fd95c740f62347eac8babe5fc33e457a183016d029f80283e468cf7a07b3b210

Analysis

max time kernel
147s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 00:46

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General

Target

2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe
Size

71KB
MD5

9585d68fcfb844900962273117de36c6
SHA1

b327973cbcf1057c8227c89fee14eda545809098
SHA256

fd95c740f62347eac8babe5fc33e457a183016d029f80283e468cf7a07b3b210
SHA512

b1a6e86dd00e1dfa9f73bd2583f81a3ad0301e7e6b1235b578504f8ee4588193c50afb18edd21996f3f87c426286fa8db66146931787059a98171c00758524e1
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTF:ZhpAyazIlyazTF

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1392	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"	2024-06-13_9585d68fcfb844900962273117de36c6_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	2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	556	2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe
Token: SeDebugPrivilege	1392	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 556 wrote to memory of 1392	556	2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe	82
PID 556 wrote to memory of 1392	556	2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe	82
PID 556 wrote to memory of 1392	556	2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:556
- 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:1392

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
394KB

MD5
8d35c70890cedae260aa13de7df3d6fb

SHA1
5abd81744e4acef3ae1fcdfa97850f2336fff03e

SHA256
00f6fb98fa997a91d9950862cd62e8aacce6cef925d79acf469a58a41a4652a9

SHA512
e6c525d3f7c0234c0199b9a2023ecb57c779d95d4450f11ddfcc5dd3dde33eb85218f5b88edd53b4be40d8c71d8b8595097c6a8cbc641b4a5b9bc9521ceed5d5

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C:\Users\Admin\AppData\Local\Temp\xXo2i5VuvKiqTyF.exe

Filesize
71KB

MD5
5462cc73e681a0bf44c824d23ee3cb1f

SHA1
0a86707ea941e137445eb2844733483c978c10ea

SHA256
f52502aa8290e28d7fe2a535cf775d407648ef7845b7a50c02ed62682c9a0b1e

SHA512
247014bb35caefe927fe0a6fb135ee86aa67b947495729c3099d24c050f3cd5563d1c2c35507e8f914a4c9e8fd2c361b7a2373ae7cf434ec6331a9d086b43377

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads