ee54c04eef4ebef683e969a5be5fc91c518ca3dd9960a71edbc7d58535b1f51c

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
20-05-2024 17:56

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe
Size

131KB
MD5

52a1e8f7ef4a59d97af988b7a2e68042
SHA1

a39dc92579301f62e4ff2379d5f85961d49ad1ed
SHA256

ee54c04eef4ebef683e969a5be5fc91c518ca3dd9960a71edbc7d58535b1f51c
SHA512

1abdd1722cebc4ae91fd9efc4290ce6c49dbdf436b222288176601148c7df8521231d62c10eeb869add64d12b98f8f370add5244ab8bf713f9d088e622471cb7
SSDEEP

3072:ZRpAyazIliazThPqPSe+DI8iEMP9j75hi5Vs1Sac:xZ8aztPqPSe+cZL/hi5

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2044	sugZi1z7L9w4Rpd.exe
1196	CTS.exe

Loads dropped DLL 2 IoCs

pid	Process
3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe
3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_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

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe
Token: SeDebugPrivilege	1196	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2044	3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe	28
PID 3048 wrote to memory of 2044	3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe	28
PID 3048 wrote to memory of 2044	3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe	28
PID 3048 wrote to memory of 2044	3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe	28
PID 3048 wrote to memory of 1196	3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe	29
PID 3048 wrote to memory of 1196	3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe	29
PID 3048 wrote to memory of 1196	3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe	29
PID 3048 wrote to memory of 1196	3048	2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_52a1e8f7ef4a59d97af988b7a2e68042_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Users\Admin\AppData\Local\Temp\sugZi1z7L9w4Rpd.exe
  C:\Users\Admin\AppData\Local\Temp\sugZi1z7L9w4Rpd.exe
  2⤵
  - Executes dropped EXE
  PID:2044
- 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:1196

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
\Users\Admin\AppData\Local\Temp\sugZi1z7L9w4Rpd.exe

Filesize
60KB

MD5
ed0fde686788caec4f2cb1ec9c31680c

SHA1
81ae63b87eaa9fa5637835d2122c50953ae19d34

SHA256
e362670f93cdd952335b1a41e5529f184f2022ea4d41817a9781b150b062511c

SHA512
d90d5e74a9be23816a93490ed30c0aae9f7f038a42bd14aa2ce78e95967b4aabd848f006f00ade619c9976755658d45aa0f5b6d5babbbb2d59a6ed3a3a12ac6b

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads