05f7e88ea814c8d699f5364abf42f82b16943676ea6bdf2d528f0c6995560134

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
30/06/2024, 00:24

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General

Target

2024-06-30_2f81a659a182c0e3cf3a2fb3923b3e3f_bkransomware.exe
Size

71KB
MD5

2f81a659a182c0e3cf3a2fb3923b3e3f
SHA1

b0cdda5590db83885180f9502921a51df5043792
SHA256

05f7e88ea814c8d699f5364abf42f82b16943676ea6bdf2d528f0c6995560134
SHA512

98e7e2c4ed0d5be21d2f85f3141ee6ad5ee522ee5b829dbd688fe259d2fa4237bbb3ba017fb36df6567b34b2e1138dcc6c3f441a1839593e1bd47c0ab2949cea
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTW:ZhpAyazIlyazTW

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
836	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"	2024-06-30_2f81a659a182c0e3cf3a2fb3923b3e3f_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	2024-06-30_2f81a659a182c0e3cf3a2fb3923b3e3f_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4344	2024-06-30_2f81a659a182c0e3cf3a2fb3923b3e3f_bkransomware.exe
Token: SeDebugPrivilege	836	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4344 wrote to memory of 836	4344	2024-06-30_2f81a659a182c0e3cf3a2fb3923b3e3f_bkransomware.exe	81
PID 4344 wrote to memory of 836	4344	2024-06-30_2f81a659a182c0e3cf3a2fb3923b3e3f_bkransomware.exe	81
PID 4344 wrote to memory of 836	4344	2024-06-30_2f81a659a182c0e3cf3a2fb3923b3e3f_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-30_2f81a659a182c0e3cf3a2fb3923b3e3f_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-30_2f81a659a182c0e3cf3a2fb3923b3e3f_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4344
- 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:836

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
392KB

MD5
7c8b11de1c456aa39ebfb74bb79aa229

SHA1
383be9467dc3a0f44b9b64f3de8fffc2a7312804

SHA256
78266800eec4822ab5496bcb3347149313bda674549f8c5b4f551d0a3cb459b4

SHA512
17fd8f6e6415370505858c1652930dcc0b48de2e86688a0e4cdeac2b202c8dc76aba3be6e5d87f430471b2411ced8248a3a2e7333952f9ca4b1301ca7cb16491

Download Submit
C:\Users\Admin\AppData\Local\Temp\dj8T34xHEtkMKhn.exe

Filesize
71KB

MD5
3c47ec281073e074f8a5ad12e98676af

SHA1
0ccff7ab409d40beb590241c6b767bb196d35525

SHA256
162a6677d74ec6bcaaffd8ac98677c3692564842de1c7d8514243fe154f370f2

SHA512
88bdd2f1a303c8cf49924c6c8dbcf4e1973b873c546217ea0aa88f7809f9809545d18292c681d75d1b0e09ea9525013595447e6896f00407e39bf8218a88b3f9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads