azorult | fe117521cd5f1653cebc4d6a3bfd85dfd273e4df7d8e0204205779a951e421bc

General

Target
Dekont.pdf.exe
Size 410KB
Sample210107-kv3xcynav2
SHA256 fe117521cd5f1653cebc4d6a3bfd85dfd273e4df7d8e0204205779a951e421bc
MD5 0127bfef7d4408d3384e5792da7384d0
SHA1 261532f47c7467e35b1b6d405c1a0748182f768f
SHA512 74a09f8a1712ef8b04b2d0664152f163a1e1a819f7ba2670d61d21646ce17e3e297a5f54cc24f6a98d768f1a5ec526877264278e6356cde11fc324102a2d317d
MD5 SHA1 SHA512

Score

10^/10

azorult discovery infostealer persistence spyware trojan

Malware Config

Extracted

Family

azorult

C2

http://blkgrupdoom.info/scgn/index.php

Signatures

Azorult
An information stealer that was first discovered in 2016, targeting browsing history and passwords.
trojan infostealer azorult

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\Desktop\\yes.exe,"	reg.exe

Executes dropped EXE 2 IoCs

pid	Process
3012	yes.exe
2636	AddInProcess32.exe

Loads dropped DLL 4 IoCs

pid	Process
2636	AddInProcess32.exe
2636	AddInProcess32.exe
2636	AddInProcess32.exe
2636	AddInProcess32.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

JavaScript code in executable 1 IoCs

resource	yara_rule
behavioral2/files/0x000100000001ab6a-27.dat	js

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3012 set thread context of 2636	3012	yes.exe	83

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	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	AddInProcess32.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4040	timeout.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
4052	Dekont.pdf.exe
3012	yes.exe
3012	yes.exe
2636	AddInProcess32.exe
2636	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	Dekont.pdf.exe
Token: SeDebugPrivilege	3012	yes.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 2456	4052	Dekont.pdf.exe	75
PID 4052 wrote to memory of 2456	4052	Dekont.pdf.exe	75
PID 4052 wrote to memory of 2456	4052	Dekont.pdf.exe	75
PID 2456 wrote to memory of 3772	2456	cmd.exe	77
PID 2456 wrote to memory of 3772	2456	cmd.exe	77
PID 2456 wrote to memory of 3772	2456	cmd.exe	77
PID 4052 wrote to memory of 3012	4052	Dekont.pdf.exe	82
PID 4052 wrote to memory of 3012	4052	Dekont.pdf.exe	82
PID 4052 wrote to memory of 3012	4052	Dekont.pdf.exe	82
PID 3012 wrote to memory of 2636	3012	yes.exe	83
PID 3012 wrote to memory of 2636	3012	yes.exe	83
PID 3012 wrote to memory of 2636	3012	yes.exe	83
PID 3012 wrote to memory of 2636	3012	yes.exe	83
PID 3012 wrote to memory of 2636	3012	yes.exe	83
PID 3012 wrote to memory of 2636	3012	yes.exe	83
PID 3012 wrote to memory of 2636	3012	yes.exe	83
PID 3012 wrote to memory of 2636	3012	yes.exe	83
PID 3012 wrote to memory of 2636	3012	yes.exe	83
PID 2636 wrote to memory of 1896	2636	AddInProcess32.exe	84
PID 2636 wrote to memory of 1896	2636	AddInProcess32.exe	84
PID 2636 wrote to memory of 1896	2636	AddInProcess32.exe	84
PID 1896 wrote to memory of 4040	1896	cmd.exe	86
PID 1896 wrote to memory of 4040	1896	cmd.exe	86
PID 1896 wrote to memory of 4040	1896	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\Desktop\yes.exe,"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2456
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\Desktop\yes.exe,"
    3⤵
    - Modifies WinLogon for persistence
    PID:3772
- C:\Users\Admin\Desktop\yes.exe
  "C:\Users\Admin\Desktop\yes.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2636
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c C:\Windows\system32\timeout.exe 3 & del "AddInProcess32.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1896
    - - C:\Windows\SysWOW64\timeout.exe
        
        C:\Windows\system32\timeout.exe 3
        5⤵
        Delays execution with timeout.exe
        
        PID:4040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2636-26-0x0000000000400000-0x0000000000420000-memory.dmp

Download

memory/2636-23-0x0000000000400000-0x0000000000420000-memory.dmp

Download

memory/3012-14-0x0000000073820000-0x0000000073F0E000-memory.dmp

Download

memory/3012-21-0x0000000004E00000-0x0000000004E0B000-memory.dmp

Download

memory/3012-22-0x0000000004E20000-0x0000000004E21000-memory.dmp

Download

memory/4052-2-0x0000000073820000-0x0000000073F0E000-memory.dmp

Download

memory/4052-8-0x00000000072D0000-0x00000000072D1000-memory.dmp

Download

memory/4052-7-0x0000000002500000-0x0000000002501000-memory.dmp

Download

memory/4052-6-0x0000000002390000-0x00000000023AE000-memory.dmp

Download

memory/4052-5-0x0000000004980000-0x0000000004981000-memory.dmp

Download

memory/4052-3-0x0000000000070000-0x0000000000071000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads