d9dfdc2f41479782868e7329e988f5731ad7449c96ec2fbbaa5e6a058d424d73

Analysis

max time kernel
133s
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
24/05/2024, 09:04

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General

Target

2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe
Size

233KB
MD5

0602adffa199c4db6b7033938771df93
SHA1

2f755f123490cf6c71f551ee63fb8dea660607f6
SHA256

d9dfdc2f41479782868e7329e988f5731ad7449c96ec2fbbaa5e6a058d424d73
SHA512

783b77b541c5b09c85354daf2bd4c1a7f4d89026431b8db52c5684cde7c7ff4439d2b522927106c984a7bc3b09a27671cef5ef44346a88c2c54751dce08e1844
SSDEEP

6144:xZ8az3eGPlZlJIuGlJTCv4m/37aZFx1JQzrcno63OciypJ:xC0uGPXv8Cv4m/LaZFNYxIOcNJ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5044	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"	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4616	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe
Token: SeDebugPrivilege	5044	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 5044	4616	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe	91
PID 4616 wrote to memory of 5044	4616	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe	91
PID 4616 wrote to memory of 5044	4616	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4616
- 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:5044

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=1288,i,11746347647270949551,7786733067759450703,262144 --variations-seed-version --mojo-platform-channel-handle=3940 /prefetch:8
1⤵
PID:2500

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
394KB

MD5
fd54ebc42e81e19adf928edd9e92685c

SHA1
6d6a7a10569a56a045e6b9d5f3f323c2221978a9

SHA256
c16508b5a276c205cbca78b8d66518aae4a31661c4e5c850ec14c022c1f6b55d

SHA512
3c899b57c0ea4a191bc0f8eb295bb6b72527f22310ef58ecb38272aab643fc85734bdd33d578fd345e56df647db9479e4828d7829cf7715cc448fbf2b92b732e

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C:\Users\Admin\AppData\Local\Temp\BnkL4GR9AHYZFMH.exe

Filesize
233KB

MD5
a7d6ae40dc69a0c5c6bbba05420b68a4

SHA1
e06bab6db0f20ce0410d29b5cab395d758c2d19f

SHA256
7727bed72d0896cce49d3868767d63b9d7fe04a13aad11f207ea9fb42a523278

SHA512
991e6f43e8bfd3212e26bc3eb63b2b57d5e1ef90d829a2053acbd205eb9e0e732ed47bb2165d5bf25e08e9d3d17b27b3dd44bbfe9c3778682ac780d8418018b5

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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