88418205ad303c208f27e1efeef81032ce7373d0d005cdbe4d890d7351b5674c

Analysis

max time kernel
24s
max time network
17s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
01-05-2024 00:51

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General

Target

hacked client (rats) LMAO/krypton.exe
Size

3.8MB
MD5

a7beb58e9507171e44455f1f823286ab
SHA1

3689b44d42583008d5d158968bf7e81c3c0ccf3c
SHA256

e781c6915a983883f16ed22a1236e9bc93af081fb5cd3b8ec4c554ceb18183db
SHA512

35b7714979773d60296d81f57c4805cc0160db8b881a27ef4370718049949940f9d5734566b6398d5ab7b32800bf50e6f54bdd23150ad02ac60f2b7b55bd4b2b
SSDEEP

98304:wpT46CmfHy/AnF2sq2F2LpwgYd8781v4yc3r:w5nCt4F2sq25jq73yc7

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:

krypton.exe

description ioc process

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

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

krypton.exe

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

Themida packer 9 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral9/memory/4596-0-0x00007FF734540000-0x00007FF734F57000-memory.dmp	themida
behavioral9/memory/4596-4-0x00007FF734540000-0x00007FF734F57000-memory.dmp	themida
behavioral9/memory/4596-3-0x00007FF734540000-0x00007FF734F57000-memory.dmp	themida
behavioral9/memory/4596-2-0x00007FF734540000-0x00007FF734F57000-memory.dmp	themida
behavioral9/memory/4596-5-0x00007FF734540000-0x00007FF734F57000-memory.dmp	themida
behavioral9/memory/4596-6-0x00007FF734540000-0x00007FF734F57000-memory.dmp	themida
behavioral9/memory/4596-7-0x00007FF734540000-0x00007FF734F57000-memory.dmp	themida
behavioral9/memory/4596-8-0x00007FF734540000-0x00007FF734F57000-memory.dmp	themida
behavioral9/memory/4596-9-0x00007FF734540000-0x00007FF734F57000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

krypton.exe

description ioc process

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

Processes:

krypton.exe

pid process

4596 krypton.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

krypton.exe

pid process

4596 krypton.exe
4596 krypton.exe
4596 krypton.exe
4596 krypton.exe
4596 krypton.exe
4596 krypton.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

krypton.exe

pid process

4596 krypton.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

krypton.exe

pid process

4596 krypton.exe
4596 krypton.exe
4596 krypton.exe

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

pid	process
4596	krypton.exe

pid	process
4596	krypton.exe
4596	krypton.exe
4596	krypton.exe
4596	krypton.exe
4596	krypton.exe
4596	krypton.exe

pid	process
4596	krypton.exe

pid	process
4596	krypton.exe
4596	krypton.exe
4596	krypton.exe

C:\Users\Admin\AppData\Local\Temp\hacked client (rats) LMAO\krypton.exe
"C:\Users\Admin\AppData\Local\Temp\hacked client (rats) LMAO\krypton.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 behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:4596

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/4596-0-0x00007FF734540000-0x00007FF734F57000-memory.dmp

Filesize
10.1MB

Download
memory/4596-1-0x00007FFFD94A0000-0x00007FFFD967B000-memory.dmp

Filesize
1.9MB

Download
memory/4596-4-0x00007FF734540000-0x00007FF734F57000-memory.dmp

Filesize
10.1MB

Download
memory/4596-3-0x00007FF734540000-0x00007FF734F57000-memory.dmp

Filesize
10.1MB

Download
memory/4596-2-0x00007FF734540000-0x00007FF734F57000-memory.dmp

Filesize
10.1MB

Download
memory/4596-5-0x00007FF734540000-0x00007FF734F57000-memory.dmp

Filesize
10.1MB

Download
memory/4596-6-0x00007FF734540000-0x00007FF734F57000-memory.dmp

Filesize
10.1MB

Download
memory/4596-7-0x00007FF734540000-0x00007FF734F57000-memory.dmp

Filesize
10.1MB

Download
memory/4596-8-0x00007FF734540000-0x00007FF734F57000-memory.dmp

Filesize
10.1MB

Download
memory/4596-9-0x00007FF734540000-0x00007FF734F57000-memory.dmp

Filesize
10.1MB

Download
memory/4596-10-0x00007FFFD94A0000-0x00007FFFD967B000-memory.dmp

Filesize
1.9MB

Download