mystic | 3767bd9b929fb47ae3b158c424044d32b3c87ffb6efc8eb109dc1df9f3d9b053

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
24-05-2024 08:20

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General

Target

50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe
Size

690KB
MD5

ded34aadbb2d073dca9fe7ab881865c2
SHA1

1152a50b60333303cf6122a25141fdad64bf2467
SHA256

50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6
SHA512

363e2a8155764e80ca17fed13951e343a18d7c6f9793f0d51b47c7b187e4da4e74386801032e9ad12542ae01dc24af686016f37aed1fab5ab75b3bb9dc554785
SSDEEP

12288:wMrly90TY1vFUS3OmEEz7jP7+i+EryADUjm9YWCcyVITDLGngoV14Jk/xBAY:FyBPROmx7jj+i+ErvDcm9DCcGI3LGgoL

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Gg2687.exe	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

Processes:

AppLaunch.exe

description	ioc	process
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
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

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

Processes:

Nm5dF04.exe1au95XV5.exe2Gg2687.exe3Po11LA.exe

pid process

2160 Nm5dF04.exe
1596 1au95XV5.exe
1496 2Gg2687.exe
1628 3Po11LA.exe

pid	process
2160	Nm5dF04.exe
1596	1au95XV5.exe
1496	2Gg2687.exe
1628	3Po11LA.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Nm5dF04.exe50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe

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\\\""	Nm5dF04.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\\\""	50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

1au95XV5.exe3Po11LA.exe

description	pid	process	target process
PID 1596 set thread context of 3040	1596	1au95XV5.exe	AppLaunch.exe
PID 1628 set thread context of 3620	1628	3Po11LA.exe	AppLaunch.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3508 1596 WerFault.exe 1au95XV5.exe
2980 1628 WerFault.exe 3Po11LA.exe

pid	pid_target	process	target process
3508	1596	WerFault.exe	1au95XV5.exe
2980	1628	WerFault.exe	3Po11LA.exe

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

Processes:

AppLaunch.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

AppLaunch.exe

pid process

3040 AppLaunch.exe
3040 AppLaunch.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

AppLaunch.exe

description pid process

Token: SeDebugPrivilege 3040 AppLaunch.exe

pid	process
3040	AppLaunch.exe
3040	AppLaunch.exe

description	pid	process
Token: SeDebugPrivilege	3040	AppLaunch.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exeNm5dF04.exe1au95XV5.exe3Po11LA.exe

description	pid	process	target process
PID 64 wrote to memory of 2160	64	50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe	Nm5dF04.exe
PID 64 wrote to memory of 2160	64	50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe	Nm5dF04.exe
PID 64 wrote to memory of 2160	64	50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe	Nm5dF04.exe
PID 2160 wrote to memory of 1596	2160	Nm5dF04.exe	1au95XV5.exe
PID 2160 wrote to memory of 1596	2160	Nm5dF04.exe	1au95XV5.exe
PID 2160 wrote to memory of 1596	2160	Nm5dF04.exe	1au95XV5.exe
PID 1596 wrote to memory of 3040	1596	1au95XV5.exe	AppLaunch.exe
PID 1596 wrote to memory of 3040	1596	1au95XV5.exe	AppLaunch.exe
PID 1596 wrote to memory of 3040	1596	1au95XV5.exe	AppLaunch.exe
PID 1596 wrote to memory of 3040	1596	1au95XV5.exe	AppLaunch.exe
PID 1596 wrote to memory of 3040	1596	1au95XV5.exe	AppLaunch.exe
PID 1596 wrote to memory of 3040	1596	1au95XV5.exe	AppLaunch.exe
PID 1596 wrote to memory of 3040	1596	1au95XV5.exe	AppLaunch.exe
PID 1596 wrote to memory of 3040	1596	1au95XV5.exe	AppLaunch.exe
PID 2160 wrote to memory of 1496	2160	Nm5dF04.exe	2Gg2687.exe
PID 2160 wrote to memory of 1496	2160	Nm5dF04.exe	2Gg2687.exe
PID 2160 wrote to memory of 1496	2160	Nm5dF04.exe	2Gg2687.exe
PID 64 wrote to memory of 1628	64	50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe	3Po11LA.exe
PID 64 wrote to memory of 1628	64	50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe	3Po11LA.exe
PID 64 wrote to memory of 1628	64	50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe	3Po11LA.exe
PID 1628 wrote to memory of 3620	1628	3Po11LA.exe	AppLaunch.exe
PID 1628 wrote to memory of 3620	1628	3Po11LA.exe	AppLaunch.exe
PID 1628 wrote to memory of 3620	1628	3Po11LA.exe	AppLaunch.exe
PID 1628 wrote to memory of 3620	1628	3Po11LA.exe	AppLaunch.exe
PID 1628 wrote to memory of 3620	1628	3Po11LA.exe	AppLaunch.exe
PID 1628 wrote to memory of 3620	1628	3Po11LA.exe	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe
"C:\Users\Admin\AppData\Local\Temp\50eee0d0cea3475aaf0d1b967b37fb6abff00bafb4fa6e17a8c948e2ef84aab6.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:64

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nm5dF04.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nm5dF04.exe
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2160

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1au95XV5.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1au95XV5.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1596

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:3040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 564
4⤵
- Program crash
PID:3508

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Gg2687.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Gg2687.exe
3⤵
- Executes dropped EXE
PID:1496

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3Po11LA.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3Po11LA.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1628

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
3⤵
- Checks SCSI registry key(s)
PID:3620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 580
3⤵
- Program crash
PID:2980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1596 -ip 1596
1⤵
PID:5112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1628 -ip 1628
1⤵
PID:3956

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\3Po11LA.exe

Filesize
896KB

MD5
baf1a3e94d7d12840c5a6d73b19f67d7

SHA1
bb34b8050f615df0737568e36352e468a2d82797

SHA256
56388fbb6b144e740e550e5b04cc88e244b531a134e1c26454f13afb73942631

SHA512
bf82b616e8300ff479275cc94254bf950d1876c3314e38d12d5d5c4e29dd4966beeed5c6c30d2e71541282a81236edf71466650b678f19be99ab6a8108300362

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nm5dF04.exe

Filesize
330KB

MD5
877c0ff8a9890b87f9553a77abfb64cb

SHA1
e7c3a145b2582a912548ff6f3b8d55c366f95115

SHA256
ea378bc3b81b8afc92afd17b9edc20d2f606e945c4650ce3820a65e7c13ddff8

SHA512
9c81bf30f7afd0426b63802750df2f18e9e6d4bee4288f83ca148c28ad3e2514190957e95d667ff1df586b8f5e1f347e18f747443194869777f4ee5cda46fa85

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1au95XV5.exe

Filesize
232KB

MD5
3ff825411b1fe07e712a5dcae34f80eb

SHA1
e3e4358cabfa74d6e36e26754b01ed78434a6877

SHA256
69bba958a5dcd8650921b25d978c4847819eb83adc143ba2bd396811d7d73739

SHA512
325c098b5a0a0ffee16a6074616126f9f4c7930b74507d38c63a294f659ab26fe1674af85a8ff495bd268aa821cc9d85f80f11ab1e7f828015920220e456ab81

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Gg2687.exe

Filesize
180KB

MD5
3f305144feb3040cf41b216841537ec2

SHA1
ae9066cc3b40be6250e7e6a90bcc2de160067b84

SHA256
89fec546032f1fc58fb08e79ab626d7e2401a5958b81a928ab5e0c1540e180b1

SHA512
ca3993ad5d0a376809e304a49eaf81c8ba3ecbe40e7085573698b1870291034f9bbfdec552b640b32d92b2f0b359f33c40f694f401abaf81d70ab7a6484a798e

Download Submit
memory/3040-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3040-15-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/3620-22-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download