740e00925f9d3f8c2141279a81888c965bd147071708f646163d40e5e16a31a9

Analysis

max time kernel
136s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 19:06

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General

Target

2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
Size

71KB
MD5

6d418da3a9e4ebbf92f9e3a874840860
SHA1

b96fa5fe9bf71eda7414fe826fd9c405fd854a07
SHA256

740e00925f9d3f8c2141279a81888c965bd147071708f646163d40e5e16a31a9
SHA512

b38c0b0b99d948b80eeb61ebe798dfa5a2f3f4d726f70b56662a831c61e3199cd9543e25dd79c074d16cf7cdabe3314baefa4ca9e411dbb25dd648f9cc275820
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTe5MP:ZRpAyazIliazT2MP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

3100 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

pid	process
3100	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_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

Processes:

2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1100 2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
Token: SeDebugPrivilege 3100 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1100	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
Token: SeDebugPrivilege	3100	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe

description	pid	process	target process
PID 1100 wrote to memory of 3100	1100	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe	CTS.exe
PID 1100 wrote to memory of 3100	1100	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe	CTS.exe
PID 1100 wrote to memory of 3100	1100	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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:3100

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
822c71bacda2f4b1e31d9fc4e821b64c

SHA1
d10476ab769952a15c4958ba266f0c9ebc045cfd

SHA256
718767f28a31a31d0a7affcfa66aaa2d650a46abe2029bfc93ab1128fa221f62

SHA512
879a5792a45924f2392cfa147e31e721cff84f38c793443b7114a7885be22029bd6a3d3c70e86914c101a8c492678923e4da8a6c4b6f65cc199da81ee060890c

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C:\Users\Admin\AppData\Local\Temp\zcq6GTuAmfULogB.exe

Filesize
71KB

MD5
931923351cce6f0929f5ec9ce4f456a7

SHA1
b0d64445f549fa3d3a00fba7815baacc2b5b02bc

SHA256
d02b87ed70301a7bc3c102c480d73f2b62c978c1f0103690e5350957af13dd58

SHA512
6987baab3803475785f74ba751fa34795abd6692bb35ce948777c243b22fa847e111ad8624a0fa508fb5be2d30d944b8d7a452b56ddba9c166d776561b936378

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit