mystic | fb68898fc1ee1968d2f438649408cbb8854551c7efa6458a5175c462f02fda63

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 18:50

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General

Target

a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exe
Size

831KB
MD5

85e4a0f5a6136ee4873a53af1f693ed0
SHA1

c8295b1ef666acdb88a5e320b5a1d70eeb17d96b
SHA256

a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d
SHA512

cccfff50a1c9736573e80e7d66991930ffd0a607441e2bba89a61a7e5860d31494475387068895ed0f42d05251ece93f599f78ef325c62db1c04170099243c7c
SSDEEP

12288:wMrNy90oQfovlCb2GmvXKcOr1+JTWZx2LufAKuBG/Nw8SjKgpJlGRqMul0CX/Qmd:tyPQfoIO6cxWZxuBHvb+qMuJPSzk7

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2ZQ3937.exe	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
SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Executes dropped EXE 4 IoCs

Processes:

OK8oV32.exe1LI96Cu3.exe2ZQ3937.exe3kj59GC.exe

pid process

4600 OK8oV32.exe
2460 1LI96Cu3.exe
1708 2ZQ3937.exe
2720 3kj59GC.exe

pid	process
4600	OK8oV32.exe
2460	1LI96Cu3.exe
1708	2ZQ3937.exe
2720	3kj59GC.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exeOK8oV32.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\\\""	a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.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\\\""	OK8oV32.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

1LI96Cu3.exe3kj59GC.exe

description	pid	process	target process
PID 2460 set thread context of 852	2460	1LI96Cu3.exe	AppLaunch.exe
PID 2720 set thread context of 2384	2720	3kj59GC.exe	AppLaunch.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

Processes:

AppLaunch.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	AppLaunch.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

AppLaunch.exe

pid process

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

Processes:

AppLaunch.exe

description pid process

Token: SeDebugPrivilege 852 AppLaunch.exe

pid	process
852	AppLaunch.exe
852	AppLaunch.exe

description	pid	process
Token: SeDebugPrivilege	852	AppLaunch.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exeOK8oV32.exe1LI96Cu3.exe3kj59GC.exe

description	pid	process	target process
PID 4776 wrote to memory of 4600	4776	a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exe	OK8oV32.exe
PID 4776 wrote to memory of 4600	4776	a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exe	OK8oV32.exe
PID 4776 wrote to memory of 4600	4776	a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exe	OK8oV32.exe
PID 4600 wrote to memory of 2460	4600	OK8oV32.exe	1LI96Cu3.exe
PID 4600 wrote to memory of 2460	4600	OK8oV32.exe	1LI96Cu3.exe
PID 4600 wrote to memory of 2460	4600	OK8oV32.exe	1LI96Cu3.exe
PID 2460 wrote to memory of 852	2460	1LI96Cu3.exe	AppLaunch.exe
PID 2460 wrote to memory of 852	2460	1LI96Cu3.exe	AppLaunch.exe
PID 2460 wrote to memory of 852	2460	1LI96Cu3.exe	AppLaunch.exe
PID 2460 wrote to memory of 852	2460	1LI96Cu3.exe	AppLaunch.exe
PID 2460 wrote to memory of 852	2460	1LI96Cu3.exe	AppLaunch.exe
PID 2460 wrote to memory of 852	2460	1LI96Cu3.exe	AppLaunch.exe
PID 2460 wrote to memory of 852	2460	1LI96Cu3.exe	AppLaunch.exe
PID 2460 wrote to memory of 852	2460	1LI96Cu3.exe	AppLaunch.exe
PID 4600 wrote to memory of 1708	4600	OK8oV32.exe	2ZQ3937.exe
PID 4600 wrote to memory of 1708	4600	OK8oV32.exe	2ZQ3937.exe
PID 4600 wrote to memory of 1708	4600	OK8oV32.exe	2ZQ3937.exe
PID 4776 wrote to memory of 2720	4776	a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exe	3kj59GC.exe
PID 4776 wrote to memory of 2720	4776	a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exe	3kj59GC.exe
PID 4776 wrote to memory of 2720	4776	a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exe	3kj59GC.exe
PID 2720 wrote to memory of 2384	2720	3kj59GC.exe	AppLaunch.exe
PID 2720 wrote to memory of 2384	2720	3kj59GC.exe	AppLaunch.exe
PID 2720 wrote to memory of 2384	2720	3kj59GC.exe	AppLaunch.exe
PID 2720 wrote to memory of 2384	2720	3kj59GC.exe	AppLaunch.exe
PID 2720 wrote to memory of 2384	2720	3kj59GC.exe	AppLaunch.exe
PID 2720 wrote to memory of 2384	2720	3kj59GC.exe	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exe
"C:\Users\Admin\AppData\Local\Temp\a277894fe9048cd5fca86a41cd15d3ca798f15ec412ab35d84f136d39597b97d.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4776

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\OK8oV32.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\OK8oV32.exe
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4600

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1LI96Cu3.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1LI96Cu3.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2460

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:852

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2ZQ3937.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2ZQ3937.exe
3⤵
- Executes dropped EXE
PID:1708

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3kj59GC.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3kj59GC.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2720

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
3⤵
- Checks SCSI registry key(s)
PID:2384

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\3kj59GC.exe

Filesize
916KB

MD5
7bd7a6ca99c240a8f965694db9779220

SHA1
a4b22dd580b07c487c96e5889c272c8ce966f6d8

SHA256
2cba59d0e93c789487237caefe4701ddafed3f03a507276006965f63a5b17763

SHA512
37fbe01fe87017e69200bb9bb521ee6d0bf7fb410dbb6015a914e392170b16afbb17121e0f3bc38fabc3b6f4e337cde802def340124c1f9b1c1c72f59440f714

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\OK8oV32.exe

Filesize
464KB

MD5
00d2e192feaff9eaca0ec3c12f0a54f9

SHA1
9a6af5c7fa6a09c1510247fe4091d3c418f4d0fb

SHA256
96ce06b368c27ec0be775933dad4b108745aeec3e6af2dc16cdb891999f3066e

SHA512
694996933f02137531d01c9b16c7fb0240250f42ea06c9e7a61210b54afbd7aa02a865007825a6414bc029259b3c8ec1d7a2f9a33b529024c7216aa954ff3493

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1LI96Cu3.exe

Filesize
894KB

MD5
482c2daaa7250f2f2349259f7b6b09c3

SHA1
1313bc91e68a021c138ecf958db84c1d5b844895

SHA256
44caf6ae6a43d1d4c73ba84983921d506f45dc226a311a5e307e94132322e446

SHA512
676663ccddf48938b1b99632359978ef8847e7ed186c60c5b12b0f04040452fa9ece35b9f252768b49fce37e920d078c594bd1ea14f8d3ea0e10191959644076

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2ZQ3937.exe

Filesize
180KB

MD5
53e28e07671d832a65fbfe3aa38b6678

SHA1
6f9ea0ed8109030511c2c09c848f66bd0d16d1e1

SHA256
5c59db3277aefb761d4b814aaf5f5acd1fd1a0ea154dc565c78b082a3df4566e

SHA512
053f8048230583e741c34f6714c9684ed1312c064cd0c81d99f09e20192b7ddecb53c9c55e4aceac774315315be7e13de98f2cea4e5487f2d9e9dfa2ce3979c9

Download Submit
memory/852-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2384-21-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download