mystic | 99686dca69444efc0d94a9dca047a595867bc3f14e4bbb2880ba7c3281634bfd

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
15-11-2023 05:54

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General

Target

NEAS.c5dd9eba76428ceb4ecd645998781f90.exe
Size

570KB
MD5

c5dd9eba76428ceb4ecd645998781f90
SHA1

5f99d75c3ec9971b69b2a4a0a0661e923671866b
SHA256

99686dca69444efc0d94a9dca047a595867bc3f14e4bbb2880ba7c3281634bfd
SHA512

ba1eb01ae0043ccfc456e7d56e649be9d8a5585fd570cc8dd96bdae0ebd38d5a5bc9c45822b41feebbadf4146d83bd42ce6e528fd9d5776b57203cab37c32c97
SSDEEP

12288:0MrIy90Ue3X9P7w+GwY8TUs2pu1gI5m5J4OjWiWk++5Bdu:8y5UP1YSz2pu1gQDiWcI

Score

10^/10

mystic redline smokeloader taiga backdoor infostealer persistence stealer trojan

Malware Config

Extracted

Family

smokeloader

Version

2022

http://5.42.92.190/fks/index.php

rc4.i32

Extracted

Family

redline

Botnet

taiga

5.42.92.51:19057

Signatures

Detect Mystic stealer payload 4 IoCs

resource	yara_rule
behavioral1/memory/4388-14-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral1/memory/4388-15-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral1/memory/4388-16-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral1/memory/4388-18-0x0000000000400000-0x0000000000433000-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 1 IoCs

resource	yara_rule
behavioral1/memory/5128-28-0x0000000000400000-0x000000000043C000-memory.dmp	family_redline

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Executes dropped EXE 4 IoCs

pid	Process
456	Vv2EB61.exe
4416	1bG72bE8.exe
4276	2wx2049.exe
2836	6bH1jg5.exe

Adds Run key to start application 2 TTPs 2 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\\\""	NEAS.c5dd9eba76428ceb4ecd645998781f90.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\\\""	Vv2EB61.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4416 set thread context of 4388	4416	1bG72bE8.exe	89
PID 2836 set thread context of 5128	2836	6bH1jg5.exe	99

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3788	4388	WerFault.exe	89

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	2wx2049.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	2wx2049.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	2wx2049.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4276	2wx2049.exe
4276	2wx2049.exe
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found
3180	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3180	Process not Found

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4276	2wx2049.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3180	Process not Found
Token: SeCreatePagefilePrivilege	3180	Process not Found
Token: SeShutdownPrivilege	3180	Process not Found
Token: SeCreatePagefilePrivilege	3180	Process not Found

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3180	Process not Found

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 5600 wrote to memory of 456	5600	NEAS.c5dd9eba76428ceb4ecd645998781f90.exe	85
PID 5600 wrote to memory of 456	5600	NEAS.c5dd9eba76428ceb4ecd645998781f90.exe	85
PID 5600 wrote to memory of 456	5600	NEAS.c5dd9eba76428ceb4ecd645998781f90.exe	85
PID 456 wrote to memory of 4416	456	Vv2EB61.exe	86
PID 456 wrote to memory of 4416	456	Vv2EB61.exe	86
PID 456 wrote to memory of 4416	456	Vv2EB61.exe	86
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 4416 wrote to memory of 4388	4416	1bG72bE8.exe	89
PID 456 wrote to memory of 4276	456	Vv2EB61.exe	92
PID 456 wrote to memory of 4276	456	Vv2EB61.exe	92
PID 456 wrote to memory of 4276	456	Vv2EB61.exe	92
PID 5600 wrote to memory of 2836	5600	NEAS.c5dd9eba76428ceb4ecd645998781f90.exe	96
PID 5600 wrote to memory of 2836	5600	NEAS.c5dd9eba76428ceb4ecd645998781f90.exe	96
PID 5600 wrote to memory of 2836	5600	NEAS.c5dd9eba76428ceb4ecd645998781f90.exe	96
PID 2836 wrote to memory of 3520	2836	6bH1jg5.exe	98
PID 2836 wrote to memory of 3520	2836	6bH1jg5.exe	98
PID 2836 wrote to memory of 3520	2836	6bH1jg5.exe	98
PID 2836 wrote to memory of 5128	2836	6bH1jg5.exe	99
PID 2836 wrote to memory of 5128	2836	6bH1jg5.exe	99
PID 2836 wrote to memory of 5128	2836	6bH1jg5.exe	99
PID 2836 wrote to memory of 5128	2836	6bH1jg5.exe	99
PID 2836 wrote to memory of 5128	2836	6bH1jg5.exe	99
PID 2836 wrote to memory of 5128	2836	6bH1jg5.exe	99
PID 2836 wrote to memory of 5128	2836	6bH1jg5.exe	99
PID 2836 wrote to memory of 5128	2836	6bH1jg5.exe	99

C:\Users\Admin\AppData\Local\Temp\NEAS.c5dd9eba76428ceb4ecd645998781f90.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.c5dd9eba76428ceb4ecd645998781f90.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:5600
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Vv2EB61.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Vv2EB61.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:456
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1bG72bE8.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1bG72bE8.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4416
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:4388
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4388 -s 540
        5⤵
        Program crash
        
        PID:3788
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2wx2049.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2wx2049.exe
    3⤵
    - Executes dropped EXE
    - Checks SCSI registry key(s)
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    PID:4276
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\6bH1jg5.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\6bH1jg5.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2836
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:3520
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:5128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4388 -ip 4388
1⤵
PID:2352

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\6bH1jg5.exe

Filesize
339KB

MD5
14d9834611ad581afcfea061652ff6cb

SHA1
802f964d0be7858eb2f1e7c6fcda03501fd1b71c

SHA256
e6e9b3d830f2d7860a09d596576e8ab0131c527b47dda73fe727b71b44c8cf60

SHA512
cbef1f44eb76d719c60d857a567a3fc700d62751111337cd4f8d30deae6901dc361320f28dac5ec5468420419eed66cada20f4c90fe07db6a3f8cf959eba31b5

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\6bH1jg5.exe

Filesize
339KB

MD5
14d9834611ad581afcfea061652ff6cb

SHA1
802f964d0be7858eb2f1e7c6fcda03501fd1b71c

SHA256
e6e9b3d830f2d7860a09d596576e8ab0131c527b47dda73fe727b71b44c8cf60

SHA512
cbef1f44eb76d719c60d857a567a3fc700d62751111337cd4f8d30deae6901dc361320f28dac5ec5468420419eed66cada20f4c90fe07db6a3f8cf959eba31b5

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Vv2EB61.exe

Filesize
334KB

MD5
15a244902765cc509cbc7a37c734c85f

SHA1
44085fa17d4ece622338a654c2a8695d3aa9b4da

SHA256
fc4a924c3be5cf2daf8f581dba36507cec72240a3919638ea1685025dcdf4a7e

SHA512
c0a6261265058ed3a0f46b37b41477c8b721b4e82470abd8196a1183d9553548f10a884d53756aa0328ae8aec57dd4d09265f2538c06a218d457a65ed93814a2

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Vv2EB61.exe

Filesize
334KB

MD5
15a244902765cc509cbc7a37c734c85f

SHA1
44085fa17d4ece622338a654c2a8695d3aa9b4da

SHA256
fc4a924c3be5cf2daf8f581dba36507cec72240a3919638ea1685025dcdf4a7e

SHA512
c0a6261265058ed3a0f46b37b41477c8b721b4e82470abd8196a1183d9553548f10a884d53756aa0328ae8aec57dd4d09265f2538c06a218d457a65ed93814a2

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1bG72bE8.exe

Filesize
300KB

MD5
784667bb96ccb30c4cf44f2c5f493769

SHA1
28185165ab4dbbb4a139ae1af0bb6934ebe05c04

SHA256
1025fb084bca865df30e69eea7a9a4a3c852626e148b340de661e6f5b63bc1c9

SHA512
62c9def097f132cdb26b11e586f3e15407b9eb9e9e32f79460a3be1bd4c8e046db8488f754cd1c1cc4fe4025a3f9bc9484e94eae0c7d273050f8e6548d12bc20

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\1bG72bE8.exe

Filesize
300KB

MD5
784667bb96ccb30c4cf44f2c5f493769

SHA1
28185165ab4dbbb4a139ae1af0bb6934ebe05c04

SHA256
1025fb084bca865df30e69eea7a9a4a3c852626e148b340de661e6f5b63bc1c9

SHA512
62c9def097f132cdb26b11e586f3e15407b9eb9e9e32f79460a3be1bd4c8e046db8488f754cd1c1cc4fe4025a3f9bc9484e94eae0c7d273050f8e6548d12bc20

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2wx2049.exe

Filesize
37KB

MD5
b938034561ab089d7047093d46deea8f

SHA1
d778c32cc46be09b107fa47cf3505ba5b748853d

SHA256
260784b1afd8b819cb6ccb91f01090942375e527abdc060dd835992d88c04161

SHA512
4909585c112fba3575e07428679fd7add07453e11169f33922faca2012d8e8fa6dfb763d991c68d3b4bbc6e78b6f37d2380c502daada325d73c7fff6c647769b

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2wx2049.exe

Filesize
37KB

MD5
b938034561ab089d7047093d46deea8f

SHA1
d778c32cc46be09b107fa47cf3505ba5b748853d

SHA256
260784b1afd8b819cb6ccb91f01090942375e527abdc060dd835992d88c04161

SHA512
4909585c112fba3575e07428679fd7add07453e11169f33922faca2012d8e8fa6dfb763d991c68d3b4bbc6e78b6f37d2380c502daada325d73c7fff6c647769b

Download Submit
memory/3180-23-0x0000000002C90000-0x0000000002CA6000-memory.dmp

Filesize
88KB

Download
memory/4276-24-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4276-22-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4388-18-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4388-16-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4388-15-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4388-14-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/5128-35-0x00000000077A0000-0x00000000077AA000-memory.dmp

Filesize
40KB

Download
memory/5128-31-0x0000000074180000-0x0000000074930000-memory.dmp

Filesize
7.7MB

Download
memory/5128-32-0x0000000007CC0000-0x0000000008264000-memory.dmp

Filesize
5.6MB

Download
memory/5128-33-0x00000000077B0000-0x0000000007842000-memory.dmp

Filesize
584KB

Download
memory/5128-34-0x0000000007940000-0x0000000007950000-memory.dmp

Filesize
64KB

Download
memory/5128-28-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/5128-36-0x0000000008890000-0x0000000008EA8000-memory.dmp

Filesize
6.1MB

Download
memory/5128-37-0x0000000007B20000-0x0000000007C2A000-memory.dmp

Filesize
1.0MB

Download
memory/5128-38-0x0000000007A10000-0x0000000007A22000-memory.dmp

Filesize
72KB

Download
memory/5128-39-0x0000000007A70000-0x0000000007AAC000-memory.dmp

Filesize
240KB

Download
memory/5128-40-0x0000000007AB0000-0x0000000007AFC000-memory.dmp

Filesize
304KB

Download
memory/5128-41-0x0000000074180000-0x0000000074930000-memory.dmp

Filesize
7.7MB

Download
memory/5128-42-0x0000000007940000-0x0000000007950000-memory.dmp

Filesize
64KB

Download