5a328a87980e2d3bd3a164fabf69b795269d39850ce308aea891ba581f08433a

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 14:58

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General

Target

2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe
Size

72KB
MD5

a9a6bd647bea9fa5c35e8421ca99c3ac
SHA1

869ffe7921b752cc3f12530a9c6fffb6d3ce7907
SHA256

5a328a87980e2d3bd3a164fabf69b795269d39850ce308aea891ba581f08433a
SHA512

8b0ae50ae00a9ac3de0ff70700fa95f10c28e281c6209f97836addf314876f9374e730496990672be7992abec6ebe7abb771ef2aff1fd9791556346d9eeb5ade
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT1X:ZRpAyazIliazTZ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

4796 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

pid	process
4796	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_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

Processes:

2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2576 2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe
Token: SeDebugPrivilege 4796 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2576	2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe
Token: SeDebugPrivilege	4796	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe

description	pid	process	target process
PID 2576 wrote to memory of 4796	2576	2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe	CTS.exe
PID 2576 wrote to memory of 4796	2576	2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe	CTS.exe
PID 2576 wrote to memory of 4796	2576	2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_a9a6bd647bea9fa5c35e8421ca99c3ac_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2576

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:4796

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
394KB

MD5
e666afc1867574d2d32d2275fb594dab

SHA1
83ca981bddd91b443a8c2c401339f7d926f39786

SHA256
19b0f6aba73b6771792f56d0b587cd5fd49f01fcf8f400a85d425b4421ac4501

SHA512
a9764913da586b3a07b08fe6c7ab6ef9160ed231cfbba58ff22370b4b4d472a0b59e5c0914418bea4dd4d93b3bf4743e0103dd2db7729893f1fee29ef82e7e48

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C:\Users\Admin\AppData\Local\Temp\Kn2VbHeXr0pdmcB.exe
Filesize
72KB

MD5
cbcd14f34e185d6ca86297981eef6b1b

SHA1
a24f907df53600fa4dc7095beef518cd7d7f3380

SHA256
6ba3e24160fe5bd716f1ddad65bdf350d477475fcf481707bd1f7ffd735f8e71

SHA512
322e020516fa1dc23b3cb93bed80977f249ad938469f74d08f8cc2d3bdfb5047ad18d702be0f3c196709f2999e9e4ec4b779fff2ac51c4c5f0de1890cc321c4f

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C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit