8ab18c5b6e75d4cca9c9b823a702ff471259ae13dd7fac166bf56386a636c9f5

Analysis

max time kernel
140s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2024, 17:24

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General

Target

2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe
Size

96KB
MD5

38f4b78515c858955b0b792ceeb5ae78
SHA1

defb705c8d6fe679e21018f20d693f09f8e039ac
SHA256

8ab18c5b6e75d4cca9c9b823a702ff471259ae13dd7fac166bf56386a636c9f5
SHA512

38253df560c076a900cd386560220040e77b9e437fbfbb0ba95132f3d7607bc84d1bbf56a87689dc42f3dbdbb9202d11ef10d0eab22955521121e3dbaf2da84a
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTgJwfZV8fqFiQM7tgWfOk+:ZRpAyazIliazTgJUZifqFiTWk+

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
416	2Nbwxm8EZ5pRU3h.exe
3688	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"	2024-05-17_38f4b78515c858955b0b792ceeb5ae78_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2492	2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe
Token: SeDebugPrivilege	3688	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 416	2492	2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe	82
PID 2492 wrote to memory of 416	2492	2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe	82
PID 2492 wrote to memory of 3688	2492	2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe	84
PID 2492 wrote to memory of 3688	2492	2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe	84
PID 2492 wrote to memory of 3688	2492	2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_38f4b78515c858955b0b792ceeb5ae78_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Users\Admin\AppData\Local\Temp\2Nbwxm8EZ5pRU3h.exe
  C:\Users\Admin\AppData\Local\Temp\2Nbwxm8EZ5pRU3h.exe
  2⤵
  - Executes dropped EXE
  PID:416
- 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:3688

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
393KB

MD5
0a7898160d85990ef74351134b407464

SHA1
eae46a2affe4c186712e37c741e6f1a73229abdc

SHA256
65b6395f37f971fdc214ebe32510306614ca7942dd115e537f081f9282e56558

SHA512
934a6ff684d34eed50634135c7a1805141676f8f1900fd7459e8169d0efb9e9e18e77b2c3527b554474ab2552bc9912b180dc1301b1ee01aab76d89fc6e5e9d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\2Nbwxm8EZ5pRU3h.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/416-13-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads