c96e150e4868f986bbc68d02f91e02fd58c84abf3737ac01fb93a2c51d54c09b

Analysis

max time kernel
150s
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
22/08/2024, 04:22

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General

Target

2024-08-22_13e0b960397b452b98d73e1b292003f2_bkransomware.exe
Size

594KB
MD5

13e0b960397b452b98d73e1b292003f2
SHA1

155c62579b07aa4e23b6858e7628fc5c446fb131
SHA256

c96e150e4868f986bbc68d02f91e02fd58c84abf3737ac01fb93a2c51d54c09b
SHA512

947582b2e2f22ed5d592a87f9b5d111b441d8c762b1bc80191910494e5afc7a142f50e241a522714ef4f2c0caeeaa1fb1821b0f5bceafc591910f3f2fdf469c4
SSDEEP

12288:qLmbCNuNL06qEAKlkE8Uuy8umAcrSzg7ju1:qDuNL03EAKlkE8U6icrN7jS

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
2696	rwxkr3z9fxkueuh0nzarefat.exe
3544	rcrpxzpa.exe
3956	brspfeypvkjd.exe
4704	rcrpxzpa.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\dqsmhjizeieygs\zun7qkzs	2024-08-22_13e0b960397b452b98d73e1b292003f2_bkransomware.exe
File created	C:\Windows\dqsmhjizeieygs\zun7qkzs	rwxkr3z9fxkueuh0nzarefat.exe
File created	C:\Windows\dqsmhjizeieygs\zun7qkzs	rcrpxzpa.exe
File created	C:\Windows\dqsmhjizeieygs\zun7qkzs	brspfeypvkjd.exe
File created	C:\Windows\dqsmhjizeieygs\zun7qkzs	rcrpxzpa.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	rwxkr3z9fxkueuh0nzarefat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rcrpxzpa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	brspfeypvkjd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-22_13e0b960397b452b98d73e1b292003f2_bkransomware.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3544	rcrpxzpa.exe
3544	rcrpxzpa.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3544	rcrpxzpa.exe
3544	rcrpxzpa.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3544	rcrpxzpa.exe
3544	rcrpxzpa.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3544	rcrpxzpa.exe
3544	rcrpxzpa.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3544	rcrpxzpa.exe
3544	rcrpxzpa.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe
3956	brspfeypvkjd.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2696	2860	2024-08-22_13e0b960397b452b98d73e1b292003f2_bkransomware.exe	83
PID 2860 wrote to memory of 2696	2860	2024-08-22_13e0b960397b452b98d73e1b292003f2_bkransomware.exe	83
PID 2860 wrote to memory of 2696	2860	2024-08-22_13e0b960397b452b98d73e1b292003f2_bkransomware.exe	83
PID 3544 wrote to memory of 3956	3544	rcrpxzpa.exe	85
PID 3544 wrote to memory of 3956	3544	rcrpxzpa.exe	85
PID 3544 wrote to memory of 3956	3544	rcrpxzpa.exe	85
PID 2696 wrote to memory of 4704	2696	rwxkr3z9fxkueuh0nzarefat.exe	89
PID 2696 wrote to memory of 4704	2696	rwxkr3z9fxkueuh0nzarefat.exe	89
PID 2696 wrote to memory of 4704	2696	rwxkr3z9fxkueuh0nzarefat.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-08-22_13e0b960397b452b98d73e1b292003f2_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-22_13e0b960397b452b98d73e1b292003f2_bkransomware.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860
- C:\dqsmhjizeieygs\rwxkr3z9fxkueuh0nzarefat.exe
  "C:\dqsmhjizeieygs\rwxkr3z9fxkueuh0nzarefat.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\dqsmhjizeieygs\rcrpxzpa.exe
    "C:\dqsmhjizeieygs\rcrpxzpa.exe"
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4704

C:\dqsmhjizeieygs\rcrpxzpa.exe
C:\dqsmhjizeieygs\rcrpxzpa.exe
1⤵
- Executes dropped EXE
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3544
- C:\dqsmhjizeieygs\brspfeypvkjd.exe
  xxecsxgknsxb "c:\dqsmhjizeieygs\rcrpxzpa.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\dqsmhjizeieygs\jenfxbtmprh

Filesize
4B

MD5
8f71c325d988e0182895c49d261a227b

SHA1
22ef6e5aedb90ff7422ff05838012f83760b4184

SHA256
05b350071ef29b1dff4bc857cf9d47846d9f4ce9750d9eda2179acf0929ba2be

SHA512
bfc174f2fa7465e15fee04e8a6cf4e432aa7c8e9eb8343089d7aa3a422a470cb55fbb0ae03e9c3cf3c2798dff9fd7229c64914dce64e7678f286b509ddd09ba9

Download Submit
C:\dqsmhjizeieygs\rwxkr3z9fxkueuh0nzarefat.exe

Filesize
594KB

MD5
13e0b960397b452b98d73e1b292003f2

SHA1
155c62579b07aa4e23b6858e7628fc5c446fb131

SHA256
c96e150e4868f986bbc68d02f91e02fd58c84abf3737ac01fb93a2c51d54c09b

SHA512
947582b2e2f22ed5d592a87f9b5d111b441d8c762b1bc80191910494e5afc7a142f50e241a522714ef4f2c0caeeaa1fb1821b0f5bceafc591910f3f2fdf469c4

Download Submit
C:\dqsmhjizeieygs\zun7qkzs

Filesize
12B

MD5
25ab849e35f0a9113402c523a29b381e

SHA1
9fdd84a6c8616440b0424f8ee45420c1d304f32c

SHA256
edfe17cdb077fb9e479518fc5925e20c6a4de77f4d8606f41923100a8a058b36

SHA512
5f93c1a12cc6d52e6edae5dd42e1449e13aedc88adaeb8bb46d58fa2c671c7bcaef73b7013dfcce3ddaba68ad2f515d311dd70db82a826777d9b61ee1bc2f5b8

Download Submit