mystic | 5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5

General

Target

5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe
Size

326KB
MD5

ab21eebc42492cd4e6d6435b93d5ea90
SHA1

743f891fd0bde5093097a4f5fb3895d50cd1736f
SHA256

5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5
SHA512

865c33a52df3a9f52f1bc25aff3cd5dc93e78bc255024472247975fd34e80940385c3fa0d273d15ca9b4e7d87b50b34fc31728c28b1cfbdf773df56239dacde3
SSDEEP

6144:Kly+bnr+xp0yN90QETcX6VOwPBIAy+hy8vlvZgRkajW19y0a/Y:/MrJy90Jc+OnA4q2i1baY

Score

10^/10

mystic redline lutyr discovery infostealer persistence stealer

Malware Config

Extracted

Family

redline

Botnet

lutyr

C2

77.91.124.55:19071

Signatures

Detect Mystic stealer payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000023c5f-5.dat	mystic_family

Mystic
Mystic is an infostealer written in C++.
stealer mystic
Mystic family
mystic
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0007000000023c60-8.dat	family_redline
behavioral1/memory/4528-11-0x0000000000350000-0x000000000038E000-memory.dmp	family_redline

Redline family
redline

Executes dropped EXE 2 IoCs

pid	Process
4800	1tD12KP4.exe
4528	2hW356lt.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\\\""	5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1tD12KP4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2hW356lt.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 928 wrote to memory of 4800	928	5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe	84
PID 928 wrote to memory of 4800	928	5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe	84
PID 928 wrote to memory of 4800	928	5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe	84
PID 928 wrote to memory of 4528	928	5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe	85
PID 928 wrote to memory of 4528	928	5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe	85
PID 928 wrote to memory of 4528	928	5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe	85

C:\Users\Admin\AppData\Local\Temp\5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe
"C:\Users\Admin\AppData\Local\Temp\5bc277ca07162de67db08c5ae9b94d3fd1f8e6dc90faae9b9ebd5b0b8c5695c5N.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:928
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1tD12KP4.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1tD12KP4.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4800
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2hW356lt.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2hW356lt.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1tD12KP4.exe

Filesize
190KB

MD5
a6656e3d6d06c8ce9cbb4b6952553c20

SHA1
af45103616dc896da5ee4268fd5f9483b5b97c1c

SHA256
fec303b128c44607654c078736b96d2762722f51b6c473dfe5415158fd83718b

SHA512
f53f2214d3f192a352b2a93c66d91988a41a5ab9dbf15edd62ea8ce38da8a732114e3c46526d4dc6f3132330913b1acb90fa11ff454a1520d117149a86678d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\2hW356lt.exe

Filesize
221KB

MD5
a6e9247d37f9ffccde1c4e23d1173a72

SHA1
f0e4aed24229bccf0228d78b953e0249c6395f0b

SHA256
319984265d0b20231d110aa469330f74bfa140fcb11235e424a7449ab431f555

SHA512
14dec751ee28f8a059aaac24b8aa8808f25bd3426f0e5201cc3121b0b7c5f8f4c551b968f8666d17badffdbb7f791d31569613c38cb44c412938ab73c7e986c4

Download Submit
memory/4528-10-0x00000000749BE000-0x00000000749BF000-memory.dmp

Filesize
4KB

Download
memory/4528-11-0x0000000000350000-0x000000000038E000-memory.dmp

Filesize
248KB

Download
memory/4528-12-0x0000000007610000-0x0000000007BB4000-memory.dmp

Filesize
5.6MB

Download
memory/4528-13-0x0000000007100000-0x0000000007192000-memory.dmp

Filesize
584KB

Download
memory/4528-14-0x00000000749B0000-0x0000000075160000-memory.dmp

Filesize
7.7MB

Download
memory/4528-15-0x00000000046C0000-0x00000000046CA000-memory.dmp

Filesize
40KB

Download
memory/4528-16-0x00000000081E0000-0x00000000087F8000-memory.dmp

Filesize
6.1MB

Download
memory/4528-17-0x0000000007470000-0x000000000757A000-memory.dmp

Filesize
1.0MB

Download
memory/4528-18-0x0000000007300000-0x0000000007312000-memory.dmp

Filesize
72KB

Download
memory/4528-19-0x0000000007360000-0x000000000739C000-memory.dmp

Filesize
240KB

Download
memory/4528-20-0x00000000073A0000-0x00000000073EC000-memory.dmp

Filesize
304KB

Download
memory/4528-21-0x00000000749BE000-0x00000000749BF000-memory.dmp

Filesize
4KB

Download
memory/4528-22-0x00000000749B0000-0x0000000075160000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads