66e731571710c655025901c0db2d4d3d56d688942dbf49bdf482db3140b15f31

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26-05-2024 07:48

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General

Target

2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe
Size

72KB
MD5

ee713c188e4d767c0c9544b3316017c6
SHA1

377a051cb315f5a800f5bbd0ca80b6fa2c807ac9
SHA256

66e731571710c655025901c0db2d4d3d56d688942dbf49bdf482db3140b15f31
SHA512

0cf0d4bf04134dc45a259d3b1b32c29c5dda60411ec7562ed87cc3a399b0140e9d9ac269622cadf91cfbf4c644271f96b563c6a2db1d788799a7a93f56f97600
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTpD:ZRpAyazIliazTd

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2196	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"	2024-05-26_ee713c188e4d767c0c9544b3316017c6_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	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2316	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe
Token: SeDebugPrivilege	2196	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2196	2316	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe	28
PID 2316 wrote to memory of 2196	2316	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe	28
PID 2316 wrote to memory of 2196	2316	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe	28
PID 2316 wrote to memory of 2196	2316	2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_ee713c188e4d767c0c9544b3316017c6_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2316
- 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:2196

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\lSaBduRpS4efaT1.exe

Filesize
72KB

MD5
09a0dd5f0e4737242a00b8af19fa8770

SHA1
d8efd21479b3a905ddeba8a42ffa2d5b5559894e

SHA256
9206599860a11f38dd3cf28ed08f9aa5e34423e3c49a8b3ae5663c02a90eaaed

SHA512
8454d314194561936385a41c8796974aa81f81ba8799c0d135847c95de810e6816f1d88f026fbf50c0d301134780cfc5e1be089ddb01535a28ca201393ef667a

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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