9931340fecead361b76a4070ceac2503fc17a10423f2c2c84b37cac503e52030

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 18:29

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General

Target

2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe
Size

71KB
MD5

2621cfc2e22757f4565a3a6af2be12e5
SHA1

385ccb7bc002d8ecf4b783000e0060badc3cb65b
SHA256

9931340fecead361b76a4070ceac2503fc17a10423f2c2c84b37cac503e52030
SHA512

6b4c99d272d843d9b5f94e894cf31d6e666fa71bb5847c6f15f5b06e4ee7da9c621d0ca3b154123f04839541de7dc80591a8d8309e12edcdf34e09333183c4e3
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTl:ZRpAyazIliazTl

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3304	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"	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2796	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe
Token: SeDebugPrivilege	3304	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 3304	2796	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe	83
PID 2796 wrote to memory of 3304	2796	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe	83
PID 2796 wrote to memory of 3304	2796	2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_2621cfc2e22757f4565a3a6af2be12e5_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2796
- 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:3304

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
392KB

MD5
1c0dc943a3f01727e52eb61f9b1d3706

SHA1
e3d44f621a9ec5a684c8871a4aa1376063415004

SHA256
2bca962a20508045e72c6f671f0ec4313623b6cf51e756724a553713eeb5e795

SHA512
baa5c94a6a7bffa9311ebdf01195ac4bb410236d9932e227516bdf56e0c395d27704d878ef1df34956f0cee7d1eff60e351e1f135e0d2d7ded64b0130ad4cfed

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

Filesize
71KB

MD5
172511f724b93073a1aea5bd23d274f5

SHA1
b74cfb0ba3a898587fc75e9b4d896cd786d36f00

SHA256
d71af55cb941c90c0a9677629b2e36a8d62460d0d765c2defbd9302bbdba55cb

SHA512
1a69767c40560a3adbe2bb86ec43857fa4e5bf3b2d92117b09e2f78d592af3e276957325def12461d47cf2a0ed5c799dc695e33d8c02a5f965154a97782db099

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads