07e7f71e4af54989f128d51e15b9aea802ee358036c4f72de640392d0f1edac1

Analysis

max time kernel
62s
max time network
53s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
01/05/2024, 05:28

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General

Target

2024-05-01_821b6af44b9a497efd590a0872065b61_bkransomware.exe
Size

249KB
MD5

821b6af44b9a497efd590a0872065b61
SHA1

94cd7cbe7b8b67af830c810d0a53e61aac6c94fe
SHA256

07e7f71e4af54989f128d51e15b9aea802ee358036c4f72de640392d0f1edac1
SHA512

4be9f81a7cc41dafb4d36e7ed6dc49a1db39eb5941dd9991a61eed6b2cfa2af9e2c92a9f77563821fb84cea8b620ccb6eb2fcc921b2bce08821e68af758dc853
SSDEEP

3072:ZhpAyazIlyazTF9NY58kD0WpRFNyrcCQVZTxIOKO+wcWlI1zjvmNuAaJxpEV0ukx:hZMazJY58O0OjZHN+wllI1CBaJM5DQ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1992	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"	2024-05-01_821b6af44b9a497efd590a0872065b61_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	2024-05-01_821b6af44b9a497efd590a0872065b61_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4928	2024-05-01_821b6af44b9a497efd590a0872065b61_bkransomware.exe
Token: SeDebugPrivilege	1992	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 1992	4928	2024-05-01_821b6af44b9a497efd590a0872065b61_bkransomware.exe	83
PID 4928 wrote to memory of 1992	4928	2024-05-01_821b6af44b9a497efd590a0872065b61_bkransomware.exe	83
PID 4928 wrote to memory of 1992	4928	2024-05-01_821b6af44b9a497efd590a0872065b61_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-01_821b6af44b9a497efd590a0872065b61_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_821b6af44b9a497efd590a0872065b61_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4928
- 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:1992

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
393KB

MD5
ef7a30d301d8b53223eede483c65f4bc

SHA1
4af8903a429f9f0b2731a6a3c18ab6dc722e7ec9

SHA256
040849449b6d77690ac58fa9e10fdd04766ad8f9d21f3f28a41382e666216e10

SHA512
04f4c7dbd677df367292bf590086a05f23661a600ca1c4a1d1e1e33da0c3714868a30494c98cab2d64bb3b74420956fe990022540ad7fbfcb4f25fe29ca22a95

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C:\Users\Admin\AppData\Local\Temp\HANLmdLQ4lUJsax.exe

Filesize
249KB

MD5
6fc43e7d4ea9a51ed02c3a77eb0626e7

SHA1
689d45ef758c4431c387ce51a1b3af2a5cc49651

SHA256
c0df8ea91deb4409673e8e0dfc71986b3cd9d90fbf7f3137d13ad1d29260914c

SHA512
55c415d3f54c2b7236cf1ca2bac700c17e2157c33be9f2611fe4db442193214c6eae44b66b0df2966834586769971d5bded46d0682216e63ad3f795414aec910

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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