systembc | fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16

Analysis

max time kernel
273s
max time network
297s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
17-05-2024 00:49

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General

Target

fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe
Size

4.5MB
MD5

96422a2b982c99614d31dff7f2b64680
SHA1

e8f25aa518b0ef54bcdf770479ef28dd99dd8efc
SHA256

fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16
SHA512

882beba69a0ab2d6f7d048ecb4666b9ba4fe3ea17387ece13fb5bd589ce0db4d7343fbce6e2d836192aed2a920aae4edd1f4b6fa090fe807d54e024dbc234de9
SSDEEP

24576:Epu+lTdASQBeSbtpO2+RZ8XK5OG/wS4gIVnxff9t+oQ9GXiqgbaaz2ub2UbRdL/h:EX

Score

10^/10

systembc persistence trojan

Malware Config

Extracted

Family

systembc

158.58.172.125:4018

185.219.82.231:4018

Signatures

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77Wakgksusfez.vbs	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe

Executes dropped EXE 2 IoCs

pid	Process
4356	$77717e2b
2504	$77084e85

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1739856679-3467441365-73334005-1000\Software\Microsoft\Windows\CurrentVersion\Run\socks5 = "powershell.exe -windowstyle hidden -Command \"& 'C:\\Users\\Admin\\AppData\\Local\\Temp\\$77084e85'\""	$77084e85

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3968 set thread context of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 set thread context of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2628	4356	WerFault.exe	72

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe
Token: SeDebugPrivilege	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 wrote to memory of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 wrote to memory of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 wrote to memory of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 wrote to memory of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 wrote to memory of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 wrote to memory of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 wrote to memory of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 wrote to memory of 4356	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	72
PID 3968 wrote to memory of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75
PID 3968 wrote to memory of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75
PID 3968 wrote to memory of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75
PID 3968 wrote to memory of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75
PID 3968 wrote to memory of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75
PID 3968 wrote to memory of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75
PID 3968 wrote to memory of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75
PID 3968 wrote to memory of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75
PID 3968 wrote to memory of 2504	3968	fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe	75

C:\Users\Admin\AppData\Local\Temp\fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe
"C:\Users\Admin\AppData\Local\Temp\fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Users\Admin\AppData\Local\Temp\$77717e2b
  "C:\Users\Admin\AppData\Local\Temp\$77717e2b"
  2⤵
  - Executes dropped EXE
  PID:4356
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4356 -s 380
    3⤵
    - Program crash
    PID:2628
- C:\Users\Admin\AppData\Local\Temp\$77084e85
  "C:\Users\Admin\AppData\Local\Temp\$77084e85"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:2504

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

C:\Users\Admin\AppData\Local\Temp\$77717e2b

Filesize
4.5MB

MD5
96422a2b982c99614d31dff7f2b64680

SHA1
e8f25aa518b0ef54bcdf770479ef28dd99dd8efc

SHA256
fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16

SHA512
882beba69a0ab2d6f7d048ecb4666b9ba4fe3ea17387ece13fb5bd589ce0db4d7343fbce6e2d836192aed2a920aae4edd1f4b6fa090fe807d54e024dbc234de9

Download Submit
memory/2504-4917-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/3968-50-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-1-0x0000000000040000-0x00000000004C6000-memory.dmp

Filesize
4.5MB

Download
memory/3968-4-0x00000000061F0000-0x0000000006282000-memory.dmp

Filesize
584KB

Download
memory/3968-6-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-10-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-34-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-58-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-48-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-42-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-32-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-30-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-26-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-24-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-22-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-68-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-66-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-0-0x0000000073ACE000-0x0000000073ACF000-memory.dmp

Filesize
4KB

Download
memory/3968-62-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-60-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-56-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-54-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-52-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-44-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-3-0x0000000006650000-0x0000000006B4E000-memory.dmp

Filesize
5.0MB

Download
memory/3968-64-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-40-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-38-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-36-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-20-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-18-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-14-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-29-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-16-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-12-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-8-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-5-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-4885-0x0000000073AC0000-0x00000000741AE000-memory.dmp

Filesize
6.9MB

Download
memory/3968-4886-0x0000000073AC0000-0x00000000741AE000-memory.dmp

Filesize
6.9MB

Download
memory/3968-4887-0x00000000063D0000-0x000000000644E000-memory.dmp

Filesize
504KB

Download
memory/3968-4888-0x00000000064A0000-0x00000000064EC000-memory.dmp

Filesize
304KB

Download
memory/3968-4889-0x0000000073ACE000-0x0000000073ACF000-memory.dmp

Filesize
4KB

Download
memory/3968-4890-0x0000000073AC0000-0x00000000741AE000-memory.dmp

Filesize
6.9MB

Download
memory/3968-2-0x0000000005F10000-0x0000000006150000-memory.dmp

Filesize
2.2MB

Download
memory/3968-4904-0x0000000006540000-0x0000000006594000-memory.dmp

Filesize
336KB

Download
memory/3968-46-0x0000000005F10000-0x000000000614A000-memory.dmp

Filesize
2.2MB

Download
memory/3968-4916-0x0000000073AC0000-0x00000000741AE000-memory.dmp

Filesize
6.9MB

Download