a3a86d3642bc4a8fbea9fcf116c4edf9609bf90df01bda2ec7ee9b49ba8c03a9

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 08:23

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General

Target

2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe
Size

71KB
MD5

46c4e50dca0114ec6d7e4c0c64108543
SHA1

e5adb32e616aef5d95372132dbe65236b5ea9bf3
SHA256

a3a86d3642bc4a8fbea9fcf116c4edf9609bf90df01bda2ec7ee9b49ba8c03a9
SHA512

3343d2fad00453c1e286876596a912b50cc9c7f27f1dc801bff7346fb4742274bb80f7961ba102f64c10df0978ba0b1a03726b42c1bea5c7b15f8cb094ebf0cf
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTRj:ZhpAyazIlyazTZ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2344	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"	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_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	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2308	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe
Token: SeDebugPrivilege	2344	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2344	2308	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe	28
PID 2308 wrote to memory of 2344	2308	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe	28
PID 2308 wrote to memory of 2344	2308	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe	28
PID 2308 wrote to memory of 2344	2308	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2308
- 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:2344

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\8hDcMgaFsWwBXR1.exe

Filesize
71KB

MD5
937302e0038c0e21e501061ed3dabab8

SHA1
e10636a96723001eb0d06c3c8ee23127707e6863

SHA256
ab0531a0c144c95a464b0b3a000b6a4e5a3a164bdf6f6c679d3b2595c4cb6123

SHA512
c213d2481908ac190938e1c8d04f25715ecdced198f35ff763fd06d794e5917408f25dc81e462c35737e034a7156a7d23d294b86a74e05b5729a950631e2c898

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