45b98eb93ac47dc935eef58720a7b84e952eda334b4f24315282d938bbaf49c1

Analysis

max time kernel
291s
max time network
136s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
01-08-2024 07:59

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General

Target

BearFlix\strip.exe
Size

7.1MB
MD5

43971e360fe1b457f22b16f5e25d51a2
SHA1

ed96672880b32da758d841cb9882037057105290
SHA256

c606a1a71374ee7b0fb844c47c448bab0234d9162951f488f07edd5664a88c16
SHA512

85b9e91f25f5ded543f05ad2d9265564f3585f0ce86c02f65b3e766c0a17da1b2c427d54500ed6bf23fcb5a75e10ea1f4d1a82db87fb91f7768d0d35a4a9518f
SSDEEP

196608:WZDBLzV8ld98BlON2jnbNswvBXvowJgzl7GSZn7ftm:WZD+90jVvBXvoww77rc

Score

9^/10

agilenet discovery 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__	strip.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\SystemBiosVersion	strip.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	strip.exe

Loads dropped DLL 1 IoCs

pid	Process
2384	strip.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral7/memory/2384-1-0x00000000013D0000-0x0000000001AE2000-memory.dmp	agile_net

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral7/files/0x000400000001db27-8.dat	themida
behavioral7/memory/2384-9-0x0000000070460000-0x0000000070A79000-memory.dmp	themida
behavioral7/memory/2384-11-0x0000000070460000-0x0000000070A79000-memory.dmp	themida
behavioral7/memory/2384-10-0x0000000070460000-0x0000000070A79000-memory.dmp	themida
behavioral7/memory/2384-14-0x0000000070460000-0x0000000070A79000-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	strip.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2384	strip.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1496	2384	WerFault.exe	30

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	strip.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 1496	2384	strip.exe	32
PID 2384 wrote to memory of 1496	2384	strip.exe	32
PID 2384 wrote to memory of 1496	2384	strip.exe	32
PID 2384 wrote to memory of 1496	2384	strip.exe	32

C:\Users\Admin\AppData\Local\Temp\BearFlix\strip.exe
"C:\Users\Admin\AppData\Local\Temp\BearFlix\strip.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 656
  2⤵
  - Program crash
  PID:1496

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\2e082fe2-809f-4139-90cf-9dcb3fb2c4b1\AgileDotNetRT.dll

Filesize
2.3MB

MD5
105e678e6ee84e0fa7fbe34df1f9639c

SHA1
17e4d775f4405e3a81a793b5bf775e9c95da5af9

SHA256
4ef4551d44fde6e46c470314b0b89f6418a54eee3f1ad9eb7456b2a20e3065a2

SHA512
3a15a2f188a4f572923d1999a77ef6d14b243d1c0e3a4442b5a6825756b93b40e2c6197d106df62ae3b427c62ff6b21fc2fe8181a3b6709e9991f1ddd36e5689

Download Submit
memory/2384-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/2384-1-0x00000000013D0000-0x0000000001AE2000-memory.dmp

Filesize
7.1MB

Download
memory/2384-2-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2384-9-0x0000000070460000-0x0000000070A79000-memory.dmp

Filesize
6.1MB

Download
memory/2384-12-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2384-11-0x0000000070460000-0x0000000070A79000-memory.dmp

Filesize
6.1MB

Download
memory/2384-13-0x00000000748F0000-0x0000000074970000-memory.dmp

Filesize
512KB

Download
memory/2384-10-0x0000000070460000-0x0000000070A79000-memory.dmp

Filesize
6.1MB

Download
memory/2384-14-0x0000000070460000-0x0000000070A79000-memory.dmp

Filesize
6.1MB

Download
memory/2384-15-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/2384-16-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads