systembc | 3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282

Analysis

max time kernel
124s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
02-06-2024 01:08

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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

Detects executables packed with SmartAssembly 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4392-1-0x0000000000FA0000-0x00000000011E0000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly

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-1-5-21-1337824034-2731376981-3755436523-1000\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 4392 set thread context of 3748	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

description	pid	process
Token: SeDebugPrivilege	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
Token: SeDebugPrivilege	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe

description	pid	process	target process
PID 4392 wrote to memory of 3748	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 4392 wrote to memory of 3748	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 4392 wrote to memory of 3748	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 4392 wrote to memory of 3748	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 4392 wrote to memory of 3748	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 4392 wrote to memory of 3748	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 4392 wrote to memory of 3748	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 4392 wrote to memory of 3748	4392	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe	3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
PID 4392 wrote to memory of 3748	4392	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:4392
- C:\Users\Admin\AppData\Local\Temp\3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe
  "C:\Users\Admin\AppData\Local\Temp\3a7327bd54ba0dfa36bbf0b9d0dc820984d6d0e0316cfa4045ab4c1e7e447282.exe"
  2⤵
  - Adds Run key to start application
  PID:3748

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/3748-4904-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/4392-18-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-4895-0x0000000007450000-0x000000000749C000-memory.dmp

Filesize
304KB

Download
memory/4392-3-0x0000000074A90000-0x0000000075240000-memory.dmp

Filesize
7.7MB

Download
memory/4392-4-0x0000000007000000-0x000000000721E000-memory.dmp

Filesize
2.1MB

Download
memory/4392-5-0x00000000077F0000-0x0000000007D94000-memory.dmp

Filesize
5.6MB

Download
memory/4392-6-0x00000000072E0000-0x0000000007372000-memory.dmp

Filesize
584KB

Download
memory/4392-24-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-46-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-40-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-56-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-54-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-48-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-44-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-42-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-38-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-36-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-34-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-32-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-28-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-30-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-26-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-22-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-1-0x0000000000FA0000-0x00000000011E0000-memory.dmp

Filesize
2.2MB

Download
memory/4392-2-0x0000000005CB0000-0x0000000005ECC000-memory.dmp

Filesize
2.1MB

Download
memory/4392-10-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-14-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-12-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-16-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-8-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-7-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-70-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-68-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-66-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-64-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-62-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-60-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-58-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-52-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-50-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-4893-0x0000000074A90000-0x0000000075240000-memory.dmp

Filesize
7.7MB

Download
memory/4392-4894-0x00000000073F0000-0x0000000007448000-memory.dmp

Filesize
352KB

Download
memory/4392-0-0x0000000074A9E000-0x0000000074A9F000-memory.dmp

Filesize
4KB

Download
memory/4392-4896-0x0000000074A9E000-0x0000000074A9F000-memory.dmp

Filesize
4KB

Download
memory/4392-4897-0x0000000074A90000-0x0000000075240000-memory.dmp

Filesize
7.7MB

Download
memory/4392-4898-0x00000000076B0000-0x0000000007704000-memory.dmp

Filesize
336KB

Download
memory/4392-20-0x0000000007000000-0x0000000007218000-memory.dmp

Filesize
2.1MB

Download
memory/4392-4905-0x0000000074A90000-0x0000000075240000-memory.dmp

Filesize
7.7MB

Download