9931340fecead361b76a4070ceac2503fc17a10423f2c2c84b37cac503e52030

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
09-05-2024 18:29

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General

Target

2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe
Size

71KB
MD5

2621cfc2e22757f4565a3a6af2be12e5
SHA1

385ccb7bc002d8ecf4b783000e0060badc3cb65b
SHA256

9931340fecead361b76a4070ceac2503fc17a10423f2c2c84b37cac503e52030
SHA512

6b4c99d272d843d9b5f94e894cf31d6e666fa71bb5847c6f15f5b06e4ee7da9c621d0ca3b154123f04839541de7dc80591a8d8309e12edcdf34e09333183c4e3
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTl:ZRpAyazIliazTl

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2376	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"	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe
Token: SeDebugPrivilege	2376	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2376	2172	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe	28
PID 2172 wrote to memory of 2376	2172	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe	28
PID 2172 wrote to memory of 2376	2172	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe	28
PID 2172 wrote to memory of 2376	2172	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2172
- 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:2376

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\x3yeCdNJ1nfddr7.exe

Filesize
71KB

MD5
e4bf93b80e50f0d74cc981ee9a146654

SHA1
30c77e1687e7591c6ad462f7c51fd2199b60075e

SHA256
e065e7e6c164cbc29882d6d6fb953e64d28811c0c2edff5624eb83b0f4919528

SHA512
a28f78a2cec7b0fa39c08fed2a117491387b9044318f2b00f9e74e78695c6c32d0c02ed10244c7b7b898b36a23b1558e368b360290b09aa0a56cc653cc26ca90

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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