87d267bf6105e887e5fc1844500827ee4eb696a47ac276187b32c15082e1aeb3

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
26-05-2024 06:42

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General

Target

2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe
Size

71KB
MD5

a3e8b6ac427ae3c9c9af689fffde468b
SHA1

f0e16def91c35f320ca57877814b056128a98fe9
SHA256

87d267bf6105e887e5fc1844500827ee4eb696a47ac276187b32c15082e1aeb3
SHA512

9fd2c4293022c93654d0987dba1f20d2c6c82eb7de1f008cd7d66cb121123edb01eb3fd742e2b009338aa92d3a7d200c8b47795850fb0dc9938c518fe24797c0
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTl:ZRpAyazIliazTl

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2952	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2892	2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe
Token: SeDebugPrivilege	2952	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2892 wrote to memory of 2952	2892	2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe	28
PID 2892 wrote to memory of 2952	2892	2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe	28
PID 2892 wrote to memory of 2952	2892	2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe	28
PID 2892 wrote to memory of 2952	2892	2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3e8b6ac427ae3c9c9af689fffde468b_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2892
- 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:2952

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\bpL8qzjd6XtVKu1.exe

Filesize
71KB

MD5
de4a4b68481d783a3af22b8625aea4d0

SHA1
5a3e3fe1bae2f2635e9415f3d9f058aa3eb7b36a

SHA256
c75fd9ef0629d06715bcaab9b49a8d1b458cbf15e2a55da5519e99475ba60172

SHA512
e2acc2d4516851094a19f61affbe0830fcb47fce91f7d4b0412decb3bdd98de5b8426c18152d95ad790b621049944ba36b298aee6983c4886a064b46e6c01733

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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