1f599bf939d69da269e0f02afd801a7cfd15313780eca4bbd2050d55a0cfbf8b

Analysis

max time kernel
120s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 17:31

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General

Target

2024-05-02_d385ffbed371e217a5f3c9884040562a_bkransomware.exe
Size

71KB
MD5

d385ffbed371e217a5f3c9884040562a
SHA1

92008cd6ff55a5ebe9cd862b18606e53031aa077
SHA256

1f599bf939d69da269e0f02afd801a7cfd15313780eca4bbd2050d55a0cfbf8b
SHA512

3e37b78647790de457930c624ffc8cdb938aac76cf92e4a468731921770c9a28e002f6d56620dc2f1bd81cfedc5f2bf94fd027c512aba36f5f7bc6104411826e
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTT:ZRpAyazIliazTT

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4928	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"	2024-05-02_d385ffbed371e217a5f3c9884040562a_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	2024-05-02_d385ffbed371e217a5f3c9884040562a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	2024-05-02_d385ffbed371e217a5f3c9884040562a_bkransomware.exe
Token: SeDebugPrivilege	4928	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 4928	1088	2024-05-02_d385ffbed371e217a5f3c9884040562a_bkransomware.exe	82
PID 1088 wrote to memory of 4928	1088	2024-05-02_d385ffbed371e217a5f3c9884040562a_bkransomware.exe	82
PID 1088 wrote to memory of 4928	1088	2024-05-02_d385ffbed371e217a5f3c9884040562a_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-02_d385ffbed371e217a5f3c9884040562a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_d385ffbed371e217a5f3c9884040562a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088
- 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:4928

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
392KB

MD5
59a8f384ac38fba0534323634b593a04

SHA1
d459790e7308ad772085404a97b63c9e4b586b4e

SHA256
83c0c4e6d0ea71351e1e41f3e063538b95d76d89713982a1b3e174215922c41e

SHA512
efa1af17f68f63af88c1e792adbdfa91a8d08bc72f69b679e21e2f806fddd706829c4e804367986315b562af199790f17d93743a01ea555952b5b143f30357ec

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C:\Users\Admin\AppData\Local\Temp\n3nZhWRNo3X0aJ1.exe

Filesize
71KB

MD5
ae609f378ed197682d70187bf17cf275

SHA1
9adceb86a7198aa305700e391df6278849e00658

SHA256
70377ef5e627e94993e3f2d43634548832d3bf6ebe6713af47f541c68fd93d11

SHA512
65a5c142cd854b98aa7e914eb8bdfcc048936eb843544eb0dd0f1e2b0471c8ab5202fd2aed1748836629ca0eb0500da9dcff9643f0fb9e928f2b86d582ee6ed8

Download Submit
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