cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d

Analysis

max time kernel
80s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
02-08-2022 12:50

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General

Target

cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe
Size

5.9MB
MD5

cfc12312e1e6b7e6cb2233edd2e2b157
SHA1

b1cdda4c80c4a0e132d62d33e53ab092b00b6efd
SHA256

cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d
SHA512

5bc0a02e6bd54beaad09d7a917f84f8cc30ba7785b6f2a35e8b5f230703e286ab006b41b9121f30ee84327878b2802f9ddb9ec0322808044bc04a768b722f912

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:

cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.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:

cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe

Loads dropped DLL 3 IoCs

Processes:

cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe

pid	process
4072	cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe
4072	cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe
4072	cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/4072-130-0x0000000000400000-0x0000000000A43000-memory.dmp	themida
behavioral2/memory/4072-131-0x0000000000400000-0x0000000000A43000-memory.dmp	themida
behavioral2/memory/4072-132-0x0000000000400000-0x0000000000A43000-memory.dmp	themida
behavioral2/memory/4072-137-0x0000000000400000-0x0000000000A43000-memory.dmp	themida
behavioral2/memory/4072-138-0x0000000000400000-0x0000000000A43000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

C:\Users\Admin\AppData\Local\Temp\cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe
"C:\Users\Admin\AppData\Local\Temp\cb691234a2b71c78e2b8dc385a3a619cedc01cbec7c4eddef5c93ce9261bf50d.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4072

Network

MITRE ATT&CK Matrix ATT&CK v6

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsyF68B.tmp\INetC.dll
Filesize
25KB

MD5
40d7eca32b2f4d29db98715dd45bfac5

SHA1
124df3f617f562e46095776454e1c0c7bb791cc7

SHA256
85e03805f90f72257dd41bfdaa186237218bbb0ec410ad3b6576a88ea11dccb9

SHA512
5fd4f516ce23fb7e705e150d5c1c93fc7133694ba495fb73101674a528883a013a34ab258083aa7ce6072973b067a605158316a4c9159c1b4d765761f91c513d

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsyF68B.tmp\INetC.dll
Filesize
25KB

MD5
40d7eca32b2f4d29db98715dd45bfac5

SHA1
124df3f617f562e46095776454e1c0c7bb791cc7

SHA256
85e03805f90f72257dd41bfdaa186237218bbb0ec410ad3b6576a88ea11dccb9

SHA512
5fd4f516ce23fb7e705e150d5c1c93fc7133694ba495fb73101674a528883a013a34ab258083aa7ce6072973b067a605158316a4c9159c1b4d765761f91c513d

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsyF68B.tmp\xml.dll
Filesize
1.3MB

MD5
1dca72088c0b40d96e1689cbcb32693b

SHA1
9ddcb2cce2887ed53d4041ca4a9b27e6c5a91382

SHA256
aa2f7f66c00b1e8c6a0bba10ceaa9c0711befcb37f3cd8d5eb88f5d1a9cdb386

SHA512
8e6721848681472b125a68955bfd01b84a1089ab6025969b95b142fcfac9760d3e7f9467387e2853457ed6c28f4f1ee31016b949b4e87d7d3ea532180b678d9b

Download Submit
memory/4072-130-0x0000000000400000-0x0000000000A43000-memory.dmp

Filesize
6.3MB

Download
memory/4072-131-0x0000000000400000-0x0000000000A43000-memory.dmp

Filesize
6.3MB

Download
memory/4072-132-0x0000000000400000-0x0000000000A43000-memory.dmp

Filesize
6.3MB

Download
memory/4072-136-0x00000000031A1000-0x00000000031A5000-memory.dmp

Filesize
16KB

Download
memory/4072-137-0x0000000000400000-0x0000000000A43000-memory.dmp

Filesize
6.3MB

Download
memory/4072-138-0x0000000000400000-0x0000000000A43000-memory.dmp

Filesize
6.3MB

Download