mystic | 45304735f707e4ffe910f4b6b034a26c94f7bc58a5bda60142f1ade5d11e96b3

Analysis

max time kernel
120s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
12-11-2023 22:20

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General

Target

NEAS.5c3561b275b18f337476d1dbe9833c80.exe
Size

438KB
MD5

5c3561b275b18f337476d1dbe9833c80
SHA1

7a74b2f5ccc7822b71126ce7b7877d15ff47227c
SHA256

45304735f707e4ffe910f4b6b034a26c94f7bc58a5bda60142f1ade5d11e96b3
SHA512

1a05ef2a2b07c57293a4c15c5c4a5e9f097ad046620415d19592cfbb18dcef70bcb94c433c0dcee490dc8f02f775340d7484eb85bfb2c7efd37dbcb596bdf9cc
SSDEEP

6144:Kmy+bnr+6p0yN90QE7iv89AY59FaIH0KiqhDbT15hDN1nWRqde4ALGM:+MrOy9028h9FfH0KiqhHT15b1WAXM

Score

10^/10

mystic evasion persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 4 IoCs

resource	yara_rule
behavioral1/memory/3192-14-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral1/memory/3192-15-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral1/memory/3192-16-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral1/memory/3192-20-0x0000000000400000-0x0000000000433000-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
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
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

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1114462139-3090196418-29517368-1000\Control Panel\International\Geo\Nation	7Xq6Zm21.exe

Executes dropped EXE 4 IoCs

pid	Process
4448	yw9Po24.exe
4068	1jJ43fQ4.exe
3556	6HI3ek7.exe
3436	7Xq6Zm21.exe

Adds Run key to start application 2 TTPs 2 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\\\""	NEAS.5c3561b275b18f337476d1dbe9833c80.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\\\""	yw9Po24.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4068 set thread context of 3192	4068	1jJ43fQ4.exe	93
PID 3556 set thread context of 2704	3556	6HI3ek7.exe	98

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4584	3192	WerFault.exe	93

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2704	AppLaunch.exe
2704	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2704	AppLaunch.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 4448	4324	NEAS.5c3561b275b18f337476d1dbe9833c80.exe	88
PID 4324 wrote to memory of 4448	4324	NEAS.5c3561b275b18f337476d1dbe9833c80.exe	88
PID 4324 wrote to memory of 4448	4324	NEAS.5c3561b275b18f337476d1dbe9833c80.exe	88
PID 4448 wrote to memory of 4068	4448	yw9Po24.exe	89
PID 4448 wrote to memory of 4068	4448	yw9Po24.exe	89
PID 4448 wrote to memory of 4068	4448	yw9Po24.exe	89
PID 4068 wrote to memory of 3700	4068	1jJ43fQ4.exe	92
PID 4068 wrote to memory of 3700	4068	1jJ43fQ4.exe	92
PID 4068 wrote to memory of 3700	4068	1jJ43fQ4.exe	92
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4068 wrote to memory of 3192	4068	1jJ43fQ4.exe	93
PID 4448 wrote to memory of 3556	4448	yw9Po24.exe	94
PID 4448 wrote to memory of 3556	4448	yw9Po24.exe	94
PID 4448 wrote to memory of 3556	4448	yw9Po24.exe	94
PID 3556 wrote to memory of 2704	3556	6HI3ek7.exe	98
PID 3556 wrote to memory of 2704	3556	6HI3ek7.exe	98
PID 3556 wrote to memory of 2704	3556	6HI3ek7.exe	98
PID 3556 wrote to memory of 2704	3556	6HI3ek7.exe	98
PID 3556 wrote to memory of 2704	3556	6HI3ek7.exe	98
PID 3556 wrote to memory of 2704	3556	6HI3ek7.exe	98
PID 3556 wrote to memory of 2704	3556	6HI3ek7.exe	98
PID 3556 wrote to memory of 2704	3556	6HI3ek7.exe	98
PID 4324 wrote to memory of 3436	4324	NEAS.5c3561b275b18f337476d1dbe9833c80.exe	100
PID 4324 wrote to memory of 3436	4324	NEAS.5c3561b275b18f337476d1dbe9833c80.exe	100
PID 4324 wrote to memory of 3436	4324	NEAS.5c3561b275b18f337476d1dbe9833c80.exe	100
PID 3436 wrote to memory of 4600	3436	7Xq6Zm21.exe	104
PID 3436 wrote to memory of 4600	3436	7Xq6Zm21.exe	104
PID 3436 wrote to memory of 4600	3436	7Xq6Zm21.exe	104

C:\Users\Admin\AppData\Local\Temp\NEAS.5c3561b275b18f337476d1dbe9833c80.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.5c3561b275b18f337476d1dbe9833c80.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4324
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\yw9Po24.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\yw9Po24.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4448
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1jJ43fQ4.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1jJ43fQ4.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4068
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:3700
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:3192
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3192 -s 540
        5⤵
        Program crash
        
        PID:4584
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\6HI3ek7.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\6HI3ek7.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3556
  - - 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:2704
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\7Xq6Zm21.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\7Xq6Zm21.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3436
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\is64.bat" "
    3⤵
    PID:4600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3192 -ip 3192
1⤵
PID:564

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\7Xq6Zm21.exe

Filesize
73KB

MD5
e239ed8997e44aae5baf23eb842e26ed

SHA1
94c4b93d5be8d8f5e1213e9b1661780c5bef9b75

SHA256
90bd6afaefec5b0280274c379e86056a4a1ebb990ad081957adc7f78d22c15a7

SHA512
8216fde50e746c360f4ace5f5659fc5354fa869b81b652027b9c24cb230e1dbee7ff7817076932a767d8e5eee3a7f1845f93928b8ddb28103bfdba6c834b324b

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\7Xq6Zm21.exe

Filesize
73KB

MD5
e239ed8997e44aae5baf23eb842e26ed

SHA1
94c4b93d5be8d8f5e1213e9b1661780c5bef9b75

SHA256
90bd6afaefec5b0280274c379e86056a4a1ebb990ad081957adc7f78d22c15a7

SHA512
8216fde50e746c360f4ace5f5659fc5354fa869b81b652027b9c24cb230e1dbee7ff7817076932a767d8e5eee3a7f1845f93928b8ddb28103bfdba6c834b324b

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\yw9Po24.exe

Filesize
316KB

MD5
780f4e442b77f55f980b37eed4189d20

SHA1
fc8539ecd837a2693e34e21333598887730238c2

SHA256
93f5da209930641a89a89e00632f83730bc08a3837f9804e7bc8b68f3a336f3e

SHA512
fd799cf9e2a094cc3cca9cb962987cabc2f7b9f354ad95c1783a188fe437893d99da74273aadc45de2e4000d96be84a7f4ab55a83842cbe392a39d0b9b328a2e

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\yw9Po24.exe

Filesize
316KB

MD5
780f4e442b77f55f980b37eed4189d20

SHA1
fc8539ecd837a2693e34e21333598887730238c2

SHA256
93f5da209930641a89a89e00632f83730bc08a3837f9804e7bc8b68f3a336f3e

SHA512
fd799cf9e2a094cc3cca9cb962987cabc2f7b9f354ad95c1783a188fe437893d99da74273aadc45de2e4000d96be84a7f4ab55a83842cbe392a39d0b9b328a2e

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1jJ43fQ4.exe

Filesize
300KB

MD5
5127226ce800eb933c216c3604b8b25b

SHA1
e44e9b1fd21dd9786d5fd7775ef6c56212668889

SHA256
56449e8916bf748bc2ddc80643099bb78ddc62058ffaa635e1d191430e3b74d9

SHA512
59fc8b3c4480d8454821a62ce4508cbda14ea4b2669d5c0310a216726a561d35ff3827d33672281a79a9fc9153ffcedcc57f441b3930dc618cee8ebfb3f1d759

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1jJ43fQ4.exe

Filesize
300KB

MD5
5127226ce800eb933c216c3604b8b25b

SHA1
e44e9b1fd21dd9786d5fd7775ef6c56212668889

SHA256
56449e8916bf748bc2ddc80643099bb78ddc62058ffaa635e1d191430e3b74d9

SHA512
59fc8b3c4480d8454821a62ce4508cbda14ea4b2669d5c0310a216726a561d35ff3827d33672281a79a9fc9153ffcedcc57f441b3930dc618cee8ebfb3f1d759

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\6HI3ek7.exe

Filesize
131KB

MD5
bfd1838953f5a5e8b03ee2f62bae832f

SHA1
ed58b651019e4153257a72078bf9de9ba9cae77a

SHA256
5e5d8661e59be3c2396850f99fa31aae01c82df752eddc078259b63276b86b6c

SHA512
d663f2c60ce6705923a3d37c597837ac5243dc1045e585bd91c91f7368862f476cd9acdd08eb02cc586e3f078b5dac8988455e1e4802807554cbbe3e8381cd3c

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\6HI3ek7.exe

Filesize
131KB

MD5
bfd1838953f5a5e8b03ee2f62bae832f

SHA1
ed58b651019e4153257a72078bf9de9ba9cae77a

SHA256
5e5d8661e59be3c2396850f99fa31aae01c82df752eddc078259b63276b86b6c

SHA512
d663f2c60ce6705923a3d37c597837ac5243dc1045e585bd91c91f7368862f476cd9acdd08eb02cc586e3f078b5dac8988455e1e4802807554cbbe3e8381cd3c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is64.bat

Filesize
181B

MD5
225edee1d46e0a80610db26b275d72fb

SHA1
ce206abf11aaf19278b72f5021cc64b1b427b7e8

SHA256
e1befb57d724c9dc760cf42d7e0609212b22faeb2dc0c3ffe2fbd7134ff69559

SHA512
4f01a2a248a1322cb690b7395b818d2780e46f4884e59f1ab96125d642b6358eea97c7fad6023ef17209b218daa9c88d15ea2b92f124ecb8434c0c7b4a710504

Download Submit
memory/2704-22-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2704-26-0x0000000073A00000-0x00000000741B0000-memory.dmp

Filesize
7.7MB

Download
memory/2704-36-0x0000000073A00000-0x00000000741B0000-memory.dmp

Filesize
7.7MB

Download
memory/3192-14-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3192-20-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3192-16-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3192-15-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download