fa59ee84ae7cf946b9bc035dfde8fb40d3e3468190bd17cb610c53fe3d2bc844

Analysis

max time kernel
67s
max time network
52s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 17:34

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General

Target

2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe
Size

518KB
MD5

fdf20870e0f6947acc54d7dc158de616
SHA1

d3f35f9cd5bf840d8c9b690929822f72f3e59bd7
SHA256

fa59ee84ae7cf946b9bc035dfde8fb40d3e3468190bd17cb610c53fe3d2bc844
SHA512

3f35c985dd351ff1db874a5d351bb42bfca675df3ac4bca2d5cdf91f6012b9aa0cf73efbf5896a967cda8aacf3d212db0106520a524080d395195b3238b1b3d7
SSDEEP

12288:xC0tmH3Ut1er+kigoZUWtBaL4XA9K8gGsxEiIS:DtmiyQ2WHaLHsuZS

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

VvLBeUNjoQFFI7T.exeCTS.exe

pid process

4380 VvLBeUNjoQFFI7T.exe
4684 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
4380	VvLBeUNjoQFFI7T.exe
4684	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_fdf20870e0f6947acc54d7dc158de616_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_fdf20870e0f6947acc54d7dc158de616_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_fdf20870e0f6947acc54d7dc158de616_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1820 2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe
Token: SeDebugPrivilege 4684 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1820	2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe
Token: SeDebugPrivilege	4684	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe

description	pid	process	target process
PID 1820 wrote to memory of 4380	1820	2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe	VvLBeUNjoQFFI7T.exe
PID 1820 wrote to memory of 4380	1820	2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe	VvLBeUNjoQFFI7T.exe
PID 1820 wrote to memory of 4380	1820	2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe	VvLBeUNjoQFFI7T.exe
PID 1820 wrote to memory of 4684	1820	2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe	CTS.exe
PID 1820 wrote to memory of 4684	1820	2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe	CTS.exe
PID 1820 wrote to memory of 4684	1820	2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_fdf20870e0f6947acc54d7dc158de616_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1820

C:\Users\Admin\AppData\Local\Temp\VvLBeUNjoQFFI7T.exe
C:\Users\Admin\AppData\Local\Temp\VvLBeUNjoQFFI7T.exe
2⤵
- Executes dropped EXE
PID:4380

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:4684

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
392KB

MD5
4dea6e8603066ec9d6d417a51cb34aea

SHA1
b78b6b90ab9d1a19fa924116ce660c76ce69999a

SHA256
eb18c3976ffcfdcbe6f5e13b836111348ef59eb5f08a55d897e195e1190e0192

SHA512
7d83016f76f1b15a6523896ae0f8404f46c19e382da23b27aeb80600e541e186b7dc9fc6c16ae5288019ba668ee3043478cf38a4eadf66d958310731d587ba25

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C:\Users\Admin\AppData\Local\Temp\VvLBeUNjoQFFI7T.exe
Filesize
447KB

MD5
3f461ca3e3d9da036cf1a4a06ddf4fb4

SHA1
15395e4b656cee3a708bc50c1094e3fa0c46802e

SHA256
cd8e84c1f8d1ee3a7014343e3fb236329d2b67c1ec233ea4b208d99e3f95105b

SHA512
d0cb3f56db648c9ee151990260a864cdcd0d508a1dafcd741d8b2ccd8f73ba29607f384a4e2752502419cfd4a41d2288d7c3ffec93925be85fc39dad9c01e7f5

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C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit