022d348a2d96ba6efe72cf4023e5fa5db962d03427fdde37ab57183cab71ac6e

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27-09-2024 14:30

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General

Target

2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe
Size

649KB
MD5

549c9aab07ec05bd3058050b047c269d
SHA1

983ab2b5e70f4585ef2a5e008fac232c9baa4865
SHA256

022d348a2d96ba6efe72cf4023e5fa5db962d03427fdde37ab57183cab71ac6e
SHA512

6ed8fddd164040e23fe514f80d0d15e5d0ecd63e51909a76bee25a6531d608505c593e113972441f3c84df78b2618511d141b1bb31e63e4b0b2c32d8751f3de2
SSDEEP

12288:hS0KVyPjSH4lGf8pHWwb7oeHUrgDpj1NCb+DJfzqMTBikRqXdIn+zUHn3:DKVyP6fRw/crgDlDTDZ86n+ze3

Score

7^/10

discovery persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4608	CTS.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4520	2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe
Token: SeDebugPrivilege	4608	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 4608	4520	2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe	82
PID 4520 wrote to memory of 4608	4520	2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe	82
PID 4520 wrote to memory of 4608	4520	2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_549c9aab07ec05bd3058050b047c269d_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4608

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
392KB

MD5
4e7256b6e6330def11a60101be9278d8

SHA1
d6fdf704bba28404be776152bf836ddc524cb9d4

SHA256
ed260e817abfb3f86123cff025270f8973cb3e5170461e25a8a763dc33cb45fc

SHA512
ea64f215e4b8e69c706aac6cb347f0a7343007b1554344c6030264007653828e6f71b05dc144981f5881662ecdfc4f0f36ca77eec86d2f40b2cf2856eaf39e2a

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C:\Users\Admin\AppData\Local\Temp\q6dMP6cVZVKlgOu.exe

Filesize
649KB

MD5
1100154a6bb90e78eea396c9565fd25c

SHA1
7df33754279fcf81d17a6841f390c854337af857

SHA256
b4e7e216ac861df3e0a283eed04e68102bef25a1bfd955c7590354c6e47f9499

SHA512
9b522960ec65df87ce304c6f79c0cc5b61f5f8ec459295b48e6235c44e012404c7c420d8d09af69a1381b19da8e55abeadd3dce3b8863269ea5d17b9ecd77572

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads