azorult | b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3

Analysis

max time kernel
135s
max time network
151s
platform
windows7_x64
resource
win7v200430
submitted
10/07/2020, 10:21

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General

Target
62231fa0b731bd0aac1c55bd8ed15898.exe
Size 242KB
Sample200710-mbeh8c7r5a
SHA256 b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3
MD5 62231fa0b731bd0aac1c55bd8ed15898
SHA1 d3dd155f601bb80e417b9b0a6cf294215107af46
SHA512 6539e010a88784c5c6c605038b2edb38c06d060543140e08c405025fd4c825f281e78993309a82dabb26148d5ad5eaf5eb0ea87f9fe95a520cd59d9c508c683c
MD5 SHA1 SHA512

Score

10^/10

azorult oski discovery evasion infostealer spyware stealer trojan

Malware Config

Extracted

Family

azorult

http://195.245.112.115/index.php

Extracted

Family

oski

raymond.ug

Signatures

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

Contains code to disable Windows Defender 8 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral1/memory/1872-122-0x0000000000400000-0x0000000000408000-memory.dmp	disable_win_def
behavioral1/memory/1872-123-0x0000000000403BEE-mapping.dmp	disable_win_def
behavioral1/memory/1872-125-0x0000000000400000-0x0000000000408000-memory.dmp	disable_win_def
behavioral1/memory/1872-126-0x0000000000400000-0x0000000000408000-memory.dmp	disable_win_def
behavioral1/memory/1604-132-0x0000000000400000-0x000000000040C000-memory.dmp	disable_win_def
behavioral1/memory/1604-134-0x000000000040616E-mapping.dmp	disable_win_def
behavioral1/memory/1604-137-0x0000000000400000-0x000000000040C000-memory.dmp	disable_win_def
behavioral1/memory/1604-139-0x0000000000400000-0x000000000040C000-memory.dmp	disable_win_def

Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089
Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Downloads MZ/PE file

Executes dropped EXE 8 IoCs

pid	Process
1876	osaz.exe
1928	rc.exe
1932	ac.exe
1996	ds1.exe
1428	ds2.exe
1568	osaz.exe
1872	ds2.exe
1604	ds1.exe

Deletes itself 1 IoCs

pid	Process
1488	cmd.exe

Loads dropped DLL 30 IoCs

pid	Process
1032	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1768	62231fa0b731bd0aac1c55bd8ed15898.exe
1876	osaz.exe
1428	ds2.exe
1996	ds1.exe
1568	osaz.exe
1568	osaz.exe
1568	osaz.exe
1568	osaz.exe
1568	osaz.exe

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

Data from Local System
T1005

Credentials in Files
T1081
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

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 stealer

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 stealer

Data from Local System
T1005

Credentials in Files
T1081

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	ds2.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	ds2.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1032 set thread context of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1876 set thread context of 1568	1876	osaz.exe	39
PID 1428 set thread context of 1872	1428	ds2.exe	41
PID 1996 set thread context of 1604	1996	ds1.exe	42

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 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	62231fa0b731bd0aac1c55bd8ed15898.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	62231fa0b731bd0aac1c55bd8ed15898.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	osaz.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1560	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
792	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1768	62231fa0b731bd0aac1c55bd8ed15898.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1032 wrote to memory of 1876	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	26
PID 1032 wrote to memory of 1876	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	26
PID 1032 wrote to memory of 1876	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	26
PID 1032 wrote to memory of 1876	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	26
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1032 wrote to memory of 1768	1032	62231fa0b731bd0aac1c55bd8ed15898.exe	27
PID 1768 wrote to memory of 1928	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	30
PID 1768 wrote to memory of 1928	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	30
PID 1768 wrote to memory of 1928	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	30
PID 1768 wrote to memory of 1928	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	30
PID 1768 wrote to memory of 1932	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	31
PID 1768 wrote to memory of 1932	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	31
PID 1768 wrote to memory of 1932	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	31
PID 1768 wrote to memory of 1932	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	31
PID 1768 wrote to memory of 1996	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	32
PID 1768 wrote to memory of 1996	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	32
PID 1768 wrote to memory of 1996	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	32
PID 1768 wrote to memory of 1996	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	32
PID 1768 wrote to memory of 1428	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	33
PID 1768 wrote to memory of 1428	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	33
PID 1768 wrote to memory of 1428	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	33
PID 1768 wrote to memory of 1428	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	33
PID 1768 wrote to memory of 1488	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	34
PID 1768 wrote to memory of 1488	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	34
PID 1768 wrote to memory of 1488	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	34
PID 1768 wrote to memory of 1488	1768	62231fa0b731bd0aac1c55bd8ed15898.exe	34
PID 1488 wrote to memory of 792	1488	cmd.exe	36
PID 1488 wrote to memory of 792	1488	cmd.exe	36
PID 1488 wrote to memory of 792	1488	cmd.exe	36
PID 1488 wrote to memory of 792	1488	cmd.exe	36
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37
PID 1928 wrote to memory of 1180	1928	rc.exe	37

C:\Users\Admin\AppData\Local\Temp\62231fa0b731bd0aac1c55bd8ed15898.exe
"C:\Users\Admin\AppData\Local\Temp\62231fa0b731bd0aac1c55bd8ed15898.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Users\Admin\AppData\Local\Temp\osaz.exe
  "C:\Users\Admin\AppData\Local\Temp\osaz.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  PID:1876
- - C:\Users\Admin\AppData\Local\Temp\osaz.exe
    "{path}"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    PID:1568
- C:\Users\Admin\AppData\Local\Temp\62231fa0b731bd0aac1c55bd8ed15898.exe
  "{path}"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1768
- - C:\Users\Admin\AppData\Local\Temp\rc.exe
    "C:\Users\Admin\AppData\Local\Temp\rc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1928
  - - C:\Windows\SysWOW64\TapiUnattend.exe
      "C:\Windows\System32\TapiUnattend.exe"
      4⤵
      PID:1180
- - C:\Users\Admin\AppData\Local\Temp\ac.exe
    "C:\Users\Admin\AppData\Local\Temp\ac.exe"
    3⤵
    - Executes dropped EXE
    PID:1932
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xtkoqNVcW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp60B5.tmp"
      4⤵
      Creates scheduled task(s)
      PID:1560
- - C:\Users\Admin\AppData\Local\Temp\ds1.exe
    "C:\Users\Admin\AppData\Local\Temp\ds1.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    PID:1996
  - - C:\Users\Admin\AppData\Local\Temp\ds1.exe
      "{path}"
      4⤵
      Executes dropped EXE
      PID:1604
- - C:\Users\Admin\AppData\Local\Temp\ds2.exe
    "C:\Users\Admin\AppData\Local\Temp\ds2.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    PID:1428
  - - C:\Users\Admin\AppData\Local\Temp\ds2.exe
      "{path}"
      4⤵
      Executes dropped EXE
      Windows security modification
      PID:1872
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" Get-MpPreference -verbose
        5⤵
        
        PID:416
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c C:\Windows\system32\timeout.exe 3 & del "62231fa0b731bd0aac1c55bd8ed15898.exe"
    3⤵
    - Deletes itself
    - Suspicious use of WriteProcessMemory
    PID:1488
  - - C:\Windows\SysWOW64\timeout.exe
      C:\Windows\system32\timeout.exe 3
      4⤵
      Delays execution with timeout.exe
      PID:792

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Modify Existing Service

T1031

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Web Service

T1102

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1568-65-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1568-61-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1604-137-0x0000000000400000-0x000000000040C000-memory.dmp

Download

memory/1604-139-0x0000000000400000-0x000000000040C000-memory.dmp

Download

memory/1604-132-0x0000000000400000-0x000000000040C000-memory.dmp

Download

memory/1768-8-0x0000000000400000-0x0000000000420000-memory.dmp

Download

memory/1768-11-0x0000000000400000-0x0000000000420000-memory.dmp

Download

memory/1872-126-0x0000000000400000-0x0000000000408000-memory.dmp

Download

memory/1872-122-0x0000000000400000-0x0000000000408000-memory.dmp

Download

memory/1872-125-0x0000000000400000-0x0000000000408000-memory.dmp

Download