ed20a0039a451de4cf70541f043f55807ac38d1b2ddbf53f09375ba71035fec0

Analysis

max time kernel
42s
max time network
52s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
06/07/2024, 03:31

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General

Target

2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe
Size

96KB
MD5

c3fb99cd5606118cf17bb0db7c3fee55
SHA1

5997947414d85f4debf1f9be1a15f5ada768c6a4
SHA256

ed20a0039a451de4cf70541f043f55807ac38d1b2ddbf53f09375ba71035fec0
SHA512

2f8365020caccd669d72db5f81afa6294399d9233ae3a6d16c1b140934cc287fd5a07a907105f36e70856eaff3e23e6521f6bc64ce9e2f4cf9c7a38aa4c147f5
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTdemwPEsX5pX+p7P/r:ZRpAyazIliazT9wPEvZ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1148	cNVh3OPX6qFGO57.exe
4648	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"	2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_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	2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1816	2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe
Token: SeDebugPrivilege	4648	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1816 wrote to memory of 1148	1816	2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe	80
PID 1816 wrote to memory of 1148	1816	2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe	80
PID 1816 wrote to memory of 4648	1816	2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe	81
PID 1816 wrote to memory of 4648	1816	2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe	81
PID 1816 wrote to memory of 4648	1816	2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-06_c3fb99cd5606118cf17bb0db7c3fee55_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Users\Admin\AppData\Local\Temp\cNVh3OPX6qFGO57.exe
  C:\Users\Admin\AppData\Local\Temp\cNVh3OPX6qFGO57.exe
  2⤵
  - Executes dropped EXE
  PID:1148
- 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:4648

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
93aa66e76b2ee58163696dcacf2fbfce

SHA1
7e26b4bb127cd1965b06f91e0c4bf2265bb504d3

SHA256
4ac670ef02e15067d7d6a48e2cbe24efdf814919f9f1fb2dbc07d136a6338f6b

SHA512
010d871f38437e21a554840cf6befda62c8c0a67713968a8a36b68a69e60fe765150e89844ea33c0f6420aa0c294d753f7648cea1477345da9ea43223b0644b5

Download Submit
C:\Users\Admin\AppData\Local\Temp\cNVh3OPX6qFGO57.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/1148-10-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads