mystic | 3c91163ea40ad7e35bac48ded16235cfe9003c914f570e27b4e2d7b3c9c46c05

Analysis

max time kernel
148s
max time network
131s
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 19:19

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General

Target

3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe
Size

598KB
MD5

ef05c4af3fa8c48fc1a3c918a044338a
SHA1

3b4169fb61e0bdfb2282c39ba798e74ff906bb44
SHA256

3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e
SHA512

5263ffe286c38403467462f3d2a2ce77b0a7ad70a7bd01c77b859dbe47e069bca8b64609a08bfa7917e834644714b86b46a5ee43e4daaee254102169bac43cd5
SSDEEP

12288:MMrdy90Gun5B6oTeRNKHPWbOk9fYWpGxkkY5kkfn3mfyp9TIbIpEfEdDs0:ByeB6oTebsRcfYyGxkX3jpbemg0

Score

10^/10

mystic evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 4 IoCs

resource	yara_rule
behavioral4/memory/4556-47-0x0000000000400000-0x0000000000428000-memory.dmp	mystic_family
behavioral4/memory/4556-48-0x0000000000400000-0x0000000000428000-memory.dmp	mystic_family
behavioral4/memory/4556-49-0x0000000000400000-0x0000000000428000-memory.dmp	mystic_family
behavioral4/memory/4556-51-0x0000000000400000-0x0000000000428000-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"	1vN75AF1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	1vN75AF1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	1vN75AF1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	1vN75AF1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	1vN75AF1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	1vN75AF1.exe

Mystic
Mystic is an infostealer written in C++.
stealer mystic

Executes dropped EXE 2 IoCs

pid	Process
4592	1vN75AF1.exe
1828	2GJ7354.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	1vN75AF1.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	1vN75AF1.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\\\""	3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1828 set thread context of 4556	1828	2GJ7354.exe	103

Launches sc.exe 1 IoCs

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

pid	Process
2244	sc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2884	1828	WerFault.exe	101

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4592	1vN75AF1.exe
4592	1vN75AF1.exe
4592	1vN75AF1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4592	1vN75AF1.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1128 wrote to memory of 4592	1128	3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe	90
PID 1128 wrote to memory of 4592	1128	3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe	90
PID 1128 wrote to memory of 4592	1128	3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe	90
PID 1128 wrote to memory of 1828	1128	3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe	101
PID 1128 wrote to memory of 1828	1128	3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe	101
PID 1128 wrote to memory of 1828	1128	3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe	101
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103
PID 1828 wrote to memory of 4556	1828	2GJ7354.exe	103

C:\Users\Admin\AppData\Local\Temp\3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe
"C:\Users\Admin\AppData\Local\Temp\3e348a855b33640bb6aa790859bfa7dbd1b740b53c1de343d38127d859c8f54e.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1128
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1vN75AF1.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1vN75AF1.exe
  2⤵
  - Modifies Windows Defender Real-time Protection settings
  - Executes dropped EXE
  - Windows security modification
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4592
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2GJ7354.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2GJ7354.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1828
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:4556
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1828 -s 596
    3⤵
    - Program crash
    PID:2884

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=3148,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=4256 /prefetch:8
1⤵
PID:4696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1828 -ip 1828
1⤵
PID:2800

C:\Windows\system32\sc.exe
C:\Windows\system32\sc.exe start wuauserv
1⤵
- Launches sc.exe
PID:2244

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1vN75AF1.exe

Filesize
192KB

MD5
8904f85abd522c7d0cb5789d9583ccff

SHA1
5b34d8595b37c9e1fb9682b06dc5228efe07f0c6

SHA256
7624b62fe97c8e370c82bc86f69c2f627328e701ce1f3d9bed92a1e5fe11fd7f

SHA512
04dd0c4e612b6287af6a655425085d687538d756dcd639ecb6c62bcdafddde52c56ae305a6240ee1329a95d9cc59dee6de5000d273a5a560ad1adc3284e00e12

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2GJ7354.exe

Filesize
1.4MB

MD5
320ee3ce5dc29e83cfd0ffef376e59b0

SHA1
b705ad95ea4da10c4977b5120e4daaf3806b49ab

SHA256
c086478074272eb7d46878d268455dd3505011845cc8115a483ff1bacacd153c

SHA512
529333fcc8ff4afd19f4d2515cd3194b4b68404fc51da128118afdc640e22dbda2e494fbf262467b5156d85f2e2a26a4e8f222286ca57c7f8c04620fe418a8df

Download Submit
memory/4556-51-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4556-49-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4556-48-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4556-47-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4592-31-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-23-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-25-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-35-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-41-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-39-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-37-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-33-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-12-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4592-29-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-27-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-13-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4592-21-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-19-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-17-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-15-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-14-0x0000000002650000-0x0000000002666000-memory.dmp

Filesize
88KB

Download
memory/4592-43-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4592-11-0x0000000002650000-0x000000000266C000-memory.dmp

Filesize
112KB

Download
memory/4592-10-0x00000000049E0000-0x0000000004F84000-memory.dmp

Filesize
5.6MB

Download
memory/4592-9-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4592-8-0x0000000002470000-0x000000000248E000-memory.dmp

Filesize
120KB

Download
memory/4592-7-0x000000007486E000-0x000000007486F000-memory.dmp

Filesize
4KB

Download