9b72c3dc86282139d039f45ee6ce6ee546a7d9c209fb9ca4736c5b05774b3f3c

Analysis

max time kernel
92s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 00:28

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General

Target

2024-06-04_9d907de961e3f0f14fe3da905c77122c_bkransomware.exe
Size

71KB
MD5

9d907de961e3f0f14fe3da905c77122c
SHA1

4282c265d224adc4fad02171c0a34ff99872bfc8
SHA256

9b72c3dc86282139d039f45ee6ce6ee546a7d9c209fb9ca4736c5b05774b3f3c
SHA512

8d2614bea71007996af00fd0ae794d4cd86802e82278786b3c0bb4663986a6bb3639998d5a1d8d649480633c1f161272d26b11ce75b0011fdf2717ce8c0896a6
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTB:ZRpAyazIliazTB

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2396	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"	2024-06-04_9d907de961e3f0f14fe3da905c77122c_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-06-04_9d907de961e3f0f14fe3da905c77122c_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	2024-06-04_9d907de961e3f0f14fe3da905c77122c_bkransomware.exe
Token: SeDebugPrivilege	2396	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2396	2660	2024-06-04_9d907de961e3f0f14fe3da905c77122c_bkransomware.exe	84
PID 2660 wrote to memory of 2396	2660	2024-06-04_9d907de961e3f0f14fe3da905c77122c_bkransomware.exe	84
PID 2660 wrote to memory of 2396	2660	2024-06-04_9d907de961e3f0f14fe3da905c77122c_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-06-04_9d907de961e3f0f14fe3da905c77122c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_9d907de961e3f0f14fe3da905c77122c_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2660
- 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:2396

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
68fa0a26341c518ceb1f0d636332f2ee

SHA1
d3c518788a9e112ba74f1515b49d44d7f27ef091

SHA256
d7094c8cd68925514e57873c45d6ba5f6a73f7c148c961ad4de200b0dd376cf8

SHA512
05e9ac6e3ba0d958ca5850593035c7af52dc1ab61cba2d76043d02e541eb71fdb3ba693d0aab91d27e13adff356f135007b257fb313e469e81dd22e430203ba5

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C:\Users\Admin\AppData\Local\Temp\yn9uBuKxK3AFeXa.exe

Filesize
71KB

MD5
ca596862678afef21bbf23fc18842e51

SHA1
e06ee5064eec590dd5146c843beff7cc70b899bf

SHA256
446db7674e15efb1f9470f7900853d8332684ac27f892b6eb99753ac28e9b069

SHA512
ef8b50f5e5c4af926cb4b6165338245f4e63575527d7eabc0b6c904ce1b1f7aadbcb9c7e3ec54bc2b67ae6cfb03de66fa7227aceb89206d58f8aaca9046fdad1

Download Submit
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