54b8d08a2982a3f7a62ea17d79deeed283391f26e60d8733f7483a502a904f40

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 14:04

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General

Target

2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe
Size

71KB
MD5

45f449a0f45ff40fecc07862dc7333e3
SHA1

8f59dae689651d9c4499b2fa4ab5f3e1b231030f
SHA256

54b8d08a2982a3f7a62ea17d79deeed283391f26e60d8733f7483a502a904f40
SHA512

895081ca453a27efdada508cea2ef4b3de51044e718a0fb10e33bc3780cc2314714f1b92a6209fb65216b41aabfbdabd366554b6e505e16049ed56e1afa72333
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTXc:ZhpAyazIlyazTXc

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2824	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"	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2288	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe
Token: SeDebugPrivilege	2824	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 2824	2288	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe	28
PID 2288 wrote to memory of 2824	2288	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe	28
PID 2288 wrote to memory of 2824	2288	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe	28
PID 2288 wrote to memory of 2824	2288	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2288
- 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:2824

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\6KTGaHo74nRjkJg.exe

Filesize
71KB

MD5
bd1ee76fbabd87c04eb369162893147e

SHA1
345afb407cf04aa5c01e8cdeed5492c021715358

SHA256
b2f51f395227cc2e3adf071651f0031c5345023edb41bc8fbdf02bdf659ee267

SHA512
267a7632f2ee4d6fb3f9e2475f07b13a624d2c8329c07fd0dc518cb8f3c5e6b59464ba679cf03f3bb745f0be0ab0b309ec6694152a14dda2c1fb81c1aa552486

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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