f4417767cd505eecc61b822ad17c03748458096e85bdd45ff766d696e8ad616a

Analysis

max time kernel
51s
max time network
51s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
16/06/2024, 18:33

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General

Target

2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe
Size

96KB
MD5

a8dd0612b09b1bbd74f403528a207cc4
SHA1

da98880d4e3b3cbe6ad13aeeefd5df8d1d7ec8ff
SHA256

f4417767cd505eecc61b822ad17c03748458096e85bdd45ff766d696e8ad616a
SHA512

c84b6c0e4ae7d54b8c117952f2e729bacda44b107840d351c87ec8d3b217b1907a19153a2a6788f1225d740f7a2363227224ea15338f33bdc1d14381d1cc7de3
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTSwXUZsrP183MfktF/:ZhpAyazIlyazTSwCsj1mgCl

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4056	qvqYSU2wgeXMbGG.exe
3364	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"	2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_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	2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1584	2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe
Token: SeDebugPrivilege	3364	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1584 wrote to memory of 4056	1584	2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe	82
PID 1584 wrote to memory of 4056	1584	2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe	82
PID 1584 wrote to memory of 3364	1584	2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe	84
PID 1584 wrote to memory of 3364	1584	2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe	84
PID 1584 wrote to memory of 3364	1584	2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-16_a8dd0612b09b1bbd74f403528a207cc4_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1584
- C:\Users\Admin\AppData\Local\Temp\qvqYSU2wgeXMbGG.exe
  C:\Users\Admin\AppData\Local\Temp\qvqYSU2wgeXMbGG.exe
  2⤵
  - Executes dropped EXE
  PID:4056
- 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:3364

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
392KB

MD5
7f5c3796ac23b4154343ecc2249c57b1

SHA1
ad5516a8f4de183608908a8ec93043d1907bae0e

SHA256
0c2dd1b3d4aa3b888e3ed058513ec212815ba091ec2a406083abc32db276fed8

SHA512
0ee7ab77c1d8241bec50375f188e101f19c57279c4923034103cf2676dbe6ea6a989123afd745eddc0668f0933218df369debf77c50fb7109b2e5a27e726f977

Download Submit
C:\Users\Admin\AppData\Local\Temp\qvqYSU2wgeXMbGG.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/4056-8-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads