0e08d5d121dd1ba0eaf62c44ed65f25b9c317f818bd0326ff0bcffcc628ea816

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 23:32

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General

Target

2024-06-01_dac56bf2fabd4976f6c49e158f5dc7e3_bkransomware.exe
Size

71KB
MD5

dac56bf2fabd4976f6c49e158f5dc7e3
SHA1

ec34acf6cb6eddfd75b7bf5674297d4771603214
SHA256

0e08d5d121dd1ba0eaf62c44ed65f25b9c317f818bd0326ff0bcffcc628ea816
SHA512

c5a0b7ab1ce14d850ea04d06f593ff5f8722219b99acfb08a97036322c4d595b2d43d9d22f9e492117e00c51356b0ee5ee899525038facde5650adb231d2e088
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTm:ZRpAyazIliazTm

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2156	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"	2024-06-01_dac56bf2fabd4976f6c49e158f5dc7e3_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	2024-06-01_dac56bf2fabd4976f6c49e158f5dc7e3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3924	2024-06-01_dac56bf2fabd4976f6c49e158f5dc7e3_bkransomware.exe
Token: SeDebugPrivilege	2156	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3924 wrote to memory of 2156	3924	2024-06-01_dac56bf2fabd4976f6c49e158f5dc7e3_bkransomware.exe	81
PID 3924 wrote to memory of 2156	3924	2024-06-01_dac56bf2fabd4976f6c49e158f5dc7e3_bkransomware.exe	81
PID 3924 wrote to memory of 2156	3924	2024-06-01_dac56bf2fabd4976f6c49e158f5dc7e3_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-01_dac56bf2fabd4976f6c49e158f5dc7e3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_dac56bf2fabd4976f6c49e158f5dc7e3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3924
- 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:2156

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
393KB

MD5
c6dca34ea3407a232e9aeb4f06fc5250

SHA1
9e1be020106554027b6719dd364b23ab003d5bba

SHA256
e1ed222ba99026fbf8c41ea0739ae37d9163d7da4f5cedb3735c686c387d0ba1

SHA512
d747b7de55954fb3b4eb2d3eeb6a282e723bb2116c7573cc58a915ff1e55ba849c2bb8b073d0a6c963311215a980c8fef5994f897468139bf7e4452e2ff3ad80

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C:\Users\Admin\AppData\Local\Temp\OfkCWldjD4vtBLb.exe

Filesize
71KB

MD5
781477e51084cdfa20c114a408036102

SHA1
67b621fdbe6a03671eb5e468ec0e1be4e2774afe

SHA256
ed68f330b043faf6dcefb48b992d44a1d035c0c98f9e8494fe75fe27d0e11641

SHA512
c2e015fa64c330e20e33986794e1ded1c5591b7f4f5193e98d49e25610ef855882a345f5f175f0fbb5eda009a0125b04f58668588fb694905f00ec871909046e

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads