privateloader | 827c4997002fad614d23a5c16f9547005862ce2a8d5758e986f7a9ad67266184

Resubmissions

24-02-2023 03:21

230224-dwn74sca6w 10

07-02-2023 19:50

230207-yj9cqsef9t 10

Analysis

max time kernel
101s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07-02-2023 19:50

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General

Target

file.exe
Size

6.3MB
MD5

9c09eeffe2f425af3658e7596efa753e
SHA1

bfd360c1be479ec1495bfb3b9fee0a5de2577d55
SHA256

827c4997002fad614d23a5c16f9547005862ce2a8d5758e986f7a9ad67266184
SHA512

0ab73e8c6256d10b9d17104152f9d93ccf67ee17db14be7f220fb24c87ae30282179a55543c96c1060ac098dabf36462e0ab931d5a238ff1fab1b979dc04f3f6
SSDEEP

196608:g++s55CXIftXiqzb2oRBIKM2cZlZAAsU5H6qMENA2:lHJz6aIycKRCHecZ

Score

10^/10

privateloader discovery evasion loader spyware stealer trojan

Malware Config

Signatures

PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
loader privateloader
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

file.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ file.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	file.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

file.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	file.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

file.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA file.exe
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

11 ipinfo.io
12 ipinfo.io
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

file.exe

pid process

5016 file.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4216 5016 WerFault.exe file.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	file.exe

flow	ioc
11	ipinfo.io
12	ipinfo.io

pid	process
5016	file.exe

pid	pid_target	process	target process
4216	5016	WerFault.exe	file.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

file.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	file.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

file.exe

pid process

5016 file.exe
5016 file.exe
5016 file.exe
5016 file.exe

pid	process
5016	file.exe
5016	file.exe
5016	file.exe
5016	file.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:5016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5016 -s 1384
2⤵
- Program crash
PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 5016 -ip 5016
1⤵
PID:1136

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/5016-132-0x0000000000400000-0x0000000000FF3000-memory.dmp

Filesize
11.9MB

Download
memory/5016-133-0x0000000000400000-0x0000000000FF3000-memory.dmp

Filesize
11.9MB

Download
memory/5016-134-0x0000000000400000-0x0000000000FF3000-memory.dmp

Filesize
11.9MB

Download
memory/5016-135-0x0000000000400000-0x0000000000FF3000-memory.dmp

Filesize
11.9MB

Download
memory/5016-136-0x0000000000400000-0x0000000000FF3000-memory.dmp

Filesize
11.9MB

Download
memory/5016-137-0x0000000000400000-0x0000000000FF3000-memory.dmp

Filesize
11.9MB

Download
memory/5016-138-0x0000000077770000-0x0000000077913000-memory.dmp

Filesize
1.6MB

Download
memory/5016-139-0x0000000000400000-0x0000000000FF3000-memory.dmp

Filesize
11.9MB

Download
memory/5016-140-0x0000000000400000-0x0000000000FF3000-memory.dmp

Filesize
11.9MB

Download
memory/5016-141-0x0000000000400000-0x0000000000FF3000-memory.dmp

Filesize
11.9MB

Download
memory/5016-142-0x0000000077770000-0x0000000077913000-memory.dmp

Filesize
1.6MB

Download