saintbot | b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42

General

Target

b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe
Size

269KB
MD5

e640bdb76d7b30cb9ca9250d5b6631e3
SHA1

0540792efa9eb7ecdcfce3340dc0be1204c1e8c8
SHA256

b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42
SHA512

0d9bbc8f82a212cbb92595f2d5e7e4e1bab00061286f04441dce4c383827e3d55a60afee4e1d52b2af4ded201c5c54c046a4065ca055cfa1448b807a4a4a2034

Score

10^/10

saintbot discovery dropper persistence suricata

Malware Config

Signatures

SaintBot
Saint Bot is a malware dropper being used to deliver secondary payloads such as information stealers.
dropper saintbot

SaintBot Payload 3 IoCs

resource	yara_rule
behavioral1/memory/972-58-0x0000000000030000-0x0000000000039000-memory.dmp	family_saintbot
behavioral1/memory/972-59-0x0000000000400000-0x000000000040C000-memory.dmp	family_saintbot
behavioral1/memory/2016-71-0x0000000000080000-0x000000000008C000-memory.dmp	family_saintbot

suricata: ET MALWARE Trojan Generic - POST To gate.php with no referer
suricata: ET MALWARE Trojan Generic - POST To gate.php with no referer
suricata

Executes dropped EXE 1 IoCs

pid	Process
476	Microsoft Office Shared MUI (English) 2010.exe

Deletes itself 1 IoCs

pid	Process
772	cmd.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Office Shared MUI (English) 2010.exe	Microsoft Office Shared MUI (English) 2010.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Office Shared MUI (English) 2010.exe	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe

Loads dropped DLL 4 IoCs

pid	Process
972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe
972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe
476	Microsoft Office Shared MUI (English) 2010.exe
2016	EhStorAuthn.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Local\\z_Admin\\Admin.vbs"	EhStorAuthn.exe

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

Maps connected drives based on registry 3 TTPs 6 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum	Microsoft Office Shared MUI (English) 2010.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Microsoft Office Shared MUI (English) 2010.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum	EhStorAuthn.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	EhStorAuthn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\EhStorAuthn.exe	EhStorAuthn.exe

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 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	EhStorAuthn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EhStorAuthn.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
1964	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1036	PING.EXE

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 476	972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	27
PID 972 wrote to memory of 476	972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	27
PID 972 wrote to memory of 476	972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	27
PID 972 wrote to memory of 476	972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	27
PID 972 wrote to memory of 772	972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	28
PID 972 wrote to memory of 772	972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	28
PID 972 wrote to memory of 772	972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	28
PID 972 wrote to memory of 772	972	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	28
PID 772 wrote to memory of 1036	772	cmd.exe	30
PID 772 wrote to memory of 1036	772	cmd.exe	30
PID 772 wrote to memory of 1036	772	cmd.exe	30
PID 772 wrote to memory of 1036	772	cmd.exe	30
PID 772 wrote to memory of 1076	772	cmd.exe	31
PID 772 wrote to memory of 1076	772	cmd.exe	31
PID 772 wrote to memory of 1076	772	cmd.exe	31
PID 772 wrote to memory of 1076	772	cmd.exe	31
PID 476 wrote to memory of 2016	476	Microsoft Office Shared MUI (English) 2010.exe	32
PID 476 wrote to memory of 2016	476	Microsoft Office Shared MUI (English) 2010.exe	32
PID 476 wrote to memory of 2016	476	Microsoft Office Shared MUI (English) 2010.exe	32
PID 476 wrote to memory of 2016	476	Microsoft Office Shared MUI (English) 2010.exe	32
PID 476 wrote to memory of 2016	476	Microsoft Office Shared MUI (English) 2010.exe	32
PID 2016 wrote to memory of 1964	2016	EhStorAuthn.exe	33
PID 2016 wrote to memory of 1964	2016	EhStorAuthn.exe	33
PID 2016 wrote to memory of 1964	2016	EhStorAuthn.exe	33
PID 2016 wrote to memory of 1964	2016	EhStorAuthn.exe	33

C:\Users\Admin\AppData\Local\Temp\b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe
"C:\Users\Admin\AppData\Local\Temp\b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Maps connected drives based on registry
- Suspicious use of WriteProcessMemory
PID:972
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Office Shared MUI (English) 2010.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Office Shared MUI (English) 2010.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Loads dropped DLL
  - Maps connected drives based on registry
  - Suspicious use of WriteProcessMemory
  PID:476
- - C:\Windows\SysWOW64\EhStorAuthn.exe
    "C:\Windows\System32\EhStorAuthn.exe"
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Maps connected drives based on registry
    - Drops file in System32 directory
    - Checks processor information in registry
    - Suspicious use of WriteProcessMemory
    PID:2016
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 5 /tn "Maintenance" /tr "C:\Users\%USERNAME%\AppData\Local\z_%USERNAME%\%USERNAME%.vbs" /F
      4⤵
      Creates scheduled task(s)
      PID:1964
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Roaming\del.bat
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:772
- - C:\Windows\SysWOW64\PING.EXE
    ping localhost -n 3
    3⤵
    - Runs ping.exe
    PID:1036
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del "C:\Users\Admin\AppData\Roaming\del.bat"
    3⤵
    PID:1076

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/476-64-0x00000000018FA000-0x0000000001900000-memory.dmp

Filesize
24KB

Download
memory/476-66-0x00000000018FA000-0x0000000001900000-memory.dmp

Filesize
24KB

Download
memory/972-59-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/972-58-0x0000000000030000-0x0000000000039000-memory.dmp

Filesize
36KB

Download
memory/972-57-0x00000000018DA000-0x00000000018E0000-memory.dmp

Filesize
24KB

Download
memory/972-55-0x00000000018DA000-0x00000000018E0000-memory.dmp

Filesize
24KB

Download
memory/972-56-0x0000000076071000-0x0000000076073000-memory.dmp

Filesize
8KB

Download
memory/2016-71-0x0000000000080000-0x000000000008C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads