6ba8dca5e199bc7a8ff72f007ad578dab1ce7d0f90bac6063854d4df79033cfc

General

Target

2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe
Size

28.0MB
MD5

0f7472a971ff9d71d41c52b034542a96
SHA1

84c39f084c64c6fa70af21d461a576d46cf55d9b
SHA256

6ba8dca5e199bc7a8ff72f007ad578dab1ce7d0f90bac6063854d4df79033cfc
SHA512

56758d06fab7b3b805b4c072d8b700f9662ce7b3092380924cb4c728a925e589b5caab50bc059373558bb66c584e587ccc545bad845254fcf891e8cd09c39de3
SSDEEP

786432:To34n+em4k8rrCKoayYfqAtUGxOh5TNO8dASt:TsImo0XDG6G8d/t

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
1408	udUOzbuvz8gtWqQ.exe
4872	CTS.exe
2012	udUOzbuvz8gtWqQ.exe

Loads dropped DLL 1 IoCs

pid	Process
2012	udUOzbuvz8gtWqQ.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3720	2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe
Token: SeDebugPrivilege	4872	CTS.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3720 wrote to memory of 1408	3720	2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe	87
PID 3720 wrote to memory of 1408	3720	2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe	87
PID 3720 wrote to memory of 1408	3720	2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe	87
PID 3720 wrote to memory of 4872	3720	2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe	89
PID 3720 wrote to memory of 4872	3720	2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe	89
PID 3720 wrote to memory of 4872	3720	2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe	89
PID 1408 wrote to memory of 2012	1408	udUOzbuvz8gtWqQ.exe	90
PID 1408 wrote to memory of 2012	1408	udUOzbuvz8gtWqQ.exe	90
PID 1408 wrote to memory of 2012	1408	udUOzbuvz8gtWqQ.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_0f7472a971ff9d71d41c52b034542a96_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3720
- C:\Users\Admin\AppData\Local\Temp\udUOzbuvz8gtWqQ.exe
  C:\Users\Admin\AppData\Local\Temp\udUOzbuvz8gtWqQ.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1408
- - C:\Windows\Temp\{CCCDD1DE-DAC0-42A9-8E89-E20A7C6BF6B4}\.cr\udUOzbuvz8gtWqQ.exe
    "C:\Windows\Temp\{CCCDD1DE-DAC0-42A9-8E89-E20A7C6BF6B4}\.cr\udUOzbuvz8gtWqQ.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\udUOzbuvz8gtWqQ.exe" -burn.filehandle.attached=556 -burn.filehandle.self=552
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:2012
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:4872

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
fde16cd2d86e7a48b12fbd388bd82ede

SHA1
a1b7fcc65076dcbbf4a92e95d733a1cc48ff5e5a

SHA256
aab0664c9c905a833c67d75ea27c585ea6f01818794780e4c5c08064e68fb4c8

SHA512
b63cb0dd67a07404163429bec456117f4d44fae5172e403c0caf39f57704222aaf99244ed0a1872c44f4d2cec78cd62cb06d6fdc90080c36ff0261368ddad27a

Download Submit
C:\Users\Admin\AppData\Local\Temp\udUOzbuvz8gtWqQ.exe

Filesize
27.9MB

MD5
e7062b85c3624af82079794729618eca

SHA1
958fe3e8415aa00b4c3350ef42716321c2fafdeb

SHA256
fb3d0466f3754752ca7fd839a09ffe53375ff2c981279fd4bc23a005458f7f5d

SHA512
05101359d2ec99f562ef6ec604f1c342f3e05ab88cf7ff95dfb272a861a4a7872458d6cf279dd8c2d73e247af71e8e8d80123e435ab76a6363cb28411d0f7706

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
C:\Windows\Temp\{CCCDD1DE-DAC0-42A9-8E89-E20A7C6BF6B4}\.cr\udUOzbuvz8gtWqQ.exe

Filesize
847KB

MD5
29bf0d271cc659ddd598c564e3e9adb5

SHA1
7f21ce21bc79ca6df7a27b0090cdb75be75302d3

SHA256
550962c4268923bf764797577346b6922493b925b8d17565186bf4b74295193c

SHA512
db2a9874aebf6ed6026ee4e8cde71d124706dc269e072d9cbdd715429e4decb84413289eed3f0fbc2ba80a2a25e4f0376dc08f30e1cd566c1974bc84a1535823

Download Submit
C:\Windows\Temp\{DEA9FD7B-F8AA-433D-BF68-BB0F17AA8663}\.ba\PythonBA.dll

Filesize
650KB

MD5
67c295f6b2a53365885879907f4aca36

SHA1
0c8e4f9e5af43f0f4c9f42b23c9c19a33011c29a

SHA256
560739d8eb7d23641260ac5950e8693d376b1714b6ae1e202e74e7e2216ff961

SHA512
e8eccf168976a86d5a2bd4be4bb05bd8971afa1f2b3fcd460aac7eda431da0b021b96db71be270be433aa4b2347003dc9e69c43a67c0a7422c8b9a21068a8bb9

Download Submit
C:\Windows\Temp\{DEA9FD7B-F8AA-433D-BF68-BB0F17AA8663}\.ba\SideBar.png

Filesize
50KB

MD5
888eb713a0095756252058c9727e088a

SHA1
c14f69f2bef6bc3e2162b4dd78e9df702d94cdb4

SHA256
79434bd1368f47f08acf6db66638531d386bf15166d78d9bfea4da164c079067

SHA512
7c59f4ada242b19c2299b6789a65a1f34565fed78730c22c904db16a9872fe6a07035c6d46a64ee94501fbcd96de586a8a5303ca22f33da357d455c014820ca0

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads