b67222864ebeff001e105045e8e15b67d0483ea3a84bf02775f8aa2029d1ac08

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-en-20211208
submitted
01-02-2022 17:30

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General

Target

loader.exe
Size

5.2MB
MD5

fc6f7b81b26442a2ba19d32530a5049a
SHA1

bd0689478f7b3f5bf74af443a1b3a9a3d357bd64
SHA256

b67222864ebeff001e105045e8e15b67d0483ea3a84bf02775f8aa2029d1ac08
SHA512

fb136a02553cc28dfc9bc30b871413525365b22f78a7a0321d87734b6a53fe03b3bc1d8a1697c55af7e1a6a24762b2f40a529b0c9e384174ceae0f69f7da50e9

Score

9^/10

evasion themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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:

loader.exe

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

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1472-58-0x0000000000E30000-0x0000000001AEC000-memory.dmp	themida
behavioral1/memory/1472-59-0x0000000000E30000-0x0000000001AEC000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

loader.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA loader.exe
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 ip-api.com
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

loader.exe

pid process

1472 loader.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

loader.exe

pid process

1472 loader.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

loader.exe

description pid process

Token: SeDebugPrivilege 1472 loader.exe

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

flow	ioc
4	ip-api.com

pid	process
1472	loader.exe

pid	process
1472	loader.exe

description	pid	process
Token: SeDebugPrivilege	1472	loader.exe

C:\Users\Admin\AppData\Local\Temp\loader.exe
"C:\Users\Admin\AppData\Local\Temp\loader.exe"
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1472

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/1472-54-0x0000000075D61000-0x0000000075D63000-memory.dmp

Filesize
8KB

Download
memory/1472-58-0x0000000000E30000-0x0000000001AEC000-memory.dmp

Filesize
12.7MB

Download
memory/1472-59-0x0000000000E30000-0x0000000001AEC000-memory.dmp

Filesize
12.7MB

Download
memory/1472-60-0x0000000003180000-0x0000000003181000-memory.dmp

Filesize
4KB

Download