e3ade72aceef7187876f37ab94070aa794f93692a7b0ace64ae1adba44fc4a01

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/07/2024, 10:26

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General

Target

2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe
Size

214KB
MD5

099c76c2bb335e8892e101b886571457
SHA1

3a277ed6de6f987682e41b309e9cf3b4eee48085
SHA256

e3ade72aceef7187876f37ab94070aa794f93692a7b0ace64ae1adba44fc4a01
SHA512

342d1386142d17be21e0893e61f8356c2d2920798923473d99c59a32ff07b83571e08cd5ec6a45638f60487ea8e72b0f02c00351e23092b14f5af7e4e3d0c3de
SSDEEP

3072:ZhpAyazIlyazTkUZmsVXBIANxyd9SNXaDHWDEa0nakIsorSghkXMCZ0PgRlLxK:hZMaz202ANYPSXaiDdr+5Z0PgzLxK

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2272	O4Y7PNliCsrIf5A.exe
3068	CTS.exe

Loads dropped DLL 1 IoCs

pid	Process
2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.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"	2024-07-07_099c76c2bb335e8892e101b886571457_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	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe
Token: SeDebugPrivilege	3068	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2272	2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe	28
PID 2172 wrote to memory of 2272	2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe	28
PID 2172 wrote to memory of 2272	2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe	28
PID 2172 wrote to memory of 2272	2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe	28
PID 2172 wrote to memory of 3068	2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe	30
PID 2172 wrote to memory of 3068	2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe	30
PID 2172 wrote to memory of 3068	2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe	30
PID 2172 wrote to memory of 3068	2172	2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-07_099c76c2bb335e8892e101b886571457_bkransomware.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\AppData\Local\Temp\O4Y7PNliCsrIf5A.exe
  C:\Users\Admin\AppData\Local\Temp\O4Y7PNliCsrIf5A.exe
  2⤵
  - Executes dropped EXE
  PID:2272
- 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:3068

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\Temp\O4Y7PNliCsrIf5A.exe

Filesize
143KB

MD5
b27ea830fb39bc056e65f9a2260ae216

SHA1
b69e40ee5cabe0721d2d1e9fbdd4088fd87592d6

SHA256
fb7fab836f744d669451dcd38aa7d2a9c74c6af893c258d079439b58abce70d8

SHA512
22cad79d90a949174828ee5e3ce621113591c7c991c55c1a6a44a4555002adeb3bcbd9bab6cfbbfdefd663b76ac2dae96d70a01c527b312c7e8d223334a30219

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/2272-12-0x000007FEF5973000-0x000007FEF5974000-memory.dmp

Filesize
4KB

Download
memory/2272-14-0x0000000000FB0000-0x0000000000FD8000-memory.dmp

Filesize
160KB

Download
memory/2272-15-0x000007FEF5970000-0x000007FEF635C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads