e114396505ed4928d8dbc11ba61f156492182375db563b7d72c239a7c59de4fc

Analysis

max time kernel
141s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2024 19:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-31_940e32111bba4b580e3df9ed85aefb5e_bkransomware.exe
Size

71KB
MD5

940e32111bba4b580e3df9ed85aefb5e
SHA1

42cc8d1c20b3b71afed1ec9ea07e66d7a43c8233
SHA256

e114396505ed4928d8dbc11ba61f156492182375db563b7d72c239a7c59de4fc
SHA512

afdbff49d2c8c3516de6c3c18ef1093f74c8c3068f1a9ab3425570bf673cee51798a1f905a9492250381877a6e79be1981181ccc3ceab6818aa6e01beeb44590
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTq:ZRpAyazIliazTq

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3048	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"	2024-05-31_940e32111bba4b580e3df9ed85aefb5e_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	2024-05-31_940e32111bba4b580e3df9ed85aefb5e_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5064	2024-05-31_940e32111bba4b580e3df9ed85aefb5e_bkransomware.exe
Token: SeDebugPrivilege	3048	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5064 wrote to memory of 3048	5064	2024-05-31_940e32111bba4b580e3df9ed85aefb5e_bkransomware.exe	91
PID 5064 wrote to memory of 3048	5064	2024-05-31_940e32111bba4b580e3df9ed85aefb5e_bkransomware.exe	91
PID 5064 wrote to memory of 3048	5064	2024-05-31_940e32111bba4b580e3df9ed85aefb5e_bkransomware.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-31_940e32111bba4b580e3df9ed85aefb5e_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_940e32111bba4b580e3df9ed85aefb5e_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5064
- 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:3048

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=3704 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:3420

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
789KB

MD5
1078efccb162dcb66986c6f2ea7f8d2d

SHA1
848434c878aae22eb6e85c6e3082583d40807dac

SHA256
ba4ea4e98d57a231440694f586c718b9d174885a76d1ca4c2557a2047dbc5461

SHA512
d376d02ccf05d10da6e8ca7b5bee5b85c47c27f104b10e0105919e2bc3e3e8383f14c8c6e7b376272897cea15c06f5ca3488e6ab6b960adffd02b924a4e27def

Download Submit
C:\Users\Admin\AppData\Local\Temp\KywV7OmqVXmlfms.exe

Filesize
71KB

MD5
470cb986c04610b71d4e1d4de397c631

SHA1
4ef25fe0979e760f83551883d7509219acea706e

SHA256
9f6a85c771835785bca7e44d0ce4e47957f33dc1b8cfa3ea33555832189255a4

SHA512
c6b718133147cb07fc138396ed4ac42ff42076a20e0a37859351f5e4c21ec3907c0023d3268c44dc80beabd42acf3da65a4545f1f9d144053edd8eede37fb985

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