f4a85de410dc6962b9da468c70b7373f8883c9b7fa8f413d7dba1941013f2883

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30/05/2024, 22:29

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General

Target

2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe
Size

72KB
MD5

490a908bfd998a33e4ee91e015ffa286
SHA1

87f91c22ab4ea0f06c92164b395451894f3f5087
SHA256

f4a85de410dc6962b9da468c70b7373f8883c9b7fa8f413d7dba1941013f2883
SHA512

72863b98b53b544aef8adeeadf74274b6b7764a0761911dd31e7f8ef96c7a9ef5f6f1af3dd9bd1fa4d85304e7f4d99b1897924c9c7a417a4f7944098748c6f2c
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTi:ZRpAyazIliazTi

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2524	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2940	2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe
Token: SeDebugPrivilege	2524	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 2524	2940	2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe	28
PID 2940 wrote to memory of 2524	2940	2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe	28
PID 2940 wrote to memory of 2524	2940	2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe	28
PID 2940 wrote to memory of 2524	2940	2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_490a908bfd998a33e4ee91e015ffa286_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2940
- 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:2524

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\g7e1BzbCmPNfWUp.exe

Filesize
72KB

MD5
132984a5a1fc35ba22256d43da996fd8

SHA1
a1ea7f31d8499c575ea3faf98450ac3d345d787b

SHA256
1a279d33b39b10d05c8e12b85c99b16189395b7428284b825465882ee5c7a267

SHA512
c75d7fd83b726639c99218b90ab63a00969f4f8db1c68f003f69031917f68637c4a8a7d118f84e2c2490516ee95a3ff94ca02ba500f6977fcdfe28abd122c590

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads