mystic | be3323c3b2bd6ba736703199d528de6bf1396e8a7c6b9b58e4ca31fda43b00e0

Analysis

max time kernel
142s
max time network
138s
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 08:41

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General

Target

864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.exe
Size

605KB
MD5

5232c11ee090fe4a8fbde69d1f452ba2
SHA1

ad508a34f36f8f0d1bcd7b06fc3e79a829a1f374
SHA256

864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03
SHA512

76c8261dc7a2dc3c849c2b0e4f36751604a969b2ed29029552014d664e7342b11472421330e3181126c87ba0e5cd4f14597a1fe37c0a28da54a21433f9b95270
SSDEEP

12288:LMr1y90+pMc0JJGdc9wvughyZh/rgUSt9F5vhz0Gz:ayOcU5zguFUvhwGz

Score

10^/10

mystic smokeloader backdoor persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 3 IoCs

Processes:

resource	yara_rule
behavioral12/memory/4588-27-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral12/memory/4588-30-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral12/memory/4588-28-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family

Mystic
Mystic is an infostealer written in C++.
stealer mystic
SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
.NET Reactor proctector 2 IoCs
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

Processes:

resource yara_rule

behavioral12/memory/3316-15-0x0000000002330000-0x0000000002350000-memory.dmp net_reactor
behavioral12/memory/3316-17-0x0000000004990000-0x00000000049AE000-memory.dmp net_reactor
Executes dropped EXE 4 IoCs

Processes:

cm1qj45.exe1Yx67SE5.exe2XJ2373.exe3gH49Ye.exe

pid process

4348 cm1qj45.exe
3316 1Yx67SE5.exe
3936 2XJ2373.exe
1600 3gH49Ye.exe

resource	yara_rule
behavioral12/memory/3316-15-0x0000000002330000-0x0000000002350000-memory.dmp	net_reactor
behavioral12/memory/3316-17-0x0000000004990000-0x00000000049AE000-memory.dmp	net_reactor

pid	process
4348	cm1qj45.exe
3316	1Yx67SE5.exe
3936	2XJ2373.exe
1600	3gH49Ye.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.execm1qj45.exe

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\\\""	864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.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\\\""	cm1qj45.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

2XJ2373.exe3gH49Ye.exe

description pid process target process

PID 3936 set thread context of 4588 3936 2XJ2373.exe AppLaunch.exe
PID 1600 set thread context of 2492 1600 3gH49Ye.exe AppLaunch.exe
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3404 3936 WerFault.exe 2XJ2373.exe
756 1600 WerFault.exe

description	pid	process	target process
PID 3936 set thread context of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 1600 set thread context of 2492	1600	3gH49Ye.exe	AppLaunch.exe

pid	pid_target	process	target process
3404	3936	WerFault.exe	2XJ2373.exe
756	1600	WerFault.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 use of AdjustPrivilegeToken 1 IoCs

Processes:

1Yx67SE5.exe

description pid process

Token: SeDebugPrivilege 3316 1Yx67SE5.exe

description	pid	process
Token: SeDebugPrivilege	3316	1Yx67SE5.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.execm1qj45.exe2XJ2373.exe3gH49Ye.exe

description	pid	process	target process
PID 3680 wrote to memory of 4348	3680	864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.exe	cm1qj45.exe
PID 3680 wrote to memory of 4348	3680	864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.exe	cm1qj45.exe
PID 3680 wrote to memory of 4348	3680	864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.exe	cm1qj45.exe
PID 4348 wrote to memory of 3316	4348	cm1qj45.exe	1Yx67SE5.exe
PID 4348 wrote to memory of 3316	4348	cm1qj45.exe	1Yx67SE5.exe
PID 4348 wrote to memory of 3316	4348	cm1qj45.exe	1Yx67SE5.exe
PID 4348 wrote to memory of 3936	4348	cm1qj45.exe	2XJ2373.exe
PID 4348 wrote to memory of 3936	4348	cm1qj45.exe	2XJ2373.exe
PID 4348 wrote to memory of 3936	4348	cm1qj45.exe	2XJ2373.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3936 wrote to memory of 4588	3936	2XJ2373.exe	AppLaunch.exe
PID 3680 wrote to memory of 1600	3680	864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.exe	3gH49Ye.exe
PID 3680 wrote to memory of 1600	3680	864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.exe	3gH49Ye.exe
PID 3680 wrote to memory of 1600	3680	864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.exe	3gH49Ye.exe
PID 1600 wrote to memory of 2492	1600	3gH49Ye.exe	AppLaunch.exe
PID 1600 wrote to memory of 2492	1600	3gH49Ye.exe	AppLaunch.exe
PID 1600 wrote to memory of 2492	1600	3gH49Ye.exe	AppLaunch.exe
PID 1600 wrote to memory of 2492	1600	3gH49Ye.exe	AppLaunch.exe
PID 1600 wrote to memory of 2492	1600	3gH49Ye.exe	AppLaunch.exe
PID 1600 wrote to memory of 2492	1600	3gH49Ye.exe	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.exe
"C:\Users\Admin\AppData\Local\Temp\864fc029724f0d9d2cbfc5469cf806bb3431fdde2ed473a19fbb890b3282bf03.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3680

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\cm1qj45.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\cm1qj45.exe
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4348

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Yx67SE5.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Yx67SE5.exe
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3316

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2XJ2373.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2XJ2373.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3936

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
4⤵
PID:4588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3936 -s 140
4⤵
- Program crash
PID:3404

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3gH49Ye.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3gH49Ye.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1600

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:2492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1600 -s 152
3⤵
- Program crash
PID:756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3936 -ip 3936
1⤵
PID:5000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1600 -ip 1600
1⤵
PID:1160

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3gH49Ye.exe
Filesize
145KB

MD5
48bce5a94c23f5fb41fef672a154f3c3

SHA1
592795aa9424bce8456ed6bf5145b4ee4030dea2

SHA256
008ff96edda147b9f601f058ebbb51e36f7a191a186ad46a1d93b509670131be

SHA512
8642ecd8722d39a9ccf860add0a3acf44790e253798b912c6be854a56a690d7522019873fb3824e96454a392ce60e41db12e81e45be96bad7ec1adc5a7b4348d

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\cm1qj45.exe
Filesize
421KB

MD5
87ee40d6c92bb156b8f33955a66bcb42

SHA1
38faa38fc6ac25f2bc3b6e6263cb38065dac7133

SHA256
a213bb820e3b04aa0f9ed2d69ac5eef80ff185eb6883c7299d05ec8c635b44d6

SHA512
bafe32eebdf7116c4f0ad625f58b82b4fdcfdce274b19c46e8c3312422b2da3022b848e5117a325e1fbe75bb0d6ae70a27fec8df530d50ff26ce85ec927aca7f

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Yx67SE5.exe
Filesize
188KB

MD5
425e2a994509280a8c1e2812dfaad929

SHA1
4d5eff2fb3835b761e2516a873b537cbaacea1fe

SHA256
6f40f29ad16466785dfbe836dd375400949ff894e8aa03e2805ab1c1ac2d6f5a

SHA512
080a41e7926122e14b38901f2e1eb8100a08c5068a9a74099f060c5e601f056a66e607b4e006820276834bb01d913a3894de98e6d9ba62ce843df14058483aa0

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2XJ2373.exe
Filesize
295KB

MD5
8e224abf2b75c656df5de9d7ad26a28f

SHA1
6966b62dc46debf777adacef5068e3fbaa531265

SHA256
f00cbde5381a2a373ebabf761c6e7dc1a1724e56d97f381c5824da0d800bf42c

SHA512
2c2ec21ac0608d46613cb0f432f79eb58270dddfdba7709a2c5a1c65ff182698f5ec084a6d76cfdf168c0e376c96ba3b30b7647e16ed88a83247f57575a8a23e

Download Submit
memory/2492-34-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3316-20-0x00000000742E0000-0x0000000074A90000-memory.dmp

Filesize
7.7MB

Download
memory/3316-18-0x00000000742E0000-0x0000000074A90000-memory.dmp

Filesize
7.7MB

Download
memory/3316-19-0x00000000050A0000-0x0000000005132000-memory.dmp

Filesize
584KB

Download
memory/3316-17-0x0000000004990000-0x00000000049AE000-memory.dmp

Filesize
120KB

Download
memory/3316-21-0x00000000742E0000-0x0000000074A90000-memory.dmp

Filesize
7.7MB

Download
memory/3316-23-0x00000000742E0000-0x0000000074A90000-memory.dmp

Filesize
7.7MB

Download
memory/3316-16-0x00000000049F0000-0x0000000004F94000-memory.dmp

Filesize
5.6MB

Download
memory/3316-15-0x0000000002330000-0x0000000002350000-memory.dmp

Filesize
128KB

Download
memory/3316-14-0x00000000742EE000-0x00000000742EF000-memory.dmp

Filesize
4KB

Download
memory/4588-27-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/4588-30-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/4588-28-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download