6bba6e32701ddb7bc3a8d5945c570177694d2622d5f21eed6428ade8c15d2bd2

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11-05-2024 18:54

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General

Target

2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe
Size

71KB
MD5

fe807fab296a3c9a3277ca8602970471
SHA1

b88ad4e7e81f024d7cacdacb4294278e33101939
SHA256

6bba6e32701ddb7bc3a8d5945c570177694d2622d5f21eed6428ade8c15d2bd2
SHA512

3ab5a5caf60102efe51d3cb6412cf32e75206beabab9d15cf39d063eb680e0c1c5f2546362241b54aeb631cc9ac634ff4fb9303b96834e1c7c1b91ef69ca3bec
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT5:ZhpAyazIlyazT5

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1076	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"	2024-05-11_fe807fab296a3c9a3277ca8602970471_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	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3000	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe
Token: SeDebugPrivilege	1076	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 1076	3000	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe	28
PID 3000 wrote to memory of 1076	3000	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe	28
PID 3000 wrote to memory of 1076	3000	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe	28
PID 3000 wrote to memory of 1076	3000	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3000
- 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:1076

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\FpOc0tksi0kOwh1.exe

Filesize
71KB

MD5
024ca8ed10fc8ff34f9799dbb4f56815

SHA1
6f7f58154ccf8d813aa58b3460bf418be84e2e34

SHA256
396eb08bd52c5271b68d2d382f531fe5995e00bad1e8f0805528b48e1ccff96c

SHA512
c73de7db4ce76305a33ac68ae213bfbbf6507a3e28402920dde4a413b4e0c5a3aecda935729e8ddc3e601f50a4a65d943d3d6874e5bfe8ccd5f39b46a2b79a9e

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads