9b6ba7cfde0f6b1ad87d628b013f5bafa32f23f3c7911db8a9379848a279d599

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 16:42

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General

Target

2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe
Size

73KB
MD5

c90f0362364e8d8bf8c7783bb3a8de57
SHA1

096cc5e35a80ecdb10cfa8fb64cd6a61e32d76d8
SHA256

9b6ba7cfde0f6b1ad87d628b013f5bafa32f23f3c7911db8a9379848a279d599
SHA512

fc3cc7e3da7d58da0bbd0917e5f4766e9a6ffaf05aca7859be89dcf3f774ef3f71df2578752b7012ad1b990ecafe07ad2f4d78a95d640fb5d45d8a2192f7032a
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTY:ZhpAyazIlyazTY

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2820 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

pid	process
2820	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_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

Processes:

2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2224 2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe
Token: SeDebugPrivilege 2820 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2224	2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe
Token: SeDebugPrivilege	2820	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe

description	pid	process	target process
PID 2224 wrote to memory of 2820	2224	2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe	CTS.exe
PID 2224 wrote to memory of 2820	2224	2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe	CTS.exe
PID 2224 wrote to memory of 2820	2224	2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe	CTS.exe
PID 2224 wrote to memory of 2820	2224	2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_c90f0362364e8d8bf8c7783bb3a8de57_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2224
- 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:2820

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\IPVXeBxyrXdPiZg.exe

Filesize
73KB

MD5
d401d99377f8e8f39d0b124dac2493b2

SHA1
a71a9b66b5a92469ca7fcbf94f4aee91c9a6c950

SHA256
ccd44c7df1a06935ed684bddd9f0dda1bdbe14ad6e4d5ae2f67cb111dd1d4895

SHA512
dfabe882f3225e85891b7f7abbaa3095077e35bc209886efe78be1dde72d02516e4d1d645dfe8830231de7d16045e62ba219fddc995743cc3562ca86d02a42bc

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit