b8d369e15894b62f40c6dca218e2bb0f9d18898ba185faea2fe16f5bc19ffc6f

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
27/04/2024, 17:56

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General

Target

2024-04-27_594091670fb3ff6bb995ebf6a16918ec_bkransomware.exe
Size

233KB
MD5

594091670fb3ff6bb995ebf6a16918ec
SHA1

b6e32a5c5711688550a86d50e1680f8e1f878027
SHA256

b8d369e15894b62f40c6dca218e2bb0f9d18898ba185faea2fe16f5bc19ffc6f
SHA512

d0e180b9816172d4b9f5e11017cc5026386252756f0f89c656aa2515e691877e92c6073738e7c0f020e2ac5b2082bcaab901fc830bc79053eb7ba864c96f8e30
SSDEEP

3072:ZhpAyazIlyazTGjZR+miioZoESM2rdkW6YeiOK+yt33rTsP9aHCYXG28pl+s6:hZMazCjZR+mXb/F6YUy9rTsP9qWLV6

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1908	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"	2024-04-27_594091670fb3ff6bb995ebf6a16918ec_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	2024-04-27_594091670fb3ff6bb995ebf6a16918ec_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2872	2024-04-27_594091670fb3ff6bb995ebf6a16918ec_bkransomware.exe
Token: SeDebugPrivilege	1908	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 1908	2872	2024-04-27_594091670fb3ff6bb995ebf6a16918ec_bkransomware.exe	28
PID 2872 wrote to memory of 1908	2872	2024-04-27_594091670fb3ff6bb995ebf6a16918ec_bkransomware.exe	28
PID 2872 wrote to memory of 1908	2872	2024-04-27_594091670fb3ff6bb995ebf6a16918ec_bkransomware.exe	28
PID 2872 wrote to memory of 1908	2872	2024-04-27_594091670fb3ff6bb995ebf6a16918ec_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_594091670fb3ff6bb995ebf6a16918ec_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_594091670fb3ff6bb995ebf6a16918ec_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872
- 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:1908

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\Sk6srgcnj10Xkr6.exe

Filesize
162KB

MD5
6b2a198fcebd99ea420388b183363007

SHA1
e2aeed46e09e62f21a423fcd4ce553df47c2e2c1

SHA256
43f1ddcd5bbdcf161d6816b79b4889e7f75d2ce12ab4f7bcc77d16003a17cdaf

SHA512
557a3e47388dbd8f43081e35db61351a381c260eacb594c70fe81476c6be53cab7af2588db46e414696ec51bb5a03558fd50cf944ec65871210b41347e5be0b5

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads