5ef24d1b41949d0697c3e772162b58f8b8323f4bfc9c66a640f859bcf64184b0

Analysis

max time kernel
94s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
10-07-2024 06:22

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General

Target

2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe
Size

96KB
MD5

0fd50ad5b522ce92f4dbd00d561c69cc
SHA1

78ff46c6ca996944fbc4e5cee42ccd07fe4985ff
SHA256

5ef24d1b41949d0697c3e772162b58f8b8323f4bfc9c66a640f859bcf64184b0
SHA512

86e7640e05b4b2ba366625f8ca0eef5a0c04b7faeccbbf0f5a5f842d41644725c6102647c46f05e8019764113046afec08fd18e02a051fde0efc8b49519709af
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTn7g5MnRl7gJwl:ZhpAyazIlyazTndnX7qwl

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
5032	3TrO7Oe9qcLE2np.exe
2648	CTS.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"	2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5104	2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe
Token: SeDebugPrivilege	2648	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5104 wrote to memory of 5032	5104	2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe	82
PID 5104 wrote to memory of 5032	5104	2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe	82
PID 5104 wrote to memory of 2648	5104	2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe	83
PID 5104 wrote to memory of 2648	5104	2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe	83
PID 5104 wrote to memory of 2648	5104	2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-10_0fd50ad5b522ce92f4dbd00d561c69cc_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5104
- C:\Users\Admin\AppData\Local\Temp\3TrO7Oe9qcLE2np.exe
  C:\Users\Admin\AppData\Local\Temp\3TrO7Oe9qcLE2np.exe
  2⤵
  - Executes dropped EXE
  PID:5032
- 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:2648

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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
394KB

MD5
bc139bc4de90135952816d9047718458

SHA1
378e23caaa8b43e79ae2c18690619785c0278434

SHA256
5f02435ba9a953b3f85467d6ec6fa92c1f91e940bc77d67b5f1e180324782245

SHA512
3d338a0164f37d67085ffb502eb89a32f791e108fe738ec45992aaee6e830be3605886126125d075a38ee0e692180a200d4732a3567a82a33c75e83b7e356a13

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C:\Users\Admin\AppData\Local\Temp\3TrO7Oe9qcLE2np.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/5032-11-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads