mystic | 3767bd9b929fb47ae3b158c424044d32b3c87ffb6efc8eb109dc1df9f3d9b053

Analysis

max time kernel
149s
max time network
152s
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 08:20

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General

Target

c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe
Size

621KB
MD5

5835e56571d1086d311f1cc81646282b
SHA1

d4bf9d4e416a9fd826f011a36c972b9db270f4ba
SHA256

c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486
SHA512

020e026aa8a17275dbf73d03ad676582ef9413b580d5448d4582b06343e2370cea5f99ac0248ed8b4e43ce78cfea06cb5aad8373cc471095889f7f3330d10b97
SSDEEP

12288:1MrDy90Sk8UpyDuuSZum4/9WArLJFskN/L5BLSXAAyesaNU:6ya8gy9SArvsk1sAte5y

Score

10^/10

mystic persistence stealer

Malware Config

Signatures

Detect Mystic stealer payload 4 IoCs

Processes:

resource	yara_rule
behavioral15/memory/5112-20-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral15/memory/5112-22-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral15/memory/5112-21-0x0000000000400000-0x0000000000432000-memory.dmp	mystic_family
behavioral15/memory/5112-24-0x0000000000400000-0x0000000000432000-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
behavioral15/memory/2892-8-0x0000000002250000-0x0000000002270000-memory.dmp	net_reactor
behavioral15/memory/2892-11-0x0000000002550000-0x000000000256E000-memory.dmp	net_reactor

Executes dropped EXE 2 IoCs

Processes:

1lY00Rk2.exe2pU8899.exe

pid process

2892 1lY00Rk2.exe
5028 2pU8899.exe

pid	process
2892	1lY00Rk2.exe
5028	2pU8899.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.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\\\""	c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2pU8899.exe

description pid process target process

PID 5028 set thread context of 5112 5028 2pU8899.exe AppLaunch.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

1lY00Rk2.exe

description pid process

Token: SeDebugPrivilege 2892 1lY00Rk2.exe

description	pid	process	target process
PID 5028 set thread context of 5112	5028	2pU8899.exe	AppLaunch.exe

description	pid	process
Token: SeDebugPrivilege	2892	1lY00Rk2.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe2pU8899.exe

description	pid	process	target process
PID 4440 wrote to memory of 2892	4440	c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe	1lY00Rk2.exe
PID 4440 wrote to memory of 2892	4440	c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe	1lY00Rk2.exe
PID 4440 wrote to memory of 2892	4440	c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe	1lY00Rk2.exe
PID 4440 wrote to memory of 5028	4440	c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe	2pU8899.exe
PID 4440 wrote to memory of 5028	4440	c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe	2pU8899.exe
PID 4440 wrote to memory of 5028	4440	c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe	2pU8899.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe
PID 5028 wrote to memory of 5112	5028	2pU8899.exe	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe
"C:\Users\Admin\AppData\Local\Temp\c4b092b703d3b8e7772eaa70361a67341f5b16e479098aacb7a1948595f79486.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4440

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1lY00Rk2.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1lY00Rk2.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2892

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2pU8899.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2pU8899.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5028

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
3⤵
PID:5112

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

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1lY00Rk2.exe

Filesize
195KB

MD5
7f726f7dac36a27880ea545866534dda

SHA1
a644a86f8ffe8497101eb2c8ef69b859fb51119d

SHA256
7d8062c6ae88e04ecadb6f8eb85e1d77caba2cb70fed241f04454fd5d70ced2a

SHA512
8d8216a173bf1b498e5bf6d9292b05cd27b913c3203e296d55b169a1980bc38d8589bdb3e88a685a238183a60b8e86049cf280dd47143445c1ba5b6d287c2775

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2pU8899.exe

Filesize
1.1MB

MD5
a1c1c44e837edbc2d55d33ba9620a109

SHA1
0ba4e08d7b6f17f968d1f7cad75d0a3885bae998

SHA256
4160c00350706d7630b0a8bfb47722e7ec956858ab07d5adc9345e37ccb751e5

SHA512
75267e9d0652e006107506457c5253fe701149888ad977d95f52d215410b18e3b145c8779ae389b718f090c5aa41d614e45deb38a96852a07a299a5b075c02bc

Download Submit
memory/2892-12-0x0000000004AC0000-0x0000000004B52000-memory.dmp

Filesize
584KB

Download
memory/2892-9-0x0000000004BB0000-0x0000000005154000-memory.dmp

Filesize
5.6MB

Download
memory/2892-11-0x0000000002550000-0x000000000256E000-memory.dmp

Filesize
120KB

Download
memory/2892-10-0x0000000074110000-0x00000000748C0000-memory.dmp

Filesize
7.7MB

Download
memory/2892-8-0x0000000002250000-0x0000000002270000-memory.dmp

Filesize
128KB

Download
memory/2892-13-0x0000000074110000-0x00000000748C0000-memory.dmp

Filesize
7.7MB

Download
memory/2892-14-0x0000000074110000-0x00000000748C0000-memory.dmp

Filesize
7.7MB

Download
memory/2892-16-0x0000000074110000-0x00000000748C0000-memory.dmp

Filesize
7.7MB

Download
memory/2892-7-0x000000007411E000-0x000000007411F000-memory.dmp

Filesize
4KB

Download
memory/5112-20-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/5112-22-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/5112-21-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/5112-24-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download