mystic | 91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b

General

Target

91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe
Size

652KB
MD5

f4e05067b330b3af02bcbe478c14dc70
SHA1

dac73148c5ee4176574c51e7429f482a21c0dde6
SHA256

91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b
SHA512

4ee5ff2a6f0150d39968122d2e25cd68839f3f8c085df3a0b11ea2d16a5be583160c38b3d5236b904b50a9657c4f23922eb171ef7819a846c8326bb899228a2d
SSDEEP

12288:EMray90Q5kgF6ABsLF4lZV1xX4dZdXprV8qT7zSrawUGcE3b6QfYBctEQ48:+yb5ku6m6YDvX4dZxJV3v2awUO3b6gt

Score

10^/10

mystic smokeloader backdoor evasion persistence stealer trojan

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://77.91.68.29/fks/

rc4.i32

Signatures

Detect Mystic stealer payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2348-19-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral1/memory/2348-20-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral1/memory/2348-21-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family
behavioral1/memory/2348-25-0x0000000000400000-0x0000000000434000-memory.dmp	mystic_family

Modifies Windows Defender Real-time Protection settings 3 TTPs 6 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

Processes:

AppLaunch.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	AppLaunch.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	AppLaunch.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	AppLaunch.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	AppLaunch.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	AppLaunch.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	AppLaunch.exe

Mystic
Mystic is an infostealer written in C++.
stealer mystic
SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Executes dropped EXE 4 IoCs

Processes:

XP3ZS95.exe1Ct04Vl5.exe2Uo6408.exe3LC43Hg.exe

pid process

2744 XP3ZS95.exe
2828 1Ct04Vl5.exe
3100 2Uo6408.exe
1968 3LC43Hg.exe

pid	process
2744	XP3ZS95.exe
2828	1Ct04Vl5.exe
3100	2Uo6408.exe
1968	3LC43Hg.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exeXP3ZS95.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\\\""	91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup1 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP001.TMP\\\""	XP3ZS95.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

1Ct04Vl5.exe2Uo6408.exe

description	pid	process	target process
PID 2828 set thread context of 3180	2828	1Ct04Vl5.exe	AppLaunch.exe
PID 3100 set thread context of 2348	3100	2Uo6408.exe	AppLaunch.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1196 2348 WerFault.exe AppLaunch.exe

pid	pid_target	process	target process
1196	2348	WerFault.exe	AppLaunch.exe

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

Processes:

3LC43Hg.exe

description	ioc	process
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3LC43Hg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3LC43Hg.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	3LC43Hg.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

3LC43Hg.exeAppLaunch.exe

pid	process
1968	3LC43Hg.exe
1968	3LC43Hg.exe
3180	AppLaunch.exe
3180	AppLaunch.exe
3416
3416
3416
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3416

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

pid process

3416
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

3LC43Hg.exe

pid process

1968 3LC43Hg.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

AppLaunch.exe

description pid process

Token: SeDebugPrivilege 3180 AppLaunch.exe
Token: SeShutdownPrivilege 3416
Token: SeCreatePagefilePrivilege 3416
Suspicious use of UnmapMainImage 1 IoCs

Processes:

pid process

3416

pid	process
3416

description	pid	process
Token: SeDebugPrivilege	3180	AppLaunch.exe
Token: SeShutdownPrivilege	3416
Token: SeCreatePagefilePrivilege	3416

pid	process
3416

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exeXP3ZS95.exe1Ct04Vl5.exe2Uo6408.exe

description	pid	process	target process
PID 2824 wrote to memory of 2744	2824	91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe	XP3ZS95.exe
PID 2824 wrote to memory of 2744	2824	91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe	XP3ZS95.exe
PID 2824 wrote to memory of 2744	2824	91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe	XP3ZS95.exe
PID 2744 wrote to memory of 2828	2744	XP3ZS95.exe	1Ct04Vl5.exe
PID 2744 wrote to memory of 2828	2744	XP3ZS95.exe	1Ct04Vl5.exe
PID 2744 wrote to memory of 2828	2744	XP3ZS95.exe	1Ct04Vl5.exe
PID 2828 wrote to memory of 3180	2828	1Ct04Vl5.exe	AppLaunch.exe
PID 2828 wrote to memory of 3180	2828	1Ct04Vl5.exe	AppLaunch.exe
PID 2828 wrote to memory of 3180	2828	1Ct04Vl5.exe	AppLaunch.exe
PID 2828 wrote to memory of 3180	2828	1Ct04Vl5.exe	AppLaunch.exe
PID 2828 wrote to memory of 3180	2828	1Ct04Vl5.exe	AppLaunch.exe
PID 2828 wrote to memory of 3180	2828	1Ct04Vl5.exe	AppLaunch.exe
PID 2828 wrote to memory of 3180	2828	1Ct04Vl5.exe	AppLaunch.exe
PID 2828 wrote to memory of 3180	2828	1Ct04Vl5.exe	AppLaunch.exe
PID 2744 wrote to memory of 3100	2744	XP3ZS95.exe	2Uo6408.exe
PID 2744 wrote to memory of 3100	2744	XP3ZS95.exe	2Uo6408.exe
PID 2744 wrote to memory of 3100	2744	XP3ZS95.exe	2Uo6408.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 3100 wrote to memory of 2348	3100	2Uo6408.exe	AppLaunch.exe
PID 2824 wrote to memory of 1968	2824	91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe	3LC43Hg.exe
PID 2824 wrote to memory of 1968	2824	91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe	3LC43Hg.exe
PID 2824 wrote to memory of 1968	2824	91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe	3LC43Hg.exe

C:\Users\Admin\AppData\Local\Temp\91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe
"C:\Users\Admin\AppData\Local\Temp\91cc08eaa2d516fe6b48ecf473dac67146c347e939a09646e1e141008e82003b.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2824

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\XP3ZS95.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\XP3ZS95.exe
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2744

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Ct04Vl5.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Ct04Vl5.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2828

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
4⤵
- Modifies Windows Defender Real-time Protection settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3180

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Uo6408.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Uo6408.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3100

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
4⤵
PID:2348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2348 -s 540
5⤵
- Program crash
PID:1196

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3LC43Hg.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3LC43Hg.exe
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2348 -ip 2348
1⤵
PID:3912

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Impair Defenses

1

T1562

Disable or Modify Tools

1

T1562.001

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3LC43Hg.exe
Filesize
31KB

MD5
16634b87b4b7ce5c0f7890a3e346872a

SHA1
83b847720559d7df3ea5012a02b3fdd7e237453c

SHA256
0d6b117dd39fa10e7222511eb6b8cd523697afd628578dcdec9afe07a7981102

SHA512
de83082d9df19f62f39bc622ce9aa4dde4434f2cb587689e6a98162b4b71e170bbebad31c29b075f4ca77963c500e91e1f0b59519a5a99408f60701afcc041f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\3LC43Hg.exe
Filesize
31KB

MD5
16634b87b4b7ce5c0f7890a3e346872a

SHA1
83b847720559d7df3ea5012a02b3fdd7e237453c

SHA256
0d6b117dd39fa10e7222511eb6b8cd523697afd628578dcdec9afe07a7981102

SHA512
de83082d9df19f62f39bc622ce9aa4dde4434f2cb587689e6a98162b4b71e170bbebad31c29b075f4ca77963c500e91e1f0b59519a5a99408f60701afcc041f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\XP3ZS95.exe
Filesize
528KB

MD5
90f8d6aa2d0ac143af8b2325da31d0f1

SHA1
dded159f748c5b6981b65d9cc17eb38821018a71

SHA256
559ef6d007b8d5f9e158db0a3cc1874510f3dcbfc70d9616684a1fb0eb874410

SHA512
a1efb35396faa1dced8e63d6a93ad1b9764921662bc1005e523fb465735818972c68ad7caa0dfb30d481190f57acd8f880cc197df72eaddd6c9c7ac5ca401816

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\XP3ZS95.exe
Filesize
528KB

MD5
90f8d6aa2d0ac143af8b2325da31d0f1

SHA1
dded159f748c5b6981b65d9cc17eb38821018a71

SHA256
559ef6d007b8d5f9e158db0a3cc1874510f3dcbfc70d9616684a1fb0eb874410

SHA512
a1efb35396faa1dced8e63d6a93ad1b9764921662bc1005e523fb465735818972c68ad7caa0dfb30d481190f57acd8f880cc197df72eaddd6c9c7ac5ca401816

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Ct04Vl5.exe
Filesize
869KB

MD5
16845166d35dce3b8448951e5bae39a1

SHA1
4ecec929c2ffee9da37f8d286043fba01f7b012b

SHA256
357f0652da4463cca48b419ada2fb7f1455f9661636bb2aa0413537e5efaf06f

SHA512
eb3cf083503932f2b66daa7030f6bfb1e2ac37b3f5aa37f6ffbcbbc2fe5e184162cd94d6fec66542920845842e4d787b6038a0bfb0c71c9852fd513a24d0cbde

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1Ct04Vl5.exe
Filesize
869KB

MD5
16845166d35dce3b8448951e5bae39a1

SHA1
4ecec929c2ffee9da37f8d286043fba01f7b012b

SHA256
357f0652da4463cca48b419ada2fb7f1455f9661636bb2aa0413537e5efaf06f

SHA512
eb3cf083503932f2b66daa7030f6bfb1e2ac37b3f5aa37f6ffbcbbc2fe5e184162cd94d6fec66542920845842e4d787b6038a0bfb0c71c9852fd513a24d0cbde

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Uo6408.exe
Filesize
1.0MB

MD5
178f95576ac414f0543a919a98ac21da

SHA1
2abc8ab9b61c9e3615dfbaa9059e15f7c57eb27b

SHA256
a761e031c130c1308e0d02fe5eb0eeaff66e92e1a70a693a968f53bbb197ffd8

SHA512
f7ef1fb8f14bf799806d1eb8fe2835c20230c2234a64ed9ce22c8e5a1751bc74d4a27aece973c6becbefc04b82a3e3a8b5c42521235e0781dddd6fdac344baaa

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2Uo6408.exe
Filesize
1.0MB

MD5
178f95576ac414f0543a919a98ac21da

SHA1
2abc8ab9b61c9e3615dfbaa9059e15f7c57eb27b

SHA256
a761e031c130c1308e0d02fe5eb0eeaff66e92e1a70a693a968f53bbb197ffd8

SHA512
f7ef1fb8f14bf799806d1eb8fe2835c20230c2234a64ed9ce22c8e5a1751bc74d4a27aece973c6becbefc04b82a3e3a8b5c42521235e0781dddd6fdac344baaa

Download Submit
memory/1968-27-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1968-29-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2348-19-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2348-21-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2348-20-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2348-25-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3180-18-0x0000000073F30000-0x00000000746E0000-memory.dmp

Filesize
7.7MB

Download
memory/3180-14-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3180-33-0x0000000073F30000-0x00000000746E0000-memory.dmp

Filesize
7.7MB

Download
memory/3416-28-0x0000000002630000-0x0000000002646000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads