mystic | 8ee265740e734e664a806025412118c1398e5fd5de8de7844c913c144f497faa

Analysis

max time kernel
139s
max time network
112s
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 17:24

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General

Target

d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.exe
Size

696KB
MD5

f232436d2ef0be5f59e459815d69f1e4
SHA1

6fa65d936facf2185bba69c0e1ffcc0c0685bd2a
SHA256

d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413
SHA512

a97de673347ab08539669585b3bf0467395efddfe186b2a03cced3897633f328b2ef3bc339a2da424d4b5001a4e193055071461d98f562c8185740b586241a15
SSDEEP

12288:MMrEy900G/Ur2wB+94JohzTabXD7zz1PHlrdMKF192w7DmFMpTBybonpn+fO:IyA/a2wQkczuBPHvT17Dmyltf

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 3 IoCs

resource	yara_rule
behavioral17/memory/2384-54-0x0000000000400000-0x0000000000428000-memory.dmp	mystic_family
behavioral17/memory/2384-57-0x0000000000400000-0x0000000000428000-memory.dmp	mystic_family
behavioral17/memory/2384-55-0x0000000000400000-0x0000000000428000-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\DisableScanOnRealtimeEnable = "1"	1uk51hm5.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	1uk51hm5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	1uk51hm5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	1uk51hm5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	1uk51hm5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	1uk51hm5.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
1960	oh4Cf31.exe
4920	1uk51hm5.exe
1028	2bz9399.exe
3620	3cJ55ze.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	1uk51hm5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	1uk51hm5.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\\\""	d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.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\\\""	oh4Cf31.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1028 set thread context of 2384	1028	2bz9399.exe	96
PID 3620 set thread context of 2524	3620	3cJ55ze.exe	102

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1124	1028	WerFault.exe	94
912	3620	WerFault.exe	100

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	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

pid	Process
4920	1uk51hm5.exe
4920	1uk51hm5.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	1uk51hm5.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 1960	2116	d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.exe	83
PID 2116 wrote to memory of 1960	2116	d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.exe	83
PID 2116 wrote to memory of 1960	2116	d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.exe	83
PID 1960 wrote to memory of 4920	1960	oh4Cf31.exe	84
PID 1960 wrote to memory of 4920	1960	oh4Cf31.exe	84
PID 1960 wrote to memory of 4920	1960	oh4Cf31.exe	84
PID 1960 wrote to memory of 1028	1960	oh4Cf31.exe	94
PID 1960 wrote to memory of 1028	1960	oh4Cf31.exe	94
PID 1960 wrote to memory of 1028	1960	oh4Cf31.exe	94
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 1028 wrote to memory of 2384	1028	2bz9399.exe	96
PID 2116 wrote to memory of 3620	2116	d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.exe	100
PID 2116 wrote to memory of 3620	2116	d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.exe	100
PID 2116 wrote to memory of 3620	2116	d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.exe	100
PID 3620 wrote to memory of 2524	3620	3cJ55ze.exe	102
PID 3620 wrote to memory of 2524	3620	3cJ55ze.exe	102
PID 3620 wrote to memory of 2524	3620	3cJ55ze.exe	102
PID 3620 wrote to memory of 2524	3620	3cJ55ze.exe	102
PID 3620 wrote to memory of 2524	3620	3cJ55ze.exe	102
PID 3620 wrote to memory of 2524	3620	3cJ55ze.exe	102

C:\Users\Admin\AppData\Local\Temp\d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.exe
"C:\Users\Admin\AppData\Local\Temp\d68f556e867c0edd6db1857c4fa9aa2c6410b74fde30d6438fe50ffcf382e413.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\oh4Cf31.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\oh4Cf31.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1960
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1uk51hm5.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1uk51hm5.exe
    3⤵
    - Modifies Windows Defender Real-time Protection settings
    - Executes dropped EXE
    - Windows security modification
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4920
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2bz9399.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2bz9399.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1028
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:2384
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1028 -s 156
      4⤵
      Program crash
      PID:1124
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3cJ55ze.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3cJ55ze.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:3620
- - 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:2524
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3620 -s 600
    3⤵
    - Program crash
    PID:912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1028 -ip 1028
1⤵
PID:1972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3620 -ip 3620
1⤵
PID:4280

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\3cJ55ze.exe

Filesize
268KB

MD5
f09b788bfb242f8edcb4b4ab2bd0275a

SHA1
71b2273479460cbda9d08073d0b116935d2c6813

SHA256
f291d8694f3198b824474d57a18792218a5d622f2f59370efe6679563db87521

SHA512
709bdc1a303159b27f7e7fa793d1c78f3d6223b5a3ba2c03cbea36eafc1bd0e2edc1bd19e61f7ed5ca53a1ab5018d7c171fc9c3c4ff67b02b4087a07cfd5dda6

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\oh4Cf31.exe

Filesize
452KB

MD5
3b291c0e4a602a5ab15eef82a5ed8483

SHA1
b2009375019e0d159bcce167d5b21527775bc3ec

SHA256
f933232ae1d4c915f0da1e053e97ca026bbdf872781b09369418b927c4a56dde

SHA512
d4df658d6e2d5106f7c9d5988aa4ddf5056a644179cfc3d2c4bab45267455a1da9d1b229a7df4cab5339876c9c0ce581a6347af884d95d12f001fc802a0b84f9

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1uk51hm5.exe

Filesize
192KB

MD5
8904f85abd522c7d0cb5789d9583ccff

SHA1
5b34d8595b37c9e1fb9682b06dc5228efe07f0c6

SHA256
7624b62fe97c8e370c82bc86f69c2f627328e701ce1f3d9bed92a1e5fe11fd7f

SHA512
04dd0c4e612b6287af6a655425085d687538d756dcd639ecb6c62bcdafddde52c56ae305a6240ee1329a95d9cc59dee6de5000d273a5a560ad1adc3284e00e12

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2bz9399.exe

Filesize
378KB

MD5
f0831f173733de08511f3a0739f278a6

SHA1
06dc809d653c5d2c97386084ae13b50a73eb5b60

SHA256
8b00f9dce8ceb2123fba3bc9f88419960d1e661b6287eafeba4f0a2ee4be3d27

SHA512
19e3176ce1f154758f685cc4582e93587aa534a251de315473e35758dcd6ff6315880be7602097308dc89c355742be4729bad81de597e8d430a8e868082314e3

Download Submit
memory/2384-55-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2384-57-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2384-54-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2524-61-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4920-41-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-23-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-48-0x00000000742E0000-0x0000000074A90000-memory.dmp

Filesize
7.7MB

Download
memory/4920-47-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-45-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-43-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-37-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-31-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-29-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-27-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-25-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-39-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-21-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-20-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-35-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-33-0x0000000002430000-0x0000000002446000-memory.dmp

Filesize
88KB

Download
memory/4920-50-0x00000000742E0000-0x0000000074A90000-memory.dmp

Filesize
7.7MB

Download
memory/4920-19-0x00000000742E0000-0x0000000074A90000-memory.dmp

Filesize
7.7MB

Download
memory/4920-18-0x0000000002430000-0x000000000244C000-memory.dmp

Filesize
112KB

Download
memory/4920-16-0x00000000742E0000-0x0000000074A90000-memory.dmp

Filesize
7.7MB

Download
memory/4920-17-0x0000000004BD0000-0x0000000005174000-memory.dmp

Filesize
5.6MB

Download
memory/4920-15-0x00000000021A0000-0x00000000021BE000-memory.dmp

Filesize
120KB

Download
memory/4920-14-0x00000000742EE000-0x00000000742EF000-memory.dmp

Filesize
4KB

Download