c33acab1ddbee95302f0d54feb1c49c40dec807cec251fb6d30d056f571155e0

General

Target

smartscreen_protected.exe
Size

2.9MB
MD5

713b1c97b09d0e633ede2f62556e78b9
SHA1

c67835ca9504049a350fdb023ec7975cccce1674
SHA256

c33acab1ddbee95302f0d54feb1c49c40dec807cec251fb6d30d056f571155e0
SHA512

fadada8a709662a013a5b7984357d41fb004d3e600274ce2d067f081b246a6c8e764e104ff88c2131343d3a500a855ecd5990b968458d0bef5a1e5a15a99ee50
SSDEEP

49152:f9X3GwWO9gJdmbB6v6WELRkyVVgYgHUByjGw4JGP9zwYFHbXZkigd8ljRs1pit:f9pWO96dEu6WCQUBF1CdyiPsW

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	smartscreen_protected.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	smartscreen_protected.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	smartscreen_protected.exe

Themida packer 9 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2044-0-0x0000000000A90000-0x0000000001206000-memory.dmp	themida
behavioral1/memory/2044-2-0x0000000000A90000-0x0000000001206000-memory.dmp	themida
behavioral1/memory/2044-3-0x0000000000A90000-0x0000000001206000-memory.dmp	themida
behavioral1/memory/2044-4-0x0000000000A90000-0x0000000001206000-memory.dmp	themida
behavioral1/memory/2044-5-0x0000000000A90000-0x0000000001206000-memory.dmp	themida
behavioral1/memory/2044-6-0x0000000000A90000-0x0000000001206000-memory.dmp	themida
behavioral1/memory/2044-8-0x0000000000A90000-0x0000000001206000-memory.dmp	themida
behavioral1/memory/2044-7-0x0000000000A90000-0x0000000001206000-memory.dmp	themida
behavioral1/memory/2044-641-0x0000000000A90000-0x0000000001206000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1268429524-3929314613-1992311491-1000\desktop.ini	smartscreen_protected.exe
File opened for modification	C:\$Recycle.Bin\S-1-5-21-1268429524-3929314613-1992311491-1000\desktop.ini	smartscreen_protected.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2044	smartscreen_protected.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2044	smartscreen_protected.exe
2044	smartscreen_protected.exe
2044	smartscreen_protected.exe
2044	smartscreen_protected.exe
2044	smartscreen_protected.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1632	vssvc.exe
Token: SeRestorePrivilege	1632	vssvc.exe
Token: SeAuditPrivilege	1632	vssvc.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\smartscreen_protected.exe
"C:\Users\Admin\AppData\Local\Temp\smartscreen_protected.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:2044

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\$Recycle.Bin\S-1-5-21-1268429524-3929314613-1992311491-1000\desktop.ini

Filesize
129B

MD5
5f54d1240735d46980b776af554f44d3

SHA1
acf7707c08973ddfdb27cd361442ccfba355c888

SHA256
2c80619d7e7c58257293cda3a878c13e5856f4e06f6f90601276f7b9179c9e07

SHA512
b1f542f68a48608ae53904fbe2105bd8f3e544941abb38ec9d24cb7a26f916ef94cfb431cce0c64077dc2934913130d78492914a5e9ffc52f311e68217caef15

Download Submit
memory/2044-0-0x0000000000A90000-0x0000000001206000-memory.dmp

Filesize
7.5MB

Download
memory/2044-1-0x0000000077230000-0x0000000077232000-memory.dmp

Filesize
8KB

Download
memory/2044-2-0x0000000000A90000-0x0000000001206000-memory.dmp

Filesize
7.5MB

Download
memory/2044-3-0x0000000000A90000-0x0000000001206000-memory.dmp

Filesize
7.5MB

Download
memory/2044-4-0x0000000000A90000-0x0000000001206000-memory.dmp

Filesize
7.5MB

Download
memory/2044-5-0x0000000000A90000-0x0000000001206000-memory.dmp

Filesize
7.5MB

Download
memory/2044-6-0x0000000000A90000-0x0000000001206000-memory.dmp

Filesize
7.5MB

Download
memory/2044-8-0x0000000000A90000-0x0000000001206000-memory.dmp

Filesize
7.5MB

Download
memory/2044-7-0x0000000000A90000-0x0000000001206000-memory.dmp

Filesize
7.5MB

Download
memory/2044-641-0x0000000000A90000-0x0000000001206000-memory.dmp

Filesize
7.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads