1e602e59e34f516cbba25d11dc2e706a742780ca8ec64094b3f8ee18b8a60a88

Analysis

max time kernel
94s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 23:35

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General

Target

2024-05-31_a9be46799af0e9350dee5dfe330d7f47_bkransomware.exe
Size

71KB
MD5

a9be46799af0e9350dee5dfe330d7f47
SHA1

acac10e2aaf02fedd3169472029548e2af5e126f
SHA256

1e602e59e34f516cbba25d11dc2e706a742780ca8ec64094b3f8ee18b8a60a88
SHA512

60daf9ea7d927adfb2fb257158b78debb407c3707f2e006b7b4d81c6e00583aafe0c977d76d0f430d28ca26971bd1d933d455ffa4bf0ecd09a08ce0a06cebb1d
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTV:ZRpAyazIliazTV

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3204	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"	2024-05-31_a9be46799af0e9350dee5dfe330d7f47_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	2024-05-31_a9be46799af0e9350dee5dfe330d7f47_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1332	2024-05-31_a9be46799af0e9350dee5dfe330d7f47_bkransomware.exe
Token: SeDebugPrivilege	3204	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1332 wrote to memory of 3204	1332	2024-05-31_a9be46799af0e9350dee5dfe330d7f47_bkransomware.exe	81
PID 1332 wrote to memory of 3204	1332	2024-05-31_a9be46799af0e9350dee5dfe330d7f47_bkransomware.exe	81
PID 1332 wrote to memory of 3204	1332	2024-05-31_a9be46799af0e9350dee5dfe330d7f47_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-31_a9be46799af0e9350dee5dfe330d7f47_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_a9be46799af0e9350dee5dfe330d7f47_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1332
- 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:3204

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\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
789KB

MD5
9f2ff7ac7245ae28d8130ba8fc886400

SHA1
4fb358ec3c58f28f09129c51b3bdfee8dc3c56ac

SHA256
b1cd45b8a06ced3814137029a13e537bdab89976697de58c782d36210fed7c30

SHA512
0a3782e04304b07001d08e3f9e4603c1f5ec6ec1ac7583a535d80ce8154e3627fe1ccc3a9f24aec34c5877bebb20475389aaa6e0da4d9bc36b56cb53a8b33c21

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C:\Users\Admin\AppData\Local\Temp\BOl7GlDnAc3QdEb.exe

Filesize
71KB

MD5
453a45acbdd1ca9ac21162dd69133f40

SHA1
564f9adcab783970c3add6b59d48c648ae039ac1

SHA256
bf6eac5f71b6978bc03b8a7d0918bbc3651f13fc2731d8d7a05b9852fa56e236

SHA512
21071ab8493687c52db3ea736620dc584f0b8cde060688a45090b3ace590f0b13398b69aed1150cbb57a582a42b9a454e6a8b4b772182b411f7e4f544281285d

Download Submit
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

Replay Monitor

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Downloads