e4cca1e18fcf1fa19bf4b94de5009623d79fa6f95b69d7793b75a3bb48736d0b

Analysis

max time kernel
133s
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 22:07

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe
Size

214KB
MD5

3ed11020ec1280c52e117cc8825bd657
SHA1

a1e990e446a1577fecc78f538c4f761595ce0f9b
SHA256

e4cca1e18fcf1fa19bf4b94de5009623d79fa6f95b69d7793b75a3bb48736d0b
SHA512

c6799f462be85c142673257b61e5f229657fb69c13169c15754a8f3c0e1942674cc00ccf99af7148a94269d556b10deb2bcd93e3a07cb486bfe4879653c8234a
SSDEEP

3072:ZRpAyazIliazTeQR3FIqsh7en+auokyjlOzryoei3ls5PEUDQ9h83fKXy7A:xZ8azqJqshC+gh2yi3ls5sUDQ9h8CXyM

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

OXjsBbKcGrXLEje.exeCTS.exe

pid process

3884 OXjsBbKcGrXLEje.exe
4268 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
3884	OXjsBbKcGrXLEje.exe
4268	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_3ed11020ec1280c52e117cc8825bd657_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_3ed11020ec1280c52e117cc8825bd657_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_3ed11020ec1280c52e117cc8825bd657_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4592 2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe
Token: SeDebugPrivilege 4268 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4592	2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe
Token: SeDebugPrivilege	4268	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe

description	pid	process	target process
PID 4592 wrote to memory of 3884	4592	2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe	OXjsBbKcGrXLEje.exe
PID 4592 wrote to memory of 3884	4592	2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe	OXjsBbKcGrXLEje.exe
PID 4592 wrote to memory of 4268	4592	2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe	CTS.exe
PID 4592 wrote to memory of 4268	4592	2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe	CTS.exe
PID 4592 wrote to memory of 4268	4592	2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_3ed11020ec1280c52e117cc8825bd657_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4592

C:\Users\Admin\AppData\Local\Temp\OXjsBbKcGrXLEje.exe
C:\Users\Admin\AppData\Local\Temp\OXjsBbKcGrXLEje.exe
2⤵
- Executes dropped EXE
PID:3884

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:4268

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
392KB

MD5
b0baba83aaf5a19853017fcbd91bd975

SHA1
3c036fec5fa743e99249a4031d15105ab38dee1f

SHA256
fe5f60a57b3c915d21c8463657d3d9aa9c462eec9f385236d72e4e86fb9969dd

SHA512
2fa65c29d6b81bf460b085b0f6918cfd1fcab3b04f87fa2183002045a650056ae5b1cc09c2d9f26bd7a5987cf7e34b9c289e56ce0e9ce05a3b666e27c4753b04

Download Submit
C:\Users\Admin\AppData\Local\Temp\OXjsBbKcGrXLEje.exe
Filesize
143KB

MD5
38f108cddb6619fba80f8382d5227ece

SHA1
12fd277bf756f22cfae3043900e4aff8b9f05ed9

SHA256
8296fe257b8c34398e3f291764454ec3cd9cbe06d60989b632ef4ba6c73ae5dc

SHA512
3db732c23f10122c78cffc6b6a5b11836ade1a23f5c6f9a192f2be2fa99c5bd7afb7a9e29c5d518a888cdd2091f9ac41b244214be226152830e96f5ec2cca424

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

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/3884-14-0x00007FF9D55F3000-0x00007FF9D55F5000-memory.dmp

Filesize
8KB

Download
memory/3884-13-0x0000000000560000-0x0000000000588000-memory.dmp

Filesize
160KB

Download
memory/3884-22-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download
memory/3884-32-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download