ff76606adef595abbe1c8282b6777e9d3dbb8201804d5e275501a8d981aad696

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 04:31

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-04-26_27d8d1c96a461f4798e044b1346e5be1_bkransomware.exe
Size

71KB
MD5

27d8d1c96a461f4798e044b1346e5be1
SHA1

2f0280440377616cc58b517e6268a929b8c23db6
SHA256

ff76606adef595abbe1c8282b6777e9d3dbb8201804d5e275501a8d981aad696
SHA512

7e787b3012294c518533995f9e22ad245382a185278bdd84fc1f627ca24d52c6b6c44002e562df52520d8846f55cfea835cd7c2ac78c59e6a67a405342cc8351
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTxf:ZRpAyazIliazTxf

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2136	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"	2024-04-26_27d8d1c96a461f4798e044b1346e5be1_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	2024-04-26_27d8d1c96a461f4798e044b1346e5be1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	2024-04-26_27d8d1c96a461f4798e044b1346e5be1_bkransomware.exe
Token: SeDebugPrivilege	2136	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 2136	2000	2024-04-26_27d8d1c96a461f4798e044b1346e5be1_bkransomware.exe	28
PID 2000 wrote to memory of 2136	2000	2024-04-26_27d8d1c96a461f4798e044b1346e5be1_bkransomware.exe	28
PID 2000 wrote to memory of 2136	2000	2024-04-26_27d8d1c96a461f4798e044b1346e5be1_bkransomware.exe	28
PID 2000 wrote to memory of 2136	2000	2024-04-26_27d8d1c96a461f4798e044b1346e5be1_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_27d8d1c96a461f4798e044b1346e5be1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_27d8d1c96a461f4798e044b1346e5be1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000
- 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:2136

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\Temp\8Phu5kYDnxYl5OR.exe

Filesize
71KB

MD5
17a55582176814aefdc491393609b900

SHA1
46c226a730eca9d16f4dc8773597c254a923c245

SHA256
644e46b3f56839d5b771bf613d18ce5c726c4c8b20acc1c9407648ff710dc6cf

SHA512
936ee1cfe0af1087b4552eab9ffe73a78fdfb4b5fc4c45269e53450199c4b0a8ade14c1fc32b1ab578fc0836a2289ac62ad98726a917427fa174068d6e64ec10

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

Loading Replay Monitor...

Downloads