\wgvnfm\kxxmx.exe
C:\ProgramData\wgvnfm\kxxmx.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2172

C:\ProgramData\wgvnfm\kxxmx.exe
C:\ProgramData\wgvnfm\kxxmx.exe start
2⤵
- Executes dropped EXE
PID:3972

C:\ProgramData\wgvnfm\kxxmx.exe
C:\ProgramData\wgvnfm\kxxmx.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3980

C:\ProgramData\wgvnfm\kxxmx.exe
C:\ProgramData\wgvnfm\kxxmx.exe start
2⤵
- Executes dropped EXE
PID:1796

C:\ProgramData\wgvnfm\kxxmx.exe
C:\ProgramData\wgvnfm\kxxmx.exe start
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3136

C:\ProgramData\wgvnfm\kxxmx.exe
C:\ProgramData\wgvnfm\kxxmx.exe start
2⤵
- Executes dropped EXE
PID:2836

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Proxy

T1090

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\ProgramData\wgvnfm\kxxmx.exe
Filesize
350KB

MD5
0dc61438b79668900bd081bac6109760

SHA1
2ee66fd972c2d28ad30775971ba95056951910f0

SHA256
318e0bd67ccbf40f50b848831fb2885b161e68acdfaaa0c619c79b3912af2ecd

SHA512
467b352ce6188e6126050c229cd47b526e83ef3535449c3f02b70491e159523d7cc8ebb28caab4e8d98627a22a0af1faf13b134072309dfe56ad175d18177ca7

Download Submit
memory/932-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/932-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/932-15-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2172-17-0x0000000000DF2000-0x0000000000DF9000-memory.dmp

Filesize
28KB

Download
memory/2856-1-0x0000000000F90000-0x0000000001090000-memory.dmp

Filesize
1024KB

Download
memory/2856-2-0x0000000000D50000-0x0000000000D5A000-memory.dmp

Filesize
40KB

Download
memory/3136-68-0x0000000000D70000-0x0000000000E70000-memory.dmp

Filesize
1024KB

Download
memory/3980-42-0x0000000000DF0000-0x0000000000EF0000-memory.dmp

Filesize
1024KB

Download
memory/3980-49-0x0000000000DF0000-0x0000000000EF0000-memory.dmp

Filesize
1024KB

Download