mystic | 8cc6679c34691a07ca82dfa2e42bb4cb80b8f3283bad650d6e3818ac030c32d3

Analysis

max time kernel
138s
max time network
110s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 19:04

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General

Target

061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe
Size

656KB
MD5

1a8079b8f19a5d0a3382c8f0f1c82b23
SHA1

2fa2c4c059b2b1da583ddee3173fadd02d501ff8
SHA256

061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3
SHA512

49657dc6adf64355cc4c14baa8b15da1dc1ce3897b770c530d66a593da220463e4072d09f0ad905da8c49e17cbca9fd8cbac4a63dc16a73a1ad922a41118ccdc
SSDEEP

12288:7Mrty90IqQic5Cf54N7Mw7KKNc9lKR+9W0Eu+wSGgjU427q4IIWI:yyVqQiUChU75Nc9lKR0W0EB+RCI

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 3 IoCs

resource	yara_rule
behavioral2/memory/2884-19-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral2/memory/2884-20-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral2/memory/2884-22-0x0000000000400000-0x0000000000433000-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
4484	aR4sY95.exe
2356	1GJ79bp7.exe
904	2Pj9120.exe
3360	3jY78be.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_cleanup1 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP001.TMP\\\""	aR4sY95.exe
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\\\""	061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2356 set thread context of 1232	2356	1GJ79bp7.exe	84
PID 904 set thread context of 2884	904	2Pj9120.exe	95

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4344	2356	WerFault.exe	83
224	904	WerFault.exe	91

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	3jY78be.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3jY78be.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3jY78be.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1232	AppLaunch.exe
1232	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1232	AppLaunch.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2768 wrote to memory of 4484	2768	061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe	82
PID 2768 wrote to memory of 4484	2768	061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe	82
PID 2768 wrote to memory of 4484	2768	061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe	82
PID 4484 wrote to memory of 2356	4484	aR4sY95.exe	83
PID 4484 wrote to memory of 2356	4484	aR4sY95.exe	83
PID 4484 wrote to memory of 2356	4484	aR4sY95.exe	83
PID 2356 wrote to memory of 1232	2356	1GJ79bp7.exe	84
PID 2356 wrote to memory of 1232	2356	1GJ79bp7.exe	84
PID 2356 wrote to memory of 1232	2356	1GJ79bp7.exe	84
PID 2356 wrote to memory of 1232	2356	1GJ79bp7.exe	84
PID 2356 wrote to memory of 1232	2356	1GJ79bp7.exe	84
PID 2356 wrote to memory of 1232	2356	1GJ79bp7.exe	84
PID 2356 wrote to memory of 1232	2356	1GJ79bp7.exe	84
PID 2356 wrote to memory of 1232	2356	1GJ79bp7.exe	84
PID 4484 wrote to memory of 904	4484	aR4sY95.exe	91
PID 4484 wrote to memory of 904	4484	aR4sY95.exe	91
PID 4484 wrote to memory of 904	4484	aR4sY95.exe	91
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 904 wrote to memory of 2884	904	2Pj9120.exe	95
PID 2768 wrote to memory of 3360	2768	061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe	98
PID 2768 wrote to memory of 3360	2768	061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe	98
PID 2768 wrote to memory of 3360	2768	061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe	98

C:\Users\Admin\AppData\Local\Temp\061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe
"C:\Users\Admin\AppData\Local\Temp\061d4b3cae1ba072bfa6849a31d62afd811d04b5a2eabddc17081e56f1701cc3.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2768
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\aR4sY95.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\aR4sY95.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4484
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1GJ79bp7.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1GJ79bp7.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2356
  - - 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:1232
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2356 -s 576
      4⤵
      Program crash
      PID:4344
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Pj9120.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Pj9120.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:904
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:2884
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 904 -s 572
      4⤵
      Program crash
      PID:224
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3jY78be.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3jY78be.exe
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  PID:3360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2356 -ip 2356
1⤵
PID:2616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 904 -ip 904
1⤵
PID:404

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\3jY78be.exe

Filesize
31KB

MD5
660ee44062a62cb8db14126820e8439a

SHA1
4ce91b12fa201fcd40a88ce01a3e06c129ff12a7

SHA256
cd6547c71b21b84db9f773a666ee290fad806b8f32e9c8a3f60c8c71fe92653a

SHA512
24323f8bff470d78a524d3b153124f192ae02bd64fa9d8a9cbb68033904640bf3c8b5dc63a7bafd599ec83c27c22964b36e19ce864372681578cd839dc4b9704

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\aR4sY95.exe

Filesize
532KB

MD5
88eb1d7a802a2b6b9e3fb4d8bc66a46d

SHA1
49316a947358d073b721dcd50c0b66e437c7cf9f

SHA256
8706421d0fcee839da39ea13c6e1cdfa1996fb0813eb099a3680146878b76857

SHA512
91c452df87bdabfd05e7e84507be9e3ec2e2c989d2f78f788ac183d39626bf3b69dca7f99f8124e83b4f230164515b38bbed7eba048b4a19f21f46fa6b7840ac

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1GJ79bp7.exe

Filesize
935KB

MD5
cbb313983c04005881fe4471332ce0e6

SHA1
38bea7fbef06c90380444951540567bb80e081c5

SHA256
b005b61dfb0c7a298fadc4b11ea9a7a5b11d305136e692e555020b7989274bcb

SHA512
ba7f725041e5e5fe41075497284357c7b8bce6ed1059f455da2d94262b56eeaf9028b58e1fc84419af1d3be96415a33dfa4982d9f7553ac3129d4b58940624b4

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Pj9120.exe

Filesize
1.1MB

MD5
25e8e635d50c9a8cd65c94b4a1ad2a03

SHA1
a091e7441672bfd52c2a917b982b53470068b472

SHA256
793ec3e4229f327d2c3787aa5cd4135033ce600cf9240d2a3e5d2bead6660c73

SHA512
ecbd779c50132878004cb5053a1a81c93053fe4e19aa46b115b0cf3b6efa0b7e49b9a7abc2a103526f1f16a52bd176ff52099a548a2ee810ee63c5345bcb837d

Download Submit
memory/1232-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1232-15-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/2884-19-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/2884-20-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/2884-22-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3360-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3360-27-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download