zgrat | 34637d766580ee138044aba566756d6ee1356ad1915df4778c72e74dcabd25bb

Analysis

max time kernel
144s
max time network
143s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
28-12-2023 23:21

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General

Target

ff887fa7815b8759a4908e7db7246dff.exe
Size

2.9MB
MD5

ff887fa7815b8759a4908e7db7246dff
SHA1

643240f371ba273be5d24d279fa4a12e45d49b19
SHA256

34637d766580ee138044aba566756d6ee1356ad1915df4778c72e74dcabd25bb
SHA512

3b409a1afd836636a25b93e9a6a8c15d3686b249a05ba60735864cf884f5f9a816e96ee02f411bc31cba5380f1b5e861f5b78c09ceb9c9eddd2a17fe90cf614f
SSDEEP

49152:SaMq0SaVfvc8NDRxHjfUlcfkDKG0y4fTOy6XWa:RWa

Score

10^/10

zgrat persistence rat

Malware Config

Signatures

Detect ZGRat V1 34 IoCs

resource	yara_rule
behavioral1/memory/2496-5-0x0000000000600000-0x000000000066E000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-11-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-25-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-37-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-63-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-69-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-67-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-65-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-61-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-59-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-57-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-55-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-53-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-51-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-49-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-47-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-45-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-43-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-41-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-39-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-35-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-33-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-31-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-29-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-27-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-23-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-21-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-19-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-17-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-15-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-13-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-9-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-7-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1
behavioral1/memory/2496-6-0x0000000000600000-0x0000000000667000-memory.dmp	family_zgrat_v1

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\Mozilla\\firefox.exe\","	ff887fa7815b8759a4908e7db7246dff.exe

ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
2312	ff887fa7815b8759a4908e7db7246dff.exe
2312	ff887fa7815b8759a4908e7db7246dff.exe
2312	ff887fa7815b8759a4908e7db7246dff.exe
2312	ff887fa7815b8759a4908e7db7246dff.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2496	ff887fa7815b8759a4908e7db7246dff.exe
2496	ff887fa7815b8759a4908e7db7246dff.exe
1468	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2496	ff887fa7815b8759a4908e7db7246dff.exe
Token: SeDebugPrivilege	1468	powershell.exe
Token: SeDebugPrivilege	2312	ff887fa7815b8759a4908e7db7246dff.exe
Token: SeShutdownPrivilege	2312	ff887fa7815b8759a4908e7db7246dff.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2312	ff887fa7815b8759a4908e7db7246dff.exe
2312	ff887fa7815b8759a4908e7db7246dff.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 1256	2496	ff887fa7815b8759a4908e7db7246dff.exe	30
PID 2496 wrote to memory of 1256	2496	ff887fa7815b8759a4908e7db7246dff.exe	30
PID 2496 wrote to memory of 1256	2496	ff887fa7815b8759a4908e7db7246dff.exe	30
PID 2496 wrote to memory of 1256	2496	ff887fa7815b8759a4908e7db7246dff.exe	30
PID 1256 wrote to memory of 1468	1256	WScript.exe	31
PID 1256 wrote to memory of 1468	1256	WScript.exe	31
PID 1256 wrote to memory of 1468	1256	WScript.exe	31
PID 1256 wrote to memory of 1468	1256	WScript.exe	31
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33
PID 2496 wrote to memory of 2312	2496	ff887fa7815b8759a4908e7db7246dff.exe	33

C:\Users\Admin\AppData\Local\Temp\ff887fa7815b8759a4908e7db7246dff.exe
"C:\Users\Admin\AppData\Local\Temp\ff887fa7815b8759a4908e7db7246dff.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_Xpuqxffprcsiiwrkqgzqm.vbs"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1256
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionPath C:\,'C:\Users\Admin\AppData\Local\Mozilla\firefox.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1468
- C:\Users\Admin\AppData\Local\Temp\ff887fa7815b8759a4908e7db7246dff.exe
  C:\Users\Admin\AppData\Local\Temp\ff887fa7815b8759a4908e7db7246dff.exe
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2312

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\_Xpuqxffprcsiiwrkqgzqm.vbs

Filesize
143B

MD5
717b4d7fa76feeacd5d14ef6464b138f

SHA1
733c2c9e7e6c454621a7de00364f7cf7d4db733e

SHA256
fdd3b1fb8750a69b824106dbf0377b7821551544e79fe598283bf58099008c36

SHA512
1554a595f894851df685d92af079197c1df730c78505d095e1cfe61ed003b5a009f4335a95165052d7c107f6f76073d876595d78e48fc80892d761c5169dfef0

Download Submit
memory/1468-1968-0x0000000074810000-0x0000000074DBB000-memory.dmp

Filesize
5.7MB

Download
memory/1468-1964-0x0000000074810000-0x0000000074DBB000-memory.dmp

Filesize
5.7MB

Download
memory/1468-1967-0x0000000001CC0000-0x0000000001D00000-memory.dmp

Filesize
256KB

Download
memory/1468-1965-0x0000000001CC0000-0x0000000001D00000-memory.dmp

Filesize
256KB

Download
memory/1468-1966-0x0000000001CC0000-0x0000000001D00000-memory.dmp

Filesize
256KB

Download
memory/1468-1963-0x0000000074810000-0x0000000074DBB000-memory.dmp

Filesize
5.7MB

Download
memory/2496-39-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-29-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-63-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-69-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-67-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-65-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-61-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-59-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-57-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-55-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-53-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-51-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-49-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-47-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-45-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-43-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-41-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-1-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/2496-35-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-33-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-31-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-37-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-27-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-23-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-844-0x00000000051A0000-0x00000000051E0000-memory.dmp

Filesize
256KB

Download
memory/2496-21-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-19-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-17-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-15-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-13-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-9-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-7-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-6-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-25-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-1960-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/2496-11-0x0000000000600000-0x0000000000667000-memory.dmp

Filesize
412KB

Download
memory/2496-5-0x0000000000600000-0x000000000066E000-memory.dmp

Filesize
440KB

Download
memory/2496-4-0x0000000005EC0000-0x00000000060CC000-memory.dmp

Filesize
2.0MB

Download
memory/2496-3-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/2496-2-0x00000000051A0000-0x00000000051E0000-memory.dmp

Filesize
256KB

Download
memory/2496-0-0x0000000000F50000-0x0000000001234000-memory.dmp

Filesize
2.9MB

Download