d37c8dd3fc3ea661959c1daf53a68eac6cf1e88add3c6465a9f73b8707616051

Resubmissions

09-05-2023 00:46

230509-a459tade92 7

09-05-2023 00:38

230509-ay2dnsde74 9

Analysis

max time kernel
135s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2023 00:38

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General

Target

jli.dll
Size

3.9MB
MD5

f07706176113cf4b97d4cdfc857347fe
SHA1

7757df85dffda89be5241616be2ec885e77d3a42
SHA256

1d3a991fcaeecf13babe0fa03994bdd098002bf45aef0eec47b67e73f9c86572
SHA512

3be9e56419302287fb039ad36859ac0783544066ae08a77d1d63679b6929091c16d21286bdcaece580e576647f5a5556490b6fb9b234f7bba240440983cc6ed1
SSDEEP

98304:4c2Hi8OKi8MYV7N4iixKqZpW2kR41p0z1gwOfVlHgHN:41i8G8xsAOplt1yzOtFg

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 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral20/memory/1648-133-0x0000000002870000-0x000000000329C000-memory.dmp	themida
behavioral20/memory/1648-134-0x0000000002870000-0x000000000329C000-memory.dmp	themida
behavioral20/memory/1648-135-0x0000000002870000-0x000000000329C000-memory.dmp	themida
behavioral20/memory/1648-136-0x0000000002870000-0x000000000329C000-memory.dmp	themida
behavioral20/memory/1648-137-0x0000000002870000-0x000000000329C000-memory.dmp	themida
behavioral20/memory/1648-138-0x0000000002870000-0x000000000329C000-memory.dmp	themida
behavioral20/memory/1648-139-0x0000000002870000-0x000000000329C000-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

1648 rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

988 1648 WerFault.exe rundll32.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

1648 rundll32.exe
1648 rundll32.exe

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

pid	process
1648	rundll32.exe

pid	pid_target	process	target process
988	1648	WerFault.exe	rundll32.exe

pid	process
1648	rundll32.exe
1648	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 2160 wrote to memory of 1648	2160	rundll32.exe	rundll32.exe
PID 2160 wrote to memory of 1648	2160	rundll32.exe	rundll32.exe
PID 2160 wrote to memory of 1648	2160	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jli.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2160

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jli.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
PID:1648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 724
3⤵
- Program crash
PID:988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1648 -ip 1648
1⤵
PID:1244

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/1648-133-0x0000000002870000-0x000000000329C000-memory.dmp

Filesize
10.2MB

Download
memory/1648-134-0x0000000002870000-0x000000000329C000-memory.dmp

Filesize
10.2MB

Download
memory/1648-135-0x0000000002870000-0x000000000329C000-memory.dmp

Filesize
10.2MB

Download
memory/1648-136-0x0000000002870000-0x000000000329C000-memory.dmp

Filesize
10.2MB

Download
memory/1648-137-0x0000000002870000-0x000000000329C000-memory.dmp

Filesize
10.2MB

Download
memory/1648-138-0x0000000002870000-0x000000000329C000-memory.dmp

Filesize
10.2MB

Download
memory/1648-139-0x0000000002870000-0x000000000329C000-memory.dmp

Filesize
10.2MB

Download