mystic | 3bad5318d1eadf9f6d544fc5ed49c1e737fb2db130f60b70bab6f26392c87c30

Analysis

max time kernel
136s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 10:50

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General

Target

5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.exe
Size

895KB
MD5

0721b544aaf0359c0f310cbc448d3d65
SHA1

a4f8593939e868dbae1d8b1323b58124e3741a52
SHA256

5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79
SHA512

10a70297d06cbcd968b6c3490c4ed12dcbe074038ac169bdca48e540814d7732b26d7d1861b360e0749cda83e82e9da90ba21ef53d0957b40737b8151abb51b4
SSDEEP

12288:nMrOy901KMmvVAZdBzcW7jPw+i4P5dOglj/jPd+69FzvPUQOIxLaJh5li+7GSAYc:dy5aZdBcW7jo+iY5jlnPdtzzcaG1c

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Extracted

Family

mystic

http://5.42.92.211/

Signatures

Detect Mystic stealer payload 3 IoCs

resource	yara_rule
behavioral10/memory/4508-19-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral10/memory/4508-22-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral10/memory/4508-20-0x0000000000400000-0x0000000000433000-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
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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "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

pid	Process
220	TK1je97.exe
1736	1sN60ub9.exe
3676	2MZ3080.exe
4008	3pC03Bq.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\\\""	5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.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\\\""	TK1je97.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1736 set thread context of 4576	1736	1sN60ub9.exe	92
PID 3676 set thread context of 4508	3676	2MZ3080.exe	107
PID 4008 set thread context of 4444	4008	3pC03Bq.exe	113

Program crash 3 IoCs

pid	pid_target	Process	procid_target
1184	1736	WerFault.exe	91
1492	3676	WerFault.exe	98
4396	4008	WerFault.exe	111

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

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4576	AppLaunch.exe
4576	AppLaunch.exe
4576	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4576	AppLaunch.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4388 wrote to memory of 220	4388	5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.exe	90
PID 4388 wrote to memory of 220	4388	5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.exe	90
PID 4388 wrote to memory of 220	4388	5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.exe	90
PID 220 wrote to memory of 1736	220	TK1je97.exe	91
PID 220 wrote to memory of 1736	220	TK1je97.exe	91
PID 220 wrote to memory of 1736	220	TK1je97.exe	91
PID 1736 wrote to memory of 4576	1736	1sN60ub9.exe	92
PID 1736 wrote to memory of 4576	1736	1sN60ub9.exe	92
PID 1736 wrote to memory of 4576	1736	1sN60ub9.exe	92
PID 1736 wrote to memory of 4576	1736	1sN60ub9.exe	92
PID 1736 wrote to memory of 4576	1736	1sN60ub9.exe	92
PID 1736 wrote to memory of 4576	1736	1sN60ub9.exe	92
PID 1736 wrote to memory of 4576	1736	1sN60ub9.exe	92
PID 1736 wrote to memory of 4576	1736	1sN60ub9.exe	92
PID 220 wrote to memory of 3676	220	TK1je97.exe	98
PID 220 wrote to memory of 3676	220	TK1je97.exe	98
PID 220 wrote to memory of 3676	220	TK1je97.exe	98
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 3676 wrote to memory of 4508	3676	2MZ3080.exe	107
PID 4388 wrote to memory of 4008	4388	5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.exe	111
PID 4388 wrote to memory of 4008	4388	5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.exe	111
PID 4388 wrote to memory of 4008	4388	5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.exe	111
PID 4008 wrote to memory of 4444	4008	3pC03Bq.exe	113
PID 4008 wrote to memory of 4444	4008	3pC03Bq.exe	113
PID 4008 wrote to memory of 4444	4008	3pC03Bq.exe	113
PID 4008 wrote to memory of 4444	4008	3pC03Bq.exe	113
PID 4008 wrote to memory of 4444	4008	3pC03Bq.exe	113
PID 4008 wrote to memory of 4444	4008	3pC03Bq.exe	113

C:\Users\Admin\AppData\Local\Temp\5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.exe
"C:\Users\Admin\AppData\Local\Temp\5233b9c00ad7ff437dc70a2133e2e6251bcd63221cf9acbc7f1f8b00c9305c79.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4388
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\TK1je97.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\TK1je97.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:220
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1sN60ub9.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1sN60ub9.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1736
  - - 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:4576
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 564
      4⤵
      Program crash
      PID:1184
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2MZ3080.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2MZ3080.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3676
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:4508
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3676 -s 212
      4⤵
      Program crash
      PID:1492
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3pC03Bq.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3pC03Bq.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4008
- - 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:4444
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4008 -s 136
    3⤵
    - Program crash
    PID:4396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1736 -ip 1736
1⤵
PID:3004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3676 -ip 3676
1⤵
PID:1988

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4200,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=4024 /prefetch:8
1⤵
PID:3168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4008 -ip 4008
1⤵
PID:3752

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\3pC03Bq.exe

Filesize
896KB

MD5
4ce2eba70b4f24e2d0338bd93b736634

SHA1
2ec6f5a8b77464e05587eca0ad8f7f992b886d58

SHA256
3bd08af6894235de4115ecf72ae042bcd149a99781fb92ae6c362b20936420e1

SHA512
cd1d30933f56d313c38483bb779076785d3c87176514cc7c125a43d1e1cb449580f9a1e972b2ae90925f329ab0f0244ab81edf831ce1215215be209dd76d4608

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\TK1je97.exe

Filesize
533KB

MD5
bd2094b647f5a83fe89df2da2ee820fb

SHA1
06a15a9a4957f50056f2d11c7c53cc2de40e4a94

SHA256
c42d46df4c652954f38b202f1b831633227d23929046ab08509a9ddf7f1074d7

SHA512
890f468d6a24efbd130ccc5291c8e6c9f4d253411f58bdc5a2ad3dc9049befcdc31cdf1a4f8183825be2abc57070ab9bfc1d192c88031cba67aa46894a7cc728

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1sN60ub9.exe

Filesize
232KB

MD5
3ff825411b1fe07e712a5dcae34f80eb

SHA1
e3e4358cabfa74d6e36e26754b01ed78434a6877

SHA256
69bba958a5dcd8650921b25d978c4847819eb83adc143ba2bd396811d7d73739

SHA512
325c098b5a0a0ffee16a6074616126f9f4c7930b74507d38c63a294f659ab26fe1674af85a8ff495bd268aa821cc9d85f80f11ab1e7f828015920220e456ab81

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2MZ3080.exe

Filesize
1.1MB

MD5
695ae0fd9fc86c3a6ef5b04298362734

SHA1
177065f61641c5283fa62209f60a74ce4d20a1e5

SHA256
42670d586131a865a20ee26d90323721ef54ef0fe121335e2a7ec3ae67e4825e

SHA512
455eb6a40a6ede19a3a19ef874e596977d36c1f393b4889d8cb157896247636c747365fa2eeb5ba461ce6a1ca96d0bc38153e3548b338d143c01cae97fa1ea9b

Download Submit
memory/4444-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4508-19-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4508-22-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4508-20-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4576-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4576-15-0x0000000073E9E000-0x0000000073E9F000-memory.dmp

Filesize
4KB

Download