mystic | 92023f346ccc819d9c52da2af751cda1bc5396b5d745c68d99d1d2ff99db093a

Analysis

max time kernel
149s
max time network
151s
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, 10:08

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General

Target

da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.exe
Size

645KB
MD5

ff0a44771f8c71eb1e1133bad5a063f6
SHA1

aa94caffc849a8fc2d13a15dfee2dc9ac8ee3ea8
SHA256

da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548
SHA512

f4bf9a3d722328734efb3f3ea94661141ba0f1ad0b8b0e7977d63bd7f26a5ffff32213ec4608d9d9d8fdfb1d11a65dfaac2452ce7b505a8f4b36cbfa5620e211
SSDEEP

12288:CMrcy90K25kbg2PhnAnD7I+YOTHcd+WIngk9svUzXYY50zpgR4:qyq21AnCOTH5WzMXYu0u+

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 3 IoCs

resource	yara_rule
behavioral18/memory/4624-18-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral18/memory/4624-21-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral18/memory/4624-19-0x0000000000400000-0x0000000000434000-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
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
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

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
544	pB5bo16.exe
4832	1Zs95Ir0.exe
1676	2Zr8880.exe
3784	3su11BW.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\\\""	da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.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\\\""	pB5bo16.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4832 set thread context of 428	4832	1Zs95Ir0.exe	84
PID 1676 set thread context of 4624	1676	2Zr8880.exe	89

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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3su11BW.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3su11BW.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3su11BW.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
428	AppLaunch.exe
428	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	428	AppLaunch.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 544	628	da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.exe	82
PID 628 wrote to memory of 544	628	da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.exe	82
PID 628 wrote to memory of 544	628	da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.exe	82
PID 544 wrote to memory of 4832	544	pB5bo16.exe	83
PID 544 wrote to memory of 4832	544	pB5bo16.exe	83
PID 544 wrote to memory of 4832	544	pB5bo16.exe	83
PID 4832 wrote to memory of 428	4832	1Zs95Ir0.exe	84
PID 4832 wrote to memory of 428	4832	1Zs95Ir0.exe	84
PID 4832 wrote to memory of 428	4832	1Zs95Ir0.exe	84
PID 4832 wrote to memory of 428	4832	1Zs95Ir0.exe	84
PID 4832 wrote to memory of 428	4832	1Zs95Ir0.exe	84
PID 4832 wrote to memory of 428	4832	1Zs95Ir0.exe	84
PID 4832 wrote to memory of 428	4832	1Zs95Ir0.exe	84
PID 4832 wrote to memory of 428	4832	1Zs95Ir0.exe	84
PID 544 wrote to memory of 1676	544	pB5bo16.exe	86
PID 544 wrote to memory of 1676	544	pB5bo16.exe	86
PID 544 wrote to memory of 1676	544	pB5bo16.exe	86
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 1676 wrote to memory of 4624	1676	2Zr8880.exe	89
PID 628 wrote to memory of 3784	628	da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.exe	90
PID 628 wrote to memory of 3784	628	da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.exe	90
PID 628 wrote to memory of 3784	628	da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.exe	90

C:\Users\Admin\AppData\Local\Temp\da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.exe
"C:\Users\Admin\AppData\Local\Temp\da40ec1cf90ce4636876a76bd250b12ca3df8f973c3aa4752203ce19ac39a548.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\pB5bo16.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\pB5bo16.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:544
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Zs95Ir0.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Zs95Ir0.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4832
  - - 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:428
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Zr8880.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Zr8880.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1676
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:4624
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3su11BW.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3su11BW.exe
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  PID:3784

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3su11BW.exe

Filesize
30KB

MD5
fd912d5ab836700e1c976f2b73449722

SHA1
8796019546e053241cc6d10830bb125d0c4f5d44

SHA256
a44ac33c31320a1ff3546d70874df17d7d5553e66032e364b0f39e2ec5cce351

SHA512
14af0670cab5f56e34a1c01bfa8566d6c35a882a9640deda3b9fc7987b305ff796f5aacef766604e35fdf8c20cb050b8dc7c3cf1358bc43d683584a2059d1720

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\pB5bo16.exe

Filesize
521KB

MD5
eb394a7cf244711b5847f834612b5a96

SHA1
7f3d45f59cc16ca50710ee67db7d28d9752e462b

SHA256
7c31ec2e5cd94537ce5be8a8cbb2679d8bddd3dbdeb28e78c038c3c2e6c5811e

SHA512
6a23e392388b10fc8a0182000024964f7029dff346fb8ad93795526a53ac3c72842ea8ab5950d0738aa52438731c1f4a1edc4e864c41d74157eb7d9eb1936409

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Zs95Ir0.exe

Filesize
878KB

MD5
4f9fb77f53f7c0c809b26a7b5110a04a

SHA1
6995fa732bd77f79d18a88bd85adb4d2cfc90290

SHA256
9f69e58fb7a580110432af938cc6a780f380ea20cd1079fde12c6421c3441be0

SHA512
ae28ac715125f9870fdc88be6537df84ebe6bfacccdb8faff039a8d669911e3c9b05f25a7dfbf532fe00d3bcf0354630dc6fba5ed4d990cd0a8abcc9bd878ea6

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Zr8880.exe

Filesize
1.1MB

MD5
90b8a56ae2d1d120eeb356c6d27dc52c

SHA1
aa2314e5f8d427e3ed57f3caad7b17749bcc2acd

SHA256
8f8b7a5de111412d340245013f3032e824ab5b542bda88202232aec941a220ad

SHA512
a1e35824cb15a001c53117da8b6bfdfe8f06283f6d8539b0112d4f59598f7ce40190946933fcd6567267d730e410852a5d4cbe266d089b618ff249aebdc66e80

Download Submit
memory/428-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3784-25-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3784-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4624-18-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4624-21-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4624-19-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download