0cc2a421b93f1fa09190effe5e7fe672a1d9c7b62ecf80581b43c88b48d771b4

Analysis

max time kernel
93s
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
28-04-2024 17:30

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General

Target

2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe
Size

71KB
MD5

b4702d84b9ff4720f628910d5e118154
SHA1

d19c64800158d8357acd1fbe42fe292839aa9485
SHA256

0cc2a421b93f1fa09190effe5e7fe672a1d9c7b62ecf80581b43c88b48d771b4
SHA512

5eb1e4cc0301a8d69882d54fbeb9e03711557ebcaab782aad7328bb410191148a9cd6985410bcfe99dd16b4dccd52175351dde5af18f4c69fd819e3ce9917ef5
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTQ:ZhpAyazIlyazTQ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2392 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
2392	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_b4702d84b9ff4720f628910d5e118154_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:

2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3332 2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe
Token: SeDebugPrivilege 2392 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3332	2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe
Token: SeDebugPrivilege	2392	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe

description	pid	process	target process
PID 3332 wrote to memory of 2392	3332	2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe	CTS.exe
PID 3332 wrote to memory of 2392	3332	2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe	CTS.exe
PID 3332 wrote to memory of 2392	3332	2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_b4702d84b9ff4720f628910d5e118154_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3332

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:2392

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\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
394KB

MD5
70c08fed3cd0ce7d6dca356959346fb4

SHA1
dea500f320a989ed71644df9a164818fc135023a

SHA256
1cd960c6075c7f8aa2929be8609bbb24ff9c06cb6e9ffa0296354249d356859f

SHA512
b0ccbe88d68f82bca14793ae0691f30523bb4364ecb4e40bb42c9f310c5e68f02ec899fb5115cae80b90bbb235f8f5379f843eb578909e7fc0bd4e04202b466b

Download Submit
C:\Users\Admin\AppData\Local\Temp\ceTFj36l975CUOr.exe
Filesize
71KB

MD5
5e6934930e38f3aa3c555943a6597e2a

SHA1
d8f6fa27b479cc34427fc0349766c40ac4c2c11b

SHA256
92a8a0a676e39cbb3f5ddf34de3e047b45873efbff90b31d46c754ccfc92544c

SHA512
e7da31391486328e9647bb9b04d192c79320c50eeef9868a65405c39f2944904f711b42bec80418665326244b68ff7b64948d3a57b463665b7d134e602507d64

Download Submit
C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit