158c187328cc74a62e49ee95380f6df1a33b865bc010076af7dbc3256660061d

General

Target

158c187328cc74a62e49ee95380f6df1a33b865bc010076af7dbc3256660061d.dll
Size

10.0MB
MD5

f650497633ae6be365e053758bb5b51d
SHA1

3848671c027614d00dc666e722b28906aeaf4818
SHA256

158c187328cc74a62e49ee95380f6df1a33b865bc010076af7dbc3256660061d
SHA512

b7f84905944b3805974894ec96d9fd0bd9e8ea984e46572edce958531588a0dff6c6804540fe2bc35238849eb1fe7ea298fd4e2fa4e8d7980fcd72a23e8226d7

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:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.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:

rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Themida packer 6 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1044-57-0x0000000001F70000-0x0000000004A4D000-memory.dmp	themida
behavioral1/memory/1044-58-0x0000000001F70000-0x0000000004A4D000-memory.dmp	themida
behavioral1/memory/1044-59-0x0000000001F70000-0x0000000004A4D000-memory.dmp	themida
behavioral1/memory/1044-60-0x0000000001F70000-0x0000000004A4D000-memory.dmp	themida
behavioral1/memory/1044-61-0x0000000001F70000-0x0000000004A4D000-memory.dmp	themida
behavioral1/memory/1044-62-0x0000000001F70000-0x0000000004A4D000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

1044 rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

360 1044 WerFault.exe rundll32.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

rundll32.exe

pid process

1044 rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

pid	process
1044	rundll32.exe

pid	pid_target	process	target process
360	1044	WerFault.exe	rundll32.exe

pid	process
1044	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1672 wrote to memory of 1044	1672	rundll32.exe	rundll32.exe
PID 1672 wrote to memory of 1044	1672	rundll32.exe	rundll32.exe
PID 1672 wrote to memory of 1044	1672	rundll32.exe	rundll32.exe
PID 1672 wrote to memory of 1044	1672	rundll32.exe	rundll32.exe
PID 1672 wrote to memory of 1044	1672	rundll32.exe	rundll32.exe
PID 1672 wrote to memory of 1044	1672	rundll32.exe	rundll32.exe
PID 1672 wrote to memory of 1044	1672	rundll32.exe	rundll32.exe
PID 1044 wrote to memory of 360	1044	rundll32.exe	WerFault.exe
PID 1044 wrote to memory of 360	1044	rundll32.exe	WerFault.exe
PID 1044 wrote to memory of 360	1044	rundll32.exe	WerFault.exe
PID 1044 wrote to memory of 360	1044	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\158c187328cc74a62e49ee95380f6df1a33b865bc010076af7dbc3256660061d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1672

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\158c187328cc74a62e49ee95380f6df1a33b865bc010076af7dbc3256660061d.dll,#1
2⤵
- 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:1044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1044 -s 308
3⤵
- Program crash
PID:360

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

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Downloads

memory/360-63-0x0000000000000000-mapping.dmp

Download
memory/1044-54-0x0000000000000000-mapping.dmp

Download
memory/1044-55-0x00000000763C1000-0x00000000763C3000-memory.dmp

Filesize
8KB

Download
memory/1044-56-0x0000000077690000-0x0000000077810000-memory.dmp

Filesize
1.5MB

Download
memory/1044-57-0x0000000001F70000-0x0000000004A4D000-memory.dmp

Filesize
42.9MB

Download
memory/1044-58-0x0000000001F70000-0x0000000004A4D000-memory.dmp

Filesize
42.9MB

Download
memory/1044-59-0x0000000001F70000-0x0000000004A4D000-memory.dmp

Filesize
42.9MB

Download
memory/1044-60-0x0000000001F70000-0x0000000004A4D000-memory.dmp

Filesize
42.9MB

Download
memory/1044-61-0x0000000001F70000-0x0000000004A4D000-memory.dmp

Filesize
42.9MB

Download
memory/1044-62-0x0000000001F70000-0x0000000004A4D000-memory.dmp

Filesize
42.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads