0f536843c0cff9959f50d6601cd03f16303f3eab5cf6cffe3223ae49abfba1e4

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12/05/2024, 08:01

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General

Target

2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe
Size

71KB
MD5

76b0668ad87ecd8c86b44491e0cf452b
SHA1

12b456d88d909557bae82b15dbbe4df268a91b1f
SHA256

0f536843c0cff9959f50d6601cd03f16303f3eab5cf6cffe3223ae49abfba1e4
SHA512

111b2517227daca1aae9ff4e362906799bc6d5e88d08f3b665a86e41fcdd4d69e85bbea4938fc4ae03be5902ee163ff3e359c0eefca7164c5713d5584045cafd
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTqk:ZRpAyazIliazTqk

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
848	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"	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1068	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe
Token: SeDebugPrivilege	848	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1068 wrote to memory of 848	1068	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe	82
PID 1068 wrote to memory of 848	1068	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe	82
PID 1068 wrote to memory of 848	1068	2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_76b0668ad87ecd8c86b44491e0cf452b_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1068
- 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:848

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
280f991e5deee0fa7905018d7ba4f49b

SHA1
7c569cdb46b88b3513718d5672b34582d6ce7631

SHA256
e62f22ccf38de39a42d1922e81c2c743aa90b1ed6cc044e15c89acf3d973c3c6

SHA512
68d3e050fef9d488a396343d6ad4043430f1246927f3c911824bbb092a04e4fd5f56b99c605a142ad9338b9320e60fa28ffc287527d94fec600ccc550bd162d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\YERZFBVBYTSR2lk.exe

Filesize
71KB

MD5
c8d3ff71792dcecb7bdd80adcf873dbb

SHA1
9e2feec2accdb6d76a2f46b026235de819d8b627

SHA256
f46720eb09a349ed212b077907bf3a845abe65a741056b7378f9ba36304e0636

SHA512
0dd9bd4f47956058a59ba64f74963e74808a709be47b3c306257859ec6934ad88637d2019ed1858db148defe52cf850cef31015b86980fd9c2bedab5f2275924

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads