mystic | eaa5bc31c0595e067ec5d2de5b893a4548157c59407cea5d21115d222c085544

General

Target

8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe
Size

523KB
MD5

dcee3487134de31384cc480650d0b872
SHA1

728aac232b591c08d2a0a727a5024afdb17f3b56
SHA256

8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9
SHA512

dd0751578f48b5a2e6931c31865c235f464fb3d6fe4bdbd8389ab9d8429b0ffb69205773b276dc930ab1dc672fe7ed724559bdb4a1896ba26bc9cd3b74570399
SSDEEP

12288:4Mr8y900yOk63JeBswLMA9Kyzr7Hx/XupZF7:UyMx0eB0Ryzr7Hx/XupZF7

Score

10^/10

mystic evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 4 IoCs

resource	yara_rule
behavioral1/memory/2004-12-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral1/memory/2004-13-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral1/memory/2004-14-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral1/memory/2004-16-0x0000000000400000-0x0000000000434000-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\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
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

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

Executes dropped EXE 2 IoCs

pid	Process
4784	1xs28ee6.exe
4504	2pm7744.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\\\""	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4784 set thread context of 4152	4784	1xs28ee6.exe	90
PID 4504 set thread context of 2004	4504	2pm7744.exe	93

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3568	2004	WerFault.exe	93

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4152	AppLaunch.exe
4152	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4152	AppLaunch.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 4784	4052	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	89
PID 4052 wrote to memory of 4784	4052	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	89
PID 4052 wrote to memory of 4784	4052	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	89
PID 4784 wrote to memory of 4152	4784	1xs28ee6.exe	90
PID 4784 wrote to memory of 4152	4784	1xs28ee6.exe	90
PID 4784 wrote to memory of 4152	4784	1xs28ee6.exe	90
PID 4784 wrote to memory of 4152	4784	1xs28ee6.exe	90
PID 4784 wrote to memory of 4152	4784	1xs28ee6.exe	90
PID 4784 wrote to memory of 4152	4784	1xs28ee6.exe	90
PID 4784 wrote to memory of 4152	4784	1xs28ee6.exe	90
PID 4784 wrote to memory of 4152	4784	1xs28ee6.exe	90
PID 4052 wrote to memory of 4504	4052	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	91
PID 4052 wrote to memory of 4504	4052	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	91
PID 4052 wrote to memory of 4504	4052	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	91
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93
PID 4504 wrote to memory of 2004	4504	2pm7744.exe	93

C:\Users\Admin\AppData\Local\Temp\8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe
"C:\Users\Admin\AppData\Local\Temp\8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1xs28ee6.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1xs28ee6.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4784
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    - Modifies Windows Defender Real-time Protection settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4152
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2pm7744.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2pm7744.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4504
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:2004
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2004 -s 540
      4⤵
      Program crash
      PID:3568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2004 -ip 2004
1⤵
PID:3172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1xs28ee6.exe

Filesize
878KB

MD5
339ea0b5985189bed9df55b41d322bfd

SHA1
1bfaf3fe436a2c778d3274fc2d729f7a706fca47

SHA256
c4bd0604ca387c82df1418215f3a408bc3e2877531c2f355f6df8569b7de2b49

SHA512
3f1cce7155e0fca30cc9469c0566e40c43f28df6445fc284521283da0aa9f01c67b3fc026a3b9841f1630f677fa8326dba69171d594013d601beb50c68ed3f87

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2pm7744.exe

Filesize
1.1MB

MD5
6c0733d56c61c694254f33440224ade4

SHA1
45c9a26fbe1d7d1221655ee0ea85a2e8a138eab6

SHA256
3a8f1997f1e756b408fa3e20bfd1e3fccdcc20e6d223999b253c97457224feea

SHA512
2e1436edfb5b74e2a0dfb10e1da9e8c38f435e046aae5a7e418d328d52c01b4000b2e15fcbefbf6969750c638000bc4b63afc49ee15df43db30e093af5ded95d

Download Submit
memory/2004-12-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2004-13-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2004-14-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2004-16-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4152-7-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4152-11-0x0000000074290000-0x0000000074A40000-memory.dmp

Filesize
7.7MB

Download
memory/4152-18-0x0000000074290000-0x0000000074A40000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads