mystic | eafc2bfbeaeddb89f86da75f29f14435b745b919f0b99dd1d0d30b9d33efb415

Analysis

max time kernel
131s
max time network
105s
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 07:44

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General

Target

d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe
Size

421KB
MD5

cbdd721a570f358915a7aecafb93bef8
SHA1

3c849cac1c801fc0b88c54650592510a00c018a3
SHA256

d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590
SHA512

08fd1698d69f47a0d4024e240dd2d5f4c098ec2370813e96f18e682216ccb824185bcbc85f0cd85a2366de63a47a3eae3012c97610cde921be2267c27bd1393f
SSDEEP

12288:EMrLy90B+08qFUvuShyk/C0Dtolno1qQ/gBsne:nyD08qF3St/C025lQ/ve

Score

10^/10

mystic persistence stealer

Malware Config

Signatures

Detect Mystic stealer payload 4 IoCs

Processes:

resource	yara_rule
behavioral16/memory/376-20-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral16/memory/376-21-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral16/memory/376-22-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral16/memory/376-24-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family

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

.NET Reactor proctector 2 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

Processes:

resource	yara_rule
behavioral16/memory/1352-8-0x0000000002060000-0x0000000002080000-memory.dmp	net_reactor
behavioral16/memory/1352-11-0x00000000021C0000-0x00000000021DE000-memory.dmp	net_reactor

Executes dropped EXE 2 IoCs

Processes:

1oR09mV4.exe2YF2471.exe

pid process

1352 1oR09mV4.exe
3200 2YF2471.exe

pid	process
1352	1oR09mV4.exe
3200	2YF2471.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.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\\\""	d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2YF2471.exe

description pid process target process

PID 3200 set thread context of 376 3200 2YF2471.exe AppLaunch.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1420 3200 WerFault.exe 2YF2471.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

1oR09mV4.exe

description pid process

Token: SeDebugPrivilege 1352 1oR09mV4.exe

description	pid	process	target process
PID 3200 set thread context of 376	3200	2YF2471.exe	AppLaunch.exe

pid	pid_target	process	target process
1420	3200	WerFault.exe	2YF2471.exe

description	pid	process
Token: SeDebugPrivilege	1352	1oR09mV4.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe2YF2471.exe

description	pid	process	target process
PID 3368 wrote to memory of 1352	3368	d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe	1oR09mV4.exe
PID 3368 wrote to memory of 1352	3368	d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe	1oR09mV4.exe
PID 3368 wrote to memory of 1352	3368	d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe	1oR09mV4.exe
PID 3368 wrote to memory of 3200	3368	d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe	2YF2471.exe
PID 3368 wrote to memory of 3200	3368	d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe	2YF2471.exe
PID 3368 wrote to memory of 3200	3368	d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe	2YF2471.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe
PID 3200 wrote to memory of 376	3200	2YF2471.exe	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe
"C:\Users\Admin\AppData\Local\Temp\d30a3fe09c9a256105cd948f3eb2049778fcc4c34bdd05779bd39a344805a590.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3368

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1oR09mV4.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1oR09mV4.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1352

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2YF2471.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2YF2471.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3200

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
3⤵
PID:376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3200 -s 564
3⤵
- Program crash
PID:1420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3200 -ip 3200
1⤵
PID:4636

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\1oR09mV4.exe
Filesize
188KB

MD5
425e2a994509280a8c1e2812dfaad929

SHA1
4d5eff2fb3835b761e2516a873b537cbaacea1fe

SHA256
6f40f29ad16466785dfbe836dd375400949ff894e8aa03e2805ab1c1ac2d6f5a

SHA512
080a41e7926122e14b38901f2e1eb8100a08c5068a9a74099f060c5e601f056a66e607b4e006820276834bb01d913a3894de98e6d9ba62ce843df14058483aa0

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2YF2471.exe
Filesize
295KB

MD5
31e63ff215baaa1ef4772291d1b5e6f3

SHA1
85970e05389b5a9a8c5e70827ffd670012de9b54

SHA256
0206b068b399f2b7d64f2fa94fac0971a72f0bbc2902bde57fd78e1e0fc7fa14

SHA512
db2d4832d5dbcb757fae6955c714bbf204d1e49c3f2adaf6a99f3a41cd2ad63711744a42d59dc06005b6b530e58600f0228e7ccab7bb85d3f64f2f611a9a9846

Download Submit
memory/376-24-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/376-22-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/376-21-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/376-20-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1352-12-0x00000000050C0000-0x0000000005152000-memory.dmp

Filesize
584KB

Download
memory/1352-13-0x0000000074B10000-0x00000000752C0000-memory.dmp

Filesize
7.7MB

Download
memory/1352-14-0x0000000074B10000-0x00000000752C0000-memory.dmp

Filesize
7.7MB

Download
memory/1352-16-0x0000000074B10000-0x00000000752C0000-memory.dmp

Filesize
7.7MB

Download
memory/1352-11-0x00000000021C0000-0x00000000021DE000-memory.dmp

Filesize
120KB

Download
memory/1352-9-0x0000000074B10000-0x00000000752C0000-memory.dmp

Filesize
7.7MB

Download
memory/1352-10-0x0000000004B10000-0x00000000050B4000-memory.dmp

Filesize
5.6MB

Download
memory/1352-8-0x0000000002060000-0x0000000002080000-memory.dmp

Filesize
128KB

Download
memory/1352-7-0x0000000074B1E000-0x0000000074B1F000-memory.dmp

Filesize
4KB

Download