07be49e93103b4a5603a0ff899260358920471bb59a5fe6f39e6bdfd3019cfab

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 07:26

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General

Target

2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
Size

71KB
MD5

4638616fee07885724f802596bdc0c3f
SHA1

be2fce14abc69512198082bd1535a8b366c7bbf7
SHA256

07be49e93103b4a5603a0ff899260358920471bb59a5fe6f39e6bdfd3019cfab
SHA512

813584e4682cc5e147b925b22ab1ec05c5b3c74fb9eab75dabee52a0de4c875e5d718e6f39f127666c7e76072ee422ca2612c3b529be787604a2e5343d5e9c98
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTJ:ZRpAyazIliazTJ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2836 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
2836	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_4638616fee07885724f802596bdc0c3f_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_4638616fee07885724f802596bdc0c3f_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_4638616fee07885724f802596bdc0c3f_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2764 2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
Token: SeDebugPrivilege 2836 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2764	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
Token: SeDebugPrivilege	2836	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe

description	pid	process	target process
PID 2764 wrote to memory of 2836	2764	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe	CTS.exe
PID 2764 wrote to memory of 2836	2764	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe	CTS.exe
PID 2764 wrote to memory of 2836	2764	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe	CTS.exe
PID 2764 wrote to memory of 2836	2764	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2764
- 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:2836

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:\Users\Admin\AppData\Local\Temp\iqShXMx5nnerOI5.exe

Filesize
71KB

MD5
45e51c23734c3a1af4225022115413a5

SHA1
f477b3d087e87ed7528020be9f54cd10f372c8b3

SHA256
8ba7ad7ceb5b481976e6e7edc6068210a475d893e6e773775304badda5ef0676

SHA512
007571ab4f970b50780aba988ed77646319d7278b8f1023ab7d185b4c88342e4d033f72bbd5d1afdc205c5fff84003d9c501ada736a0ce579f160adad6493b69

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit