systembc | a4609b413d497de8eea92104d7e871490e2978bea1b91eb878e41e54b253eaa0

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04-06-2024 04:42

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General

Target

3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
Size

2.2MB
MD5

e817cc929fbc651c5bdab9e8cca0d9d9
SHA1

4d73dc2afcde6a1dcf9417c0120252a2d8fd246f
SHA256

3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282
SHA512

a9c1e547ef74c20e0a21dfc951463fb6883a23da4c323c96c5e64ac5793e774ceae898d4cf486e1bf1ea8fb69360610639a1046005fcdb9bd9f8463aec4a3e2f
SSDEEP

49152:Znv1H6cOicCqvWtLfr1/7IBSWCRBClm7gXKxfsvX7TXL:XHLhbQsV/7bRBClagXnv77

Score

10^/10

systembc persistence trojan

Malware Config

Extracted

Family

systembc

cobusabobus.cam:4383

185.43.220.45:4383

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\socks5 = "powershell.exe -windowstyle hidden -Command \"& 'C:\\Users\\Admin\\AppData\\Local\\Temp\\3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe'\""	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

description	pid	process	target process
PID 2292 set thread context of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

description	pid	process
Token: SeDebugPrivilege	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
Token: SeDebugPrivilege	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

description	pid	process	target process
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 2292 wrote to memory of 640	2292	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

C:\Users\Admin\AppData\Local\Temp\3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
"C:\Users\Admin\AppData\Local\Temp\3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
  "C:\Users\Admin\AppData\Local\Temp\3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe"
  2⤵
  - Adds Run key to start application
  PID:640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/640-4914-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/2292-50-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-4913-0x0000000074430000-0x0000000074B1E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-3-0x0000000004F20000-0x000000000513C000-memory.dmp

Filesize
2.1MB

Download
memory/2292-48-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-10-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-12-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-18-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-5-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-6-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-57-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-8-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-14-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-46-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-68-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-66-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-64-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-62-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-42-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-58-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-54-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-52-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-0-0x000000007443E000-0x000000007443F000-memory.dmp

Filesize
4KB

Download
memory/2292-4-0x0000000006140000-0x000000000635E000-memory.dmp

Filesize
2.1MB

Download
memory/2292-2-0x0000000074430000-0x0000000074B1E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-60-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-40-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-38-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-36-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-34-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-32-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-30-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-28-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-26-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-24-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-22-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-20-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-16-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-4891-0x0000000074430000-0x0000000074B1E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-4893-0x00000000049C0000-0x0000000004A0C000-memory.dmp

Filesize
304KB

Download
memory/2292-4892-0x0000000004960000-0x00000000049B8000-memory.dmp

Filesize
352KB

Download
memory/2292-4894-0x000000007443E000-0x000000007443F000-memory.dmp

Filesize
4KB

Download
memory/2292-4895-0x0000000074430000-0x0000000074B1E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-4896-0x0000000004D50000-0x0000000004DA4000-memory.dmp

Filesize
336KB

Download
memory/2292-44-0x0000000006140000-0x0000000006358000-memory.dmp

Filesize
2.1MB

Download
memory/2292-1-0x0000000000960000-0x0000000000BA0000-memory.dmp

Filesize
2.2MB

Download