5167d216151b36e6085a5db10ab5396152be0e4e54fe7f5673fdc24666e3d347

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 15:38

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2024-06-01_74f4da336c2a3d079d593059e81d3fab_bkransomware.exe
Size 71KB
Sample240601-s25jlsgd49
SHA256 5167d216151b36e6085a5db10ab5396152be0e4e54fe7f5673fdc24666e3d347
MD5 74f4da336c2a3d079d593059e81d3fab
SHA1 b51245c34fdb5015b573acf7fca00c3e69a0a8a8
SHA512 28e36599c5007b0a1137cc3be38fb589ffeb266d96f2c5f9be8f1ca74056aa4988cdff58caeb19caaf81cf9c14dc4d1ab009ca44b3bd4407bb464249df0a24ac
SSDEEP 1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTr:ZRpAyazIliazTr
MD5 SHA1 SHA512 SSDEEP

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"	2024-06-01_74f4da336c2a3d079d593059e81d3fab_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	2024-06-01_74f4da336c2a3d079d593059e81d3fab_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2236	2024-06-01_74f4da336c2a3d079d593059e81d3fab_bkransomware.exe
Token: SeDebugPrivilege	848	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 848	2236	2024-06-01_74f4da336c2a3d079d593059e81d3fab_bkransomware.exe	28
PID 2236 wrote to memory of 848	2236	2024-06-01_74f4da336c2a3d079d593059e81d3fab_bkransomware.exe	28
PID 2236 wrote to memory of 848	2236	2024-06-01_74f4da336c2a3d079d593059e81d3fab_bkransomware.exe	28
PID 2236 wrote to memory of 848	2236	2024-06-01_74f4da336c2a3d079d593059e81d3fab_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_74f4da336c2a3d079d593059e81d3fab_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_74f4da336c2a3d079d593059e81d3fab_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236
- 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

Loading Replay Monitor...

Downloads

YRyHCYe3FicSkwq.exe

Path C:\Users\Admin\AppData\Local\Temp\YRyHCYe3FicSkwq.exe
Size 71KB
SHA256 b792a4555403f40314c5837ef708659bf01980a6bc800fd229f9b9d7eade158e
MD5 6d3418f01fa0cea2b8cc2d3947dc8740
SHA1 bf69f43cdfc3c0a2b62ce8bdeb9ade1931a63084
SHA512 684fab7b50cfe31a0641c7736ff904e61842c1e5e93aafad8bf3f5b84226ed90e4715ab565e49d205cd9bbde32097a3928748a222b20c0180e6ec2da5635de7d
SSDEEP 1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTp:ZRpAyazIliazTp
MD5 SHA1 SHA512 SSDEEP

Submit Download

CTS.exe

Path C:\Windows\CTS.exe
Size 71KB
SHA256 b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
MD5 f9d4ab0a726adc9b5e4b7d7b724912f1
SHA1 3d42ca2098475924f70ee4a831c4f003b4682328
SHA512 22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432
SSDEEP 1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT:ZRpAyazIliazT
MD5 SHA1 SHA512 SSDEEP

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads