f1fc91c1b3a91e8d3f65d9dacc2a2b44d55a39677e15f654cba6c88b38eeda3c

Analysis

max time kernel
119s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11/11/2024, 03:03

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe
Size 187KB
Sample241111-dkb4ea1enr
SHA256 f1fc91c1b3a91e8d3f65d9dacc2a2b44d55a39677e15f654cba6c88b38eeda3c
MD5 aacbee60696c8f5c0f514d7ba89230b7
SHA1 a777dcdce94fdc1a9156ecf511337d0001514697
SHA512 5cfee2a6565e0b5cf41d3492245e03899e43b3a420591200a5a5e617485a1ea2c10c117eae7dc0f33aec1ca42fff547bbcad68ed6097372033ea992b51d3ad81
SSDEEP 3072:FuOFvvJwfNJxrt0YVDXz+uUsI2E9yRdl6PNEh2aOUQS7bhfNH6iQ:FfvvJa5t0ez+u9I6SV+ySfhfS
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
14	2916	rundll32.exe
20	2916	rundll32.exe
21	2916	rundll32.exe
22	2916	rundll32.exe
35	2916	rundll32.exe
36	2916	rundll32.exe
42	2916	rundll32.exe
47	2916	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2908	bvxqq.exe

Executes dropped EXE 1 IoCs

pid	Process
2908	bvxqq.exe

Loads dropped DLL 1 IoCs

pid	Process
2916	rundll32.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sDisk = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\tpjcpiu\\hoazt.dll\",SSL_clear"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\tpjcpiu	bvxqq.exe
File created	\??\c:\Program Files\tpjcpiu\hoazt.dll	bvxqq.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bvxqq.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3840	cmd.exe
3520	PING.EXE

Checks processor information in registry 2 TTPs 2 IoCs

Processor 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\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3520	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2916	rundll32.exe
2916	rundll32.exe
2916	rundll32.exe
2916	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3288	050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe
2908	bvxqq.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 3840	3288	050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe	85
PID 3288 wrote to memory of 3840	3288	050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe	85
PID 3288 wrote to memory of 3840	3288	050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe	85
PID 3840 wrote to memory of 3520	3840	cmd.exe	88
PID 3840 wrote to memory of 3520	3840	cmd.exe	88
PID 3840 wrote to memory of 3520	3840	cmd.exe	88
PID 3840 wrote to memory of 2908	3840	cmd.exe	89
PID 3840 wrote to memory of 2908	3840	cmd.exe	89
PID 3840 wrote to memory of 2908	3840	cmd.exe	89
PID 2908 wrote to memory of 2916	2908	bvxqq.exe	91
PID 2908 wrote to memory of 2916	2908	bvxqq.exe	91
PID 2908 wrote to memory of 2916	2908	bvxqq.exe	91

C:\Users\Admin\AppData\Local\Temp\050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe
"C:\Users\Admin\AppData\Local\Temp\050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\bvxqq.exe "C:\Users\Admin\AppData\Local\Temp\050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3840
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3520
- - C:\Users\Admin\AppData\Local\Temp\bvxqq.exe
    C:\Users\Admin\AppData\Local\Temp\\bvxqq.exe "C:\Users\Admin\AppData\Local\Temp\050e7841567c486e6286d8edd343ddce1b2a07a3a3c3d653cdec8b93736663ddN.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2908
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\tpjcpiu\hoazt.dll",SSL_clear C:\Users\Admin\AppData\Local\Temp\bvxqq.exe
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

bvxqq.exe

Path C:\Users\Admin\AppData\Local\Temp\bvxqq.exe
Size 187KB
SHA256 d94b7d768344e794ff26125db37fb8ad0e306bd53d764f48be66f32259178fd8
MD5 3b22594c669d2ab818da24cc8b242367
SHA1 5faf26d83cd9f79df90848f3ef5a71176e4fe14a
SHA512 910f558a4f35ddadf510e794142fecef2c7e2dbdaae9dd65a8f8c05aa099cd67e55977385d17399fc517b82e3f4e0866076f0675c4cd7e138a88911646235607
SSDEEP 3072:FuOFvvJwfNJxrt0YVDXz+uUsI2E9yRdl6PNEh2aOUQS7bhfNH6iJ:FfvvJa5t0ez+u9I6SV+ySfhfT
MD5 SHA1 SHA512 SSDEEP

Submit Download

hoazt.dll

Path \??\c:\Program Files\tpjcpiu\hoazt.dll
Size 152KB
SHA256 4d237fa7460bcd95e4f75722e384ba990ddd227c31742e4cb1f37f8b025b5975
MD5 b591d558a7fba3f55b06d79ac11f6940
SHA1 6512ce8aee883716ef25e0439342a69da83133df
SHA512 df3ab6d18884cde27ee1751ac3cc158174099730f13f18bf913de32c879859b5b63b82cbfead01f37f6ef6c1231b30b7dce6e2466b7261597f0e3a49425d6efd
SSDEEP 3072:+Xyxum6XqmeJtY/VSSmZ1QAT25omGiDTKWb95C51jnWb1VOZ47vm2E+RLxwJh:+ixr5bVSmfQg25zvDTfb95ajs1VO672
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2908-8-0x0000000000400000-0x0000000000435024-memory.dmp

Download

memory/2916-11-0x0000000010000000-0x0000000010059000-memory.dmp

Download

memory/2916-12-0x0000000010000000-0x0000000010059000-memory.dmp

Download

memory/2916-14-0x0000000010037000-0x0000000010038000-memory.dmp

Download

memory/2916-15-0x0000000010000000-0x0000000010059000-memory.dmp

Download

memory/3288-0-0x0000000000400000-0x0000000000435024-memory.dmp

Download

memory/3288-2-0x0000000000400000-0x0000000000435024-memory.dmp

Download