cfa8ccfa38c703f26a05a67df8faa2a9bf8f6e953048bb6066c917cef1d27f09

Analysis

max time kernel
149s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29/09/2024, 04:35

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General

Target

2024-09-29_730f686e563dc0d5fe99d47933d30f89_bkransomware.exe
Size

604KB
MD5

730f686e563dc0d5fe99d47933d30f89
SHA1

e3cf5a420eec96a725f5722d5f403119f0dddfe0
SHA256

cfa8ccfa38c703f26a05a67df8faa2a9bf8f6e953048bb6066c917cef1d27f09
SHA512

56df0b57baa444e2152e2319eba86eec6ec80ffa2405cb4c0115b87da4705c204de2e65e83b55158f5654d6293d600c089cc35a25b1167c9181d8d2493d9bbdd
SSDEEP

12288:AhBA3gckllBigHTtQnwGccqG45lboM67oM:qA3GDBigHTtQnwCqG2NoOM

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
3584	i9h3z93nqzqpnhbl6qv.exe
4744	dyzuvwapk.exe
2672	tzifgugqvf.exe
3840	dyzuvwapk.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\mnzqjjflzdakmnd\xtvpv1lsz	2024-09-29_730f686e563dc0d5fe99d47933d30f89_bkransomware.exe
File created	C:\Windows\mnzqjjflzdakmnd\xtvpv1lsz	i9h3z93nqzqpnhbl6qv.exe
File created	C:\Windows\mnzqjjflzdakmnd\xtvpv1lsz	dyzuvwapk.exe
File created	C:\Windows\mnzqjjflzdakmnd\xtvpv1lsz	tzifgugqvf.exe
File created	C:\Windows\mnzqjjflzdakmnd\xtvpv1lsz	dyzuvwapk.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	i9h3z93nqzqpnhbl6qv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dyzuvwapk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tzifgugqvf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-29_730f686e563dc0d5fe99d47933d30f89_bkransomware.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4744	dyzuvwapk.exe
4744	dyzuvwapk.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
4744	dyzuvwapk.exe
4744	dyzuvwapk.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
4744	dyzuvwapk.exe
4744	dyzuvwapk.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
4744	dyzuvwapk.exe
4744	dyzuvwapk.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe
4744	dyzuvwapk.exe
4744	dyzuvwapk.exe
2672	tzifgugqvf.exe
2672	tzifgugqvf.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3936 wrote to memory of 3584	3936	2024-09-29_730f686e563dc0d5fe99d47933d30f89_bkransomware.exe	82
PID 3936 wrote to memory of 3584	3936	2024-09-29_730f686e563dc0d5fe99d47933d30f89_bkransomware.exe	82
PID 3936 wrote to memory of 3584	3936	2024-09-29_730f686e563dc0d5fe99d47933d30f89_bkransomware.exe	82
PID 4744 wrote to memory of 2672	4744	dyzuvwapk.exe	84
PID 4744 wrote to memory of 2672	4744	dyzuvwapk.exe	84
PID 4744 wrote to memory of 2672	4744	dyzuvwapk.exe	84
PID 3584 wrote to memory of 3840	3584	i9h3z93nqzqpnhbl6qv.exe	85
PID 3584 wrote to memory of 3840	3584	i9h3z93nqzqpnhbl6qv.exe	85
PID 3584 wrote to memory of 3840	3584	i9h3z93nqzqpnhbl6qv.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-29_730f686e563dc0d5fe99d47933d30f89_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-29_730f686e563dc0d5fe99d47933d30f89_bkransomware.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3936
- C:\mnzqjjflzdakmnd\i9h3z93nqzqpnhbl6qv.exe
  "C:\mnzqjjflzdakmnd\i9h3z93nqzqpnhbl6qv.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3584
- - C:\mnzqjjflzdakmnd\dyzuvwapk.exe
    "C:\mnzqjjflzdakmnd\dyzuvwapk.exe"
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3840

C:\mnzqjjflzdakmnd\dyzuvwapk.exe
C:\mnzqjjflzdakmnd\dyzuvwapk.exe
1⤵
- Executes dropped EXE
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4744
- C:\mnzqjjflzdakmnd\tzifgugqvf.exe
  ijzashmphwgv "c:\mnzqjjflzdakmnd\dyzuvwapk.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2672

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:\mnzqjjflzdakmnd\i9h3z93nqzqpnhbl6qv.exe

Filesize
604KB

MD5
730f686e563dc0d5fe99d47933d30f89

SHA1
e3cf5a420eec96a725f5722d5f403119f0dddfe0

SHA256
cfa8ccfa38c703f26a05a67df8faa2a9bf8f6e953048bb6066c917cef1d27f09

SHA512
56df0b57baa444e2152e2319eba86eec6ec80ffa2405cb4c0115b87da4705c204de2e65e83b55158f5654d6293d600c089cc35a25b1167c9181d8d2493d9bbdd

Download Submit
C:\mnzqjjflzdakmnd\xtvpv1lsz

Filesize
6B

MD5
9a9d9def6a2f91b3355e3d7e8b0112a0

SHA1
8e93e9c83ac208d4786f276a67ce9986163760e5

SHA256
7098b25dc3408e0cba2529f2cea95f036a8989c6012f7def3ba06e8e7b56081a

SHA512
16d3245b2ae5e59d5ddd537c92c509adaa08889bde29c68a322c9be9dcd442401034e0f677530f2e643834097f28d28a9370a17f7af7d729d3e5b32b0e543882

Download Submit
C:\mnzqjjflzdakmnd\ypxkkwsr

Filesize
4B

MD5
69ffe8de98d9adbcc0da80dbd9644933

SHA1
95a271bff65373400be46610a41223670b8d6b89

SHA256
4cfe6d31cbbe80b99f7ba30811a59ff78864cd0ef8ef3490952f2ffa458113b8

SHA512
187e46fa3a18e544ffeedfc3e047ba01eb314190bc30160e8a38d24ae89426f42a07ca6b44ea097dbf32a3161966d9e801f7440bedf02265eb298ba722d14dda

Download Submit