5b196b52fe82ac0c7687f3cf10420ca7416440943b17a27356d436e4d60b8aab

Analysis

max time kernel
132s
max time network
102s
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 03:43

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General

Target

2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe
Size

96KB
MD5

20d69ff8e87ab9645f77f746f91d3fe1
SHA1

edc22c9bba03f45b200338108c4286048d924fbd
SHA256

5b196b52fe82ac0c7687f3cf10420ca7416440943b17a27356d436e4d60b8aab
SHA512

47d27ddcd495ab0825e9a49cf4522b63d9aae9969bff2e1c8417644dc57e7029138856934d14ebabab5d03a62e193d7736e3735ef905aae63f1fb01bc05c676d
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTmQssTNLNjIv95vL/LDy:ZRpAyazIliazTmiTJNjIPz/LDy

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

zZ6guchZY2AdMqr.exeCTS.exe

pid process

1748 zZ6guchZY2AdMqr.exe
2960 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
1748	zZ6guchZY2AdMqr.exe
2960	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_20d69ff8e87ab9645f77f746f91d3fe1_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_20d69ff8e87ab9645f77f746f91d3fe1_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_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1520 2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe
Token: SeDebugPrivilege 2960 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1520	2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe
Token: SeDebugPrivilege	2960	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe

description	pid	process	target process
PID 1520 wrote to memory of 1748	1520	2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe	zZ6guchZY2AdMqr.exe
PID 1520 wrote to memory of 1748	1520	2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe	zZ6guchZY2AdMqr.exe
PID 1520 wrote to memory of 2960	1520	2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe	CTS.exe
PID 1520 wrote to memory of 2960	1520	2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe	CTS.exe
PID 1520 wrote to memory of 2960	1520	2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_20d69ff8e87ab9645f77f746f91d3fe1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1520

C:\Users\Admin\AppData\Local\Temp\zZ6guchZY2AdMqr.exe
C:\Users\Admin\AppData\Local\Temp\zZ6guchZY2AdMqr.exe
2⤵
- Executes dropped EXE
PID:1748

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:2960

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
395KB

MD5
03e2a87be1924490e21f6fb5d7fd65ab

SHA1
59b3d92c2266506fc6135fa0913643ca06e1c03c

SHA256
8eb56b002c5bf7793478a871a066607657a47fb57041f3877e78347d9524101f

SHA512
013cf9a451954cebc4010c5fc9eae1fac4bf7024168f5fb29ec8078b7adcf3e491a394c1c916f0f52169305bac4d1323b3087036021574e3d5564d6559445ae2

Download Submit
C:\Users\Admin\AppData\Local\Temp\zZ6guchZY2AdMqr.exe
Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

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

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/1748-10-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

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