privateloader | 0fd1f535929f90d75a59c57a8b33e4fb40381bb7ee31b3c18c10cb7c8d6599a3

Analysis

max time kernel
133s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
09-10-2022 19:37

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General

Target

Install.exe
Size

686.6MB
MD5

436c4290282bda086d3a38ae2ea5c2f5
SHA1

c69e9b7ba4967be00330053ba6b152f8393da612
SHA256

0fd1f535929f90d75a59c57a8b33e4fb40381bb7ee31b3c18c10cb7c8d6599a3
SHA512

ca1efea143c0e73b9c50afeaf0826da24373990c93b176f84e2576596b5296a38765db6710becab1c1829a5a1dba84eb34504f79ae0d55964a845e66a0aab15b
SSDEEP

98304:ULX0zHX9KZlxm8pNeRNO+eL1nZ779wnqRJh3kMDpzzY8:qXsHX9KmDJeLj9i4nda8

Score

10^/10

privateloader evasion loader spyware stealer themida 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:

Install.exe

description ioc process

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

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Install.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:

Install.exe

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

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

Install.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation Install.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	Install.exe

Themida packer 10 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3080-132-0x0000000000850000-0x00000000012F1000-memory.dmp	themida
behavioral2/memory/3080-134-0x0000000000850000-0x00000000012F1000-memory.dmp	themida
behavioral2/memory/3080-135-0x0000000000850000-0x00000000012F1000-memory.dmp	themida
behavioral2/memory/3080-136-0x0000000000850000-0x00000000012F1000-memory.dmp	themida
behavioral2/memory/3080-137-0x0000000000850000-0x00000000012F1000-memory.dmp	themida
behavioral2/memory/3080-138-0x0000000000850000-0x00000000012F1000-memory.dmp	themida
behavioral2/memory/3080-139-0x0000000000850000-0x00000000012F1000-memory.dmp	themida
behavioral2/memory/3080-140-0x0000000000850000-0x00000000012F1000-memory.dmp	themida
behavioral2/memory/3080-141-0x0000000000850000-0x00000000012F1000-memory.dmp	themida
behavioral2/memory/3080-143-0x0000000000850000-0x00000000012F1000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Install.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Install.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
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

4 ipinfo.io
5 ipinfo.io

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

flow	ioc
4	ipinfo.io
5	ipinfo.io

Drops file in System32 directory 6 IoCs

Processes:

Install.exesvchost.exe

description	ioc	process
File opened for modification	C:\Windows\System32\GroupPolicy	Install.exe
File opened for modification	C:\Windows\SysWOW64\GroupPolicy\gpt.ini	Install.exe
File created	C:\Windows\System32\GroupPolicy\Machine\Registry.pol	Install.exe
File opened for modification	C:\Windows\System32\GroupPolicy\GPT.INI	Install.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{B532BEC6-F10B-4D20-8808-9B2ADC363FC2}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{F5BE1E55-A529-4A44-918F-4014D430D3CB}.catalogItem	svchost.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

Install.exe

pid process

3080 Install.exe

pid	process
3080	Install.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Install.exe

pid process

3080 Install.exe
3080 Install.exe
3080 Install.exe
3080 Install.exe

pid	process
3080	Install.exe
3080	Install.exe
3080	Install.exe
3080	Install.exe

C:\Users\Admin\AppData\Local\Temp\Install.exe
"C:\Users\Admin\AppData\Local\Temp\Install.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:3080

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:3940

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:2156

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:5024

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

Web Service

T1102

Impact

Replay Monitor

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Downloads

memory/3080-132-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-133-0x00000000771B0000-0x0000000077353000-memory.dmp

Filesize
1.6MB

Download
memory/3080-134-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-135-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-136-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-137-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-138-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-139-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-140-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-141-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-142-0x00000000771B0000-0x0000000077353000-memory.dmp

Filesize
1.6MB

Download
memory/3080-143-0x0000000000850000-0x00000000012F1000-memory.dmp

Filesize
10.6MB

Download
memory/3080-144-0x00000000771B0000-0x0000000077353000-memory.dmp

Filesize
1.6MB

Download