912a840232ed2e5c93accb9fb8ed28f673242c6a64f15b58c5371ecdbbb19ee7

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/06/2024, 05:02

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General

Target

2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_bkransomware.exe
Size

71KB
MD5

21f00153cfc98bfb9d43f7cb13f02b6e
SHA1

05d7572596beb5c91f7e4132f1d0512c50959660
SHA256

912a840232ed2e5c93accb9fb8ed28f673242c6a64f15b58c5371ecdbbb19ee7
SHA512

f9d9d830e60aa880f408fb6919e2a84137cefe599b595c765ea8c098fbc440171d048cc2bad18c3818e6bcf9742a3a33cc58d80f8241cdc5d366cdeb05a41a15
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTq:ZhpAyazIlyazTq

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2308	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"	2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_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	2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2868	2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_bkransomware.exe
Token: SeDebugPrivilege	2308	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2308	2868	2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_bkransomware.exe	28
PID 2868 wrote to memory of 2308	2868	2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_bkransomware.exe	28
PID 2868 wrote to memory of 2308	2868	2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_bkransomware.exe	28
PID 2868 wrote to memory of 2308	2868	2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_21f00153cfc98bfb9d43f7cb13f02b6e_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2868
- 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:2308

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\k8XpchK0vrx5fF2.exe

Filesize
71KB

MD5
bee0cae84bc547ffae19d5684e49abf6

SHA1
5101762f9dbe68a2af9d79f4c2e46ad8a57f03c2

SHA256
bac614abe6e6bc9352484fa0b2917ca7c9caf5cc7b62692931932988f729bf07

SHA512
3f47a94c608fd2720eb657d6e8a3adfe5ee256c9a8e365ac7da3ba3617f18f0cb3262ffc940a9f868c006749516233431d8d6620807887530ad5c59448ce26a8

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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