mystic | 8f7ecfcea350d8e91e6bb9083833f37b57aa78d15022b68c407055e2463bd982

Analysis

max time kernel
145s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 19:12

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General

Target

f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe
Size

571KB
MD5

9333ac50afdfd0f4841ce14109290cb0
SHA1

4b87ae7a51fd402f57eec512302336848dda5efc
SHA256

f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d
SHA512

8a1ac62aaf5531a95a1cbb2496b60b86c50e7b406483db0fcfe35ea910c2a5a726de4374507d8aee76eb07d67bd8b6d188d56c866c2657b9c4d71835b2e99c03
SSDEEP

12288:3MrPy90PkK06Ds5RF6ImOxhgnLHNKLvFtzNyd:UyKp06Ds5RiOb3HzId

Score

10^/10

mystic redline kukish infostealer persistence stealer

Malware Config

Extracted

Family

redline

Botnet

kukish

77.91.124.55:19071

Signatures

Detect Mystic stealer payload 4 IoCs

Processes:

resource	yara_rule
behavioral20/memory/1596-7-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral20/memory/1596-9-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral20/memory/1596-8-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral20/memory/1596-11-0x0000000000400000-0x0000000000432000-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\2Oz172KQ.exe	family_redline
behavioral20/memory/4900-16-0x0000000000E20000-0x0000000000E5E000-memory.dmp	family_redline

Executes dropped EXE 2 IoCs

Processes:

1hU59RW6.exe2Oz172KQ.exe

pid process

4828 1hU59RW6.exe
4900 2Oz172KQ.exe

pid	process
4828	1hU59RW6.exe
4900	2Oz172KQ.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.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\\\""	f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

1hU59RW6.exe

description pid process target process

PID 4828 set thread context of 1596 4828 1hU59RW6.exe AppLaunch.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4736 1596 WerFault.exe AppLaunch.exe

description	pid	process	target process
PID 4828 set thread context of 1596	4828	1hU59RW6.exe	AppLaunch.exe

pid	pid_target	process	target process
4736	1596	WerFault.exe	AppLaunch.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe1hU59RW6.exe

description	pid	process	target process
PID 4728 wrote to memory of 4828	4728	f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe	1hU59RW6.exe
PID 4728 wrote to memory of 4828	4728	f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe	1hU59RW6.exe
PID 4728 wrote to memory of 4828	4728	f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe	1hU59RW6.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4828 wrote to memory of 1596	4828	1hU59RW6.exe	AppLaunch.exe
PID 4728 wrote to memory of 4900	4728	f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe	2Oz172KQ.exe
PID 4728 wrote to memory of 4900	4728	f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe	2Oz172KQ.exe
PID 4728 wrote to memory of 4900	4728	f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe	2Oz172KQ.exe

C:\Users\Admin\AppData\Local\Temp\f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe
"C:\Users\Admin\AppData\Local\Temp\f921df4c23777a797ffd956196cd2ea4805eaf3eefcc839de781c7e6af836f0d.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4728

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1hU59RW6.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1hU59RW6.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4828

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
3⤵
PID:1596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 540
4⤵
- Program crash
PID:4736

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2Oz172KQ.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2Oz172KQ.exe
2⤵
- Executes dropped EXE
PID:4900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1596 -ip 1596
1⤵
PID:4160

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\1hU59RW6.exe
Filesize
1.1MB

MD5
0c332b116b3b9c3e373137d227f9274b

SHA1
bd1d8bdb2d66ae6f322515a322a012311a8932c7

SHA256
8df8445ea37afc6e4bb34bb9a3ddc0445cc6621f8a353829f63a9864411202c8

SHA512
925e9e0e38f80f3279f7e4cd411c3d9835df8964868b6ac40348cfadbfc64239054a81a1449b9985482cf847ca2f68d3743bd83323af7bd551ecf11b86a18abe

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2Oz172KQ.exe
Filesize
223KB

MD5
df52490a04237bd429a7a0949f030ffd

SHA1
d53f765cee7c2245f799b29a829abdc5a75b4a7c

SHA256
f17e56d3dda97d462609b3e69cbf0e40961e077862e9b820d802a2e6121de82f

SHA512
5fccb362059338ad0b4eeb20fe551d8e85463a6e6e136612cb37b44a983a546e0cb4febb2b0ba105795624edd2fdcaee46ba41238d2bd3fa81bfcaf3ce5ca94a

Download Submit
memory/1596-7-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1596-9-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1596-8-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1596-11-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/4900-17-0x0000000008290000-0x0000000008834000-memory.dmp

Filesize
5.6MB

Download
memory/4900-16-0x0000000000E20000-0x0000000000E5E000-memory.dmp

Filesize
248KB

Download
memory/4900-15-0x000000007402E000-0x000000007402F000-memory.dmp

Filesize
4KB

Download
memory/4900-18-0x0000000007D80000-0x0000000007E12000-memory.dmp

Filesize
584KB

Download
memory/4900-19-0x0000000003170000-0x000000000317A000-memory.dmp

Filesize
40KB

Download
memory/4900-20-0x0000000074020000-0x00000000747D0000-memory.dmp

Filesize
7.7MB

Download
memory/4900-21-0x0000000008E60000-0x0000000009478000-memory.dmp

Filesize
6.1MB

Download
memory/4900-22-0x0000000008110000-0x000000000821A000-memory.dmp

Filesize
1.0MB

Download
memory/4900-23-0x0000000007F10000-0x0000000007F22000-memory.dmp

Filesize
72KB

Download
memory/4900-24-0x0000000007F70000-0x0000000007FAC000-memory.dmp

Filesize
240KB

Download
memory/4900-25-0x0000000008000000-0x000000000804C000-memory.dmp

Filesize
304KB

Download
memory/4900-26-0x000000007402E000-0x000000007402F000-memory.dmp

Filesize
4KB

Download
memory/4900-27-0x0000000074020000-0x00000000747D0000-memory.dmp

Filesize
7.7MB

Download