7dae106cff9c4a1898bc36dac5328a13790c41d0026e0fc1c79fdee96ca01c1d

Analysis

max time kernel
133s
max time network
125s
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 22:24

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General

Target

2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe
Size

96KB
MD5

1d7e25d50fc15e73ffd61cdcac7b0eb6
SHA1

ea4ed70069578706227b798ab6af265c1c18814d
SHA256

7dae106cff9c4a1898bc36dac5328a13790c41d0026e0fc1c79fdee96ca01c1d
SHA512

1d30df147db035021fd369d19c336d0f2bdf32d6589e8ef1df147ac39abc31536c6069eebc192c3b205825d9a1222ea34a508623c075581bcc6b8ce3ec073955
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTWHsKy9SWAcWF2+PDm28n:ZRpAyazIliazTWMv9SWAcWF2YDm2g

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

tuF1ldDwuyveExU.exeCTS.exe

pid process

2680 tuF1ldDwuyveExU.exe
4592 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
2680	tuF1ldDwuyveExU.exe
4592	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_1d7e25d50fc15e73ffd61cdcac7b0eb6_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_1d7e25d50fc15e73ffd61cdcac7b0eb6_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_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 212 2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe
Token: SeDebugPrivilege 4592 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	212	2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe
Token: SeDebugPrivilege	4592	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe

description	pid	process	target process
PID 212 wrote to memory of 2680	212	2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe	tuF1ldDwuyveExU.exe
PID 212 wrote to memory of 2680	212	2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe	tuF1ldDwuyveExU.exe
PID 212 wrote to memory of 4592	212	2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe	CTS.exe
PID 212 wrote to memory of 4592	212	2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe	CTS.exe
PID 212 wrote to memory of 4592	212	2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_1d7e25d50fc15e73ffd61cdcac7b0eb6_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:212

C:\Users\Admin\AppData\Local\Temp\tuF1ldDwuyveExU.exe
C:\Users\Admin\AppData\Local\Temp\tuF1ldDwuyveExU.exe
2⤵
- Executes dropped EXE
PID:2680

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:4592

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
393KB

MD5
f8761d779da3fdf4c74e111a7007765e

SHA1
16fcb24407bdd166a24546e744e994b5c6876af8

SHA256
8b52ba0620c1168ee5f0121f9a7d0b52fd09602f3da196ac33c4aa038f3bf9b9

SHA512
057893f22b1dbf25b7e3b61f51f13e2d9871a76e8f8bb6204607a7d230ba82b17d9aafe74dab212868090d2403d89d1f94582c803c49e7e35b3345c4380e22bc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tuF1ldDwuyveExU.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/2680-11-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download