a1b6e58b67ad1f9994868da19453f416072fb2343f92c25f6c4ad3cc68bbf463

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 05:54

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General

Target
2024-06-10_8b610b9267c808b8ce637f3d7b1fc9f6_bkransomware.exe
Size 71KB
Sample240610-glxnaadf45
SHA256 a1b6e58b67ad1f9994868da19453f416072fb2343f92c25f6c4ad3cc68bbf463
MD5 8b610b9267c808b8ce637f3d7b1fc9f6
SHA1 195935aa90c9faea0fdb0a1743d3a33411ab76ce
SHA512 e95768e4b5dcde5047993c49d32519775d1ba85de942c94fdcecfe19c5a1ea5ab296741a6bcded745205c7ce19615d177d5d527c5c99dbd1b0c788f1bdc2a234
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTzH:ZhpAyazIlyazTzH
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4768	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_8b610b9267c808b8ce637f3d7b1fc9f6_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	2024-06-10_8b610b9267c808b8ce637f3d7b1fc9f6_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1604	2024-06-10_8b610b9267c808b8ce637f3d7b1fc9f6_bkransomware.exe
Token: SeDebugPrivilege	4768	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 4768	1604	2024-06-10_8b610b9267c808b8ce637f3d7b1fc9f6_bkransomware.exe	81
PID 1604 wrote to memory of 4768	1604	2024-06-10_8b610b9267c808b8ce637f3d7b1fc9f6_bkransomware.exe	81
PID 1604 wrote to memory of 4768	1604	2024-06-10_8b610b9267c808b8ce637f3d7b1fc9f6_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-10_8b610b9267c808b8ce637f3d7b1fc9f6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_8b610b9267c808b8ce637f3d7b1fc9f6_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604
- 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:4768

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

excel.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Size 394KB
SHA256 8fc15b3a23962bb977b5d41361d34dad7505a878ba80745b9d1979210bb2ac22
MD5 f6bbaea4a5c89b5663c5bf017159d9c2
SHA1 efd58877971f426339dbfd6271a699c7a5e49e2c
SHA512 a09775b1afd22553bf52c718e752a78f76ace50cf35cb324882d7b4d30418ee783ff6e76e5080d57ec8f07539a6a05d0ef1a11990ee207185d7d7ba20b19c2df
SSDEEP 12288:hS0pfbnPfJ3NwUe7ycNevzJwsdkp27S4tqPS:Dp7fJ3NwONw2WS
MD5 SHA1 SHA512 SSDEEP

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OPdM1vwygh44Son.exe

Path C:\Users\Admin\AppData\Local\Temp\OPdM1vwygh44Son.exe
Size 71KB
SHA256 f10f33c260a9f5d23a450e6d69f9eb5fc44c8c73a12889ebe88cc20daf739ccb
MD5 6c6846338dd05323d136c10fb998bb6d
SHA1 af76973e84e339039fb4862daa10f3f055a3d92d
SHA512 6c1994812c7773de951e29e55ab7a1302e507d0ebd5550e21ef8fb52941142d6829365c399853935edb38be6a9d3794b538a27a9de80d5d3bd85a3b778759bef
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT1:ZhpAyazIlyazT1
MD5 SHA1 SHA512 SSDEEP

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CTS.exe

Path C:\Windows\CTS.exe
Size 71KB
SHA256 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT:ZhpAyazIlyazT
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads