privateloader | b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94

Analysis

max time kernel
146s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
02-06-2024 08:19

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General

Target

b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94.exe
Size

3.3MB
MD5

c1ab79af8fe4b27608926951fedbd7ec
SHA1

e9b8878de3b2b2c56471aa2fe7f32c26e99fd2fb
SHA256

b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94
SHA512

50aa25eedd088f1df725742926e283a11f88172f67333826b662c3d525ce6e09cb7159f71ad5d57ec7ccc00ad3e5ccb92d9e154673ffbd2e4b286fc42d225386
SSDEEP

98304:J0ncMa0aY+/3Jyc2r/wBfCrX0TvTtJOEJawWa:Sc8aYcJT2cNCgLT7OLwD

Score

10^/10

privateloader evasion loader

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\FirewallRules\C:\ = "1"	b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94.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.

flow	ioc
2	ipinfo.io
3	api.myip.com
6	ipinfo.io
2	api.myip.com

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\GroupPolicy\GPT.INI	b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94.exe
File opened for modification	C:\Windows\System32\GroupPolicy	b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94.exe
File opened for modification	C:\Windows\System32\GroupPolicy\gpt.ini	b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94.exe
File created	C:\Windows\System32\GroupPolicy\Machine\Registry.pol	b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94.exe

C:\Users\Admin\AppData\Local\Temp\b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94.exe
"C:\Users\Admin\AppData\Local\Temp\b1aa29129dfde05dfdd542ed1bddfb823eb6ffa06456eeb8b9eea30f04bcbb94.exe"
1⤵
- Modifies firewall policy service
- Drops file in System32 directory
PID:896

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:3300

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:4500

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

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/896-0-0x00007FF7EC630000-0x00007FF7ECDA5000-memory.dmp

Filesize
7.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads