privateloader | 24876e127254ad0312cf6d46934e297d77f009985c5874f348959892fe4ce904

General

Target

File.exe
Size

5.9MB
MD5

a918feb305100632b7a9044ff2d9f000
SHA1

ccead101f37dd6f035e200f4dc631e50b99c32ab
SHA256

f24799f17a003ab371fd5b6835bee216d331a7560762899fa46fe62772e64dee
SHA512

278077023b873343f80b9b40764c9931a476596f23ad22acad0ce2fb5a39a5e7663cada047d900fead0604c006f314625b9f145052e082b467be393c69db4f08

Score

10^/10

privateloader evasion loader themida trojan

Malware Config

Extracted

Family

privateloader

C2

http://212.193.30.45/proxies.txt

http://85.202.169.116/server.txt

pastebin.com/raw/A7dSG1te

http://wfsdragon.ru/api/setStats.php

85.202.169.116

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

Themida packer 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3392-130-0x0000000000400000-0x00000000012C6000-memory.dmp	themida
behavioral2/memory/3392-131-0x0000000000400000-0x00000000012C6000-memory.dmp	themida
behavioral2/memory/3392-132-0x0000000000400000-0x00000000012C6000-memory.dmp	themida

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
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

File.exe

pid process

3392 File.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3228 3392 WerFault.exe File.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

File.exe

pid process

3392 File.exe
3392 File.exe

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

pid	process
3392	File.exe

pid	pid_target	process	target process
3228	3392	WerFault.exe	File.exe

pid	process
3392	File.exe
3392	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
- Suspicious behavior: EnumeratesProcesses
PID:3392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3392 -s 636
2⤵
- Program crash
PID:3228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3392 -ip 3392
1⤵
PID:4356

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3392-130-0x0000000000400000-0x00000000012C6000-memory.dmp

Filesize
14.8MB

Download
memory/3392-131-0x0000000000400000-0x00000000012C6000-memory.dmp

Filesize
14.8MB

Download
memory/3392-132-0x0000000000400000-0x00000000012C6000-memory.dmp

Filesize
14.8MB

Download
memory/3392-133-0x0000000077BD0000-0x0000000077D73000-memory.dmp

Filesize
1.6MB

Download
memory/3392-134-0x0000000001401000-0x000000000141F000-memory.dmp

Filesize
120KB

Download
memory/3392-135-0x0000000003150000-0x0000000003185000-memory.dmp

Filesize
212KB

Download
memory/3392-136-0x0000000000400000-0x00000000012C6000-memory.dmp

Filesize
14.8MB

Download
memory/3392-137-0x0000000000400000-0x00000000012C6000-memory.dmp

Filesize
14.8MB

Download
memory/3392-138-0x0000000077BD0000-0x0000000077D73000-memory.dmp

Filesize
1.6MB

Download
memory/3392-139-0x0000000001401000-0x000000000141F000-memory.dmp

Filesize
120KB

Download
memory/3392-140-0x0000000077BD0000-0x0000000077D73000-memory.dmp

Filesize
1.6MB

Download
memory/3392-141-0x0000000000400000-0x00000000012C6000-memory.dmp

Filesize
14.8MB

Download
memory/3392-142-0x0000000001401000-0x000000000141F000-memory.dmp

Filesize
120KB

Download

Analysis

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