2e481d4c3182f0fec5533ed0135f6ab5bf02f44b3d747afc8eff9c05ce281ce1

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 03:56

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General

Target

2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe
Size

96KB
MD5

d55170ec4170a8126ada9da20718e5a4
SHA1

fee6f43b26ece35748660ad7e09347a120684502
SHA256

2e481d4c3182f0fec5533ed0135f6ab5bf02f44b3d747afc8eff9c05ce281ce1
SHA512

29a48bd288ac01674fed46d4a215572dbc892fc2b444c8e9bf63b9fea2cbe755a6707cc3f45d8bdbe3e8ed152034b830f91c27951654cf6fef86c0e8559e0e7d
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTaQq8EfnwWPloij9wlMdVh:ZRpAyazIliazTufwWmipwlI

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

cxezO9SCIos8sKO.exeCTS.exe

pid process

312 cxezO9SCIos8sKO.exe
2168 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
312	cxezO9SCIos8sKO.exe
2168	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-23_d55170ec4170a8126ada9da20718e5a4_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:

2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3128 2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe
Token: SeDebugPrivilege 2168 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3128	2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe
Token: SeDebugPrivilege	2168	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe

description	pid	process	target process
PID 3128 wrote to memory of 312	3128	2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe	cxezO9SCIos8sKO.exe
PID 3128 wrote to memory of 312	3128	2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe	cxezO9SCIos8sKO.exe
PID 3128 wrote to memory of 2168	3128	2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe	CTS.exe
PID 3128 wrote to memory of 2168	3128	2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe	CTS.exe
PID 3128 wrote to memory of 2168	3128	2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_d55170ec4170a8126ada9da20718e5a4_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3128

C:\Users\Admin\AppData\Local\Temp\cxezO9SCIos8sKO.exe
C:\Users\Admin\AppData\Local\Temp\cxezO9SCIos8sKO.exe
2⤵
- Executes dropped EXE
PID:312

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:2168

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
394KB

MD5
e045b6e4bf70f6d926dd94d8b83964df

SHA1
e397ce412be184cb7c01e1cc589f5d29e98276b1

SHA256
5bf98209e138201ace513f402db2b1f627338e5b2d577e0d8b0be084fa742ff4

SHA512
0edf06ff81441c363bb0c090d39744db14756b0fa1dee95b7e1ef1b9863ebfe81b29070231946873428e2962bd3f7e5a8ff7cb1a2752527c4985ce643bcb2224

Download Submit
C:\Users\Admin\AppData\Local\Temp\cxezO9SCIos8sKO.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/312-13-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download