mystic | d27450c2663f8e8908c34f9ca27f71a7e8991a1ca1ab20ca050031702fc8f110

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2023 10:30

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General

Target

taiga.exe
Size

511KB
MD5

6b6ffed210fddf1c28b834daee8a4b4f
SHA1

948668592940cebb02af57f3a04228d6c0597ecf
SHA256

d27450c2663f8e8908c34f9ca27f71a7e8991a1ca1ab20ca050031702fc8f110
SHA512

1a8b703a153e7c9f797b4ada63e6e3e9ea99297b36c5cf2e73f610ad1ae5e8e59540f12b7a9f3c2771b0f9aef417a9d8c205a3f76f16935de345426630be72d1
SSDEEP

12288:SMrNy90D1B0xV8zw3wHjG9Y8TUs2euF+4+wSRoFCrGYf9g:fyUbfzcYSz2eu4USGAZ9g

Score

10^/10

mystic redline taiga infostealer persistence stealer

Malware Config

Extracted

Family

redline

Botnet

taiga

5.42.92.51:19057

Signatures

Detect Mystic stealer payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1204-14-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral1/memory/1204-15-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral1/memory/1204-16-0x0000000000400000-0x0000000000433000-memory.dmp	mystic_family
behavioral1/memory/1204-18-0x0000000000400000-0x0000000000433000-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

Processes:

resource	yara_rule
behavioral1/memory/2528-22-0x0000000000400000-0x000000000043C000-memory.dmp	family_redline

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

5Xj86bE.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\International\Geo\Nation 5Xj86bE.exe
Executes dropped EXE 4 IoCs

Processes:

Db2Jy26.exe3Bj213TT.exe4Pp5Qq3.exe5Xj86bE.exe

pid process

4872 Db2Jy26.exe
2560 3Bj213TT.exe
2328 4Pp5Qq3.exe
3820 5Xj86bE.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\International\Geo\Nation	5Xj86bE.exe

pid	process
4872	Db2Jy26.exe
2560	3Bj213TT.exe
2328	4Pp5Qq3.exe
3820	5Xj86bE.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

taiga.exeDb2Jy26.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\\\""	taiga.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\\\""	Db2Jy26.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

3Bj213TT.exe4Pp5Qq3.exe

description	pid	process	target process
PID 2560 set thread context of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2328 set thread context of 2528	2328	4Pp5Qq3.exe	AppLaunch.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

220 1204 WerFault.exe AppLaunch.exe

pid	pid_target	process	target process
220	1204	WerFault.exe	AppLaunch.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

taiga.exeDb2Jy26.exe3Bj213TT.exe4Pp5Qq3.exe5Xj86bE.exe

description	pid	process	target process
PID 448 wrote to memory of 4872	448	taiga.exe	Db2Jy26.exe
PID 448 wrote to memory of 4872	448	taiga.exe	Db2Jy26.exe
PID 448 wrote to memory of 4872	448	taiga.exe	Db2Jy26.exe
PID 4872 wrote to memory of 2560	4872	Db2Jy26.exe	3Bj213TT.exe
PID 4872 wrote to memory of 2560	4872	Db2Jy26.exe	3Bj213TT.exe
PID 4872 wrote to memory of 2560	4872	Db2Jy26.exe	3Bj213TT.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 2560 wrote to memory of 1204	2560	3Bj213TT.exe	AppLaunch.exe
PID 4872 wrote to memory of 2328	4872	Db2Jy26.exe	4Pp5Qq3.exe
PID 4872 wrote to memory of 2328	4872	Db2Jy26.exe	4Pp5Qq3.exe
PID 4872 wrote to memory of 2328	4872	Db2Jy26.exe	4Pp5Qq3.exe
PID 2328 wrote to memory of 2528	2328	4Pp5Qq3.exe	AppLaunch.exe
PID 2328 wrote to memory of 2528	2328	4Pp5Qq3.exe	AppLaunch.exe
PID 2328 wrote to memory of 2528	2328	4Pp5Qq3.exe	AppLaunch.exe
PID 2328 wrote to memory of 2528	2328	4Pp5Qq3.exe	AppLaunch.exe
PID 2328 wrote to memory of 2528	2328	4Pp5Qq3.exe	AppLaunch.exe
PID 2328 wrote to memory of 2528	2328	4Pp5Qq3.exe	AppLaunch.exe
PID 2328 wrote to memory of 2528	2328	4Pp5Qq3.exe	AppLaunch.exe
PID 2328 wrote to memory of 2528	2328	4Pp5Qq3.exe	AppLaunch.exe
PID 448 wrote to memory of 3820	448	taiga.exe	5Xj86bE.exe
PID 448 wrote to memory of 3820	448	taiga.exe	5Xj86bE.exe
PID 448 wrote to memory of 3820	448	taiga.exe	5Xj86bE.exe
PID 3820 wrote to memory of 4760	3820	5Xj86bE.exe	cmd.exe
PID 3820 wrote to memory of 4760	3820	5Xj86bE.exe	cmd.exe
PID 3820 wrote to memory of 4760	3820	5Xj86bE.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\taiga.exe
"C:\Users\Admin\AppData\Local\Temp\taiga.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:448

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Db2Jy26.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Db2Jy26.exe
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4872

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3Bj213TT.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3Bj213TT.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2560

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
4⤵
PID:1204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1204 -s 540
5⤵
- Program crash
PID:220

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\4Pp5Qq3.exe
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\4Pp5Qq3.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2328

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
4⤵
PID:2528

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\5Xj86bE.exe
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\5Xj86bE.exe
2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3820

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\is64.bat" "
3⤵
PID:4760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1204 -ip 1204
1⤵
PID:3368

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

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\5Xj86bE.exe
Filesize
73KB

MD5
461b41b4556bb3a6d2e3a92dfb7a3eb6

SHA1
a33bfc4ac36ed4d14ef42476fd4bb7a1cecbf8a0

SHA256
d18b3af88c96585bded0e9558b8bc8b127625bba9654b79656681cdcc38ec160

SHA512
bf9036e52ebaa92559eaafdbb2f39dcfa9be4100726f2b1c64d649242f0a827e0946a68a7e458ff79cac14531958e7dadb1016011d571a03304b13ef9a6822c1

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\5Xj86bE.exe
Filesize
73KB

MD5
461b41b4556bb3a6d2e3a92dfb7a3eb6

SHA1
a33bfc4ac36ed4d14ef42476fd4bb7a1cecbf8a0

SHA256
d18b3af88c96585bded0e9558b8bc8b127625bba9654b79656681cdcc38ec160

SHA512
bf9036e52ebaa92559eaafdbb2f39dcfa9be4100726f2b1c64d649242f0a827e0946a68a7e458ff79cac14531958e7dadb1016011d571a03304b13ef9a6822c1

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Db2Jy26.exe
Filesize
389KB

MD5
c55c838899340f38eda46256739c65f6

SHA1
06e40a902ce671e76afe8f2fa094ed519505f756

SHA256
bdb5fcc4129e36dfdcf5ccad2363c0c392968b9f00031804fe6caac787c73dde

SHA512
8b9f2b8184b97a997bf06ed684d4be591ff42bb9385ccb95057b244062280e5e8620f3d61b57c05d5143026b72c2043e95bd16f534553e4e5fbd05a18bb6bd16

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Db2Jy26.exe
Filesize
389KB

MD5
c55c838899340f38eda46256739c65f6

SHA1
06e40a902ce671e76afe8f2fa094ed519505f756

SHA256
bdb5fcc4129e36dfdcf5ccad2363c0c392968b9f00031804fe6caac787c73dde

SHA512
8b9f2b8184b97a997bf06ed684d4be591ff42bb9385ccb95057b244062280e5e8620f3d61b57c05d5143026b72c2043e95bd16f534553e4e5fbd05a18bb6bd16

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3Bj213TT.exe
Filesize
300KB

MD5
784667bb96ccb30c4cf44f2c5f493769

SHA1
28185165ab4dbbb4a139ae1af0bb6934ebe05c04

SHA256
1025fb084bca865df30e69eea7a9a4a3c852626e148b340de661e6f5b63bc1c9

SHA512
62c9def097f132cdb26b11e586f3e15407b9eb9e9e32f79460a3be1bd4c8e046db8488f754cd1c1cc4fe4025a3f9bc9484e94eae0c7d273050f8e6548d12bc20

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3Bj213TT.exe
Filesize
300KB

MD5
784667bb96ccb30c4cf44f2c5f493769

SHA1
28185165ab4dbbb4a139ae1af0bb6934ebe05c04

SHA256
1025fb084bca865df30e69eea7a9a4a3c852626e148b340de661e6f5b63bc1c9

SHA512
62c9def097f132cdb26b11e586f3e15407b9eb9e9e32f79460a3be1bd4c8e046db8488f754cd1c1cc4fe4025a3f9bc9484e94eae0c7d273050f8e6548d12bc20

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\4Pp5Qq3.exe
Filesize
339KB

MD5
14d9834611ad581afcfea061652ff6cb

SHA1
802f964d0be7858eb2f1e7c6fcda03501fd1b71c

SHA256
e6e9b3d830f2d7860a09d596576e8ab0131c527b47dda73fe727b71b44c8cf60

SHA512
cbef1f44eb76d719c60d857a567a3fc700d62751111337cd4f8d30deae6901dc361320f28dac5ec5468420419eed66cada20f4c90fe07db6a3f8cf959eba31b5

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\4Pp5Qq3.exe
Filesize
339KB

MD5
14d9834611ad581afcfea061652ff6cb

SHA1
802f964d0be7858eb2f1e7c6fcda03501fd1b71c

SHA256
e6e9b3d830f2d7860a09d596576e8ab0131c527b47dda73fe727b71b44c8cf60

SHA512
cbef1f44eb76d719c60d857a567a3fc700d62751111337cd4f8d30deae6901dc361320f28dac5ec5468420419eed66cada20f4c90fe07db6a3f8cf959eba31b5

Download Submit
C:\Users\Admin\AppData\Local\Temp\is64.bat
Filesize
181B

MD5
225edee1d46e0a80610db26b275d72fb

SHA1
ce206abf11aaf19278b72f5021cc64b1b427b7e8

SHA256
e1befb57d724c9dc760cf42d7e0609212b22faeb2dc0c3ffe2fbd7134ff69559

SHA512
4f01a2a248a1322cb690b7395b818d2780e46f4884e59f1ab96125d642b6358eea97c7fad6023ef17209b218daa9c88d15ea2b92f124ecb8434c0c7b4a710504

Download Submit
C:\Users\Admin\AppData\Local\Temp\is64.txt
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1204-16-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/1204-15-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/1204-18-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/1204-14-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/2528-38-0x00000000075F0000-0x00000000075FA000-memory.dmp

Filesize
40KB

Download
memory/2528-32-0x0000000007530000-0x00000000075C2000-memory.dmp

Filesize
584KB

Download
memory/2528-30-0x0000000007A40000-0x0000000007FE4000-memory.dmp

Filesize
5.6MB

Download
memory/2528-28-0x0000000074250000-0x0000000074A00000-memory.dmp

Filesize
7.7MB

Download
memory/2528-37-0x00000000050E0000-0x00000000050F0000-memory.dmp

Filesize
64KB

Download
memory/2528-22-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2528-39-0x0000000008610000-0x0000000008C28000-memory.dmp

Filesize
6.1MB

Download
memory/2528-40-0x0000000007890000-0x000000000799A000-memory.dmp

Filesize
1.0MB

Download
memory/2528-41-0x00000000077C0000-0x00000000077D2000-memory.dmp

Filesize
72KB

Download
memory/2528-42-0x0000000007820000-0x000000000785C000-memory.dmp

Filesize
240KB

Download
memory/2528-43-0x00000000079A0000-0x00000000079EC000-memory.dmp

Filesize
304KB

Download
memory/2528-44-0x0000000074250000-0x0000000074A00000-memory.dmp

Filesize
7.7MB

Download
memory/2528-45-0x00000000050E0000-0x00000000050F0000-memory.dmp

Filesize
64KB

Download