privateloader | 1d7c6b200ac9d76d30f825ecbdc9be885ce7698cef93c39f1fa2753eead4389b

Analysis

max time kernel
115s
max time network
220s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
02-08-2022 02:16

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General

Target

File.exe
Size

399.1MB
MD5

da68a47812b9fc6d8f58bc98503c55f9
SHA1

22f68cb818335552220eea6a38498f4688c7ea0a
SHA256

1d7c6b200ac9d76d30f825ecbdc9be885ce7698cef93c39f1fa2753eead4389b
SHA512

ee8535fa38381942124851abc10ebbef9e29fcee7f65b6709c21348cc4c7bc88ae71adf2ef5715796a5cdc02e62809fc67565ce72b112373033008bfb73ea713

Score

10^/10

privateloader evasion loader 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:

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\SystemBiosVersion	File.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	File.exe

Themida packer 6 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1924-55-0x00000000001C0000-0x00000000009A0000-memory.dmp	themida
behavioral1/memory/1924-56-0x00000000001C0000-0x00000000009A0000-memory.dmp	themida
behavioral1/memory/1924-57-0x00000000001C0000-0x00000000009A0000-memory.dmp	themida
behavioral1/memory/1924-59-0x00000000001C0000-0x00000000009A0000-memory.dmp	themida
behavioral1/memory/1924-58-0x00000000001C0000-0x00000000009A0000-memory.dmp	themida
behavioral1/memory/1924-61-0x00000000001C0000-0x00000000009A0000-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

1924 File.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1484 1924 WerFault.exe File.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

File.exe

pid process

1924 File.exe

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

pid	process
1924	File.exe

pid	pid_target	process	target process
1484	1924	WerFault.exe	File.exe

pid	process
1924	File.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

File.exe

description	pid	process	target process
PID 1924 wrote to memory of 1484	1924	File.exe	WerFault.exe
PID 1924 wrote to memory of 1484	1924	File.exe	WerFault.exe
PID 1924 wrote to memory of 1484	1924	File.exe	WerFault.exe
PID 1924 wrote to memory of 1484	1924	File.exe	WerFault.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
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1924 -s 1368
2⤵
- Program crash
PID:1484

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1484-62-0x0000000000000000-mapping.dmp

Download
memory/1924-54-0x00000000762D1000-0x00000000762D3000-memory.dmp

Filesize
8KB

Download
memory/1924-55-0x00000000001C0000-0x00000000009A0000-memory.dmp

Filesize
7.9MB

Download
memory/1924-56-0x00000000001C0000-0x00000000009A0000-memory.dmp

Filesize
7.9MB

Download
memory/1924-57-0x00000000001C0000-0x00000000009A0000-memory.dmp

Filesize
7.9MB

Download
memory/1924-59-0x00000000001C0000-0x00000000009A0000-memory.dmp

Filesize
7.9MB

Download
memory/1924-58-0x00000000001C0000-0x00000000009A0000-memory.dmp

Filesize
7.9MB

Download
memory/1924-60-0x0000000077700000-0x0000000077880000-memory.dmp

Filesize
1.5MB

Download
memory/1924-61-0x00000000001C0000-0x00000000009A0000-memory.dmp

Filesize
7.9MB

Download