354231d8e75a7165030fa6c1848c951ec97a433152ceda33cf08f5bf5b735495

Analysis

max time kernel
140s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2024, 07:30

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General

Target

2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe
Size

96KB
MD5

c60633b6f6258e541247f48f68d5ec46
SHA1

e4d5deecfef7fb6a67ffcf4e1eef29c175f22543
SHA256

354231d8e75a7165030fa6c1848c951ec97a433152ceda33cf08f5bf5b735495
SHA512

c85bfe4ed794b55d26b684f028999a3dbe49ec7c16b26df565c68037f332a2512c42c43f9a7a894148ee299b9d9eee0e730091d0aff5ba768a1ef847c390f37a
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTcu2oIMorLjbentqCZ7:ZhpAyazIlyazTMU57

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1228	R0pjOOsSROuM0Vc.exe
316	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"	2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4360	2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe
Token: SeDebugPrivilege	316	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4360 wrote to memory of 1228	4360	2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe	84
PID 4360 wrote to memory of 1228	4360	2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe	84
PID 4360 wrote to memory of 316	4360	2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe	85
PID 4360 wrote to memory of 316	4360	2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe	85
PID 4360 wrote to memory of 316	4360	2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_c60633b6f6258e541247f48f68d5ec46_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Users\Admin\AppData\Local\Temp\R0pjOOsSROuM0Vc.exe
  C:\Users\Admin\AppData\Local\Temp\R0pjOOsSROuM0Vc.exe
  2⤵
  - Executes dropped EXE
  PID:1228
- 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:316

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
95fee79e615fe5f3e19fd924f19c597f

SHA1
1d1bb93f2d97d5e4921cd5514a24e6c06a5ae336

SHA256
37378a2ec494d1a32409a6dc32272f752e4e491600e5c716b369218c15ecae57

SHA512
95cc9de49b11270bcafd9624adecb3f200f4a9376dcc42e1a9d0dd16d2bf40f3043a9465a8310509b36d51c98e14f65575cb7ad4ef2842d1577406b154d6ef3e

Download Submit
C:\Users\Admin\AppData\Local\Temp\R0pjOOsSROuM0Vc.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/1228-12-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads