systembc | fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16

Analysis

max time kernel
123s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
14-05-2024 05:31

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General

Target

file.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 zgrat persistence rat trojan

Malware Config

Extracted

Family

systembc

158.58.172.125:4018

185.219.82.231:4018

Signatures

Detect ZGRat V1 34 IoCs

resource	yara_rule
behavioral2/memory/3168-2-0x0000000006E70000-0x00000000070B0000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-16-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-18-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-65-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-68-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-66-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-62-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-58-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-56-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-54-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-50-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-46-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-44-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-42-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-38-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-36-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-60-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-52-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-49-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-40-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-34-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-32-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-30-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-28-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-26-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-24-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-22-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-20-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-14-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-12-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-10-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-8-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-6-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/3168-5-0x0000000006E70000-0x00000000070AA000-memory.dmp	family_zgrat_v1

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat

Drops startup file 1 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4760	$77759ad8
4396	$77b04949

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-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\socks5 = "powershell.exe -windowstyle hidden -Command \"& 'C:\\Users\\Admin\\AppData\\Local\\Temp\\$77b04949'\""	$77b04949

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3168 set thread context of 4760	3168	file.exe	95
PID 3168 set thread context of 4396	3168	file.exe	99

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1176	4760	WerFault.exe	95

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3168	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3168	file.exe
Token: SeDebugPrivilege	3168	file.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3168 wrote to memory of 4760	3168	file.exe	95
PID 3168 wrote to memory of 4760	3168	file.exe	95
PID 3168 wrote to memory of 4760	3168	file.exe	95
PID 3168 wrote to memory of 4760	3168	file.exe	95
PID 3168 wrote to memory of 4760	3168	file.exe	95
PID 3168 wrote to memory of 4760	3168	file.exe	95
PID 3168 wrote to memory of 4760	3168	file.exe	95
PID 3168 wrote to memory of 4760	3168	file.exe	95
PID 3168 wrote to memory of 4760	3168	file.exe	95
PID 3168 wrote to memory of 4396	3168	file.exe	99
PID 3168 wrote to memory of 4396	3168	file.exe	99
PID 3168 wrote to memory of 4396	3168	file.exe	99
PID 3168 wrote to memory of 4396	3168	file.exe	99
PID 3168 wrote to memory of 4396	3168	file.exe	99
PID 3168 wrote to memory of 4396	3168	file.exe	99
PID 3168 wrote to memory of 4396	3168	file.exe	99
PID 3168 wrote to memory of 4396	3168	file.exe	99
PID 3168 wrote to memory of 4396	3168	file.exe	99

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Users\Admin\AppData\Local\Temp\$77759ad8
  "C:\Users\Admin\AppData\Local\Temp\$77759ad8"
  2⤵
  - Executes dropped EXE
  PID:4760
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4760 -s 420
    3⤵
    - Program crash
    PID:1176
- C:\Users\Admin\AppData\Local\Temp\$77b04949
  "C:\Users\Admin\AppData\Local\Temp\$77b04949"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:4396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4760 -ip 4760
1⤵
PID:2480

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\$77759ad8

Filesize
4.5MB

MD5
96422a2b982c99614d31dff7f2b64680

SHA1
e8f25aa518b0ef54bcdf770479ef28dd99dd8efc

SHA256
fe74f06d7437d213d96466b4475db2809c60a4e8aced9df338f4a71cf9bc7c16

SHA512
882beba69a0ab2d6f7d048ecb4666b9ba4fe3ea17387ece13fb5bd589ce0db4d7343fbce6e2d836192aed2a920aae4edd1f4b6fa090fe807d54e024dbc234de9

Download Submit
memory/3168-49-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-8-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-3-0x0000000007660000-0x0000000007C04000-memory.dmp

Filesize
5.6MB

Download
memory/3168-4-0x0000000007150000-0x00000000071E2000-memory.dmp

Filesize
584KB

Download
memory/3168-16-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-18-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-65-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-68-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-66-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-62-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-58-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-56-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-54-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-50-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-46-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-44-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-40-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-38-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-36-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-60-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-52-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-0-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/3168-32-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-4916-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/3168-42-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-30-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-28-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-26-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-24-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-22-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-20-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-14-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-12-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-10-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-2-0x0000000006E70000-0x00000000070B0000-memory.dmp

Filesize
2.2MB

Download
memory/3168-6-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-5-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/3168-4885-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/3168-4886-0x00000000072F0000-0x000000000736E000-memory.dmp

Filesize
504KB

Download
memory/3168-4887-0x0000000005C90000-0x0000000005CDC000-memory.dmp

Filesize
304KB

Download
memory/3168-4888-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/3168-4889-0x0000000074A00000-0x00000000751B0000-memory.dmp

Filesize
7.7MB

Download
memory/3168-1-0x0000000000F20000-0x00000000013A6000-memory.dmp

Filesize
4.5MB

Download
memory/3168-4903-0x0000000007C10000-0x0000000007C64000-memory.dmp

Filesize
336KB

Download
memory/3168-34-0x0000000006E70000-0x00000000070AA000-memory.dmp

Filesize
2.2MB

Download
memory/4396-4915-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download