2c21807c3cd0acaaa7905fce4a45f3db2360ee4662adc873fb4c49cd5ae6aa43

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 15:25

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General

Target

2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe
Size

71KB
MD5

6a1570f570f15dc08a8d370b3490cb7c
SHA1

74c56df09fdad3814bad0fb5026cf47fecb65ee3
SHA256

2c21807c3cd0acaaa7905fce4a45f3db2360ee4662adc873fb4c49cd5ae6aa43
SHA512

f6fbf7d05230600a1e6972f16c6eda5760134927248c6911d46fb78f664970ce8be7b7e10d2830ffd598ba6701c18e4cdaf9f71b7b085d608816db9ae5365143
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT5:ZRpAyazIliazT5

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2724 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
2724	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_6a1570f570f15dc08a8d370b3490cb7c_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_6a1570f570f15dc08a8d370b3490cb7c_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_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3084 2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe
Token: SeDebugPrivilege 2724 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3084	2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe
Token: SeDebugPrivilege	2724	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe

description	pid	process	target process
PID 3084 wrote to memory of 2724	3084	2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe	CTS.exe
PID 3084 wrote to memory of 2724	3084	2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe	CTS.exe
PID 3084 wrote to memory of 2724	3084	2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3084

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:2724

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
58669ec33c7b939237a9fd7ad92d917b

SHA1
64a6274bd28e68cb7b3605da60716ddc4344f069

SHA256
31ca85d92566147181b1a7aa609117de0cd053b4229bb4bdbcfa9f86a0ecef68

SHA512
158fa757ad87ee1b62a4dad0f9223b5fb654bd2315a06f6e116a962bcf326f3e0331769442f39884cd57ccc061203170bdbeac401c4d3bb1f8c121a57dc30a35

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C:\Users\Admin\AppData\Local\Temp\00lgpBnJ4DZaxMB.exe
Filesize
71KB

MD5
f0e7b706cb83cbce1bbfc94aa15cf8f4

SHA1
8fed616f8e714026c83dad4727ac5a2a0017c0b4

SHA256
0684ad8523e186fec68977457eebb917b455661327a01963f545e1deebcf5ff2

SHA512
4c0d16d492ba0e8aec17928bdadf6ca7ee5b0306847f5d9412b508eb87c9737799f465fd03bd306a3fef91c8e3a622183e44eedc530d9cd99e26a4dbd8e06caa

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C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit