f2b79ef543dcdc8c89d3638c12905d349d10d66559d1ec079a1345d3bde293bc

Analysis

max time kernel
144s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
12/10/2023, 00:03

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General

Target

f2b79ef543dcdc8c89d3638c12905d349d10d66559d1ec079a1345d3bde293bc.dll
Size

4.8MB
MD5

13c95507d20fef9e00b79cde2f69de9f
SHA1

e5a0d96b90363eb5e2b3fd2aa08ca33f8584ceaf
SHA256

f2b79ef543dcdc8c89d3638c12905d349d10d66559d1ec079a1345d3bde293bc
SHA512

ec580cac23823996b91c07cfca46bbec08e0206f0ba3f2abaf100635e0ec691cc2b2fbaa5b8b8130df6e390530f6a24fce8e95ec5de69dd1dbb70d24a44074f7
SSDEEP

98304:q2jMBmhNIu9x4EMa6PQovgKkHQl79eL17y+6/TkCeFO17:q2jM8NIuQEMa6/vFIQaR++QTkCeFO

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

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe

Themida packer 8 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/1948-0-0x0000000074360000-0x0000000074E36000-memory.dmp	themida
behavioral2/memory/1948-2-0x0000000074360000-0x0000000074E36000-memory.dmp	themida
behavioral2/memory/1948-3-0x0000000074360000-0x0000000074E36000-memory.dmp	themida
behavioral2/memory/1948-4-0x0000000074360000-0x0000000074E36000-memory.dmp	themida
behavioral2/memory/1948-5-0x0000000074360000-0x0000000074E36000-memory.dmp	themida
behavioral2/memory/1948-6-0x0000000074360000-0x0000000074E36000-memory.dmp	themida
behavioral2/memory/1948-7-0x0000000074360000-0x0000000074E36000-memory.dmp	themida
behavioral2/memory/1948-8-0x0000000074360000-0x0000000074E36000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1948	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1948	rundll32.exe
1948	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4712 wrote to memory of 1948	4712	rundll32.exe	85
PID 4712 wrote to memory of 1948	4712	rundll32.exe	85
PID 4712 wrote to memory of 1948	4712	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2b79ef543dcdc8c89d3638c12905d349d10d66559d1ec079a1345d3bde293bc.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4712
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2b79ef543dcdc8c89d3638c12905d349d10d66559d1ec079a1345d3bde293bc.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:1948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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/1948-0-0x0000000074360000-0x0000000074E36000-memory.dmp

Filesize
10.8MB

Download
memory/1948-1-0x00000000773D4000-0x00000000773D6000-memory.dmp

Filesize
8KB

Download
memory/1948-2-0x0000000074360000-0x0000000074E36000-memory.dmp

Filesize
10.8MB

Download
memory/1948-3-0x0000000074360000-0x0000000074E36000-memory.dmp

Filesize
10.8MB

Download
memory/1948-4-0x0000000074360000-0x0000000074E36000-memory.dmp

Filesize
10.8MB

Download
memory/1948-5-0x0000000074360000-0x0000000074E36000-memory.dmp

Filesize
10.8MB

Download
memory/1948-6-0x0000000074360000-0x0000000074E36000-memory.dmp

Filesize
10.8MB

Download
memory/1948-7-0x0000000074360000-0x0000000074E36000-memory.dmp

Filesize
10.8MB

Download
memory/1948-8-0x0000000074360000-0x0000000074E36000-memory.dmp

Filesize
10.8MB

Download