c6c9232a9c08202df6996fe0db98007c32375a5ebd57be498a6650afebabd378

Analysis

max time kernel
144s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2024, 17:50

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General

Target

2024-05-17_f23da0987f847c93191e70c3fb531d60_bkransomware.exe
Size

71KB
MD5

f23da0987f847c93191e70c3fb531d60
SHA1

afeb98af110c642fba1ab1edffcc142c6e7a451a
SHA256

c6c9232a9c08202df6996fe0db98007c32375a5ebd57be498a6650afebabd378
SHA512

154111821f8f67f1ad3cbdd46c9ef43a9b68b3052f4ffcbb22260016f3e206e31275d29f0cd2cad59244b81f253d2f0f593353854a43f58e65e0eb7f76d755e4
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTU:ZRpAyazIliazTU

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3180	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"	2024-05-17_f23da0987f847c93191e70c3fb531d60_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	2024-05-17_f23da0987f847c93191e70c3fb531d60_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2512	2024-05-17_f23da0987f847c93191e70c3fb531d60_bkransomware.exe
Token: SeDebugPrivilege	3180	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2512 wrote to memory of 3180	2512	2024-05-17_f23da0987f847c93191e70c3fb531d60_bkransomware.exe	91
PID 2512 wrote to memory of 3180	2512	2024-05-17_f23da0987f847c93191e70c3fb531d60_bkransomware.exe	91
PID 2512 wrote to memory of 3180	2512	2024-05-17_f23da0987f847c93191e70c3fb531d60_bkransomware.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-17_f23da0987f847c93191e70c3fb531d60_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_f23da0987f847c93191e70c3fb531d60_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2512
- 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:3180

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 --mojo-platform-channel-handle=4020 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:2052

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
789KB

MD5
da7e700dcdd0138da37e3afafd3c6c46

SHA1
a583dfca1d20f62c7e432bd7e7ec441821a99352

SHA256
8b58fff2419e06bc5ab41b2a6f1031070db7390e1f9492b54fc0b825999b76b2

SHA512
2cfb362ffb7dee969ec3c981bfbf0627d6ce667677ce06833c92a6d0af38cc8c8db50ff8c18a790171688f93416922b3a936c824fa0cc9d183938c225d72312b

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

Filesize
71KB

MD5
8a8e3cdc00090fd7c2ed4efc55a447ac

SHA1
5e500574091a79953516e6d65091b73ba7b7fa7f

SHA256
9e04950919742a285c0499cb6841c2c4f70ec479507c632398bea8ec960de7fc

SHA512
43440d485477c8d2fbc771470a713287460232e628f236ebf182b0c09c71d6bf9f922f6854d9c8f2754d5878c7da4cf816834991a9458d72aaa1f23cd603f529

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

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Downloads