81dc7f5b11e5544f61e2d2b0177b337bc09447e01060ccf745362ebbc624ce58

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29-05-2024 15:48

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe
Size

71KB
MD5

d34cb830e5d4ad38c26d9a69091a2ec1
SHA1

7c0374654a76f28e8d05b412495fb9a2c9ab8ade
SHA256

81dc7f5b11e5544f61e2d2b0177b337bc09447e01060ccf745362ebbc624ce58
SHA512

ab2ebf7b66ee7c6097922c25c332a3871a30031e46c03b259e6bb6d2fd18122902fcfad8952cad18c6b0a691e9cb65ae5c7887ad1edad2b1d7e5d3efa15a9ae6
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT/n:ZhpAyazIlyazT/n

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
696	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"	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	508	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe
Token: SeDebugPrivilege	696	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 508 wrote to memory of 696	508	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe	82
PID 508 wrote to memory of 696	508	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe	82
PID 508 wrote to memory of 696	508	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:508
- 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:696

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
9a91360a248ba5b6ee0ff52a3f3da385

SHA1
3b772cd52327dc86496d99e64f6f2379262ce784

SHA256
e542054e579f0cb3019f03731a82d79066fc7b7c4d6bfaeaa3543388d6505743

SHA512
0913de94d09a657fbfc936337a1e3835d1a7419555867c67397caf64fe0fce2bdd9cab92553e77b426c8d4eb34899774a2dcd8ac09c240459ce73416b710ce9f

Download Submit
C:\Users\Admin\AppData\Local\Temp\jihKuISP5fFkT9C.exe

Filesize
71KB

MD5
52ffebe64ff051b8dbef6b3e795911f7

SHA1
3679036c1ae08803db50b1f7aff67e4e636886f5

SHA256
f03b30c795e1d4db6335298c6d3b6a92d69a2471140b6b2d3e3bbb2b14470020

SHA512
8041ac5b009a8b32b973b6b7adc21d252082d4ba766ef25f2895be7dfd4e2bd40acd086923cd208eab0e37080bafe72f4fe00d6e8c3e981bc85ac700e8efca6b

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

Loading Replay Monitor...

Downloads