mystic | 679ac8aaa163843db98bae893e5fdc66d6604f14d33af92b78d0c71a29635409

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

Processes:

resource	yara_rule
behavioral1/memory/3372-12-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral1/memory/3372-13-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral1/memory/3372-14-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral1/memory/3372-16-0x0000000000400000-0x0000000000434000-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

Processes:

AppLaunch.exe

description	ioc	process
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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	AppLaunch.exe

Mystic
Mystic is an infostealer written in C++.
stealer mystic
Executes dropped EXE 2 IoCs

Processes:

1xs28ee6.exe2pm7744.exe

pid process

2272 1xs28ee6.exe
224 2pm7744.exe

pid	process
2272	1xs28ee6.exe
224	2pm7744.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe

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

Processes:

1xs28ee6.exe2pm7744.exe

description	pid	process	target process
PID 2272 set thread context of 5068	2272	1xs28ee6.exe	AppLaunch.exe
PID 224 set thread context of 3372	224	2pm7744.exe	AppLaunch.exe

Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exe

pid process

3852 sc.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4016 3372 WerFault.exe AppLaunch.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

AppLaunch.exe

pid process

5068 AppLaunch.exe
5068 AppLaunch.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

AppLaunch.exe

description pid process

Token: SeDebugPrivilege 5068 AppLaunch.exe

pid	process
3852	sc.exe

pid	pid_target	process	target process
4016	3372	WerFault.exe	AppLaunch.exe

pid	process
5068	AppLaunch.exe
5068	AppLaunch.exe

description	pid	process
Token: SeDebugPrivilege	5068	AppLaunch.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe1xs28ee6.exe2pm7744.exe

description	pid	process	target process
PID 4816 wrote to memory of 2272	4816	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	1xs28ee6.exe
PID 4816 wrote to memory of 2272	4816	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	1xs28ee6.exe
PID 4816 wrote to memory of 2272	4816	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	1xs28ee6.exe
PID 2272 wrote to memory of 5068	2272	1xs28ee6.exe	AppLaunch.exe
PID 2272 wrote to memory of 5068	2272	1xs28ee6.exe	AppLaunch.exe
PID 2272 wrote to memory of 5068	2272	1xs28ee6.exe	AppLaunch.exe
PID 2272 wrote to memory of 5068	2272	1xs28ee6.exe	AppLaunch.exe
PID 2272 wrote to memory of 5068	2272	1xs28ee6.exe	AppLaunch.exe
PID 2272 wrote to memory of 5068	2272	1xs28ee6.exe	AppLaunch.exe
PID 2272 wrote to memory of 5068	2272	1xs28ee6.exe	AppLaunch.exe
PID 2272 wrote to memory of 5068	2272	1xs28ee6.exe	AppLaunch.exe
PID 4816 wrote to memory of 224	4816	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	2pm7744.exe
PID 4816 wrote to memory of 224	4816	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	2pm7744.exe
PID 4816 wrote to memory of 224	4816	8abe67f3fa19414604fbb2a1510012895dbf0e89c55c9ff8d1a156b868ee9bf9.exe	2pm7744.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe
PID 224 wrote to memory of 3372	224	2pm7744.exe	AppLaunch.exe

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:4816
- 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:2272
- - 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:5068
- 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:224
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:3372
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 544
      4⤵
      Program crash
      PID:4016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3372 -ip 3372
1⤵
PID:3968

C:\Windows\system32\sc.exe
C:\Windows\system32\sc.exe start wuauserv
1⤵
- Launches sc.exe
PID:3852

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/3372-12-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3372-13-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3372-14-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3372-16-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/5068-7-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/5068-11-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/5068-18-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads