mystic | fea4a5268fd3fad5b4772bcf4ef021d104110cff4b7bd43f6ad10ebcab7b0916

Analysis

max time kernel
124s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10-05-2024 14:35

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General

Target

104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe
Size

334KB
MD5

b42aeb4b9d29f6b7bdbbd0505f58c5e9
SHA1

8958434f4aa7ec7ad89af115f6b640119a2b5635
SHA256

104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891
SHA512

595a294eb35bf19628bb684ecf9b5289834913a55faab29d1edb222075a963ca91a9e674e55e019cf5afb1200a39c894938cf5df92eae3b465ea96ef560f05d2
SSDEEP

6144:Kry+bnr+Cp0yN90QEsXzkP1aViNXxVkSdLx/ZivrDucWC:dMrCy90eiNXxVkSv/irf

Score

10^/10

mystic smokeloader backdoor persistence stealer trojan

Malware Config

Signatures

Detect Mystic stealer payload 4 IoCs

resource	yara_rule
behavioral3/memory/4756-7-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral3/memory/4756-11-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral3/memory/4756-9-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral3/memory/4756-8-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family

Mystic
Mystic is an infostealer written in C++.
stealer mystic
SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Executes dropped EXE 2 IoCs

pid	Process
228	1cz40Da2.exe
3600	2ob3759.exe

Adds Run key to start application 2 TTPs 1 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\\\""	104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 228 set thread context of 4756	228	1cz40Da2.exe	91

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4028	4756	WerFault.exe	91

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	2ob3759.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	2ob3759.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	2ob3759.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 228	2732	104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe	89
PID 2732 wrote to memory of 228	2732	104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe	89
PID 2732 wrote to memory of 228	2732	104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe	89
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 228 wrote to memory of 4756	228	1cz40Da2.exe	91
PID 2732 wrote to memory of 3600	2732	104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe	94
PID 2732 wrote to memory of 3600	2732	104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe	94
PID 2732 wrote to memory of 3600	2732	104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe	94

C:\Users\Admin\AppData\Local\Temp\104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe
"C:\Users\Admin\AppData\Local\Temp\104ab96ec5c48fc27c7e1536ff21081aa1efc5fcfdb8ff48716f9c44afbda891.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1cz40Da2.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1cz40Da2.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:228
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:4756
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4756 -s 540
      4⤵
      Program crash
      PID:4028
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2ob3759.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2ob3759.exe
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  PID:3600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4756 -ip 4756
1⤵
PID:4600

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4020,i,7012731823941922179,12386606396608877869,262144 --variations-seed-version --mojo-platform-channel-handle=4068 /prefetch:8
1⤵
PID:4864

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

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1cz40Da2.exe

Filesize
300KB

MD5
e1c002feee1ed8c4ed5dbc1af05cb54c

SHA1
96343c17e17090dfda734dd1b23a6e439e57f475

SHA256
f916b0b0c5ffbd828e70233c86e521021719122e1fb8482dcb9f3193eaaacfdc

SHA512
b121334b555a85154f1493b994987ca1ad8bd36343232e0291dcef6c2c152f83db8f54159158b6a2241852fb1e83046ed0873bd538cd6833996f14a470a76142

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2ob3759.exe

Filesize
37KB

MD5
b938034561ab089d7047093d46deea8f

SHA1
d778c32cc46be09b107fa47cf3505ba5b748853d

SHA256
260784b1afd8b819cb6ccb91f01090942375e527abdc060dd835992d88c04161

SHA512
4909585c112fba3575e07428679fd7add07453e11169f33922faca2012d8e8fa6dfb763d991c68d3b4bbc6e78b6f37d2380c502daada325d73c7fff6c647769b

Download Submit
memory/3600-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3600-16-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4756-7-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4756-11-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4756-9-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4756-8-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads