mystic | 914615fc2a86a1a3aa8a108084dd30cc54e8b935b2f14f7def84c51a049c95c2

Analysis

max time kernel
135s
max time network
125s
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 10:05

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General

Target

bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.exe
Size

648KB
MD5

78560e3710160b589c68ffb486269717
SHA1

d7947a041177ec309ddcfbdfac376d93127f33c9
SHA256

bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e
SHA512

bf231646ea976ceb3ef1fc5248fb54051bf7c23f80adaed24ceafe4764757c54c0cf081d7ea915c2b6bc645280d067bcd3cc81d129d8f949d5aca6449df270f3
SSDEEP

12288:QMrfy906D01jVaMIgw+rPQUDcrNl4I7mSor/2fxJ3bNIxbeuBK:fyhGjoMFwgPQEcrNrw4xJrNuez

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 3 IoCs

resource	yara_rule
behavioral16/memory/2692-21-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral16/memory/2692-19-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral16/memory/2692-18-0x0000000000400000-0x0000000000434000-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"	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

pid	Process
2944	Rd7FR91.exe
3520	1wS75VV5.exe
2656	2zD8293.exe
4804	3CL62Eh.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\\\""	bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.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\\\""	Rd7FR91.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3520 set thread context of 4744	3520	1wS75VV5.exe	84
PID 2656 set thread context of 2692	2656	2zD8293.exe	87

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3472	sc.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

description	ioc	Process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3CL62Eh.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3CL62Eh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3CL62Eh.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4744	AppLaunch.exe
4744	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4744	AppLaunch.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 2944	1288	bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.exe	82
PID 1288 wrote to memory of 2944	1288	bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.exe	82
PID 1288 wrote to memory of 2944	1288	bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.exe	82
PID 2944 wrote to memory of 3520	2944	Rd7FR91.exe	83
PID 2944 wrote to memory of 3520	2944	Rd7FR91.exe	83
PID 2944 wrote to memory of 3520	2944	Rd7FR91.exe	83
PID 3520 wrote to memory of 4744	3520	1wS75VV5.exe	84
PID 3520 wrote to memory of 4744	3520	1wS75VV5.exe	84
PID 3520 wrote to memory of 4744	3520	1wS75VV5.exe	84
PID 3520 wrote to memory of 4744	3520	1wS75VV5.exe	84
PID 3520 wrote to memory of 4744	3520	1wS75VV5.exe	84
PID 3520 wrote to memory of 4744	3520	1wS75VV5.exe	84
PID 3520 wrote to memory of 4744	3520	1wS75VV5.exe	84
PID 3520 wrote to memory of 4744	3520	1wS75VV5.exe	84
PID 2944 wrote to memory of 2656	2944	Rd7FR91.exe	85
PID 2944 wrote to memory of 2656	2944	Rd7FR91.exe	85
PID 2944 wrote to memory of 2656	2944	Rd7FR91.exe	85
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 2656 wrote to memory of 2692	2656	2zD8293.exe	87
PID 1288 wrote to memory of 4804	1288	bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.exe	88
PID 1288 wrote to memory of 4804	1288	bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.exe	88
PID 1288 wrote to memory of 4804	1288	bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.exe	88

C:\Users\Admin\AppData\Local\Temp\bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.exe
"C:\Users\Admin\AppData\Local\Temp\bdef450da794b4f4ae5a97848eb8c7e8075b0a2f19e500d6373ad4d4da725b8e.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Rd7FR91.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Rd7FR91.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2944
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1wS75VV5.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1wS75VV5.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3520
  - - 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:4744
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2zD8293.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2zD8293.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2656
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:2692
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3CL62Eh.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3CL62Eh.exe
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  PID:4804

C:\Windows\system32\sc.exe
C:\Windows\system32\sc.exe start wuauserv
1⤵
- Launches sc.exe
PID:3472

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\3CL62Eh.exe

Filesize
31KB

MD5
788639e9fda87bab32d2d5e4086c24b2

SHA1
79177ebde64b7f0edcfadd9c46e32d464138d463

SHA256
d0d58e4871c9eff51a28a9c17b46d42013193f2c00a9462c3adce29e07f7d839

SHA512
47c489c33090c614e2cad90314521669f8b4f34d876f2e7249ac6c1e6b063db3cbca2d1c5fb973da69fd67ee2dde3df174321498cdfdfe923b2c557366758ed2

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Rd7FR91.exe

Filesize
523KB

MD5
0266c19589ffdf20316c5e19be6f7fe2

SHA1
196d0c0653a5e09a98c89b3ffda87d61ec6169d1

SHA256
57f7ca651d33eeb0eaa17a10d7f195da54810612b8557b4cbc67b1b620fa7e28

SHA512
64e7a2badc64bbc67069505d00cbf69d4f2a9cd4c1be42bebf2aea67809dbf3b9179f2e669bda52c4de6dd46ccf426fdec6e9701d876b9e30f2da172739da769

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1wS75VV5.exe

Filesize
874KB

MD5
c1079f39e435b304272b2d668cf19921

SHA1
c8c7c7b15c5e2c71e87ece71c55f61e2d35b59aa

SHA256
35fb4f9c39be77010c8a54b5d4ef5e044ac94b01ca8ac3461d6321b3b514ae4f

SHA512
a6c1e9e10f21926b481463ab116974f67f962c7b65950db0c7d5c7d5fe4977db16cbec0674f76f45339bd5f64f3215657861d3ea7b2bb457439ec3949db912ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2zD8293.exe

Filesize
1.1MB

MD5
2a4fc8cdc7ae1f672c43f45b356a07fe

SHA1
a55c266b7e3c257f62d11e28e48e9ddfe5ed5dc6

SHA256
5606eed917e232c85490f6518f182dfc032c6386e511797dd6f1638fb223a2b3

SHA512
7debe6dda68f02ed742eccc0a2b1aada3ea54d9d66cff436b7a4630007e62e93754fc6595fdecfabd584b810fde7eb05f15e6c786515c6ddeb259dac2d8617f3

Download Submit
memory/2692-21-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2692-19-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2692-18-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4744-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4804-25-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4804-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download