686d5e165fa58c5f989e168f715df19727cb5c4712ad479f959a1852039f94c1

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08-06-2024 20:00

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe
Size

135KB
MD5

f39103b32640dba3d650eaffa1320f4e
SHA1

5c386ece25dd4a33204d0275c95bbf202a263ee2
SHA256

686d5e165fa58c5f989e168f715df19727cb5c4712ad479f959a1852039f94c1
SHA512

f6f99071eb91dd16e2f1f175ab89c2a9f6392426beb095261fdfdcbe558c04fe9c3afb7f298b252af87ca98a26afc385fbb35d859178360582972d33613a708e
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTfChJjAYXtpcCXPegK+3up8t4i4eXVR:ZRpAyazIliazTKMYXtpcCm+tZ9xf/VF

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3212	7OT3JhFBzIHqqta.exe
2492	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	528	2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe
Token: SeDebugPrivilege	2492	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 528 wrote to memory of 3212	528	2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe	81
PID 528 wrote to memory of 3212	528	2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe	81
PID 528 wrote to memory of 3212	528	2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe	81
PID 528 wrote to memory of 2492	528	2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe	82
PID 528 wrote to memory of 2492	528	2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe	82
PID 528 wrote to memory of 2492	528	2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_f39103b32640dba3d650eaffa1320f4e_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:528
- C:\Users\Admin\AppData\Local\Temp\7OT3JhFBzIHqqta.exe
  C:\Users\Admin\AppData\Local\Temp\7OT3JhFBzIHqqta.exe
  2⤵
  - Executes dropped EXE
  PID:3212
- 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:2492

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
394KB

MD5
c6c0bf859ed9519f9f602cb4bcc992ce

SHA1
97d58c44727e3c3892d23ab6d7c0e94cc21f7e63

SHA256
13cd92df5135113232634f4ee79567ab46648d820b815157fcdf8b978b045962

SHA512
efaec29621bcf7f4894390e53d18fd1fb889efd8b398f4b63f6dd1c107512a79476ed22aadade91cd15cd1e174eeeaeaf6d8e6b1e5b992eb7df653f6474abb02

Download Submit
C:\Users\Admin\AppData\Local\Temp\7OT3JhFBzIHqqta.exe

Filesize
64KB

MD5
ae6ce17005c63b7e9bf15a2a21abb315

SHA1
9b6bdfb9d648fa422f54ec07b8c8ea70389c09eb

SHA256
4a3387a54eeca83f3a8ff1f5f282f7966c9e7bfe159c8eb45444cab01b3e167e

SHA512
c883a5f599540d636efc8c0abc05aab7bad0aa1b10ab507f43f18e0fba905a10b94ff2f1ba10ae0fee15cc1b90a165a768dc078fda0ac27474f0eef66f6a11af

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads