58d5e559f33196b20e30ce41a8e96076f461cb391289ff5d603c38c1f39e3317

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/06/2024, 08:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-14_eb79b9c170411851ae051a26280fd4be_bkransomware.exe
Size

71KB
MD5

eb79b9c170411851ae051a26280fd4be
SHA1

421e3a09854142c2efee9ba6f99d4d823a6534e1
SHA256

58d5e559f33196b20e30ce41a8e96076f461cb391289ff5d603c38c1f39e3317
SHA512

864c053fb1ef6e500fba6b1b282be75b5b8838d7a4e5b174f97349b2bbae9714107a01e1e60c184052214780fe6e0884a83ed73895e72e0b1effccde458cf2c8
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT8:ZhpAyazIlyazT8

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2364	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"	2024-06-14_eb79b9c170411851ae051a26280fd4be_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	2024-06-14_eb79b9c170411851ae051a26280fd4be_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	2024-06-14_eb79b9c170411851ae051a26280fd4be_bkransomware.exe
Token: SeDebugPrivilege	2364	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 2364	2044	2024-06-14_eb79b9c170411851ae051a26280fd4be_bkransomware.exe	28
PID 2044 wrote to memory of 2364	2044	2024-06-14_eb79b9c170411851ae051a26280fd4be_bkransomware.exe	28
PID 2044 wrote to memory of 2364	2044	2024-06-14_eb79b9c170411851ae051a26280fd4be_bkransomware.exe	28
PID 2044 wrote to memory of 2364	2044	2024-06-14_eb79b9c170411851ae051a26280fd4be_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-14_eb79b9c170411851ae051a26280fd4be_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_eb79b9c170411851ae051a26280fd4be_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2044
- 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:2364

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\Temp\4N6ZwVkykcSv1lp.exe

Filesize
71KB

MD5
a6c2962d1dfef8da2934b4837c5ef74f

SHA1
0b899431a489961204d296aa7cebe1dc24fa5de2

SHA256
0355bc85557240249c60a700a8e582bea073b5baf57996a24f73f153c053a07f

SHA512
5bfc1d697633520870f42b7d0d0bf4fed450062a7556397abf3fcb3ab6bffa89c5851ebb1a6513f860990a3613008217a85df3d73e04d73d532fa858b62820cd

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads