1d11e372c8d9321b9f460241dcbb19a8fd6da79b6aaf3412bb6270cd6a8d3b6c

Analysis

max time kernel
132s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
30/06/2024, 08:35

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General

Target

2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe
Size

96KB
MD5

8792c38d1954f8258fd9a212d9354493
SHA1

d710bf79499a6da61a5fe05a23bdc4f612d5a327
SHA256

1d11e372c8d9321b9f460241dcbb19a8fd6da79b6aaf3412bb6270cd6a8d3b6c
SHA512

66d2fa8f77b2c8fb272a9a56a620b65715a90e20214bf16d3759040983a67c83d9776341b43b7eb08989007f09f69d7932871338560bf8e618752ce79145b1c8
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTMi4Bep6CU6m8DoconT:ZRpAyazIliazTgi6h6meocoT

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
744	kZCChq2gh21wE5S.exe
4872	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"	2024-06-30_8792c38d1954f8258fd9a212d9354493_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	2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2140	2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe
Token: SeDebugPrivilege	4872	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 744	2140	2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe	82
PID 2140 wrote to memory of 744	2140	2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe	82
PID 2140 wrote to memory of 4872	2140	2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe	83
PID 2140 wrote to memory of 4872	2140	2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe	83
PID 2140 wrote to memory of 4872	2140	2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-30_8792c38d1954f8258fd9a212d9354493_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Users\Admin\AppData\Local\Temp\kZCChq2gh21wE5S.exe
  C:\Users\Admin\AppData\Local\Temp\kZCChq2gh21wE5S.exe
  2⤵
  - Executes dropped EXE
  PID:744
- 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:4872

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
cb5abe4025642025cd0d027fefde4553

SHA1
6529b6f72e21cf140793f75ecf071ce88a1902b8

SHA256
896c93eb865b1d8b6f23f4725602e19efa9e233b6f02f0e085c00a05f83d8851

SHA512
89569da197bc76ecd31e5dfc98c9e19ad504063491b4b9468ffe2ac7c0d266fa5c27eb6b5105da72e88c4e54d1aab47cd1dcaf80ff4911a3a67a99d69ab820cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\kZCChq2gh21wE5S.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/744-13-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads