aac3e5b182789e05cf1221ba0d405dbd8402c49a751788d6de09ad6f010fabcb

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
02/05/2024, 06:55

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General

Target

2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe
Size

71KB
MD5

90a499e40e2982d852fea488ab49aa95
SHA1

c41bd6a534f7d947120a313ad87d450fe62f9511
SHA256

aac3e5b182789e05cf1221ba0d405dbd8402c49a751788d6de09ad6f010fabcb
SHA512

eaa628200a802c1492b994dea3feb111628a766ba31ae896f410ea5d0236f6710145c4f77c6f7b5e3086443bbfccf1cb0d17c0772159659992b4d25518ad31b5
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTO:ZhpAyazIlyazTO

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2148	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe
Token: SeDebugPrivilege	2148	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2148	2344	2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe	28
PID 2344 wrote to memory of 2148	2344	2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe	28
PID 2344 wrote to memory of 2148	2344	2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe	28
PID 2344 wrote to memory of 2148	2344	2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_90a499e40e2982d852fea488ab49aa95_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2344
- 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:2148

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\rvdpruKQZ5SS4RL.exe

Filesize
71KB

MD5
9d8e95fe9f87722b84657da02b68fd1e

SHA1
5f51a984b163932122ab9ddae3e7082b8c1f6767

SHA256
ff80cba9bb95b8788222d5ac838d9ebc37700cd506932667c00c26075086139d

SHA512
3f92a38109051530a0a443d148a6bfc9234eb3768d6f8d5591886d38956723ccc1f4c6b39a557c8f0714f00297b4c2b8435be6b7cdaeef1e5d764d42a295de77

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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