ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2

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
07/11/2024, 03:39

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General

Target
ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe
Size 97KB
Sample241107-d7xcvsxken
SHA256 ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2
MD5 c07eef9fde71bbb466ecbbfac62037c0
SHA1 8bec36c93fbd634597cbbe12a925ae882943e5a7
SHA512 4fb58a82b82e8ee9d73b007d42def400d72bb94ee0173012e4d4395240d55c940ad47825e970bdb1f76e3012344d955f73a3a6b9a3107fea70178584931f2356
SSDEEP 3072:tSABNx6vb4RoI4mwRxO0tA6vGsa6cPIVK:tl6xRxltAT/gV
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	756	rundll32.exe
20	756	rundll32.exe
21	756	rundll32.exe
22	756	rundll32.exe
36	756	rundll32.exe
37	756	rundll32.exe
40	756	rundll32.exe
45	756	rundll32.exe

Deletes itself 1 IoCs

pid	Process
708	vkzmqjih.exe

Executes dropped EXE 1 IoCs

pid	Process
708	vkzmqjih.exe

Loads dropped DLL 1 IoCs

pid	Process
756	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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\otcvl\\xqepa.dll\",DoVirusScan"	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)	\??\a:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	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

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	vkzmqjih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
840	PING.EXE
2720	cmd.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
840	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe
756	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	756	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1440	ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe
708	vkzmqjih.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1440 wrote to memory of 2720	1440	ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe	85
PID 1440 wrote to memory of 2720	1440	ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe	85
PID 1440 wrote to memory of 2720	1440	ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe	85
PID 2720 wrote to memory of 840	2720	cmd.exe	87
PID 2720 wrote to memory of 840	2720	cmd.exe	87
PID 2720 wrote to memory of 840	2720	cmd.exe	87
PID 2720 wrote to memory of 708	2720	cmd.exe	89
PID 2720 wrote to memory of 708	2720	cmd.exe	89
PID 2720 wrote to memory of 708	2720	cmd.exe	89
PID 708 wrote to memory of 756	708	vkzmqjih.exe	91
PID 708 wrote to memory of 756	708	vkzmqjih.exe	91
PID 708 wrote to memory of 756	708	vkzmqjih.exe	91

C:\Users\Admin\AppData\Local\Temp\ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe
"C:\Users\Admin\AppData\Local\Temp\ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1440
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\vkzmqjih.exe "C:\Users\Admin\AppData\Local\Temp\ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2720
- - 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:840
- - \??\c:\vkzmqjih.exe
    c:\vkzmqjih.exe "C:\Users\Admin\AppData\Local\Temp\ab5ccae5e6e23c96401cf8989379edae2074616168abe590fa2fb5aad6868cc2N.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:708
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\otcvl\xqepa.dll",DoVirusScan c:\vkzmqjih.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:756

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

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Downloads

vkzmqjih.exe

Path C:\vkzmqjih.exe
Size 97KB
SHA256 2ca868b1911fe35759eb343e03d5d7b208a20da7b7fe61d3184a1004da5c3680
MD5 d7ebae355126d58909efa1cedf30cb79
SHA1 df2d26a093641042efa2ed80cae870798428b16d
SHA512 0d34d320ba8a59b21cabce102ae138209864980dd4f89ea2dddd3966450e83d04128fbab00794787c3e59c184d32c831545f07a278f6ad6da74f6f26260bdfb4
SSDEEP 3072:tSABNx6vb4RoI4mwRxO0tA6vGsa6cPIVKV:tl6xRxltAT/gV6
MD5 SHA1 SHA512 SSDEEP

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xqepa.dll

Path \??\c:\otcvl\xqepa.dll
Size 57KB
SHA256 3f60f5b141fed70c9db160df1b34aa28c62d9aae480029bee14fbe1f635e07e8
MD5 d44df003cd7b4ddc2b58f66d6af9894a
SHA1 165234b8432fa410af2e16a286fea52a664bcd46
SHA512 695266ae7c913291d060c9a7522283d9f113aa05f4105000ec5cd02fb0a102ec74aeee67ad5d660504c1d84c4d2b0eb36de1d551d1aa8bb3b8f06d4a5e509796
SSDEEP 1536:WBZjEdExl+6NDTJl6DNlCJLjvXCKa0K5YEPXm30Ox:a5Rg6paDLCRTXCP0KHde
MD5 SHA1 SHA512 SSDEEP

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memory/708-7-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/756-13-0x0000000010020000-0x0000000010030000-memory.dmp

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memory/756-10-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/756-14-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/756-11-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/756-15-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/756-18-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/756-19-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/756-20-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/756-21-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/1440-2-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/1440-0-0x0000000000400000-0x000000000041B000-memory.dmp

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