61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85

General

Target

61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.exe
Size

379KB
MD5

ad6402bfff43e93d96afba85d04da3c9
SHA1

e537bd21dfd02cad9aa5fede144928c4d991cac3
SHA256

61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85
SHA512

ebad6190e3809f0af269ba1dcfb7c77392f4140a6787262293099202929e781dcf17da01b64ceb254822f3c034782dec1a2484084be0d6cf4f73fbf9d89a31c4
SSDEEP

6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19:UGmTau+mMC4ITJE8dfSJ/F1

Score

8^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 4 IoCs

flow	pid	Process
19	4320	rundll32.exe
30	4320	rundll32.exe
31	4320	rundll32.exe
50	4320	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3436	fxezj.exe

Executes dropped EXE 1 IoCs

pid	Process
3436	fxezj.exe

Loads dropped DLL 1 IoCs

pid	Process
4320	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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ldgydkadj\\naebntym.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)	\??\g:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\r:	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\ldgydkadj	fxezj.exe
File created	\??\c:\Program Files\ldgydkadj\naebntym.dll	fxezj.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	61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.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	fxezj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
4464	cmd.exe
3736	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
3736	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4320	rundll32.exe
4320	rundll32.exe
4320	rundll32.exe
4320	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4320	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2700	61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.exe
3436	fxezj.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 4464	2700	61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.exe	82
PID 2700 wrote to memory of 4464	2700	61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.exe	82
PID 2700 wrote to memory of 4464	2700	61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.exe	82
PID 4464 wrote to memory of 3736	4464	cmd.exe	84
PID 4464 wrote to memory of 3736	4464	cmd.exe	84
PID 4464 wrote to memory of 3736	4464	cmd.exe	84
PID 4464 wrote to memory of 3436	4464	cmd.exe	85
PID 4464 wrote to memory of 3436	4464	cmd.exe	85
PID 4464 wrote to memory of 3436	4464	cmd.exe	85
PID 3436 wrote to memory of 4320	3436	fxezj.exe	86
PID 3436 wrote to memory of 4320	3436	fxezj.exe	86
PID 3436 wrote to memory of 4320	3436	fxezj.exe	86

C:\Users\Admin\AppData\Local\Temp\61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.exe
"C:\Users\Admin\AppData\Local\Temp\61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\fxezj.exe "C:\Users\Admin\AppData\Local\Temp\61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4464
- - 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:3736
- - C:\Users\Admin\AppData\Local\Temp\fxezj.exe
    C:\Users\Admin\AppData\Local\Temp\\fxezj.exe "C:\Users\Admin\AppData\Local\Temp\61b1a769803a1ac827074190abfafa1c6d01968f6adc80f79ba824a50a476a85.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:3436
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\ldgydkadj\naebntym.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\fxezj.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:4320

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:\Users\Admin\AppData\Local\Temp\fxezj.exe

Filesize
379KB

MD5
767e79e39aacacbb82649af0ac0b1769

SHA1
2a831b9b1d4d6ad99f8dbc88b4f54b7175bee149

SHA256
193f31bba4173441d357b5b9979d313df04d24a42e00ea8edf04f99da1628c40

SHA512
a58162ea6a98eb398ea06632ddeffa1702e8adade52b5d38d6ad2c49aa1cc9a017687fb71f7398f59074acb3def544ddfb401684cfb5e671a4954aa28640f716

Download Submit
\??\c:\Program Files\ldgydkadj\naebntym.dll

Filesize
176KB

MD5
0f7fe2b34ccc1a2175e0af41b68fcc94

SHA1
76a67f8cb214c3dfc22871a14245c70bef880de0

SHA256
737867feb1238f0e6d36f35590eb8984548eb875517cfe1b947bebc2c65f32e5

SHA512
171e7ddcbbd580e39b661428f415dd49e28911a60b431f84c37c0ceb92b49e039ccd4cb04ecd739eb08f4d49cd1ccd86e4b01ee610e07a265ccc6a419942de42

Download Submit
memory/2700-0-0x0000000000400000-0x0000000000492000-memory.dmp

Filesize
584KB

Download
memory/2700-2-0x0000000000400000-0x0000000000492000-memory.dmp

Filesize
584KB

Download
memory/3436-7-0x0000000000400000-0x0000000000492000-memory.dmp

Filesize
584KB

Download
memory/4320-10-0x0000000010000000-0x0000000010067000-memory.dmp

Filesize
412KB

Download
memory/4320-11-0x000000001005A000-0x000000001005B000-memory.dmp

Filesize
4KB

Download
memory/4320-12-0x0000000010000000-0x0000000010067000-memory.dmp

Filesize
412KB

Download
memory/4320-14-0x0000000010000000-0x0000000010067000-memory.dmp

Filesize
412KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads