8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152

Analysis

max time kernel
118s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10/11/2024, 04:29

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General

Target
8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.exe
Size 382KB
Sample241110-e4c1gsspen
SHA256 8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152
MD5 de5072f7ebdf213bced91ee16c370d30
SHA1 3f83d41cf2eff016f7be5ba0a626beff73481105
SHA512 dccbd6d52eab24698522f063731e5f428dc9e1f347e9e7dba79f04cf905960219c5952011bdfcbe8d80d28cf3b922f437fe8e9e0e775e962cfccf82a43cccc9a
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19:UGmTau+mMC4ITJE8dfSJ/F1
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 4 IoCs

flow	pid	Process
13	4184	rundll32.exe
33	4184	rundll32.exe
34	4184	rundll32.exe
41	4184	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3812	ixflz.exe

Executes dropped EXE 1 IoCs

pid	Process
3812	ixflz.exe

Loads dropped DLL 1 IoCs

pid	Process
4184	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\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\blgdo\\wqrxn.dll\",InitEngine"	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)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\s:	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\blgdo	ixflz.exe
File created	\??\c:\Program Files\blgdo\wqrxn.dll	ixflz.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	8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.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	ixflz.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
4908	cmd.exe
1728	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
1728	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4184	rundll32.exe
4184	rundll32.exe
4184	rundll32.exe
4184	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4184	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2468	8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.exe
3812	ixflz.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 4908	2468	8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.exe	85
PID 2468 wrote to memory of 4908	2468	8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.exe	85
PID 2468 wrote to memory of 4908	2468	8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.exe	85
PID 4908 wrote to memory of 1728	4908	cmd.exe	87
PID 4908 wrote to memory of 1728	4908	cmd.exe	87
PID 4908 wrote to memory of 1728	4908	cmd.exe	87
PID 4908 wrote to memory of 3812	4908	cmd.exe	89
PID 4908 wrote to memory of 3812	4908	cmd.exe	89
PID 4908 wrote to memory of 3812	4908	cmd.exe	89
PID 3812 wrote to memory of 4184	3812	ixflz.exe	91
PID 3812 wrote to memory of 4184	3812	ixflz.exe	91
PID 3812 wrote to memory of 4184	3812	ixflz.exe	91

C:\Users\Admin\AppData\Local\Temp\8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.exe
"C:\Users\Admin\AppData\Local\Temp\8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ixflz.exe "C:\Users\Admin\AppData\Local\Temp\8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4908
- - 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:1728
- - C:\Users\Admin\AppData\Local\Temp\ixflz.exe
    C:\Users\Admin\AppData\Local\Temp\\ixflz.exe "C:\Users\Admin\AppData\Local\Temp\8321d89f9b1b29c59210cc6046cd32740b4b32a194133f399c18ff793138a152N.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:3812
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\blgdo\wqrxn.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\ixflz.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:4184

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

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Downloads

ixflz.exe

Path C:\Users\Admin\AppData\Local\Temp\ixflz.exe
Size 383KB
SHA256 08d5cae155c506a87ca7206ec37ab1aa8843980f1b52c9dab8de1f28db914ee0
MD5 ebb3277a6c8094c16f0015260e5c9079
SHA1 15bf5d6131a578d71b603e0a1525ab74b1ca2d0c
SHA512 c49cfebb29f5ba543e8f2249856e0ca0e77d1b6876e62b00e8427d6befd23376430d0ce3305687627cd5cfeb5421eb28239e8c25737e12f5be2f13e11c529ad7
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19:UGmTau+mMC4ITJE8dfSJ/F1
MD5 SHA1 SHA512 SSDEEP

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wqrxn.dll

Path \??\c:\Program Files\blgdo\wqrxn.dll
Size 176KB
SHA256 41505c910ef58bd6bfe500f536411e5430f5133f60e181123ddcdd1756a1519e
MD5 ecfc4e893a6c8f65124ba613834caecc
SHA1 742d651f0f1621839b377c7853848182628e9650
SHA512 1b522dfd302ada42d495e8001d52b5c04a71c75191f4d2b423c4529ac3896fc766197c8b9f5005576de6bf2588e24ae47a0724bf49e63eb039f86d1af23d0616
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFooc+:1Jv2tOItshGYdMnYYVjasKbOWSFof+
MD5 SHA1 SHA512 SSDEEP

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memory/2468-0-0x0000000000400000-0x0000000000492000-memory.dmp

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memory/2468-2-0x0000000000400000-0x0000000000492000-memory.dmp

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memory/3812-7-0x0000000000400000-0x0000000000492000-memory.dmp

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memory/4184-11-0x000000001005A000-0x000000001005B000-memory.dmp

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memory/4184-10-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/4184-12-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/4184-14-0x0000000010000000-0x0000000010067000-memory.dmp

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