saintbot | b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42

General

Target

b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe
Size

269KB
MD5

e640bdb76d7b30cb9ca9250d5b6631e3
SHA1

0540792efa9eb7ecdcfce3340dc0be1204c1e8c8
SHA256

b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42
SHA512

0d9bbc8f82a212cbb92595f2d5e7e4e1bab00061286f04441dce4c383827e3d55a60afee4e1d52b2af4ded201c5c54c046a4065ca055cfa1448b807a4a4a2034
SSDEEP

3072:HWFdp+IajKk//6uu3icJ3QJiLK4DBOigIjbeirMnUMdE5R+l:2FdpH4KVd3bneIjbekMn9

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 9 IoCs

resource	yara_rule
behavioral1/memory/1548-2-0x0000000000020000-0x0000000000029000-memory.dmp	family_saintbot
behavioral1/memory/1548-3-0x0000000000400000-0x000000000177D000-memory.dmp	family_saintbot
behavioral1/memory/1548-24-0x0000000000020000-0x0000000000029000-memory.dmp	family_saintbot
behavioral1/memory/1548-23-0x0000000000400000-0x000000000177D000-memory.dmp	family_saintbot
behavioral1/memory/2548-28-0x0000000000400000-0x000000000177D000-memory.dmp	family_saintbot
behavioral1/memory/2548-32-0x0000000000400000-0x000000000177D000-memory.dmp	family_saintbot
behavioral1/memory/2436-34-0x0000000000080000-0x000000000008C000-memory.dmp	family_saintbot
behavioral1/memory/2436-36-0x0000000000080000-0x000000000008C000-memory.dmp	family_saintbot
behavioral1/memory/2436-37-0x0000000000080000-0x000000000008C000-memory.dmp	family_saintbot

Deletes itself 1 IoCs

pid	Process
2524	cmd.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\44656.exe	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\44656.exe	44656.exe

Executes dropped EXE 1 IoCs

pid	Process
2548	44656.exe

Loads dropped DLL 4 IoCs

pid	Process
1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe
1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe
2548	44656.exe
2436	EhStorAuthn.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum	44656.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	44656.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).

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/Job

T1053

pid	Process
2100	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2104	PING.EXE

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 2548	1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	28
PID 1548 wrote to memory of 2548	1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	28
PID 1548 wrote to memory of 2548	1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	28
PID 1548 wrote to memory of 2548	1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	28
PID 1548 wrote to memory of 2524	1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	29
PID 1548 wrote to memory of 2524	1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	29
PID 1548 wrote to memory of 2524	1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	29
PID 1548 wrote to memory of 2524	1548	b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42.exe	29
PID 2524 wrote to memory of 2104	2524	cmd.exe	31
PID 2524 wrote to memory of 2104	2524	cmd.exe	31
PID 2524 wrote to memory of 2104	2524	cmd.exe	31
PID 2524 wrote to memory of 2104	2524	cmd.exe	31
PID 2524 wrote to memory of 2704	2524	cmd.exe	32
PID 2524 wrote to memory of 2704	2524	cmd.exe	32
PID 2524 wrote to memory of 2704	2524	cmd.exe	32
PID 2524 wrote to memory of 2704	2524	cmd.exe	32
PID 2548 wrote to memory of 2436	2548	44656.exe	33
PID 2548 wrote to memory of 2436	2548	44656.exe	33
PID 2548 wrote to memory of 2436	2548	44656.exe	33
PID 2548 wrote to memory of 2436	2548	44656.exe	33
PID 2548 wrote to memory of 2436	2548	44656.exe	33
PID 2436 wrote to memory of 2100	2436	EhStorAuthn.exe	34
PID 2436 wrote to memory of 2100	2436	EhStorAuthn.exe	34
PID 2436 wrote to memory of 2100	2436	EhStorAuthn.exe	34
PID 2436 wrote to memory of 2100	2436	EhStorAuthn.exe	34

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:1548
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\44656.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\44656.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Loads dropped DLL
  - Maps connected drives based on registry
  - Suspicious use of WriteProcessMemory
  PID:2548
- - 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:2436
  - - 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:2100
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Roaming\del.bat
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2524
- - C:\Windows\SysWOW64\PING.EXE
    ping localhost -n 3
    3⤵
    - Runs ping.exe
    PID:2104
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del "C:\Users\Admin\AppData\Roaming\del.bat"
    3⤵
    PID:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

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

C:\Users\Admin\AppData\Roaming\del.bat

Filesize
170B

MD5
a4e647734e5d81ca311fb08c0dcd18cb

SHA1
b87f1e31d58a07f60c903927720825a92a3840b5

SHA256
ea8621af8832071483084f0ddb156ab7eb7349d14ec03d3d08b881cb941a1143

SHA512
26514370f3fb5c99b1e0c986ba9ec1387536e7b010025d3dd479d390c4662f9d722c0ed243b8b902bcd3b882e8a2f7102e9b93dcff2f5cbb5a8c54c59660f006

Download Submit
\Users\Admin\AppData\Local\z_Admin\wallpaper.mp4

Filesize
1.2MB

MD5
d124f55b9393c976963407dff51ffa79

SHA1
2c7bbedd79791bfb866898c85b504186db610b5d

SHA256
ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

SHA512
278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\44656.exe

Filesize
269KB

MD5
e640bdb76d7b30cb9ca9250d5b6631e3

SHA1
0540792efa9eb7ecdcfce3340dc0be1204c1e8c8

SHA256
b1af67bcfaa99c369960580f86e7c1a42fc473dd85a0a4d3b1c989a6bc138a42

SHA512
0d9bbc8f82a212cbb92595f2d5e7e4e1bab00061286f04441dce4c383827e3d55a60afee4e1d52b2af4ded201c5c54c046a4065ca055cfa1448b807a4a4a2034

Download Submit
memory/1548-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1548-3-0x0000000000400000-0x000000000177D000-memory.dmp

Filesize
19.5MB

Download
memory/1548-24-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/1548-23-0x0000000000400000-0x000000000177D000-memory.dmp

Filesize
19.5MB

Download
memory/1548-2-0x0000000000020000-0x0000000000029000-memory.dmp

Filesize
36KB

Download
memory/2436-34-0x0000000000080000-0x000000000008C000-memory.dmp

Filesize
48KB

Download
memory/2436-36-0x0000000000080000-0x000000000008C000-memory.dmp

Filesize
48KB

Download
memory/2436-37-0x0000000000080000-0x000000000008C000-memory.dmp

Filesize
48KB

Download
memory/2548-27-0x00000000018B0000-0x00000000019B0000-memory.dmp

Filesize
1024KB

Download
memory/2548-28-0x0000000000400000-0x000000000177D000-memory.dmp

Filesize
19.5MB

Download
memory/2548-32-0x0000000000400000-0x000000000177D000-memory.dmp

Filesize
19.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads