c7b8f3ec3c93e024caf57a48092501d6894c682d56bf1f59e4999013e0f30851

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
31/05/2024, 08:06

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General

Target

2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe
Size

71KB
MD5

3c63c8e5b02975df9a1232dfab34fbf3
SHA1

00edca3152b564b22142ae3e519d616515785a98
SHA256

c7b8f3ec3c93e024caf57a48092501d6894c682d56bf1f59e4999013e0f30851
SHA512

fdac20cdf9f59ac6a35ecf973310e52170cd0228f1bc47f2f0af518bf77220ac42bcf2b55a49d5101365eb506bbbf9b45d89ebbaa6ff2595f128c13ef6dd87d0
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT6:ZRpAyazIliazT6

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1984	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"	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_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	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe
Token: SeDebugPrivilege	1984	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 1984	3024	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe	28
PID 3024 wrote to memory of 1984	3024	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe	28
PID 3024 wrote to memory of 1984	3024	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe	28
PID 3024 wrote to memory of 1984	3024	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3024
- 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:1984

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\bm7w5IqYn29siFU.exe

Filesize
71KB

MD5
852db3a4bb37758ff16b62a90c7c1ebb

SHA1
e0df7fadb2d3a6679efaea221870eac69550f3d4

SHA256
93449a2e0699c53cb19ef7bbec2b6a4be3b42ac6dca466b47a1c0121081aa97b

SHA512
136bb5ffe9772fa034f532c17a6fd2b321125d23e646265119754aae608b610f3978c5d07b29ff229b29ec04c1889c14eb2b47e276b945136fbebf55698d995c

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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