29a29d55f032057c27090196e48c2cad52bd5bc46642513a344879b95a81f5d6

Analysis

max time kernel
21s
max time network
24s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
21-03-2023 20:58

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General

Target

V4.exe
Size

11.4MB
MD5

2d0cb9ec97e5abac40a692aab91689c4
SHA1

82b37f06255d3c8ec5e088fe5cf7f58fdf27b601
SHA256

29a29d55f032057c27090196e48c2cad52bd5bc46642513a344879b95a81f5d6
SHA512

33448e712588550d5e77535be52e2e653cd67ffa3e928182d8af68530db3e06960614e7bafcb4c5c66776f72e79954776641406b2e7f0d4946ee7794aceb5d3c
SSDEEP

196608:76u3qVKcZ40PqqTOtfsLabW1RoNOL4CRRPG8uVfYW47ZIcZYM2mFIoNqcqT/Cg:76u6C0PqQOtEmbWbhRPG8uVwW4ecZxmD

Score

9^/10

evasion themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

V4.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ V4.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	V4.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:

V4.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	V4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	V4.exe

Themida packer 10 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/448-133-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida
behavioral2/memory/448-134-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida
behavioral2/memory/448-135-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida
behavioral2/memory/448-136-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida
behavioral2/memory/448-137-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida
behavioral2/memory/448-138-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida
behavioral2/memory/448-139-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida
behavioral2/memory/448-140-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida
behavioral2/memory/448-141-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida
behavioral2/memory/448-142-0x00007FF754660000-0x00007FF755DD0000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

V4.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA V4.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

V4.exe

pid process

448 V4.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

228 448 WerFault.exe V4.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

V4.exe

description pid process

Token: SeDebugPrivilege 448 V4.exe
Token: SeDebugPrivilege 448 V4.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	V4.exe

pid	process
448	V4.exe

pid	pid_target	process	target process
228	448	WerFault.exe	V4.exe

description	pid	process
Token: SeDebugPrivilege	448	V4.exe
Token: SeDebugPrivilege	448	V4.exe

C:\Users\Admin\AppData\Local\Temp\V4.exe
"C:\Users\Admin\AppData\Local\Temp\V4.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 use of AdjustPrivilegeToken
PID:448

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 448 -s 604
2⤵
- Program crash
PID:228

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 452 -p 448 -ip 448
1⤵
PID:3992

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/448-133-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download
memory/448-134-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download
memory/448-135-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download
memory/448-136-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download
memory/448-137-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download
memory/448-138-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download
memory/448-139-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download
memory/448-140-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download
memory/448-141-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download
memory/448-142-0x00007FF754660000-0x00007FF755DD0000-memory.dmp

Filesize
23.4MB

Download