2b393806ee0955c3884cc55ecce55f7f7b912c577d9246f0069947f62ba5d2df

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10-06-2024 15:52

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General

Target

2024-06-10_54c699af5550a9a1cd98d7d11f6edd47_bkransomware.exe
Size

71KB
MD5

54c699af5550a9a1cd98d7d11f6edd47
SHA1

333ab8c5de850705b84376f26c6113005aa36dc0
SHA256

2b393806ee0955c3884cc55ecce55f7f7b912c577d9246f0069947f62ba5d2df
SHA512

9d9e32b65350fc4cc153a815ef60f92dc8654fad066bb605222cce87bca828cc1b8a328b8b6fd01d2897b0c693dcd8d1e54f3cfa49ec94030dc4fc91fda73e37
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTr:ZhpAyazIlyazTr

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2452	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"	2024-06-10_54c699af5550a9a1cd98d7d11f6edd47_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	2024-06-10_54c699af5550a9a1cd98d7d11f6edd47_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3856	2024-06-10_54c699af5550a9a1cd98d7d11f6edd47_bkransomware.exe
Token: SeDebugPrivilege	2452	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3856 wrote to memory of 2452	3856	2024-06-10_54c699af5550a9a1cd98d7d11f6edd47_bkransomware.exe	80
PID 3856 wrote to memory of 2452	3856	2024-06-10_54c699af5550a9a1cd98d7d11f6edd47_bkransomware.exe	80
PID 3856 wrote to memory of 2452	3856	2024-06-10_54c699af5550a9a1cd98d7d11f6edd47_bkransomware.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-06-10_54c699af5550a9a1cd98d7d11f6edd47_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_54c699af5550a9a1cd98d7d11f6edd47_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3856
- 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:2452

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\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
789KB

MD5
f70eaa1f6fd1194c58dd17d763c54f23

SHA1
d4a6286a955c7084cbbf456969b23202e151a858

SHA256
6fa6419a02538ab0e6622cb0d204bc3d2393c1a747889fcecb5059cca79413f1

SHA512
48991a094abf4eb614663b83efbbce88f7127a46370ea508f71986b66b7eb662c89fa3e111f2c339fbd26cadabf6310f163173aecd6bd47533e906df92001d94

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C:\Users\Admin\AppData\Local\Temp\agWT5fvrAFvzGjO.exe

Filesize
71KB

MD5
d054d8fbe29b142644dbead81d8030d1

SHA1
57d0b5d2ed797dd3b1864f53f0623497aed9573a

SHA256
c8713959732b8de91d2d34e526c87c5bfe160301b6dc7aa1621379f37d017e1c

SHA512
8a36221c9a2e994aff75e53f9a2bf95a8f61e69263628225c4e50f17d73a54d940b643a6d6d816edc1c3849a536b364534edb69a9b1ae5e8b0440630420a1239

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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