8622273bd77fad849af678376eea4d717183eb34c9af765f4579fbe2c5cc8a37

Analysis

max time kernel
132s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 06:43

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-01_ba18e1bf02a870aaac343c0d15f0b6b0_bkransomware.exe
Size

71KB
MD5

ba18e1bf02a870aaac343c0d15f0b6b0
SHA1

cc461164fe7fb334e286cf29806dd46cb9f26302
SHA256

8622273bd77fad849af678376eea4d717183eb34c9af765f4579fbe2c5cc8a37
SHA512

26abd78f50d1136b753805eb88bb7c55aaffab13744aa0deb65467b528f7046b36d14a67120a646cd2bdee23456d60c8c0c46fbb5676ba20355ba131eb5b147e
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTWDz:ZRpAyazIliazT2z

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1436	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"	2024-06-01_ba18e1bf02a870aaac343c0d15f0b6b0_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	2024-06-01_ba18e1bf02a870aaac343c0d15f0b6b0_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3240	2024-06-01_ba18e1bf02a870aaac343c0d15f0b6b0_bkransomware.exe
Token: SeDebugPrivilege	1436	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 1436	3240	2024-06-01_ba18e1bf02a870aaac343c0d15f0b6b0_bkransomware.exe	92
PID 3240 wrote to memory of 1436	3240	2024-06-01_ba18e1bf02a870aaac343c0d15f0b6b0_bkransomware.exe	92
PID 3240 wrote to memory of 1436	3240	2024-06-01_ba18e1bf02a870aaac343c0d15f0b6b0_bkransomware.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-06-01_ba18e1bf02a870aaac343c0d15f0b6b0_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_ba18e1bf02a870aaac343c0d15f0b6b0_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3240
- 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:1436

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4040,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=4004 /prefetch:8
1⤵
PID:4952

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
392KB

MD5
9923ebf4e718e770764c4a4e6dd29569

SHA1
bed03b6b9846d284b8a92a08cd63cc4f5198ee95

SHA256
08141f34421d160d542c19858e4dd4c60f13d9d6139df2d1a995977d6b024089

SHA512
9a10182857d3beee38ae57c141a98b8c0ca248152e1fc4adee0b84652b4dc4eb689364304827ee59181445776c2d18b32ae839ad0ec8a3dea5d4a1f27c30d8df

Download Submit
C:\Users\Admin\AppData\Local\Temp\wsmqrRa1OMy0k3s.exe

Filesize
71KB

MD5
d0c8e8888005e16f0e3629a226c2830d

SHA1
2d6bed5e918c38366b9a08bb8650b12b772b87c1

SHA256
3f0a39498740272b14d8c51f1e22e67493f8998782ddfb083d92d69d149e1eda

SHA512
e9f00b1bc58069dfecf8a80b5272c95a95528db8f7228fbf48804e927e58963c064e793dc41c3a3695199c6678e37cb1a61ddfffd5f737b5beb8872aec332d3b

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