54b8d08a2982a3f7a62ea17d79deeed283391f26e60d8733f7483a502a904f40

Analysis

max time kernel
67s
max time network
52s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-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
5084	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"	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_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	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	212	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe
Token: SeDebugPrivilege	5084	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 212 wrote to memory of 5084	212	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe	83
PID 212 wrote to memory of 5084	212	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe	83
PID 212 wrote to memory of 5084	212	2024-04-26_45f449a0f45ff40fecc07862dc7333e3_bkransomware.exe	83

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:212
- 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:5084

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
395KB

MD5
5112a48b55d40cbace50818ab171df14

SHA1
53fbd5dccd7a60297e0200917e5419c33a3cc5a4

SHA256
fefba746bc4fe43c1ccbc6a8234fe235ba529bbeeee5c2499b51e070826bd928

SHA512
959bf97633421a3f62f96d9c55f8a9d1d2c94e28567f1d7ad6b260ef633a114b20e05a4e10234371455c8ce61ccf6ed7c9cd22a9c050b76a649bece6282baff2

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C:\Users\Admin\AppData\Local\Temp\vdrq2fgdOXAcFHu.exe

Filesize
71KB

MD5
423316a30cf0206ce047cc7a214be72f

SHA1
033134b5356b655d95c43199e18fa616bbdc627b

SHA256
46169018809f28a82f0e1a799c9c76b47196bcd3a32ce0614cbe49c7a6124a44

SHA512
21a4eae8b9097801912f642517be182164d47113c7d39814d82579339e6d2454fdf1387f21174357e4cd299adda560e91c6ef578bee8177460bd998d96cb4340

Download Submit
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