45b98eb93ac47dc935eef58720a7b84e952eda334b4f24315282d938bbaf49c1

Analysis

max time kernel
144s
max time network
281s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-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
2144	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
behavioral8/memory/2144-1-0x00000000000F0000-0x0000000000802000-memory.dmp	agile_net

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral8/files/0x000800000002347a-7.dat	themida
behavioral8/memory/2144-11-0x0000000071DD0000-0x00000000723E9000-memory.dmp	themida
behavioral8/memory/2144-12-0x0000000071DD0000-0x00000000723E9000-memory.dmp	themida
behavioral8/memory/2144-13-0x0000000071DD0000-0x00000000723E9000-memory.dmp	themida
behavioral8/memory/2144-16-0x0000000071DD0000-0x00000000723E9000-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
2144	strip.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
2832	2144	WerFault.exe	82
4300	2144	WerFault.exe	82
1552	2144	WerFault.exe	82

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

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
PID:2144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 1104
  2⤵
  - Program crash
  PID:2832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 1064
  2⤵
  - Program crash
  PID:4300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 1100
  2⤵
  - Program crash
  PID:1552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2144 -ip 2144
1⤵
PID:2232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2144 -ip 2144
1⤵
PID:4976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2144 -ip 2144
1⤵
PID:2488

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/2144-0-0x00000000751BE000-0x00000000751BF000-memory.dmp

Filesize
4KB

Download
memory/2144-1-0x00000000000F0000-0x0000000000802000-memory.dmp

Filesize
7.1MB

Download
memory/2144-2-0x00000000751B0000-0x0000000075960000-memory.dmp

Filesize
7.7MB

Download
memory/2144-3-0x0000000005060000-0x00000000053B4000-memory.dmp

Filesize
3.3MB

Download
memory/2144-11-0x0000000071DD0000-0x00000000723E9000-memory.dmp

Filesize
6.1MB

Download
memory/2144-12-0x0000000071DD0000-0x00000000723E9000-memory.dmp

Filesize
6.1MB

Download
memory/2144-13-0x0000000071DD0000-0x00000000723E9000-memory.dmp

Filesize
6.1MB

Download
memory/2144-14-0x00000000751B0000-0x0000000075960000-memory.dmp

Filesize
7.7MB

Download
memory/2144-15-0x0000000073C40000-0x0000000073CC9000-memory.dmp

Filesize
548KB

Download
memory/2144-16-0x0000000071DD0000-0x00000000723E9000-memory.dmp

Filesize
6.1MB

Download
memory/2144-17-0x00000000751B0000-0x0000000075960000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads