mystic | dd599a6bab1a1dabfa1fca35b3aa571004102301666e21fec5316076b068ab55

Analysis

max time kernel
91s
max time network
102s
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, 10:18

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General

Target
5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe
Size 334KB
Sample240524-mb2gdade3y
SHA256 5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca
MD5 028bb2836faeb4ed911711bbae9ad27d
SHA1 bd16951419c1a78c8e23f0e1666249ca3e50c409
SHA512 7bf790bc6aaa9663817770a418bc96c7738d4efd2433dcff9c616cb0c37bf42d7db10b4019b510ed2d069cb38374cb2faa2a0bd0b2f3adf5e82b0da1f2adf170
SSDEEP 6144:Kby+bnr+4p0yN90QEpQ4eSEo9i3CbxJTUHMh8WZP0g+4+WHSWp3WdnYK:NMr0y90bFeSD9i3YJTUs2Wug+4+wS9j
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

mystic smokeloader backdoor persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 4 IoCs

resource	yara_rule
behavioral7/memory/3228-7-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral7/memory/3228-11-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral7/memory/3228-8-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral7/memory/3228-9-0x0000000000400000-0x0000000000433000-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

Executes dropped EXE 2 IoCs

pid	Process
2624	1qF29QN9.exe
4416	2Sj9142.exe

Adds Run key to start application 2 TTPs 1 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\\\""	5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2624 set thread context of 3228	2624	1qF29QN9.exe	86

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2864	3228	WerFault.exe	86

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	2Sj9142.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	2Sj9142.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	2Sj9142.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3628 wrote to memory of 2624	3628	5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe	82
PID 3628 wrote to memory of 2624	3628	5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe	82
PID 3628 wrote to memory of 2624	3628	5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe	82
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 2624 wrote to memory of 3228	2624	1qF29QN9.exe	86
PID 3628 wrote to memory of 4416	3628	5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe	89
PID 3628 wrote to memory of 4416	3628	5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe	89
PID 3628 wrote to memory of 4416	3628	5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe	89

C:\Users\Admin\AppData\Local\Temp\5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe
"C:\Users\Admin\AppData\Local\Temp\5f5fe0dfe7abbcda9826593f0816a3b72630e87a3d058a3382b48820dfc0f3ca.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3628
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1qF29QN9.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1qF29QN9.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2624
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:3228
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3228 -s 548
      4⤵
      Program crash
      PID:2864
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2Sj9142.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2Sj9142.exe
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  PID:4416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3228 -ip 3228
1⤵
PID:1756

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

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

1qF29QN9.exe

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1qF29QN9.exe
Size 300KB
SHA256 1025fb084bca865df30e69eea7a9a4a3c852626e148b340de661e6f5b63bc1c9
MD5 784667bb96ccb30c4cf44f2c5f493769
SHA1 28185165ab4dbbb4a139ae1af0bb6934ebe05c04
SHA512 62c9def097f132cdb26b11e586f3e15407b9eb9e9e32f79460a3be1bd4c8e046db8488f754cd1c1cc4fe4025a3f9bc9484e94eae0c7d273050f8e6548d12bc20
SSDEEP 6144:2Y7w4esWRaIsFwQpsUM0EIsZTY+GhH7gaWQ3org/pz:2Y7w4eOFQRVhFi70rg/pz
MD5 SHA1 SHA512 SSDEEP

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2Sj9142.exe

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2Sj9142.exe
Size 37KB
SHA256 260784b1afd8b819cb6ccb91f01090942375e527abdc060dd835992d88c04161
MD5 b938034561ab089d7047093d46deea8f
SHA1 d778c32cc46be09b107fa47cf3505ba5b748853d
SHA512 4909585c112fba3575e07428679fd7add07453e11169f33922faca2012d8e8fa6dfb763d991c68d3b4bbc6e78b6f37d2380c502daada325d73c7fff6c647769b
SSDEEP 768:hVrHUoFKUKy9Lxq0qjOwL7Vb8y0/PkbL:hVzUGqJZ8
MD5 SHA1 SHA512 SSDEEP

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memory/3228-7-0x0000000000400000-0x0000000000433000-memory.dmp

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memory/3228-11-0x0000000000400000-0x0000000000433000-memory.dmp

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memory/3228-8-0x0000000000400000-0x0000000000433000-memory.dmp

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memory/3228-9-0x0000000000400000-0x0000000000433000-memory.dmp

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memory/4416-15-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/4416-16-0x0000000000400000-0x000000000040B000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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