fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59

Analysis

max time kernel
89s
max time network
158s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
02-08-2022 12:51

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General

Target

fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe
Size

5.9MB
MD5

943ba6acbdbeb3b0fda85f3f93983bc4
SHA1

eb26323a38c0114175ab44f65c659c528c03f9ef
SHA256

fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59
SHA512

eacd134975762f96c3653d8b2e35ca323eccee930593bb1c89ca395eb720a81a05aba3e9c06c31a500ebcbe661f5fe56c62a08bb4b71ec2623a25e4f0d1a69d2

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:

fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.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:

fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe

Loads dropped DLL 2 IoCs

Processes:

fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe

pid	process
1524	fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe
1524	fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1524-55-0x0000000000400000-0x0000000000A46000-memory.dmp	themida
behavioral1/memory/1524-57-0x0000000000400000-0x0000000000A46000-memory.dmp	themida
behavioral1/memory/1524-56-0x0000000000400000-0x0000000000A46000-memory.dmp	themida
behavioral1/memory/1524-60-0x0000000000400000-0x0000000000A46000-memory.dmp	themida
behavioral1/memory/1524-61-0x0000000000400000-0x0000000000A46000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.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\fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.exe
"C:\Users\Admin\AppData\Local\Temp\fc1a3019551235ad7643ea61afb149356a36d0cd03b375b5c9434c3270306e59.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:1524

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

\Users\Admin\AppData\Local\Temp\nst191E.tmp\INetC.dll
Filesize
25KB

MD5
40d7eca32b2f4d29db98715dd45bfac5

SHA1
124df3f617f562e46095776454e1c0c7bb791cc7

SHA256
85e03805f90f72257dd41bfdaa186237218bbb0ec410ad3b6576a88ea11dccb9

SHA512
5fd4f516ce23fb7e705e150d5c1c93fc7133694ba495fb73101674a528883a013a34ab258083aa7ce6072973b067a605158316a4c9159c1b4d765761f91c513d

Download Submit
\Users\Admin\AppData\Local\Temp\nst191E.tmp\xml.dll
Filesize
1.4MB

MD5
46555dd31218cea44c62879b12fdce46

SHA1
8bf3d8f184cb89c62183015651b1f370c9042cfb

SHA256
2952a2e5b11316ca5549c603b4303f0737b69fe973819826021d916ff4bf8f57

SHA512
2b181cca781dfdbfeeb495b254b46a9a6a6b13ba91cd7fa24db04824c12d81457920d03b49cd38383d7335ca37dfa803a99ad35cbae10a160b3203a96bfcce21

Download Submit
memory/1524-54-0x0000000075591000-0x0000000075593000-memory.dmp

Filesize
8KB

Download
memory/1524-55-0x0000000000400000-0x0000000000A46000-memory.dmp

Filesize
6.3MB

Download
memory/1524-57-0x0000000000400000-0x0000000000A46000-memory.dmp

Filesize
6.3MB

Download
memory/1524-56-0x0000000000400000-0x0000000000A46000-memory.dmp

Filesize
6.3MB

Download
memory/1524-60-0x0000000000400000-0x0000000000A46000-memory.dmp

Filesize
6.3MB

Download
memory/1524-61-0x0000000000400000-0x0000000000A46000-memory.dmp

Filesize
6.3MB

Download