72537b300293bf926024f5ff19ac4e92bb7c018e4930b4fa17c466a7bb03d1ec

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
30/05/2024, 18:50

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General

Target

2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe
Size

71KB
MD5

0efe7dfe86adad6ffd274f44b0da89cb
SHA1

8eb3a4e35f45e1b4ee39ecc94a48f68fddb727b0
SHA256

72537b300293bf926024f5ff19ac4e92bb7c018e4930b4fa17c466a7bb03d1ec
SHA512

c0505e6f347088919985366666aaace633295425b8a45df422170d541334082da38f547bc835681e6fefffdb02f909c3c72d703739fd2281e31f0c1725ca69b3
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTM:ZRpAyazIliazTM

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2920	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

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"	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_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	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2924	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe
Token: SeDebugPrivilege	2920	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 2920	2924	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe	28
PID 2924 wrote to memory of 2920	2924	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe	28
PID 2924 wrote to memory of 2920	2924	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe	28
PID 2924 wrote to memory of 2920	2924	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924
- 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:2920

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\VVg5Qx67KeyYqnj.exe

Filesize
71KB

MD5
5d909e713b2eb2300709e872546fefcf

SHA1
6a02baae69f1229779ea89c26af9a694758a5192

SHA256
e943d3ad377a86ed83b51bf41fb663ed02379027ad9dd1bad4eed8713dcba8d4

SHA512
8196543d0a4a77fde7bc45c6fe5d24f190993fbfeafd4b9b8496be87e4139a59050d5239833074aef7e6876d1f089bc65931fcb9464d35cb9d099b33b57f99e6

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads