saintbot | ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03

General

Target

ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe
Size

235KB
MD5

247951ff7b519fa8d39ef07d33e0ba5b
SHA1

cf4587b6015d2a00c26a369339504595a266401f
SHA256

ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03
SHA512

6185aeae2dbb154ba4fef27eb7dc71a1e6a8ba7e1ca69cbbe5aeb9588b29d95608e32e9f46f8d60183584903f3bbffbd5a603f5717a84f18ad81bb5088ee7bd7

Score

10^/10

saintbot discovery dropper persistence

Malware Config

Signatures

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

SaintBot Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1620-57-0x0000000000220000-0x0000000000229000-memory.dmp	family_saintbot
behavioral1/memory/1620-59-0x0000000000400000-0x000000000040B000-memory.dmp	family_saintbot
behavioral1/memory/648-66-0x00000000001B0000-0x00000000001B9000-memory.dmp	family_saintbot
behavioral1/memory/452-72-0x0000000000080000-0x000000000008B000-memory.dmp	family_saintbot

Executes dropped EXE 1 IoCs

pid	Process
648	45013.exe

Deletes itself 1 IoCs

pid	Process
1276	cmd.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\45013.exe	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\45013.exe	45013.exe

Loads dropped DLL 4 IoCs

pid	Process
1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe
1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe
648	45013.exe
452	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	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum	45013.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	45013.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

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
872	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1072	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
648	45013.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 648	1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe	27
PID 1620 wrote to memory of 648	1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe	27
PID 1620 wrote to memory of 648	1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe	27
PID 1620 wrote to memory of 648	1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe	27
PID 1620 wrote to memory of 1276	1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe	28
PID 1620 wrote to memory of 1276	1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe	28
PID 1620 wrote to memory of 1276	1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe	28
PID 1620 wrote to memory of 1276	1620	ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe	28
PID 1276 wrote to memory of 1072	1276	cmd.exe	30
PID 1276 wrote to memory of 1072	1276	cmd.exe	30
PID 1276 wrote to memory of 1072	1276	cmd.exe	30
PID 1276 wrote to memory of 1072	1276	cmd.exe	30
PID 1276 wrote to memory of 892	1276	cmd.exe	31
PID 1276 wrote to memory of 892	1276	cmd.exe	31
PID 1276 wrote to memory of 892	1276	cmd.exe	31
PID 1276 wrote to memory of 892	1276	cmd.exe	31
PID 648 wrote to memory of 452	648	45013.exe	32
PID 648 wrote to memory of 452	648	45013.exe	32
PID 648 wrote to memory of 452	648	45013.exe	32
PID 648 wrote to memory of 452	648	45013.exe	32
PID 648 wrote to memory of 452	648	45013.exe	32
PID 452 wrote to memory of 872	452	EhStorAuthn.exe	33
PID 452 wrote to memory of 872	452	EhStorAuthn.exe	33
PID 452 wrote to memory of 872	452	EhStorAuthn.exe	33
PID 452 wrote to memory of 872	452	EhStorAuthn.exe	33

C:\Users\Admin\AppData\Local\Temp\ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe
"C:\Users\Admin\AppData\Local\Temp\ec3c0afccfef11f753a408c859d98bbba4841e87f7f1a48573270c0d82252b03.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Maps connected drives based on registry
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\45013.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\45013.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Loads dropped DLL
  - Maps connected drives based on registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:648
- - 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:452
  - - 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:872
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Roaming\del.bat
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1276
- - C:\Windows\SysWOW64\PING.EXE
    ping localhost -n 3
    3⤵
    - Runs ping.exe
    PID:1072
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del "C:\Users\Admin\AppData\Roaming\del.bat"
    3⤵
    PID:892

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/452-72-0x0000000000080000-0x000000000008B000-memory.dmp

Filesize
44KB

Download
memory/648-63-0x00000000002EB000-0x00000000002F2000-memory.dmp

Filesize
28KB

Download
memory/648-65-0x00000000002EB000-0x00000000002F2000-memory.dmp

Filesize
28KB

Download
memory/648-66-0x00000000001B0000-0x00000000001B9000-memory.dmp

Filesize
36KB

Download
memory/1620-55-0x0000000000B9B000-0x0000000000BA2000-memory.dmp

Filesize
28KB

Download
memory/1620-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1620-58-0x0000000076641000-0x0000000076643000-memory.dmp

Filesize
8KB

Download
memory/1620-57-0x0000000000220000-0x0000000000229000-memory.dmp

Filesize
36KB

Download
memory/1620-56-0x0000000000B9B000-0x0000000000BA2000-memory.dmp

Filesize
28KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads