zgrat | 6570e239d47518afaf8baeed1da31b475ec07ee1256e85bd0318d397f40d4e5c

Analysis

max time kernel
147s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
24-02-2024 12:50

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General

Target

Nvokcuobkn.exe
Size

51KB
MD5

8647ffb0d889ea1933f7a4e7771094c0
SHA1

5c20b6cf56287c18566e50b0249e6cd9285f3ca3
SHA256

6570e239d47518afaf8baeed1da31b475ec07ee1256e85bd0318d397f40d4e5c
SHA512

26c47cf2ceb3a6e7d3d3b7f7d8934d6d769d31d9d279479a141df6ae2057e8b2644e12a225f56e5306529133e1a793b9500e5633732ef586464ea2c8fd43957c
SSDEEP

768:ibNdv/q2bAXYN+/sHyIoY1Dufiy1SSP4+acdU9/nKPUTV4A5Ynn8w/Ayfmxx:i+7+1DZy1LfaF/nEUitnn8gAyfw

Score

10^/10

zgrat persistence rat

Malware Config

Signatures

Detect ZGRat V1 34 IoCs

resource	yara_rule
behavioral1/memory/2292-38-0x0000000006190000-0x00000000063FE000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-39-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-40-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-42-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-44-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-46-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-48-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-52-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-54-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-56-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-58-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-50-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-62-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-64-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-66-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-68-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-70-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-72-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-76-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-78-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-74-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-80-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-82-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-60-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-84-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-86-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-90-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-88-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-92-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-94-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-96-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-98-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-100-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1
behavioral1/memory/2292-102-0x0000000006190000-0x00000000063F7000-memory.dmp	family_zgrat_v1

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\Qwxgibnmmbg.vbs	Nvokcuobkn.exe

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-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\Install name = "C:\\Users\\Admin\\AppData\\Local\\Install path\\Install name"	Nvokcuobkn.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2292 set thread context of 2680	2292	Nvokcuobkn.exe	28

Suspicious behavior: RenamesItself 20 IoCs

pid	Process
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2292	Nvokcuobkn.exe
Token: SeDebugPrivilege	2680	Nvokcuobkn.exe
Token: SeShutdownPrivilege	2680	Nvokcuobkn.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2680	Nvokcuobkn.exe
2680	Nvokcuobkn.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28
PID 2292 wrote to memory of 2680	2292	Nvokcuobkn.exe	28

C:\Users\Admin\AppData\Local\Temp\Nvokcuobkn.exe
"C:\Users\Admin\AppData\Local\Temp\Nvokcuobkn.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\Nvokcuobkn.exe
  C:\Users\Admin\AppData\Local\Temp\Nvokcuobkn.exe
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2680

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab10E4.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar1106.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
memory/2292-0-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/2292-1-0x0000000073FB0000-0x000000007469E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-2-0x0000000000230000-0x0000000000270000-memory.dmp

Filesize
256KB

Download
memory/2292-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2292-38-0x0000000006190000-0x00000000063FE000-memory.dmp

Filesize
2.4MB

Download
memory/2292-39-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-40-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-42-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-44-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-46-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-48-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-52-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-54-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-56-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-58-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-50-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-62-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-64-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-66-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-68-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-70-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-72-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-76-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-78-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-74-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-80-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-82-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-60-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-84-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-86-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-90-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-88-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-92-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-94-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-96-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-98-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-100-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-102-0x0000000006190000-0x00000000063F7000-memory.dmp

Filesize
2.4MB

Download
memory/2292-1153-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/2292-1154-0x0000000007570000-0x0000000007766000-memory.dmp

Filesize
2.0MB

Download
memory/2292-1155-0x0000000000530000-0x000000000057C000-memory.dmp

Filesize
304KB

Download
memory/2292-1156-0x0000000073FB0000-0x000000007469E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-1157-0x0000000000230000-0x0000000000270000-memory.dmp

Filesize
256KB

Download
memory/2292-1172-0x0000000073FB0000-0x000000007469E000-memory.dmp

Filesize
6.9MB

Download
memory/2680-1184-0x00000000000F0000-0x00000000000FA000-memory.dmp

Filesize
40KB

Download
memory/2680-1185-0x00000000000F0000-0x00000000000FA000-memory.dmp

Filesize
40KB

Download
memory/2680-1197-0x00000000000F0000-0x00000000000FA000-memory.dmp

Filesize
40KB

Download
memory/2680-1198-0x00000000000F0000-0x00000000000FA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads