90ecb39b66c300d8dec72e3eada3ed936d5caa6855c20f4191629fa81ca088b4

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/05/2024, 06:26

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General

Target

2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_bkransomware.exe
Size

71KB
MD5

2742d56a7a2a5b906c723ae86d5309e1
SHA1

e91dc1a8515f4f13e6277c7c308a61c74496234a
SHA256

90ecb39b66c300d8dec72e3eada3ed936d5caa6855c20f4191629fa81ca088b4
SHA512

9b683ae96f8ea2f6cfcee1124c6977aa32b2adc7e0de1419156a4cbfc219858993daf52efb0968605532f9500ccc7ee723764202d1777f43bce3c60dfeb9359a
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTle:ZhpAyazIlyazTQ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2484	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"	2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_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	2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_bkransomware.exe
Token: SeDebugPrivilege	2484	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2484	2324	2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_bkransomware.exe	28
PID 2324 wrote to memory of 2484	2324	2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_bkransomware.exe	28
PID 2324 wrote to memory of 2484	2324	2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_bkransomware.exe	28
PID 2324 wrote to memory of 2484	2324	2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_2742d56a7a2a5b906c723ae86d5309e1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2324
- 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:2484

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\1ITe0AkOoPQ1Eco.exe

Filesize
71KB

MD5
184a77b13949c8b807662d1f7f07209b

SHA1
9161e9fb011781cd863749dad0182be95b38ca2c

SHA256
be4418dcad395e0e07364b9ed45f6ac96c53cc9f9f950b407948e947d0084dd7

SHA512
79492a7ce6617ce7d5a611a226c195aba9390bfe5eaec2d9353d464911cbb646a9cf34e68250862365ba993155d06702fe5e3926492a7802b3d51e42a7388ccc

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