709fda5f67ce10774ba93082410e662ed6491deda7d9a7c83460a739a841a43e

Analysis

max time kernel
134s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
06-05-2024 23:23

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General

Target

2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe
Size

71KB
MD5

4ce9f9fd9985d4f4613173bbfb8c7c89
SHA1

34bcfe0d4077a4075604199b1b59eb5b6c869b19
SHA256

709fda5f67ce10774ba93082410e662ed6491deda7d9a7c83460a739a841a43e
SHA512

407ecbc8afcc6266265f6d813afe414c68f700ddb879c3d0bec1c5e68edbab868028ab17285e24fe1990351aaa99bcc23b45061c8a2c2a78866106c70823799d
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTP:ZRpAyazIliazTP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2292	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"	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_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	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1124	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe
Token: SeDebugPrivilege	2292	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1124 wrote to memory of 2292	1124	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe	83
PID 1124 wrote to memory of 2292	1124	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe	83
PID 1124 wrote to memory of 2292	1124	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1124
- 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:2292

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
394KB

MD5
3eb53c299e27a6457ea0ff09ab94f581

SHA1
82b20b140509dc02193733437a3ae2a30fdbb8ab

SHA256
0b4f8097aa13f9a1a3ca7841f0d849c632ad9a20bb001752de71cc76999ef867

SHA512
53e11b83c94b9ba62b8f28492ac39377a40506fc9d537f72ddee468ecbf3ba2d1008245a1c1459d3024cedd301d4f691549c2733c2671c3788321ca6822bead5

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C:\Users\Admin\AppData\Local\Temp\8l4x39LGsshydGg.exe

Filesize
71KB

MD5
516ccf1cac26e35714ec507312db53e4

SHA1
e502554838c7d85f90a1eb5b26c00d6d0ce24f4d

SHA256
5c0344aadfcedf4eb2e9be48eb1d6cb89b798336298fac176da88ecfb8360105

SHA512
f24fa0ebf2a1dde60660e9c73975a55d5ee95c868bb0843c9612791f55b1e22b380abdf7594d7e10c2c55f7556e207087efb7e480e201cb9c402373e12feb1ca

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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