cf0e13e3abf35795012773a1cf9ed4473fbbc58e98c380c0178640f04e1a6d26

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
14/05/2024, 15:40

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General

Target

2024-05-14_f3c19c0290b9273636df0ee541450168_bkransomware.exe
Size

72KB
MD5

f3c19c0290b9273636df0ee541450168
SHA1

374c6460e08e2e745b1066100083203ef10ca9cf
SHA256

cf0e13e3abf35795012773a1cf9ed4473fbbc58e98c380c0178640f04e1a6d26
SHA512

02ef16edd9873ef4d6632e060b56a378d9e8beae83e32f8c2aae8300b8af3482f97e75f343f4645121ef270226326fa50e4ac6c24c2ee3a79786aad6b818e0f6
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT9/:ZhpAyazIlyazT9/

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2724	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"	2024-05-14_f3c19c0290b9273636df0ee541450168_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-14_f3c19c0290b9273636df0ee541450168_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3664	2024-05-14_f3c19c0290b9273636df0ee541450168_bkransomware.exe
Token: SeDebugPrivilege	2724	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3664 wrote to memory of 2724	3664	2024-05-14_f3c19c0290b9273636df0ee541450168_bkransomware.exe	82
PID 3664 wrote to memory of 2724	3664	2024-05-14_f3c19c0290b9273636df0ee541450168_bkransomware.exe	82
PID 3664 wrote to memory of 2724	3664	2024-05-14_f3c19c0290b9273636df0ee541450168_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-14_f3c19c0290b9273636df0ee541450168_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_f3c19c0290b9273636df0ee541450168_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3664
- 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:2724

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
0aa7af417b3b88ef501d15f156c57789

SHA1
4295451705e6375575a67bd2ed1294fdb259de9e

SHA256
7e0fa9bf420706814944ed3783cdd1093155d1190173044ad78e38d0416948cb

SHA512
c2af2d60902c51b756a99bcbb84a804a2c70da1ee1dc29efa91e0903158848653a03867550b75515929e919d07fb011f580dc71e157f46599adcdd0d84ad2747

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C:\Users\Admin\AppData\Local\Temp\dXpXmcNQqt2cJIy.exe

Filesize
72KB

MD5
c013a651699df0e469c50f615dd31af6

SHA1
dfa63cef533619a9ac0ce582bd6a4b027ed78bf6

SHA256
50c77716ee0dd7456b2931de9c3b2c897ad3ac5327f7ef54769600a68142ac78

SHA512
60ea6b4e56b346fbee6fb0590ea81f6044a0cb713f26e90cb643a7aebb08279430599b791d5023bedbb6b3260c8b42ee3aa220c97918babbcb750003663fb264

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C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads