mystic | 9b80269950e0f1b633a8f97657fa8c4843d63cc1062890797edcbbcf58625520

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 09:42

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General

Target

823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.exe
Size

654KB
MD5

531a55b0843787d264949a52cffaf364
SHA1

03beb7ab2f6cdcb2d8e50e0c421c477ec542485a
SHA256

823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40
SHA512

13767a9564609db88521e9606781d881b87d1ad6e774849d8c0cc7ba9ffded0853d0404f5bd16013d94203c270c9586987f12eb5eee879318287e3f06f7a6280
SSDEEP

12288:/Mr6y90PeSqiA6ByIjd/ZMQCXOps5DgKWwLNWaUN1MOgsoo0H02LY:RyJhJs/ZMQCv/LNWqOgsbq9Y

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 3 IoCs

resource	yara_rule
behavioral10/memory/1236-18-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral10/memory/1236-21-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral10/memory/1236-19-0x0000000000400000-0x0000000000434000-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\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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	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
5020	Yk6uL64.exe
4740	1CB89dT8.exe
220	2yo2654.exe
4416	3ZX35rY.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\\\""	823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.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\\\""	Yk6uL64.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4740 set thread context of 3056	4740	1CB89dT8.exe	85
PID 220 set thread context of 1236	220	2yo2654.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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3ZX35rY.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3ZX35rY.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3ZX35rY.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3056	AppLaunch.exe
3056	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	AppLaunch.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3616 wrote to memory of 5020	3616	823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.exe	82
PID 3616 wrote to memory of 5020	3616	823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.exe	82
PID 3616 wrote to memory of 5020	3616	823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.exe	82
PID 5020 wrote to memory of 4740	5020	Yk6uL64.exe	83
PID 5020 wrote to memory of 4740	5020	Yk6uL64.exe	83
PID 5020 wrote to memory of 4740	5020	Yk6uL64.exe	83
PID 4740 wrote to memory of 3056	4740	1CB89dT8.exe	85
PID 4740 wrote to memory of 3056	4740	1CB89dT8.exe	85
PID 4740 wrote to memory of 3056	4740	1CB89dT8.exe	85
PID 4740 wrote to memory of 3056	4740	1CB89dT8.exe	85
PID 4740 wrote to memory of 3056	4740	1CB89dT8.exe	85
PID 4740 wrote to memory of 3056	4740	1CB89dT8.exe	85
PID 4740 wrote to memory of 3056	4740	1CB89dT8.exe	85
PID 4740 wrote to memory of 3056	4740	1CB89dT8.exe	85
PID 5020 wrote to memory of 220	5020	Yk6uL64.exe	86
PID 5020 wrote to memory of 220	5020	Yk6uL64.exe	86
PID 5020 wrote to memory of 220	5020	Yk6uL64.exe	86
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 220 wrote to memory of 1236	220	2yo2654.exe	89
PID 3616 wrote to memory of 4416	3616	823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.exe	90
PID 3616 wrote to memory of 4416	3616	823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.exe	90
PID 3616 wrote to memory of 4416	3616	823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.exe	90

C:\Users\Admin\AppData\Local\Temp\823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.exe
"C:\Users\Admin\AppData\Local\Temp\823db2b88de38daac96f8e746abe924341117f170be5cd8a57a2db86d001bc40.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3616
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Yk6uL64.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Yk6uL64.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:5020
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1CB89dT8.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1CB89dT8.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4740
  - - 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:3056
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2yo2654.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2yo2654.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:220
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:1236
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3ZX35rY.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3ZX35rY.exe
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  PID:4416

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\3ZX35rY.exe

Filesize
30KB

MD5
b3a38653e82e3e04cea0c18cc694e136

SHA1
b286df0eb93d10f5c566d4d8d386b2b782616db0

SHA256
76e50a42960ab6e72f8e898ae2ff54f4cc3a881924da045ce96770e46b79a490

SHA512
0f8b1340810592fff870c192df2b48384d78e79a4f946c7bb38fd175bb866bb5094493535b4d7fe4f8a076c10aa756e51c1747e35b54bcf2cc56aeeefe9609c4

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Yk6uL64.exe

Filesize
530KB

MD5
ddc8abfed19f1f6e359bf47f6f3c6550

SHA1
b62d5dd47e644c308a1249268a507bff94a60d14

SHA256
7bc7e03ef71896fdeb3a6a43e36ac8cbe7c77c2c79a81ad38afcc67b90592791

SHA512
9447ccfd1fb356501df31968655d2649f08b6f735044477cfe134170bb4ea9f7137dd3018527a3fcc43392a7918d2a344c3b06972a6d7eb2bd7a545d16a023f4

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1CB89dT8.exe

Filesize
883KB

MD5
caa88ce4c0fadad5c978cb5cc49ab324

SHA1
3245052b5b2c63a4612a31348d30a42982a1cbdf

SHA256
69264f90596997245842390e3880c24544884982b79f97625056f459622f3bba

SHA512
928855c9af2b52ab215133ae3b30147eab8096e882c55578d2dcfef4ed12c5b25f369deb663f6099b547d49d0459e6713bde160806203e46c3cb4b26faf12a9d

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2yo2654.exe

Filesize
1.1MB

MD5
a509c76fa57b9006d3c40bb19f8e6c30

SHA1
4318bcc9ac8806640fc4289bad531a4eee1346c6

SHA256
f729b516040f4e77783dd04cffe2b7dc63b87633110eabac9689538469f2f3bc

SHA512
a1ecc6db078967a3ba302a353faad552629e680a1dd84631da92f4ea690c16f8d2d7bf56e4c4a9f8e3096199f10eca3c30afde4eeab58dc3c188e400bd8d81aa

Download Submit
memory/1236-18-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1236-21-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1236-19-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3056-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4416-25-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4416-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download