6bba6e32701ddb7bc3a8d5945c570177694d2622d5f21eed6428ade8c15d2bd2

Analysis

max time kernel
92s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-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
4036	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	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4228	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe
Token: SeDebugPrivilege	4036	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 4036	4228	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe	81
PID 4228 wrote to memory of 4036	4228	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe	81
PID 4228 wrote to memory of 4036	4228	2024-05-11_fe807fab296a3c9a3277ca8602970471_bkransomware.exe	81

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:4228
- 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:4036

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\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
392KB

MD5
12c4883b5a38f76de4b15357084fd8b7

SHA1
af81fab774a278f0b39ede4a37f5f884a4ccb42b

SHA256
5c6fe1a7ee342dd27b582d243c579e2f2b6cba407337240000fe5b2037193e3e

SHA512
67735b3237961915b6de1160b9178fc868f600b1956568df366205c94fde56a07edff18de60f7079b582be48a0237297af39b5888d61ba8ceadd6b0a10dde51e

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C:\Users\Admin\AppData\Local\Temp\FxAhMah4Mg2NIgO.exe

Filesize
71KB

MD5
bf62df59dd3c59861581baab659a9b01

SHA1
4698251f7c2403f2252039ecfa158b86c72dc13b

SHA256
0183d361d53037aa5216ac9e197953c9d93faa6d06bafa087486f8f878c432f9

SHA512
4631b51d43df4fa8aca155627586f12db8515246958b46a22de09597629cca37302a4afcd00b4f8ebbf40c7a4ecee78f5c052915e32322c381c49a7ad238b2cf

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

Replay Monitor

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Downloads