f798ed4bf2a4362e8fc52f9ff3c3b3a3767ddaab6e186093b536615683fa4703

Analysis

max time kernel
92s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 11:30

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-06-09_537ad1076b45e60d5787f14b7347a683_bkransomware.exe
Size

76KB
MD5

537ad1076b45e60d5787f14b7347a683
SHA1

42c21d45bcaf434890d81607169a22ccaf170ac6
SHA256

f798ed4bf2a4362e8fc52f9ff3c3b3a3767ddaab6e186093b536615683fa4703
SHA512

0de4ea8f0604d1938cadb83189af524965dc76c456008eaea1fd826ca0fd06a3b246a3f2e5d86227528e9b3880a098e8cf0536b4ee0d18bf2d9c91ad54e0b45f
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTZQn8h:ZRpAyazIliazTi4

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1516	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"	2024-06-09_537ad1076b45e60d5787f14b7347a683_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	2024-06-09_537ad1076b45e60d5787f14b7347a683_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1624	2024-06-09_537ad1076b45e60d5787f14b7347a683_bkransomware.exe
Token: SeDebugPrivilege	1516	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 1516	1624	2024-06-09_537ad1076b45e60d5787f14b7347a683_bkransomware.exe	82
PID 1624 wrote to memory of 1516	1624	2024-06-09_537ad1076b45e60d5787f14b7347a683_bkransomware.exe	82
PID 1624 wrote to memory of 1516	1624	2024-06-09_537ad1076b45e60d5787f14b7347a683_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-09_537ad1076b45e60d5787f14b7347a683_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_537ad1076b45e60d5787f14b7347a683_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624
- 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:1516

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
bbf31dc720a00508afa4175d6dd23c8b

SHA1
e550e08ec6ff2e93b297ab08bb47535d42f9ad2e

SHA256
9720d7e7d567d4dce79197e4aadca1028b85742d73b1b014db895226a000113a

SHA512
62842fe0d0fb29a4fdccdb1d84638f5ca5348d203d4bdfe842d04365fd03acb612512273f2edd2a89aa8d2ebeecfad424d52febcf21d30fc1c40701037d3da51

Download Submit
C:\Users\Admin\AppData\Local\Temp\3oqewA0EwDguAEg.exe

Filesize
76KB

MD5
03f8fe9f52fb836011d40a5e397fecd8

SHA1
fa719df0d42c7e3181b2d6ffd39da7308a9d3606

SHA256
1ebae0d2b5362ef684b1c450156ceb49f42b2a20ef5a2bb712ffb318cfab79df

SHA512
57acc9742077aa290333cdfdebf8c5a2ebb84f27febdbe167c5f1400ae7daaf90f337dd4bf109d1699bd7edb05a6222e9af7101131267df97dc128272ad2eca0

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