a3a86d3642bc4a8fbea9fcf116c4edf9609bf90df01bda2ec7ee9b49ba8c03a9

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-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
3316	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	3420	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe
Token: SeDebugPrivilege	3316	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 3316	3420	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe	86
PID 3420 wrote to memory of 3316	3420	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe	86
PID 3420 wrote to memory of 3316	3420	2024-04-26_46c4e50dca0114ec6d7e4c0c64108543_bkransomware.exe	86

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:3420
- 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:3316

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
a5b2e07eaeb397f54fe048c378c622ce

SHA1
072d6e5021b3018a2574e1d198ae692264db5bce

SHA256
fbb2299fcf15d8d632b4603db6da4ce93b8cd7ac499edaba0c463033e45d503d

SHA512
b4e39cb7d8862b38c8b8d7742ab9d548d353631f8d38e691b46daea7602e6c2bd2ddaabc7fe6d724f07461f7977593c890260d77a8170d5fcf278dc5ab5e2bf0

Download Submit
C:\Users\Admin\AppData\Local\Temp\HIezxFHa2y0Fx0e.exe

Filesize
71KB

MD5
f233b419e1f4473cb61cc1b0172c8d7a

SHA1
b17930dd95c3af03b4e1375237d1282f6642cddc

SHA256
845f84388b527733919933bce30bd9390317fbcb83921ff09271943e59320f35

SHA512
704a20994ce593e08e8bc2a861bdec8a5a927ed7fb48525964740efb2430d31f04859b4d220dae472a8f772cdc8d2ac443e418412f8ab2ee37de6fd2b1551ad2

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