8dc53ec5f43bca8d6549da6cf67b84ade2d8b2f3e7b38c728662e2b16edf617c

Analysis

max time kernel
132s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
04/07/2024, 15:09

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-07-04_bb4627e18e75d6372e91afca246fe3f6_bkransomware.exe
Size

71KB
MD5

bb4627e18e75d6372e91afca246fe3f6
SHA1

6155f1a11bf259ae7d66e198e8a0af8894e74681
SHA256

8dc53ec5f43bca8d6549da6cf67b84ade2d8b2f3e7b38c728662e2b16edf617c
SHA512

4cc9502a8e7df9b7a56178a9385c95e461f239904618b4b31e1116ce87d0c2687474a5bb6b861c9783166ee7cbab4830f49ffe9d5149e3ea17cb4ede08ea5393
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTR:ZRpAyazIliazTR

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1980	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"	2024-07-04_bb4627e18e75d6372e91afca246fe3f6_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	2024-07-04_bb4627e18e75d6372e91afca246fe3f6_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4912	2024-07-04_bb4627e18e75d6372e91afca246fe3f6_bkransomware.exe
Token: SeDebugPrivilege	1980	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 1980	4912	2024-07-04_bb4627e18e75d6372e91afca246fe3f6_bkransomware.exe	89
PID 4912 wrote to memory of 1980	4912	2024-07-04_bb4627e18e75d6372e91afca246fe3f6_bkransomware.exe	89
PID 4912 wrote to memory of 1980	4912	2024-07-04_bb4627e18e75d6372e91afca246fe3f6_bkransomware.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-07-04_bb4627e18e75d6372e91afca246fe3f6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-04_bb4627e18e75d6372e91afca246fe3f6_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4912
- 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:1980

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 --field-trial-handle=1416,i,17949988676391029604,13756926835471203788,262144 --variations-seed-version --mojo-platform-channel-handle=4428 /prefetch:8
1⤵
PID:2620

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
14b7796e775e3db98541c1d252f85482

SHA1
d55dcf9eaa28894ad9df18cf074b08e897751d98

SHA256
d2414a1b542f42e82474fee77340a115701579165fe2b756842e70ec1132b35d

SHA512
f3a4fe072cbb5f1c3bb24954a5a7b8eef6b5b21b1e7ccad1ecab69a7849eeb824ebfe1e869bb85eed547768bd0cbfb11fa944ed32210fc887791df8381e4c5d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\KczET7VH41xY6Dq.exe

Filesize
71KB

MD5
d41089dde752970fb855d3895da0a5d2

SHA1
69d522ecc7568b80f5067849e973145c2e9d745f

SHA256
cc2b94eb34c11be6bff7861fb3f36811086b821e801bef28c1dae7c4a540b62e

SHA512
2f9bce61870668734eec697180a76c9e5328d8e926fa57925bdb927eda822263c63cbe604853569982632e8d62dcdb39aad7ff1ac5bc84c53e8f6956fa02257a

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