5790ef8a9f470fb5a84d95de6c5249b77e71cd271f31141c65e4d502e3093fa7

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
02/05/2024, 16:44

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General

Target

2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe
Size

131KB
MD5

0f1fabadac1e6af63cf54e1173fedcdf
SHA1

362b7a46cbe6ff3f15c1f2d022cb878fd66a124d
SHA256

5790ef8a9f470fb5a84d95de6c5249b77e71cd271f31141c65e4d502e3093fa7
SHA512

47ebc0993ecde7c32e9ce270c33242c4d64e2a8cca1d651443b005fa366ca20c0e150091b90aa619871b638fd3a6dc716964575350f06a6d57853745ee74c42c
SSDEEP

3072:ZRpAyazIliazTdiyBrv1gIEwmv/4ikkEgMSk/iC:xZ8azvaIEwmblE2k/N

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2988	i6hvD0CDfpB49kb.exe
2228	CTS.exe

Loads dropped DLL 2 IoCs

pid	Process
1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe
1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_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"	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe
Token: SeDebugPrivilege	2228	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 2988	1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe	28
PID 1680 wrote to memory of 2988	1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe	28
PID 1680 wrote to memory of 2988	1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe	28
PID 1680 wrote to memory of 2988	1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe	28
PID 1680 wrote to memory of 2228	1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe	29
PID 1680 wrote to memory of 2228	1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe	29
PID 1680 wrote to memory of 2228	1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe	29
PID 1680 wrote to memory of 2228	1680	2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_0f1fabadac1e6af63cf54e1173fedcdf_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:1680
- C:\Users\Admin\AppData\Local\Temp\i6hvD0CDfpB49kb.exe
  C:\Users\Admin\AppData\Local\Temp\i6hvD0CDfpB49kb.exe
  2⤵
  - Executes dropped EXE
  PID:2988
- 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:2228

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:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
\Users\Admin\AppData\Local\Temp\i6hvD0CDfpB49kb.exe

Filesize
60KB

MD5
7b112b1fb864c90ec5b65eab21cb40b8

SHA1
e7b73361f722fc7cbb93ef98a8d26e34f4d49767

SHA256
751941b4e09898c31791efeb5f90fc7367c89831d4a98637ed505e40763e287b

SHA512
bf9cdeff39cc4fa48457c55ad02e3856b5b27998535aed801a469252f01e7676462332fa3f93877753e963d037472f615c1fc5fc2e996316621b4e0a180cb5f5

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads