azorult | 4a4a4c441355bbf90def9ab2aec89335f93237487e670df04b3d63c65b5be25a

Analysis

max time kernel
122s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220310-en
submitted
14/04/2022, 10:37

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General

Target
gunzipped.exe
Size 270KB
Sample220414-mntmasbac8
SHA256 4a4a4c441355bbf90def9ab2aec89335f93237487e670df04b3d63c65b5be25a
MD5 4332f0c0baa163ca13506e81b24b25ea
SHA1 f43d4def1288ee50719aad128ee5cdc8b60c256e
SHA512 271de625607fb85050d8837cc907ae40735c9dfd0fa266f8eb6252ab3f04c7b9c4b16d39e79b098eda975bba9c362a07439c27b930f750640f4615d290059f12
MD5 SHA1 SHA512

Score

10^/10

azorult collection discovery infostealer spyware stealer trojan

Malware Config

Extracted

Family

azorult

http://136.144.41.124/razor/index.php

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Control Panel\International\Geo\Nation	gunzipped.exe

Loads dropped DLL 4 IoCs

pid	Process
1392	gunzipped.exe
1392	gunzipped.exe
1392	gunzipped.exe
1392	gunzipped.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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	gunzipped.exe
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	gunzipped.exe
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	gunzipped.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5020	1392	WerFault.exe	81
3972	1392	WerFault.exe	81

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4212	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1392	gunzipped.exe
1392	gunzipped.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1392 wrote to memory of 2120	1392	gunzipped.exe	84
PID 1392 wrote to memory of 2120	1392	gunzipped.exe	84
PID 1392 wrote to memory of 2120	1392	gunzipped.exe	84
PID 2120 wrote to memory of 4212	2120	cmd.exe	87
PID 2120 wrote to memory of 4212	2120	cmd.exe	87
PID 2120 wrote to memory of 4212	2120	cmd.exe	87

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	gunzipped.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	gunzipped.exe

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c C:\Windows\system32\timeout.exe 3 & del "gunzipped.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2120
- - C:\Windows\SysWOW64\timeout.exe
    C:\Windows\system32\timeout.exe 3
    3⤵
    - Delays execution with timeout.exe
    PID:4212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1392 -s 1928
  2⤵
  - Program crash
  PID:5020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1392 -s 1908
  2⤵
  - Program crash
  PID:3972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1392 -ip 1392
1⤵
PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1392 -ip 1392
1⤵
PID:1836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

mozglue.dll

Path C:\Users\Admin\AppData\Local\Temp\B7A42151\mozglue.dll
Size 135KB
SHA256 830533bb569594ec2f7c07896b90225006b90a9af108f49d6fb6bebd02428b2d
MD5 9e682f1eb98a9d41468fc3e50f907635
SHA1 85e0ceca36f657ddf6547aa0744f0855a27527ee
SHA512 230230722d61ac1089fabf3f2decfa04f9296498f8e2a2a49b1527797dca67b5a11ab8656f04087acadf873fa8976400d57c77c404eba4aff89d92b9986f32ed
SSDEEP 3072:8Oqe98Ea4usvd5jm6V0InXx/CHzGYC6NccMmxK3atIYHD2JJJsPyimY4kQkE:Vqe98Evua5Sm0ux/5YC6NccMmtXHD2JR
MD5 SHA1 SHA512 SSDEEP

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msvcp140.dll

Path C:\Users\Admin\AppData\Local\Temp\B7A42151\msvcp140.dll
Size 429KB
SHA256 334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4
MD5 109f0f02fd37c84bfc7508d4227d7ed5
SHA1 ef7420141bb15ac334d3964082361a460bfdb975
SHA512 46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39
SSDEEP 12288:Mlp4PwrPTlZ+/wKzY+dM+gjZ+UGhUgiW6QR7t5s03Ooc8dHkC2es9oV:Mlp4PePozGMA03Ooc8dHkC2ecI
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\Users\Admin\AppData\Local\Temp\B7A42151\nss3.dll
Size 1.2MB
SHA256 f0e6210d4a0d48c7908d8d1c270449c91eb4523e312a61256833bfeaf699abfb
MD5 556ea09421a0f74d31c4c0a89a70dc23
SHA1 f739ba9b548ee64b13eb434a3130406d23f836e3
SHA512 2481fc80dffa8922569552c3c3ebaef8d0341b80427447a14b291ec39ea62ab9c05a75e85eef5ea7f857488cab1463c18586f9b076e2958c5a314e459045ede2
SSDEEP 24576:XDI7I4/FeoJQuQ3IhXtHfjyqgJ0BnPQAib7/12bg2JSna5xfg0867U4MSpu731hn:uQ3YX5jyqgynPkbd24VwMSpu7Fhn
MD5 SHA1 SHA512 SSDEEP

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vcruntime140.dll

Path C:\Users\Admin\AppData\Local\Temp\B7A42151\vcruntime140.dll
Size 81KB
SHA256 c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d
MD5 7587bf9cb4147022cd5681b015183046
SHA1 f2106306a8f6f0da5afb7fc765cfa0757ad5a628
SHA512 0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f
SSDEEP 1536:AQXQNgAuCDeHFtg3uYQkDqiVsv39niI35kU2yecbVKHHwhbfugbZyk:AQXQNVDeHFtO5d/A39ie6yecbVKHHwJF
MD5 SHA1 SHA512 SSDEEP

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memory/1392-134-0x00000000004A3000-0x00000000004B4000-memory.dmp

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memory/1392-135-0x00000000004A3000-0x00000000004B4000-memory.dmp

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memory/1392-136-0x0000000000470000-0x000000000048D000-memory.dmp

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memory/1392-137-0x0000000000400000-0x000000000046B000-memory.dmp

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