zgrat | b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0

General

Target

b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe
Size

791KB
MD5

8eb6ed01392a5cbba283febd7c9aa16a
SHA1

d472f8b50f8a9a6e583262f326a57927d9df940c
SHA256

b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0
SHA512

e6f08c9036df0f8c7f38895f4bbf240d796b8da9838ac87c67c56122361675462844a99fed386856a09744d4beaba7f81431619696cea959f93dc0de1962151a
SSDEEP

12288:SaEg+LSgoEJHE6QxTZbZQIPqeEMbZO6MGomMRPArytpfoA:SaEgVrEJCTZlQISeEoq1J3pfx

Score

10^/10

Malware Config

Signatures

Detect ZGRat V1 2 IoCs

resource	yara_rule
behavioral1/memory/740-4-0x000000001C160000-0x000000001C214000-memory.dmp	family_zgrat_v1
behavioral1/memory/4388-26-0x000000001BDE0000-0x000000001BEE4000-memory.dmp	family_zgrat_v1

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sys.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sys.exe	Powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 740 set thread context of 4388	740	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe	88

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1372	Powershell.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1372	Powershell.exe
1372	Powershell.exe
4388	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe
4388	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe
4388	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe
4388	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe
4388	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1372	Powershell.exe
Token: SeDebugPrivilege	4388	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 740 wrote to memory of 1372	740	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe	85
PID 740 wrote to memory of 1372	740	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe	85
PID 740 wrote to memory of 4388	740	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe	88
PID 740 wrote to memory of 4388	740	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe	88
PID 740 wrote to memory of 4388	740	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe	88
PID 740 wrote to memory of 4388	740	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe	88
PID 740 wrote to memory of 4388	740	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe	88
PID 740 wrote to memory of 4388	740	b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe	88

C:\Users\Admin\AppData\Local\Temp\b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe
"C:\Users\Admin\AppData\Local\Temp\b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:740
- C:\Windows\System32\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sys.exe'
  2⤵
  - Drops startup file
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1372
- C:\Users\Admin\AppData\Local\Temp\b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe
  C:\Users\Admin\AppData\Local\Temp\b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\b2e85f5907f28c7c9bfc0370be2567494e0fd11887dfc80ca62958d4f5fbf8a0.exe.log

Filesize
1KB

MD5
1ffb6c38353a8d7a11fd1b0a3480ac5d

SHA1
32d622aae7c022fe9fa7d22efb9c8a184ae3032c

SHA256
3d7b67a6de3a663d825fc385677fcd577498a582ed616c899765392f191ddb13

SHA512
b8b781ea9222a86087e63ad70732b3921f85ecbbf6facb940b2f8ab797b5624534af48a4eeae4b35ecb6bcc7cea5a42bb090e6d7041bd6d065044a81e1ea8395

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pf42x0zz.czr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/740-5-0x0000000002EF0000-0x0000000002F0E000-memory.dmp

Filesize
120KB

Download
memory/740-2-0x000000001BF80000-0x000000001BFF6000-memory.dmp

Filesize
472KB

Download
memory/740-4-0x000000001C160000-0x000000001C214000-memory.dmp

Filesize
720KB

Download
memory/740-0-0x00007FFDB7283000-0x00007FFDB7285000-memory.dmp

Filesize
8KB

Download
memory/740-28-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

Filesize
10.8MB

Download
memory/740-1-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/740-3-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

Filesize
10.8MB

Download
memory/1372-22-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

Filesize
10.8MB

Download
memory/1372-9-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

Filesize
10.8MB

Download
memory/1372-8-0x000001DAFA230000-0x000001DAFA252000-memory.dmp

Filesize
136KB

Download
memory/1372-7-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

Filesize
10.8MB

Download
memory/1372-6-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

Filesize
10.8MB

Download
memory/4388-23-0x0000000140000000-0x00000001400A2000-memory.dmp

Filesize
648KB

Download
memory/4388-27-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

Filesize
10.8MB

Download
memory/4388-26-0x000000001BDE0000-0x000000001BEE4000-memory.dmp

Filesize
1.0MB

Download
memory/4388-30-0x000000001BEE0000-0x000000001BF2C000-memory.dmp

Filesize
304KB

Download
memory/4388-29-0x0000000002D60000-0x0000000002DB6000-memory.dmp

Filesize
344KB

Download
memory/4388-31-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

Filesize
10.8MB

Download

Analysis

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