4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79d

Analysis

max time kernel
113s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06/11/2024, 22:50

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General

Target
4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.exe
Size 191KB
Sample241106-2sfcsszfkr
SHA256 4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79d
MD5 eb43bac58c01723fab95ee80956c31c0
SHA1 01d77ca73adebabaf9e24d25d6904490bd39ece5
SHA512 52ceb3de0ad304709f77b0872b694e9e2b3a6502d19a2ded756073d1428530e1bad34ac5ceb225fdcce9163c23d9e6401de2b5e0c3ecf98e450b065dfbd5ae92
SSDEEP 3072:QoiD6UJRpHOrBbsfxm/MxlQq1IcB9nXg88LIHfj68agvkvhBkPhIe/yL6u:EDJTOrBQgMNIcBBQ1I/jogvEZ
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

aspackv2 bootkit discovery persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 13 IoCs

flow	pid	Process
14	3184	rundll32.exe
15	3184	rundll32.exe
18	3184	rundll32.exe
19	3184	rundll32.exe
25	3184	rundll32.exe
26	3184	rundll32.exe
40	3184	rundll32.exe
41	3184	rundll32.exe
42	3184	rundll32.exe
47	3184	rundll32.exe
49	3184	rundll32.exe
53	3184	rundll32.exe
54	3184	rundll32.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0011000000023a14-14.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
4480	xuqns.exe

Executes dropped EXE 1 IoCs

pid	Process
4480	xuqns.exe

Loads dropped DLL 1 IoCs

pid	Process
3184	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Micro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\qzvbn\\hrcxl.dll\",method"	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)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\j:	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)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	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\qzvbn	xuqns.exe
File created	\??\c:\Program Files\qzvbn\hrcxl.dll	xuqns.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xuqns.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
1632	cmd.exe
4156	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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4156	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3184	rundll32.exe
3184	rundll32.exe
3184	rundll32.exe
3184	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3184	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2708	4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.exe
4480	xuqns.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 1632	2708	4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.exe	88
PID 2708 wrote to memory of 1632	2708	4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.exe	88
PID 2708 wrote to memory of 1632	2708	4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.exe	88
PID 1632 wrote to memory of 4156	1632	cmd.exe	91
PID 1632 wrote to memory of 4156	1632	cmd.exe	91
PID 1632 wrote to memory of 4156	1632	cmd.exe	91
PID 1632 wrote to memory of 4480	1632	cmd.exe	93
PID 1632 wrote to memory of 4480	1632	cmd.exe	93
PID 1632 wrote to memory of 4480	1632	cmd.exe	93
PID 4480 wrote to memory of 3184	4480	xuqns.exe	94
PID 4480 wrote to memory of 3184	4480	xuqns.exe	94
PID 4480 wrote to memory of 3184	4480	xuqns.exe	94

C:\Users\Admin\AppData\Local\Temp\4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.exe
"C:\Users\Admin\AppData\Local\Temp\4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xuqns.exe "C:\Users\Admin\AppData\Local\Temp\4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1632
- - 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:4156
- - C:\Users\Admin\AppData\Local\Temp\xuqns.exe
    C:\Users\Admin\AppData\Local\Temp\\xuqns.exe "C:\Users\Admin\AppData\Local\Temp\4cd4d80ffc42f7866e4affbe11e35c41c5993ac6f51a5530f43d6b097003d79dN.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:4480
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\qzvbn\hrcxl.dll",method C:\Users\Admin\AppData\Local\Temp\xuqns.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:3184

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

xuqns.exe

Path C:\Users\Admin\AppData\Local\Temp\xuqns.exe
Size 191KB
SHA256 67fbfc0d15e9c4a43eee10aef0d852e47aad52a32e680fe597a3b0f89048d2d4
MD5 bc6b66e9a41c3795d9e8e7bcae19f99e
SHA1 d7ce233e9719275cc103049d92e224f8d3109da7
SHA512 9d7e2efdc703565b925841064fa2b84e3579367e06a292ad69b3c37cc8c932e0d22e1db0d7ee9bcc20e61a75bff77d43df587da00a4d0bf9f2b6769754cecd46
SSDEEP 3072:QoiD6UJRpHOrBbsfxm/MxlQq1IcB9nXg88LIHfj68agvkvhBkPhIe/yL6uu:EDJTOrBQgMNIcBBQ1I/jogvEZI
MD5 SHA1 SHA512 SSDEEP

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hrcxl.dll

Path \??\c:\Program Files\qzvbn\hrcxl.dll
Size 138KB
SHA256 c6071096703ed5eb3a2a1def09fee0cf0389583f66f56f1dbe360acf645b97f8
MD5 4aca14bb7eb940970abb83c6fd8f7285
SHA1 1e09aef619a71cd492d25171b60e811a309bd9ae
SHA512 569c2d74c757d6740b1e4627acef5135ee1ace44da2b933e3fe610f2668a9b63b3c990a8235cdb66655fb8c1a97d679a4063a2f119cbf5112815e60e0fc8446f
SSDEEP 3072:diDr4JzSBHF85YTk8IJ84cOWL7CazDypXuPY:cXmSBl8Q3TL7Cazq
MD5 SHA1 SHA512 SSDEEP

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memory/2708-1-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/2708-5-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/2708-2-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/2708-0-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/3184-16-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/3184-18-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/3184-19-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/3184-17-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/3184-20-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/3184-22-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/3184-24-0x0000000010000000-0x0000000010085000-memory.dmp

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memory/4480-10-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/4480-13-0x0000000000400000-0x000000000044401F-memory.dmp

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memory/4480-9-0x0000000000400000-0x000000000044401F-memory.dmp

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