mystic | ce9955c91d6a5f9e211ecb80cc51d8025eccfe4e1398947c094c94a6e2904f18

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 09:04

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General

Target

f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe
Size

436KB
MD5

d213e2080232807a50a68cf06de48dd0
SHA1

a09601da7b45676d1a3cb07d767e093399d14b60
SHA256

f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b
SHA512

03867c11eed2d693fc1cd81da1c8c29b74bb6c45ff4f608ceb5c411ef8d9ba6e8fbad68a17bd4558c2055aa8258e1b39e24daca8d18558912ae0d6e7f16673d2
SSDEEP

12288:DMrUy90Y4kZKi2MwPlfAbMdllZ+jYIvK4+IA:3yNnKi2NPZPcsIy4rA

Score

10^/10

mystic redline kukish infostealer persistence stealer

Malware Config

Extracted

Family

mystic

http://5.42.92.211/

Extracted

Family

redline

Botnet

kukish

77.91.124.55:19071

Signatures

Detect Mystic stealer payload 4 IoCs

Processes:

resource	yara_rule
behavioral17/memory/4540-7-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral17/memory/4540-11-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral17/memory/4540-10-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral17/memory/4540-8-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family

Mystic
Mystic is an infostealer written in C++.
stealer mystic
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2KF781qu.exe	family_redline
behavioral17/memory/4624-16-0x0000000000CE0000-0x0000000000D1E000-memory.dmp	family_redline

Executes dropped EXE 2 IoCs

Processes:

1Gt13zT6.exe2KF781qu.exe

pid process

880 1Gt13zT6.exe
4624 2KF781qu.exe

pid	process
880	1Gt13zT6.exe
4624	2KF781qu.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.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\\\""	f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

1Gt13zT6.exe

description pid process target process

PID 880 set thread context of 4540 880 1Gt13zT6.exe AppLaunch.exe
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

1152 4540 WerFault.exe AppLaunch.exe
5004 880 WerFault.exe 1Gt13zT6.exe

description	pid	process	target process
PID 880 set thread context of 4540	880	1Gt13zT6.exe	AppLaunch.exe

pid	pid_target	process	target process
1152	4540	WerFault.exe	AppLaunch.exe
5004	880	WerFault.exe	1Gt13zT6.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe1Gt13zT6.exe

description	pid	process	target process
PID 4036 wrote to memory of 880	4036	f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe	1Gt13zT6.exe
PID 4036 wrote to memory of 880	4036	f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe	1Gt13zT6.exe
PID 4036 wrote to memory of 880	4036	f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe	1Gt13zT6.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 880 wrote to memory of 4540	880	1Gt13zT6.exe	AppLaunch.exe
PID 4036 wrote to memory of 4624	4036	f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe	2KF781qu.exe
PID 4036 wrote to memory of 4624	4036	f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe	2KF781qu.exe
PID 4036 wrote to memory of 4624	4036	f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe	2KF781qu.exe

C:\Users\Admin\AppData\Local\Temp\f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe
"C:\Users\Admin\AppData\Local\Temp\f3b64421133b7924d58e6aecea4508423a6b611f1b55b129f7ac031c0458b73b.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4036

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1Gt13zT6.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1Gt13zT6.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:880

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
3⤵
PID:4540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4540 -s 540
4⤵
- Program crash
PID:1152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 880 -s 152
3⤵
- Program crash
PID:5004

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2KF781qu.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2KF781qu.exe
2⤵
- Executes dropped EXE
PID:4624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4540 -ip 4540
1⤵
PID:4344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 880 -ip 880
1⤵
PID:3568

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1Gt13zT6.exe
Filesize
407KB

MD5
c4f75f4b0ff938695609a2ea3e7537e8

SHA1
0a86bcdf06134008d592a425ce9f34f66120eb18

SHA256
0968244472af3762bb29e125b6b66d6ffca7f0a039834f1436dd69c2c2e468ff

SHA512
a3e8e23e12434cab015fe95ed5dbb0b420dd0c4a36a61e314d90382084d77231b67c16aaef6e4b630ffb901380d263402807ea74455352067a86e4eedbfe7f3f

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2KF781qu.exe
Filesize
221KB

MD5
2518b6c23b3dbfab5ef7e0a9f51a8bc3

SHA1
2289c03e2654136a64aa1b8495c10137a37ffd39

SHA256
cb6a55e7d2acfa3bab6c6f901e19a7be1a791765683755c2d0775c76104e6ecc

SHA512
d31db3ede2e792f5c9732ccaa2b2345e87fec68ad859c1035ffae255d0abd4fa5559bb7494982b5c191e7dbc6f6478c2a054b323d9e63cb922a1ac1977592813

Download Submit
memory/4540-7-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4540-11-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4540-10-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4540-8-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4624-17-0x00000000080C0000-0x0000000008664000-memory.dmp

Filesize
5.6MB

Download
memory/4624-16-0x0000000000CE0000-0x0000000000D1E000-memory.dmp

Filesize
248KB

Download
memory/4624-15-0x0000000074BBE000-0x0000000074BBF000-memory.dmp

Filesize
4KB

Download
memory/4624-18-0x0000000007BF0000-0x0000000007C82000-memory.dmp

Filesize
584KB

Download
memory/4624-19-0x0000000003030000-0x000000000303A000-memory.dmp

Filesize
40KB

Download
memory/4624-20-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/4624-21-0x0000000008C90000-0x00000000092A8000-memory.dmp

Filesize
6.1MB

Download
memory/4624-22-0x0000000008670000-0x000000000877A000-memory.dmp

Filesize
1.0MB

Download
memory/4624-23-0x0000000007CD0000-0x0000000007CE2000-memory.dmp

Filesize
72KB

Download
memory/4624-24-0x0000000007E40000-0x0000000007E7C000-memory.dmp

Filesize
240KB

Download
memory/4624-25-0x0000000007ED0000-0x0000000007F1C000-memory.dmp

Filesize
304KB

Download
memory/4624-26-0x0000000074BBE000-0x0000000074BBF000-memory.dmp

Filesize
4KB

Download
memory/4624-27-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download