zgrat | f917cbb00490f27691097081db77cc38d0f776d374b2fbd40e4b592eeef578be

General

Target

klkjjk.exe
Size

3.9MB
MD5

0d28c308c7d3af1f50a24cd98d59adbe
SHA1

617eb940a77fffe2e8363f9a11430ebb56b4c988
SHA256

f917cbb00490f27691097081db77cc38d0f776d374b2fbd40e4b592eeef578be
SHA512

d71da6edef67bc977ac8564f75cc0e8cdd31c0a9b37253017122f522c4d2f1ece5d8a56642dab40e3d8651ad1d1233ba0a27f78a536ddf897ddd392dbebb5ae8
SSDEEP

49152:/YQ9p/TMILu3UAJvYIJ7PBJw47zI8gFEtYnEZhNa+uOTapp5pP7eoi:DpgQEZPPT4Yj

Score

10^/10

zgrat evasion persistence rat

Malware Config

Signatures

Detect ZGRat V1 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2592-24-0x000000001AC50000-0x000000001AD52000-memory.dmp	family_zgrat_v1

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

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

klkjjk.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	klkjjk.exe

Disables Task Manager via registry modification
evasion
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

klkjjk.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\klkjjk = "\"C:\\Users\\Admin\\klkjjk.exe\""	klkjjk.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

klkjjk.exe

description pid process target process

PID 2792 set thread context of 2592 2792 klkjjk.exe vbc.exe

description	pid	process	target process
PID 2792 set thread context of 2592	2792	klkjjk.exe	vbc.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

Processes:

powershell.exevbc.exe

pid	process
1948	powershell.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe
2592	vbc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exevbc.exe

description pid process

Token: SeDebugPrivilege 1948 powershell.exe
Token: SeDebugPrivilege 2592 vbc.exe

description	pid	process
Token: SeDebugPrivilege	1948	powershell.exe
Token: SeDebugPrivilege	2592	vbc.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

klkjjk.exe

description	pid	process	target process
PID 2792 wrote to memory of 1948	2792	klkjjk.exe	powershell.exe
PID 2792 wrote to memory of 1948	2792	klkjjk.exe	powershell.exe
PID 2792 wrote to memory of 1948	2792	klkjjk.exe	powershell.exe
PID 2792 wrote to memory of 2592	2792	klkjjk.exe	vbc.exe
PID 2792 wrote to memory of 2592	2792	klkjjk.exe	vbc.exe
PID 2792 wrote to memory of 2592	2792	klkjjk.exe	vbc.exe
PID 2792 wrote to memory of 2592	2792	klkjjk.exe	vbc.exe
PID 2792 wrote to memory of 2592	2792	klkjjk.exe	vbc.exe
PID 2792 wrote to memory of 2592	2792	klkjjk.exe	vbc.exe
PID 2792 wrote to memory of 2592	2792	klkjjk.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\klkjjk.exe
"C:\Users\Admin\AppData\Local\Temp\klkjjk.exe"
1⤵
- Disables RegEdit via registry modification
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2792

C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath $env:UserProfile
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1948

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2592

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scripting

1

T1064

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/1948-20-0x000007FEF5A80000-0x000007FEF641D000-memory.dmp

Filesize
9.6MB

Download
memory/1948-5-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download
memory/1948-6-0x000007FEF5A80000-0x000007FEF641D000-memory.dmp

Filesize
9.6MB

Download
memory/1948-7-0x0000000002810000-0x0000000002890000-memory.dmp

Filesize
512KB

Download
memory/1948-8-0x000007FEF5A80000-0x000007FEF641D000-memory.dmp

Filesize
9.6MB

Download
memory/1948-10-0x0000000002810000-0x0000000002890000-memory.dmp

Filesize
512KB

Download
memory/1948-4-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/1948-12-0x0000000002810000-0x0000000002890000-memory.dmp

Filesize
512KB

Download
memory/1948-13-0x0000000002810000-0x0000000002890000-memory.dmp

Filesize
512KB

Download
memory/2592-11-0x0000000140000000-0x00000001400A2000-memory.dmp

Filesize
648KB

Download
memory/2592-24-0x000000001AC50000-0x000000001AD52000-memory.dmp

Filesize
1.0MB

Download
memory/2592-18-0x0000000140000000-0x00000001400A2000-memory.dmp

Filesize
648KB

Download
memory/2592-14-0x0000000140000000-0x00000001400A2000-memory.dmp

Filesize
648KB

Download
memory/2592-16-0x000007FFFFFDE000-0x000007FFFFFDF000-memory.dmp

Filesize
4KB

Download
memory/2592-22-0x000007FEF5040000-0x000007FEF5A2C000-memory.dmp

Filesize
9.9MB

Download
memory/2592-23-0x000000001ADB0000-0x000000001AE30000-memory.dmp

Filesize
512KB

Download
memory/2592-15-0x0000000140000000-0x00000001400A2000-memory.dmp

Filesize
648KB

Download
memory/2592-26-0x0000000001FE0000-0x000000000202C000-memory.dmp

Filesize
304KB

Download
memory/2592-25-0x00000000006A0000-0x00000000006F6000-memory.dmp

Filesize
344KB

Download
memory/2592-27-0x000000001ADB0000-0x000000001AE30000-memory.dmp

Filesize
512KB

Download
memory/2592-28-0x000000001ADB0000-0x000000001AE30000-memory.dmp

Filesize
512KB

Download
memory/2592-29-0x000000001ADB0000-0x000000001AE30000-memory.dmp

Filesize
512KB

Download
memory/2592-30-0x000007FEF5040000-0x000007FEF5A2C000-memory.dmp

Filesize
9.9MB

Download
memory/2592-31-0x000000001ADB0000-0x000000001AE30000-memory.dmp

Filesize
512KB

Download
memory/2592-32-0x000000001ADB0000-0x000000001AE30000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads