mystic | 914615fc2a86a1a3aa8a108084dd30cc54e8b935b2f14f7def84c51a049c95c2

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 10:05

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General

Target

551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe
Size

654KB
MD5

9c272f79e87f707049e2b3ea38d8d734
SHA1

40bc0a5098a2e0adc245cc661bbd1d9d2e98daf5
SHA256

551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2
SHA512

4b4f35e7ad407e1ad1ab4a4964cace0a5eaefba576467b983fb54c0ec148187ce4a0ce37ffeaf77513874bebbfcaf7acb1a5822d72feb42be7ea56365ccfa840
SSDEEP

12288:9Mrhy906+U8HnIUUc16ItemCIDZM5u0Zfm8ixy/Y/xXB2uva:cybY71btbZM5X9nig/Y/n2uva

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 3 IoCs

resource	yara_rule
behavioral5/memory/4392-22-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral5/memory/4392-20-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral5/memory/4392-19-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family

Modifies Windows Defender Real-time Protection settings 3 TTPs 6 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	AppLaunch.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	AppLaunch.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	AppLaunch.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	AppLaunch.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	AppLaunch.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	AppLaunch.exe

Mystic
Mystic is an infostealer written in C++.
stealer mystic
SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Executes dropped EXE 4 IoCs

pid	Process
400	tE2bZ16.exe
1916	1Mw09oh8.exe
4060	2bE4378.exe
1388	3OO60aT.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup1 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP001.TMP\\\""	tE2bZ16.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1916 set thread context of 3712	1916	1Mw09oh8.exe	88
PID 4060 set thread context of 4392	4060	2bE4378.exe	94

Program crash 2 IoCs

pid	pid_target	Process	procid_target
756	1916	WerFault.exe	84
4232	4060	WerFault.exe	93

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI 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\Enum\SCSI	3OO60aT.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3OO60aT.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3OO60aT.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3712	AppLaunch.exe
3712	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3712	AppLaunch.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 400	4408	551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe	83
PID 4408 wrote to memory of 400	4408	551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe	83
PID 4408 wrote to memory of 400	4408	551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe	83
PID 400 wrote to memory of 1916	400	tE2bZ16.exe	84
PID 400 wrote to memory of 1916	400	tE2bZ16.exe	84
PID 400 wrote to memory of 1916	400	tE2bZ16.exe	84
PID 1916 wrote to memory of 844	1916	1Mw09oh8.exe	86
PID 1916 wrote to memory of 844	1916	1Mw09oh8.exe	86
PID 1916 wrote to memory of 844	1916	1Mw09oh8.exe	86
PID 1916 wrote to memory of 3712	1916	1Mw09oh8.exe	88
PID 1916 wrote to memory of 3712	1916	1Mw09oh8.exe	88
PID 1916 wrote to memory of 3712	1916	1Mw09oh8.exe	88
PID 1916 wrote to memory of 3712	1916	1Mw09oh8.exe	88
PID 1916 wrote to memory of 3712	1916	1Mw09oh8.exe	88
PID 1916 wrote to memory of 3712	1916	1Mw09oh8.exe	88
PID 1916 wrote to memory of 3712	1916	1Mw09oh8.exe	88
PID 1916 wrote to memory of 3712	1916	1Mw09oh8.exe	88
PID 400 wrote to memory of 4060	400	tE2bZ16.exe	93
PID 400 wrote to memory of 4060	400	tE2bZ16.exe	93
PID 400 wrote to memory of 4060	400	tE2bZ16.exe	93
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4060 wrote to memory of 4392	4060	2bE4378.exe	94
PID 4408 wrote to memory of 1388	4408	551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe	97
PID 4408 wrote to memory of 1388	4408	551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe	97
PID 4408 wrote to memory of 1388	4408	551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe	97

C:\Users\Admin\AppData\Local\Temp\551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe
"C:\Users\Admin\AppData\Local\Temp\551b1eafcb4ad29033561c600fd2cd92b4dbcea53d7714de0fb1b61ceb59b6e2.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\tE2bZ16.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\tE2bZ16.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:400
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Mw09oh8.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Mw09oh8.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1916
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:844
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      Modifies Windows Defender Real-time Protection settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3712
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 592
      4⤵
      Program crash
      PID:756
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2bE4378.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2bE4378.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4060
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:4392
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4060 -s 584
      4⤵
      Program crash
      PID:4232
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3OO60aT.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3OO60aT.exe
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  PID:1388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1916 -ip 1916
1⤵
PID:888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4060 -ip 4060
1⤵
PID:960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3OO60aT.exe

Filesize
30KB

MD5
9f849c7fd12eb162e4075fa2403c0b9a

SHA1
af499f417d7a8ce1a160e270c7f60636ae13eee7

SHA256
e0ebe4212b90b9894e71ed4b59d24c7521ba1d3ded5cc5bd9cc89f49e3719f73

SHA512
5e8975c2b38b6ed85b7ad38b77a633f0fe88522e47d97f2765a442d39062e0c9aa4d869955abed9831e94e3bac575bd20121602377c07364ec8096ee719a4d60

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\tE2bZ16.exe

Filesize
530KB

MD5
223d65343ef10e2f68ed86c5c4450145

SHA1
852cc5be340bf56e1d356a60db8ef7ae516316e3

SHA256
410d828e4bb0b32a4baabffc485aa4d7a5c0c62282317ae22a79ec01d4c779ea

SHA512
3ef69bb19a34ded65a11e3a7a997e23266f005e1c4f28128c987d493e6f918587f669e73d0284805f3a29c1ce7ee31b987e2e3408e595f1edf1b2b92198a88b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Mw09oh8.exe

Filesize
890KB

MD5
c89b4dd30549f75642ecaca3851b2181

SHA1
418f5489e8562e675038b1aaa06c35bb89a7884c

SHA256
e5f042a168eff8f347cb905fae96846e30d4ff2117ead7d86eb805517ef9d479

SHA512
40e7ebfc94198ce2c0bf809d2bb012160a7c8188e39bdc773ff9b9ce5fe06504138d635879eee97baab8f598934b1fa75c1f64ce401b15f14ce6efa18d7f4588

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2bE4378.exe

Filesize
1.1MB

MD5
4f36a68799d6f1275df207a1274eeaeb

SHA1
20099e082204209e6c1194fd1bc97dfd4f167859

SHA256
04dda7142d142e0f956ee25f4bfaf5be10e15ea6ddb074ae3ba81343fbf74512

SHA512
8b1d5ed777c1c4f9665e611fe7cd4730533205a1ba3a3c1759346ca00dace78e118996591a0c7f4700313c2f3cb67cc52c2bbf0392f6b13ebc7f72567948f592

Download Submit
memory/1388-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3712-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3712-15-0x0000000073C4E000-0x0000000073C4F000-memory.dmp

Filesize
4KB

Download
memory/4392-22-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4392-20-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4392-19-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download