0994fcad3e804021386d0d766e118ee5f126728ea8621475d34847c8b02be801

Analysis

max time kernel
95s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 10:03

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General

Target

2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe
Size

96KB
MD5

af287c3a9d69e0cea586396b550ed5ea
SHA1

7fff86f013b044725bffeee931e572ce037e4977
SHA256

0994fcad3e804021386d0d766e118ee5f126728ea8621475d34847c8b02be801
SHA512

2e4789b4a914f809933c02c5f1a1aff756ad82079fb653bbb95a4df3efbd959ad002c0ff0b19d7ab644b6bc3ae948530bae4a228992200ce62d904e98e154c0f
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTRQYPLnpyHxz1:ZRpAyazIliazTRQmcxz1

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2104	nIcO0xsYgz7RSmz.exe
804	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"	2024-06-09_af287c3a9d69e0cea586396b550ed5ea_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	2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2848	2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe
Token: SeDebugPrivilege	804	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2104	2848	2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe	84
PID 2848 wrote to memory of 2104	2848	2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe	84
PID 2848 wrote to memory of 804	2848	2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe	86
PID 2848 wrote to memory of 804	2848	2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe	86
PID 2848 wrote to memory of 804	2848	2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_af287c3a9d69e0cea586396b550ed5ea_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Users\Admin\AppData\Local\Temp\nIcO0xsYgz7RSmz.exe
  C:\Users\Admin\AppData\Local\Temp\nIcO0xsYgz7RSmz.exe
  2⤵
  - Executes dropped EXE
  PID:2104
- 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:804

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
77d459fb845d254ee74601e44757e199

SHA1
7d41d373abca4ed756bfdffd4b448b277e08d6bf

SHA256
4da15205feb89a7c72701b22ed920c62aa77381dda982525c4a130bab2a133a3

SHA512
b62411509c8dc0fa7bb3fe2ad9d7b4639d8a158ccc6323285cb27d84954437baa2e64c2a07b25de16cd69ca4ee6f9cf820052b37812b782a9edf6917be49e6fc

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C:\Users\Admin\AppData\Local\Temp\nIcO0xsYgz7RSmz.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/2104-12-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads