systembc | 1845a910dcde8c6e45ad2e0c48439e5ab8bbbeb731f2af11a1b7bbab3bfe0127

Analysis

max time kernel
140s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-10-2024 01:08

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General

Target

1845a910dcde8c6e45ad2e0c48439e5ab8bbbeb731f2af11a1b7bbab3bfe0127.dll
Size

655KB
MD5

7cbf2951f13cd54abd951b1d289e2655
SHA1

d345e1d251714508a28544dc00e5950b05116ce1
SHA256

1845a910dcde8c6e45ad2e0c48439e5ab8bbbeb731f2af11a1b7bbab3bfe0127
SHA512

773cc4fdf347454181173305ac5df67ed829f918411d3234ad4be33a6f2cf6fd142ef9c64ab18ac2fba64acf29b667f17ba1d3b4fc8fad39c9c0f2c580e45652
SSDEEP

12288:5VM1TXEY93cdWFnQyS94SjU3u8nTef/TUKo9vy0lg3BJhRbignDYy+z:jMJ0Y6dWJQyS/jj8nTefLUKEyGK/PMr

Score

10^/10

systembc discovery trojan

Malware Config

Extracted

Family

systembc

38.132.122.161:443

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc

Blocklisted process makes network request 1 IoCs

flow	pid	Process
2	2136	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2136	2384	rundll32.exe	31
PID 2384 wrote to memory of 2136	2384	rundll32.exe	31
PID 2384 wrote to memory of 2136	2384	rundll32.exe	31
PID 2384 wrote to memory of 2136	2384	rundll32.exe	31
PID 2384 wrote to memory of 2136	2384	rundll32.exe	31
PID 2384 wrote to memory of 2136	2384	rundll32.exe	31
PID 2384 wrote to memory of 2136	2384	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1845a910dcde8c6e45ad2e0c48439e5ab8bbbeb731f2af11a1b7bbab3bfe0127.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1845a910dcde8c6e45ad2e0c48439e5ab8bbbeb731f2af11a1b7bbab3bfe0127.dll,#1
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  PID:2136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2136-0-0x0000000074BC0000-0x0000000074C67000-memory.dmp

Filesize
668KB

Download
memory/2136-1-0x0000000074BC0000-0x0000000074C1E000-memory.dmp

Filesize
376KB

Download
memory/2136-2-0x0000000074BC0000-0x0000000074C67000-memory.dmp

Filesize
668KB

Download
memory/2136-4-0x0000000074BC0000-0x0000000074C1E000-memory.dmp

Filesize
376KB

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