1d11b355d92df2cf0a2cd4a99eb6f504054c06f3a9dcd1aa323db80995cd34ac

Analysis

max time kernel
146s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
24-08-2022 15:25

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General

Target

Elexe.exe
Size

3.6MB
MD5

c667f56e9478041be404800045530768
SHA1

0f2b5b78640d29c151144655df527a16d0e29782
SHA256

1d11b355d92df2cf0a2cd4a99eb6f504054c06f3a9dcd1aa323db80995cd34ac
SHA512

383e14dbeac1fcb82beb37815d70f2bb04bd82faa328f1f5c5df839abfffae1bdf3cd264f219747fd58a2dcb491ba38df39cded4d5b39cf6686d7d8b9c17d233
SSDEEP

98304:aBLr+jWK685nOwHaIo3q1+pa51rOVRf9TXUZ9C4smmz:gX2bNkw6Ioaspa51S9QbC44

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:

Elexe.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Elexe.exe
Downloads MZ/PE file

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

Elexe.exe

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

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/4380-136-0x0000000000450000-0x0000000000E22000-memory.dmp	themida
behavioral2/memory/4380-137-0x0000000000450000-0x0000000000E22000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Elexe.exe

description ioc process

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

Processes:

Elexe.exe

pid process

4380 Elexe.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1584 3428 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Elexe.exe

description pid process

Token: SeDebugPrivilege 4380 Elexe.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

Elexe.exe

pid process

4380 Elexe.exe

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

pid	process
4380	Elexe.exe

pid	pid_target	process	target process
1584	3428	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	4380	Elexe.exe

pid	process
4380	Elexe.exe

C:\Users\Admin\AppData\Local\Temp\Elexe.exe
"C:\Users\Admin\AppData\Local\Temp\Elexe.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
- Suspicious use of FindShellTrayWindow
PID:4380

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 456 -p 3428 -ip 3428
1⤵
PID:4332

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 3428 -s 1768
1⤵
- Program crash
PID:1584

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4380-132-0x0000000000450000-0x0000000000E22000-memory.dmp

Filesize
9.8MB

Download
memory/4380-136-0x0000000000450000-0x0000000000E22000-memory.dmp

Filesize
9.8MB

Download
memory/4380-137-0x0000000000450000-0x0000000000E22000-memory.dmp

Filesize
9.8MB

Download
memory/4380-138-0x0000000077510000-0x00000000776B3000-memory.dmp

Filesize
1.6MB

Download
memory/4380-139-0x0000000005F81000-0x0000000005F86000-memory.dmp

Filesize
20KB

Download
memory/4380-141-0x0000000005F81000-0x0000000005F86000-memory.dmp

Filesize
20KB

Download
memory/4380-140-0x0000000005F81000-0x0000000005F86000-memory.dmp

Filesize
20KB

Download
memory/4380-142-0x0000000005F81000-0x0000000005F86000-memory.dmp

Filesize
20KB

Download
memory/4380-143-0x0000000005F81000-0x0000000005F86000-memory.dmp

Filesize
20KB

Download
memory/4380-144-0x0000000009D60000-0x0000000009D68000-memory.dmp

Filesize
32KB

Download
memory/4380-145-0x000000000C540000-0x000000000C578000-memory.dmp

Filesize
224KB

Download
memory/4380-146-0x000000000C510000-0x000000000C51E000-memory.dmp

Filesize
56KB

Download
memory/4380-147-0x0000000000450000-0x0000000000E22000-memory.dmp

Filesize
9.8MB

Download
memory/4380-148-0x0000000077510000-0x00000000776B3000-memory.dmp

Filesize
1.6MB

Download