654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af

General

Target

654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.exe
Size

200KB
MD5

fd57199e11b6177f1ec6bc90d6539ba3
SHA1

070e58dd95d5a9b9fc9be0028660facb44059fc7
SHA256

654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af
SHA512

a70e0966e265df118c02febbb1908672ab2cf91003116cf880aca2dafcc7ae429e50a06ecea7148049b0014987044aecae30961f8f6a2dad300e610fc3e7befb
SSDEEP

3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTq:X2vnSwjaOcADw9cUeCOf8

Score

7^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1196	enujxl.exe

Executes dropped EXE 2 IoCs

pid	Process
1196	enujxl.exe
4988	vvwsj.exe

Loads dropped DLL 1 IoCs

pid	Process
4988	vvwsj.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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\zylkzb\\vvwsj.exe \"c:\\Program Files\\zylkzb\\vvwsj.dll\",Compliance"	vvwsj.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)	\??\h:	vvwsj.exe
File opened (read-only)	\??\n:	vvwsj.exe
File opened (read-only)	\??\o:	vvwsj.exe
File opened (read-only)	\??\r:	vvwsj.exe
File opened (read-only)	\??\x:	vvwsj.exe
File opened (read-only)	\??\e:	vvwsj.exe
File opened (read-only)	\??\j:	vvwsj.exe
File opened (read-only)	\??\s:	vvwsj.exe
File opened (read-only)	\??\u:	vvwsj.exe
File opened (read-only)	\??\v:	vvwsj.exe
File opened (read-only)	\??\w:	vvwsj.exe
File opened (read-only)	\??\g:	vvwsj.exe
File opened (read-only)	\??\m:	vvwsj.exe
File opened (read-only)	\??\p:	vvwsj.exe
File opened (read-only)	\??\t:	vvwsj.exe
File opened (read-only)	\??\y:	vvwsj.exe
File opened (read-only)	\??\z:	vvwsj.exe
File opened (read-only)	\??\a:	vvwsj.exe
File opened (read-only)	\??\b:	vvwsj.exe
File opened (read-only)	\??\i:	vvwsj.exe
File opened (read-only)	\??\k:	vvwsj.exe
File opened (read-only)	\??\l:	vvwsj.exe
File opened (read-only)	\??\q:	vvwsj.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	vvwsj.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\zylkzb	enujxl.exe
File created	\??\c:\Program Files\zylkzb\vvwsj.dll	enujxl.exe
File created	\??\c:\Program Files\zylkzb\vvwsj.exe	enujxl.exe
File opened for modification	\??\c:\Program Files\zylkzb\vvwsj.exe	enujxl.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	654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.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	enujxl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vvwsj.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
4312	cmd.exe
788	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	vvwsj.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vvwsj.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
788	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4988	vvwsj.exe
4988	vvwsj.exe
4988	vvwsj.exe
4988	vvwsj.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4988	vvwsj.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1820	654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.exe
1196	enujxl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 4312	1820	654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.exe	85
PID 1820 wrote to memory of 4312	1820	654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.exe	85
PID 1820 wrote to memory of 4312	1820	654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.exe	85
PID 4312 wrote to memory of 788	4312	cmd.exe	87
PID 4312 wrote to memory of 788	4312	cmd.exe	87
PID 4312 wrote to memory of 788	4312	cmd.exe	87
PID 4312 wrote to memory of 1196	4312	cmd.exe	89
PID 4312 wrote to memory of 1196	4312	cmd.exe	89
PID 4312 wrote to memory of 1196	4312	cmd.exe	89
PID 1196 wrote to memory of 4988	1196	enujxl.exe	90
PID 1196 wrote to memory of 4988	1196	enujxl.exe	90
PID 1196 wrote to memory of 4988	1196	enujxl.exe	90

C:\Users\Admin\AppData\Local\Temp\654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.exe
"C:\Users\Admin\AppData\Local\Temp\654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\enujxl.exe "C:\Users\Admin\AppData\Local\Temp\654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4312
- - 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:788
- - C:\Users\Admin\AppData\Local\Temp\enujxl.exe
    C:\Users\Admin\AppData\Local\Temp\\enujxl.exe "C:\Users\Admin\AppData\Local\Temp\654dcb4f04e35d08163c591036679848506f335a4c78c94781eb1f3f6c9056af.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:1196
  - - \??\c:\Program Files\zylkzb\vvwsj.exe
      "c:\Program Files\zylkzb\vvwsj.exe" "c:\Program Files\zylkzb\vvwsj.dll",Compliance C:\Users\Admin\AppData\Local\Temp\enujxl.exe
      4⤵
      Executes dropped EXE
      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:4988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\zylkzb\vvwsj.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
C:\Users\Admin\AppData\Local\Temp\enujxl.exe

Filesize
200KB

MD5
f098e468b5296abcac2e0bb8d3174c8c

SHA1
2c299cb34fd0a856f2db56a7b16c0a2209a95720

SHA256
49ff5a024b5b7f1b9ab3bf71ae8ecf297b174c18e1ea69f59afa9f1400a5b864

SHA512
d8177e147f5ea6dbff8f171339e05ee70e44da8a530c1d9b577130633f47867e973a990f411b7e4f8edcb24394fa0a871b06cc4a87248b5a24453a1574d9c5c4

Download Submit
\??\c:\Program Files\zylkzb\vvwsj.dll

Filesize
141KB

MD5
7de29e50eab73f7f174a6e3236946d91

SHA1
8b124b9c7a98f2f1dfa72dd3d253e8ae8c534a7f

SHA256
009d1620f9d08af0a954f38b68b91b574a48eb6135b14dff581538ad4f97c643

SHA512
d11f02f50bf7c96d9cee304cb00577a472c8d8e8a2539d2b7e3ba937c63080bdf6f22d95bb50c6ad0b39350aac9074ec06e668e5896d78dad8cca9d4c05ec8e5

Download Submit
memory/1196-9-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1196-8-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1196-15-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1820-4-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1820-0-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1820-1-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1820-2-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4988-19-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4988-21-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4988-24-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads