ac1c04afa2cf9757f17b8ae0180d78c0ce079c7c4424574b8c9cf34ab1917d18

Analysis

max time kernel
140s
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
30/04/2024, 22:23

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe
Size

71KB
MD5

0dc25a50628cc1cb0367237388d2184f
SHA1

b4f3fd6dfad94198e78dbe1d306d958b8afb7d9a
SHA256

ac1c04afa2cf9757f17b8ae0180d78c0ce079c7c4424574b8c9cf34ab1917d18
SHA512

aad776888d3894e572e67e9b6386f8bf53b4b7e8c1dce3d8d820d780f44a98076b190bc28e63701790120a71ebc3fd045e6aa2144deedec9128b98f65643e53e
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTk:ZhpAyazIlyazTk

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4524	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"	2024-04-30_0dc25a50628cc1cb0367237388d2184f_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	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4780	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe
Token: SeDebugPrivilege	4524	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 4524	4780	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe	83
PID 4780 wrote to memory of 4524	4780	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe	83
PID 4780 wrote to memory of 4524	4780	2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_0dc25a50628cc1cb0367237388d2184f_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4780
- 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:4524

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
395KB

MD5
52616aeffb80def29eca80376d9ac7d8

SHA1
5d0aa6f4280a0a3ef09c38b92a0703b85196d3cc

SHA256
47566650f62e69baa6d78037176c6484b66322b6c060023572b0340af03ad431

SHA512
90999d626112a672a4d8bbb460873289399db0ee81881ecb8cb94efa45431f92f4c779d61db95665d2b5a16fcacba113dfa2fe2d8112efbab7a0f0814a9e11c1

Download Submit
C:\Users\Admin\AppData\Local\Temp\oMV3KXloviE7Pg0.exe

Filesize
71KB

MD5
87bb768b67b0893c16056c85572bc495

SHA1
8bbe3608686e761d143ef2ded758bd7da66cccab

SHA256
5e9347fa7e000855ff96ad2c4cf646b6c632530f61c60571b459850991400d9c

SHA512
6eacdb490f173c45bac5ea1769b5e0c24235d92dd4c43b6edc7542c2150821e87b9d39b8f4cc25f845cc66718352f9b5126ef05dd38351b4ee273422c22bff4e

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

Replay Monitor

Loading Replay Monitor...

Downloads