4f7f97a94194d415928e5d1783e3708b886e8f8dafbc51294be3615e07223e80

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
09-07-2024 08:02

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General

Target

2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe
Size

96KB
MD5

5b0648364ad1b4bcb9c527040b7cc532
SHA1

b58827eb4724d1b13374cdd69dcb2c5d187cd3bb
SHA256

4f7f97a94194d415928e5d1783e3708b886e8f8dafbc51294be3615e07223e80
SHA512

60bf07f7121272bacec0c595dccd129a7f892347447412c00f7561f76d63d46ab78d5941fa7940a136b3c092a6be0acc8c338457e44ab3da784b1c3bbb89a484
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTDpnwk1uorGu0tZz:ZhpAyazIlyazTVwkVrGuwz

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3552	k9ldBygQiQIWuHu.exe
3152	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"	2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_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	2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3588	2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe
Token: SeDebugPrivilege	3152	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 3552	3588	2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe	83
PID 3588 wrote to memory of 3552	3588	2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe	83
PID 3588 wrote to memory of 3152	3588	2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe	85
PID 3588 wrote to memory of 3152	3588	2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe	85
PID 3588 wrote to memory of 3152	3588	2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-09_5b0648364ad1b4bcb9c527040b7cc532_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Users\Admin\AppData\Local\Temp\k9ldBygQiQIWuHu.exe
  C:\Users\Admin\AppData\Local\Temp\k9ldBygQiQIWuHu.exe
  2⤵
  - Executes dropped EXE
  PID:3552
- 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:3152

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
feec944e1970024f325a838cb59312d0

SHA1
d5ee8968afce9a6b66698079c50412ed6501d0b6

SHA256
646d1bcaa68ad0bb6c44a5f1b2a15219d883f11c929f95570fb8025ae411d70d

SHA512
57e38e2a21c5fead628aae63b90d24347883c0d32b8931aaca56265d0ac73460595bb29760ea41fcc410eb60dd4dd7513e5799523961a15f210fa29181e4fc89

Download Submit
C:\Users\Admin\AppData\Local\Temp\k9ldBygQiQIWuHu.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/3552-13-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads