5c29c1f0f804397d01bb559f923df7ec349aee0a8b36d52ca06f7276603abb86

Analysis

max time kernel
135s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 08:01

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General

Target

2024-05-16_4f11241575f21e56358a9a2924041406_bkransomware.exe
Size

71KB
MD5

4f11241575f21e56358a9a2924041406
SHA1

2d9db29b3738f5dedd5bb8e485c82c7938086963
SHA256

5c29c1f0f804397d01bb559f923df7ec349aee0a8b36d52ca06f7276603abb86
SHA512

bd6161d5ffae69aa2d8167b8f623c480734ce89cc7930b745f2a2878cd4236194772e7e1eb1deb827ffd41d3630f35ea34854aacce3996f5ec3c0cbdeb6d652c
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTd:ZRpAyazIliazTd

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2936	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"	2024-05-16_4f11241575f21e56358a9a2924041406_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	2024-05-16_4f11241575f21e56358a9a2924041406_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3328	2024-05-16_4f11241575f21e56358a9a2924041406_bkransomware.exe
Token: SeDebugPrivilege	2936	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3328 wrote to memory of 2936	3328	2024-05-16_4f11241575f21e56358a9a2924041406_bkransomware.exe	83
PID 3328 wrote to memory of 2936	3328	2024-05-16_4f11241575f21e56358a9a2924041406_bkransomware.exe	83
PID 3328 wrote to memory of 2936	3328	2024-05-16_4f11241575f21e56358a9a2924041406_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-16_4f11241575f21e56358a9a2924041406_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_4f11241575f21e56358a9a2924041406_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3328
- 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:2936

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

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Downloads

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

Filesize
392KB

MD5
4324703c2db4bf25195153d584df6b73

SHA1
81be42cc8010d26582665053809cd55215b31b11

SHA256
469744612a9ea9b6a83eb0dc59b99f041aba5e224be549b0785887ce6fa2c2e5

SHA512
bcfb94db3220141de7a52aa1fcc1b79e67528225777b08479e6b73df1ad99da638ac75afac5c1328f63f981cbba6d64740df0f621b6d6b719193ef97dac8591d

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C:\Users\Admin\AppData\Local\Temp\QYL6zuy5VXWu2C6.exe

Filesize
71KB

MD5
bd40e50c7686b9ef9352e7447cdb5263

SHA1
b9f60ac98c0d20044ed39ad4b5138f2cd88df0bc

SHA256
4d842a3625d4631cc0b5b160d5352214e3c287e5e331d19bb40042bbc2228722

SHA512
0b1a5a54783ba4d1bb07850868a195e6f2980eebc36e878a66a6082b7ba96600738e702596eea75a1ef95d817ab6209a5ee825b025fb3049b96003b8cb8f9210

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

Replay Monitor

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Downloads