privateloader | 589d93deb639f967f96dbf6cbe48b1b434930ad3ac24a17d8e89ff058e4ec272

Analysis

max time kernel
124s
max time network
204s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
24-07-2024 12:31

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General

Target

setup.exe
Size

762.0MB
MD5

9326c686071c528549c80eea2638082e
SHA1

3c31e38d81289de167d9f37fbc6697b5c9cf71bd
SHA256

59ca077c90d1d26bb9e79b44c74a0ecf04bd02a92a90146efe87c170e11ca3d2
SHA512

9af45bc59bbd42d738cbf9547d8d6121a61bd97a6b9a3a2f2fc39caf721a6a64ce7ab991e482bd13a39ac3ddf62cfc1f95613c7d805370d2cda0199f4bccc114
SSDEEP

49152:NpfTCy0d0R7ruhVrPwHStdgjGf+WAud5iqBRSLmIe59123L7W:eyN7ruHaLGf+Wzd5TSLm/23m

Score

10^/10

privateloader evasion loader

Malware Config

Signatures

Modifies firewall policy service 3 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

Processes:

setup.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\FirewallRules\C:\ = "1"	setup.exe

PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
loader privateloader
Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 api.myip.com
4 ipinfo.io
5 api.myip.com
6 ipinfo.io

flow	ioc
4	api.myip.com
4	ipinfo.io
5	api.myip.com
6	ipinfo.io

Drops file in System32 directory 4 IoCs

Processes:

setup.exe

description	ioc	process
File opened for modification	C:\Windows\System32\GroupPolicy	setup.exe
File opened for modification	C:\Windows\System32\GroupPolicy\gpt.ini	setup.exe
File created	C:\Windows\System32\GroupPolicy\Machine\Registry.pol	setup.exe
File opened for modification	C:\Windows\System32\GroupPolicy\GPT.INI	setup.exe

C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
1⤵
- Modifies firewall policy service
- Drops file in System32 directory
PID:5072

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:2100

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:3692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/5072-0-0x00007FF7492E0000-0x00007FF7496F8000-memory.dmp

Filesize
4.1MB

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