efe34fec097c9d0abd6586238e87c81fe5c858432f6cfc3b3f4d7d2c497aede1

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 21:52

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General

Target

2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe
Size

71KB
MD5

a6986119a8ce3f27239a777542273d8c
SHA1

a2651fce15380f7a14524ba6439fe5fb66ef69f8
SHA256

efe34fec097c9d0abd6586238e87c81fe5c858432f6cfc3b3f4d7d2c497aede1
SHA512

470ed3f825a751aa76dc49a1d1e3002c4514ec601e55e3548511adb14c0f8739210cb7fad73cbd6922e301a41e10605fa10805ff2cccf5122560d4c27caeae4d
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT1:ZRpAyazIliazT1

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2176 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

pid	process
2176	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-22_a6986119a8ce3f27239a777542273d8c_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

Processes:

2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2204 2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe
Token: SeDebugPrivilege 2176 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2204	2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe
Token: SeDebugPrivilege	2176	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe

description	pid	process	target process
PID 2204 wrote to memory of 2176	2204	2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe	CTS.exe
PID 2204 wrote to memory of 2176	2204	2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe	CTS.exe
PID 2204 wrote to memory of 2176	2204	2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe	CTS.exe
PID 2204 wrote to memory of 2176	2204	2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_a6986119a8ce3f27239a777542273d8c_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2204
- 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:2176

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\JOaIRInzcNugRE1.exe

Filesize
71KB

MD5
df5bff08045351805485371df4a3b100

SHA1
2cdd507e293f0c6a9ecc9f3ca2c837414b919b4a

SHA256
27a56a606abe230637a3cb1ddf3c61450f298df80c56e36ae6013373632ee163

SHA512
5dd64b765a7877a7620f30e64c3eea2ec0e966a4746cc8ebe98abc39f480e8edf5f25ceb20123a56616efa7b4537e310afc5c16bdb774a37a3154268a26b111b

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit