f41e4801b3d6e727d339a3b21535a705824e1f44e9ce00f3586335b82d00e3c7

Analysis

max time kernel
138s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29-04-2024 12:08

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General

Target

2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe
Size

135KB
MD5

73069e0f491358f7dfae0edb0da33a06
SHA1

29ac4914a4fa37e3712f16301dac76bba2ee943b
SHA256

f41e4801b3d6e727d339a3b21535a705824e1f44e9ce00f3586335b82d00e3c7
SHA512

9bd1f2aaa9fd0f5005734de1cbf43cfc426831254a02d72b223ef10d42b33ca411a9ae2e2081f7e5281bc2e6841b17a22e3f8867144ae17698428776e280f6a8
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT8eX+F4ymoWXzBsxlLdLV+Q6fWoqUTb:ZhpAyazIlyazTTfoWuxp9VoeyIL/07

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1100	hIpF8L0kBuFw710.exe
4452	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"	2024-04-29_73069e0f491358f7dfae0edb0da33a06_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	2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3240	2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe
Token: SeDebugPrivilege	4452	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 1100	3240	2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe	84
PID 3240 wrote to memory of 1100	3240	2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe	84
PID 3240 wrote to memory of 1100	3240	2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe	84
PID 3240 wrote to memory of 4452	3240	2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe	85
PID 3240 wrote to memory of 4452	3240	2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe	85
PID 3240 wrote to memory of 4452	3240	2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_73069e0f491358f7dfae0edb0da33a06_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Users\Admin\AppData\Local\Temp\hIpF8L0kBuFw710.exe
  C:\Users\Admin\AppData\Local\Temp\hIpF8L0kBuFw710.exe
  2⤵
  - Executes dropped EXE
  PID:1100
- 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:4452

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
392KB

MD5
afbafdc41143083ba2a1c8359d2f94de

SHA1
19b91e11bf6570eecd3437588fff473aa101eb6a

SHA256
b6f60cae03d76083af6c4ec59d7da3f2eb3f7a2e7765dbed386822fe5cc69c0f

SHA512
dbaf06fbb0318bc16bb9d5006296d40613c5a3a8fdd4a418a99c9bb8a4632f15ef5fdfb69068e253ff12b355166265fd2d60ff019d244e4f0b91b63f7b1bfe47

Download Submit
C:\Users\Admin\AppData\Local\Temp\hIpF8L0kBuFw710.exe

Filesize
64KB

MD5
e97c622b03fb2a2598bf019fbbe29f2c

SHA1
32698bd1d3a0ff6cf441770d1b2b816285068d19

SHA256
5c1af46c7300e87a73dacf6cf41ce397e3f05df6bd9c7e227b4ac59f85769160

SHA512
db70c62fb35a8e5b005f13b57c1ebbf6c465f6ff0524422294c43e27fb4aa79379dc1e300ad11dc2354405c43b192ae06b91c0f525a1f2617e4d14673651a87d

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads