3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94

General

Target

3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94.exe
Size

7.9MB
MD5

6a12088427273b5502f9c2fb46871bf3
SHA1

f60b28e1993e5010a21858edcd5e2da89c6839ee
SHA256

3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94
SHA512

295f35a2f0a7eb0af254955e856131824c3874ce0d2359b6b488ccb5034a454b03ecdea13841fe2684653273e9a25467eacfca5e72b649067d4dafd5609a0854

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:

3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/4676-130-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp	themida
behavioral2/memory/4676-131-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp	themida
behavioral2/memory/4676-132-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp	themida
behavioral2/memory/4676-133-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp	themida
behavioral2/memory/4676-134-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94.exe

Drops file in Windows directory 8 IoCs

Processes:

TiWorker.exesvchost.exe

description	ioc	process
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

svchost.exeTiWorker.exe

description	pid	process
Token: SeShutdownPrivilege	1504	svchost.exe
Token: SeCreatePagefilePrivilege	1504	svchost.exe
Token: SeShutdownPrivilege	1504	svchost.exe
Token: SeCreatePagefilePrivilege	1504	svchost.exe
Token: SeShutdownPrivilege	1504	svchost.exe
Token: SeCreatePagefilePrivilege	1504	svchost.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe
Token: SeRestorePrivilege	4304	TiWorker.exe
Token: SeSecurityPrivilege	4304	TiWorker.exe
Token: SeBackupPrivilege	4304	TiWorker.exe

C:\Users\Admin\AppData\Local\Temp\3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94.exe
"C:\Users\Admin\AppData\Local\Temp\3861d981ea55e042a3aaaef01a0753f7eefc7aea7f84ffcc83c1b69c8ac6ee94.exe"
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
PID:4676

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1504

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4304

Network

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/1504-135-0x00000148C4D60000-0x00000148C4D70000-memory.dmp

Filesize
64KB

Download
memory/1504-136-0x00000148C5320000-0x00000148C5330000-memory.dmp

Filesize
64KB

Download
memory/1504-137-0x00000148C79A0000-0x00000148C79A4000-memory.dmp

Filesize
16KB

Download
memory/4676-130-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp

Filesize
18.3MB

Download
memory/4676-131-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp

Filesize
18.3MB

Download
memory/4676-132-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp

Filesize
18.3MB

Download
memory/4676-133-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp

Filesize
18.3MB

Download
memory/4676-134-0x00007FF77C450000-0x00007FF77D6A4000-memory.dmp

Filesize
18.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads