zgrat | afddabb10af9cbd11a940567f1ef2a8d0483fefd47d575cae5e8e615c2f15f5b

Analysis

max time kernel
144s
max time network
201s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
08-05-2024 13:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

jaser.exe
Size

286.0MB
MD5

45cf735073402183e3650f69b264323f
SHA1

e30987fc42dd931e2fcdc02474b7a8f363e7731b
SHA256

afddabb10af9cbd11a940567f1ef2a8d0483fefd47d575cae5e8e615c2f15f5b
SHA512

3844fac4876376abb4b3e249ef950b8fc806098a22e857898e61cb26ecad509fdace80685681c515c3b50cd0c14be09b09f71bb68a9f1a6383f73529cd928730
SSDEEP

6291456:re35QLVGaqBSYYvfeaQYbAJwD11CuIed8oA46BQ1:A5QLnqBSYYvAixcuIed+bM

Score

10^/10

zgrat persistence rat

Malware Config

Signatures

Detect ZGRat V1 34 IoCs

resource	yara_rule
behavioral1/memory/4704-3-0x000001E021B60000-0x000001E021D7E000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-4-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-9-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-31-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-45-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-37-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-33-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-29-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-27-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-25-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-23-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-21-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-19-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-17-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-13-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-7-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-5-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-15-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-11-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-53-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-51-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-49-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-67-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-65-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-63-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-61-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-59-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-57-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-55-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-47-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-43-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-41-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-39-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1
behavioral1/memory/4704-35-0x000001E021B60000-0x000001E021D79000-memory.dmp	family_zgrat_v1

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

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-1-5-21-891789021-684472942-1795878712-1000\Software\Microsoft\Windows\CurrentVersion\Run\jaser = "C:\\Users\\Admin\\AppData\\Roaming\\jaser.exe"	jaser.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4704 set thread context of 3084	4704	jaser.exe	87

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Panther\UnattendGC\setupact.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\setuperr.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagerr.xml	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagwrn.xml	UserOOBEBroker.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3084	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4704	jaser.exe
Token: SeDebugPrivilege	4704	jaser.exe
Token: SeDebugPrivilege	3084	InstallUtil.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4704 wrote to memory of 3084	4704	jaser.exe	87
PID 4704 wrote to memory of 3084	4704	jaser.exe	87
PID 4704 wrote to memory of 3084	4704	jaser.exe	87
PID 4704 wrote to memory of 3084	4704	jaser.exe	87
PID 4704 wrote to memory of 3084	4704	jaser.exe	87
PID 4704 wrote to memory of 3084	4704	jaser.exe	87

C:\Users\Admin\AppData\Local\Temp\jaser.exe
"C:\Users\Admin\AppData\Local\Temp\jaser.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3084

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
1⤵
PID:4776

C:\Windows\System32\oobe\UserOOBEBroker.exe
C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding
1⤵
- Drops file in Windows directory
PID:752

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe
C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding
1⤵
PID:2872

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

Loading Replay Monitor...

Downloads

memory/3084-4894-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3084-4918-0x00007FFBB07A0000-0x00007FFBB1262000-memory.dmp

Filesize
10.8MB

Download
memory/3084-4915-0x00007FFBB07A0000-0x00007FFBB1262000-memory.dmp

Filesize
10.8MB

Download
memory/3084-4913-0x00007FFBB07A0000-0x00007FFBB1262000-memory.dmp

Filesize
10.8MB

Download
memory/4704-49-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-2-0x00007FFBB07A0000-0x00007FFBB1262000-memory.dmp

Filesize
10.8MB

Download
memory/4704-31-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-65-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-37-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-33-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-29-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-27-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-25-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-23-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-21-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-19-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-17-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-13-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-7-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-5-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-15-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-61-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-53-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-51-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-0-0x00007FFBB07A3000-0x00007FFBB07A5000-memory.dmp

Filesize
8KB

Download
memory/4704-67-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-45-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-9-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-11-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-59-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-57-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-55-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-47-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-43-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-41-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-39-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-35-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-4884-0x00007FFBB07A0000-0x00007FFBB1262000-memory.dmp

Filesize
10.8MB

Download
memory/4704-4886-0x000001E009300000-0x000001E00934C000-memory.dmp

Filesize
304KB

Download
memory/4704-4885-0x000001E0092A0000-0x000001E0092FA000-memory.dmp

Filesize
360KB

Download
memory/4704-4887-0x00007FFBB07A3000-0x00007FFBB07A5000-memory.dmp

Filesize
8KB

Download
memory/4704-4888-0x00007FFBB07A0000-0x00007FFBB1262000-memory.dmp

Filesize
10.8MB

Download
memory/4704-4889-0x000001E007900000-0x000001E007954000-memory.dmp

Filesize
336KB

Download
memory/4704-4890-0x00007FFBB07A0000-0x00007FFBB1262000-memory.dmp

Filesize
10.8MB

Download
memory/4704-4-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-3-0x000001E021B60000-0x000001E021D7E000-memory.dmp

Filesize
2.1MB

Download
memory/4704-4914-0x00007FFBB07A0000-0x00007FFBB1262000-memory.dmp

Filesize
10.8MB

Download
memory/4704-63-0x000001E021B60000-0x000001E021D79000-memory.dmp

Filesize
2.1MB

Download
memory/4704-1-0x000001E0071F0000-0x000001E0074C4000-memory.dmp

Filesize
2.8MB

Download