f82b63410d14c666ce9186b623d8a711dd6424d4831f1e775cc9b922a0de5e06

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
20/06/2024, 12:55

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General

Target

2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe
Size

135KB
MD5

468d816677c7d019a42d3b3237edaa03
SHA1

78b52296b54d0ad849ed742ec43794440fcc3d74
SHA256

f82b63410d14c666ce9186b623d8a711dd6424d4831f1e775cc9b922a0de5e06
SHA512

2ca9ecda91f96c9961280e74cc4d3e8c05df3fcc1af7f5d79d3f13c210f54d43ef1e88592f60b1d7cb5d46f857a2cf1ace071c0a6e2957bc18708495ed7d5fae
SSDEEP

3072:ZRpAyazIliazTQNVkZ3KY1I4Vq1NFlQ8Jw:xZ8az0GKYPw1NnQ9

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2252	7jCVPcVi2ygBAsC.exe
1672	CTS.exe

Loads dropped DLL 2 IoCs

pid	Process
2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe
2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.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"	2024-06-20_468d816677c7d019a42d3b3237edaa03_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe
Token: SeDebugPrivilege	1672	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2252	2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe	28
PID 2240 wrote to memory of 2252	2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe	28
PID 2240 wrote to memory of 2252	2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe	28
PID 2240 wrote to memory of 2252	2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe	28
PID 2240 wrote to memory of 1672	2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe	29
PID 2240 wrote to memory of 1672	2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe	29
PID 2240 wrote to memory of 1672	2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe	29
PID 2240 wrote to memory of 1672	2240	2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-20_468d816677c7d019a42d3b3237edaa03_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\7jCVPcVi2ygBAsC.exe
  C:\Users\Admin\AppData\Local\Temp\7jCVPcVi2ygBAsC.exe
  2⤵
  - Executes dropped EXE
  PID:2252
- 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:1672

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:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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\Users\Admin\AppData\Local\Temp\7jCVPcVi2ygBAsC.exe

Filesize
64KB

MD5
e97c622b03fb2a2598bf019fbbe29f2c

SHA1
32698bd1d3a0ff6cf441770d1b2b816285068d19

SHA256
5c1af46c7300e87a73dacf6cf41ce397e3f05df6bd9c7e227b4ac59f85769160

SHA512
db70c62fb35a8e5b005f13b57c1ebbf6c465f6ff0524422294c43e27fb4aa79379dc1e300ad11dc2354405c43b192ae06b91c0f525a1f2617e4d14673651a87d

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads