61e0d9f108d70ea9d7059a48edb968fbc12767133114dbc42536972a7f4c4b69

Analysis

max time kernel
133s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 03:38

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General

Target

2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe
Size

165KB
MD5

b09469a2ac88d8b7fe82d369ffaf0975
SHA1

3e9569438b8d8859fdf8aa64f3036ce6d2e47ef2
SHA256

61e0d9f108d70ea9d7059a48edb968fbc12767133114dbc42536972a7f4c4b69
SHA512

562b5a285d04ca27a117d3a181f3689b9582700baaff71cabcaedd51cb00c8892494fe842c4665806a75fff503cfb308136820dfa9773a6218b1fb05da73da1f
SSDEEP

3072:ZhpAyazIlyazTHsb/YOR8DjDeO2UtDh0D6/pNyzakp4Y2KFNsoaokJk:hZMazqAO6DeOjq2ryzh92yAoMk

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3732	DD4ZTY2f9PSyTTp.exe
1088	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"	2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_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	2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	428	2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe
Token: SeDebugPrivilege	1088	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 428 wrote to memory of 3732	428	2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe	85
PID 428 wrote to memory of 3732	428	2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe	85
PID 428 wrote to memory of 3732	428	2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe	85
PID 428 wrote to memory of 1088	428	2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe	86
PID 428 wrote to memory of 1088	428	2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe	86
PID 428 wrote to memory of 1088	428	2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_b09469a2ac88d8b7fe82d369ffaf0975_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:428
- C:\Users\Admin\AppData\Local\Temp\DD4ZTY2f9PSyTTp.exe
  C:\Users\Admin\AppData\Local\Temp\DD4ZTY2f9PSyTTp.exe
  2⤵
  - Executes dropped EXE
  PID:3732
- 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:1088

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
392KB

MD5
88cbdb3a837a41e4f03854fe6d4d5a7c

SHA1
d7c84da590487d8694a8ce227431a60ec4bbfbbf

SHA256
efc5aa1275e4c6008cfe0f12da9fe918362ac57cf6cc9d91f84bc085dcf58a0f

SHA512
e8e99bd44f536b9fbfe771291ec61e8d23750f4c39360a2624163dccdadc742e3c9e0548fe0269e901b3e3d81dca6d973bdc5cfdadcb5b682673256d3721ef40

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C:\Users\Admin\AppData\Local\Temp\DD4ZTY2f9PSyTTp.exe

Filesize
94KB

MD5
ec5e7403f86990ab23caeeb4955f5ffb

SHA1
c345479d6dc53a102ccb05259c0c858a1ddd7d8e

SHA256
352df104254095ddf925514d99bfb5411c95b5386e90caf06557979f82e16844

SHA512
679957452967a3d3f3f1c55a9a510befa2d31e3bdb825a76540e845667f61775f4d18c3b3493133dd671b380907aaae0dd380b95729a448acf48d95ca0fe5206

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