0f536843c0cff9959f50d6601cd03f16303f3eab5cf6cffe3223ae49abfba1e4

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
12/05/2024, 08:01

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General

Target

2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe
Size

71KB
MD5

76b0668ad87ecd8c86b44491e0cf452b
SHA1

12b456d88d909557bae82b15dbbe4df268a91b1f
SHA256

0f536843c0cff9959f50d6601cd03f16303f3eab5cf6cffe3223ae49abfba1e4
SHA512

111b2517227daca1aae9ff4e362906799bc6d5e88d08f3b665a86e41fcdd4d69e85bbea4938fc4ae03be5902ee163ff3e359c0eefca7164c5713d5584045cafd
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTqk:ZRpAyazIliazTqk

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2264	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"	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_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	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe
Token: SeDebugPrivilege	2264	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2264	2400	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe	28
PID 2400 wrote to memory of 2264	2400	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe	28
PID 2400 wrote to memory of 2264	2400	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe	28
PID 2400 wrote to memory of 2264	2400	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2400
- 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:2264

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\Nm22OUi7tWf9SWd.exe

Filesize
71KB

MD5
3e5325f650464f28d33ef47b12c8752a

SHA1
eb9032e14aa6f879ae5d1271bec319ddd3c72b8f

SHA256
7fb652fbfa14562147de5ca4b7c347791212a75e7f46fb3dbd6d5695a2e7cfa9

SHA512
cc75c71ee4adbf897a4f52cd2783005e2c87a13421348bc69eeddfb25125f93028a56dddc5077a1e91242091dc264097e3566c2c6f2962e798b279b223e93844

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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