8e32f8de2799fa5eaacd7bf08d84957a21a2b8ac07fffeeb05c4c29396097159

Analysis

max time kernel
98s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
05-07-2024 18:49

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General

Target

2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe
Size

518KB
MD5

389c307f2d110f0b1338ef835c1a0f06
SHA1

a71e9e9010721fb4ddf4f6dc4195210c0f4a6ff5
SHA256

8e32f8de2799fa5eaacd7bf08d84957a21a2b8ac07fffeeb05c4c29396097159
SHA512

7fc82d28508e347a54b23b959a4d9bbf03abc3ede7a31c48ee7fa7b8d612bde76ea99745b5d9ced02ae53b013139d712e71a29f197b3b68a08e3240f6fbd7e5d
SSDEEP

12288:hS0yVp/SS21bFgNbffYx6hd/VbvAFSBgNwkLIuvHS:DTh1bsbffYx6hNVLA2k8uvHS

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
908	vNcsAIzF6A4fndG.exe
2552	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"	2024-07-05_389c307f2d110f0b1338ef835c1a0f06_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3464	2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe
Token: SeDebugPrivilege	2552	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3464 wrote to memory of 908	3464	2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe	83
PID 3464 wrote to memory of 908	3464	2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe	83
PID 3464 wrote to memory of 908	3464	2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe	83
PID 3464 wrote to memory of 2552	3464	2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe	84
PID 3464 wrote to memory of 2552	3464	2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe	84
PID 3464 wrote to memory of 2552	3464	2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-05_389c307f2d110f0b1338ef835c1a0f06_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3464
- C:\Users\Admin\AppData\Local\Temp\vNcsAIzF6A4fndG.exe
  C:\Users\Admin\AppData\Local\Temp\vNcsAIzF6A4fndG.exe
  2⤵
  - Executes dropped EXE
  PID:908
- 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:2552

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
761a1ba6a96b2e71244c6a185ed2dcf1

SHA1
e8097cec88af7deaa8a9ef8627a002d667bad0b1

SHA256
932360d6403a1940765ddcedbe3a8d40aa763543454fd3204799a0c92b51a91a

SHA512
88a0e4db88c8a8be11779db99dc06053eba83d394360cdf1580d69cba71f518147fb99b4e3af5987b676af55c44b0ba63b6de8294de80a1472ae7c95888bf643

Download Submit
C:\Users\Admin\AppData\Local\Temp\vNcsAIzF6A4fndG.exe

Filesize
447KB

MD5
3f461ca3e3d9da036cf1a4a06ddf4fb4

SHA1
15395e4b656cee3a708bc50c1094e3fa0c46802e

SHA256
cd8e84c1f8d1ee3a7014343e3fb236329d2b67c1ec233ea4b208d99e3f95105b

SHA512
d0cb3f56db648c9ee151990260a864cdcd0d508a1dafcd741d8b2ccd8f73ba29607f384a4e2752502419cfd4a41d2288d7c3ffec93925be85fc39dad9c01e7f5

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