e8675781b21f4d690ae6655c41e0abb5a92081a35beae4673c0e39e65e62cc67

Analysis

max time kernel
55s
max time network
49s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30-04-2024 16:25

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General

Target

2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe
Size

96KB
MD5

024add5a9410e40b6379b0de1fcdf2a4
SHA1

8b98d956af203a2d9a22c79cc71e11045ec4392b
SHA256

e8675781b21f4d690ae6655c41e0abb5a92081a35beae4673c0e39e65e62cc67
SHA512

d09a58d85a7ec4ec89ce24c36f0fb40d4eb28bf28b1865a31892fd8cbb71c89780a0ddfae28046e307bcdea6a959bba321c2f0d19f670a44198470b1ff04f2b0
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTQ5FM6TKvv7kt9:ZRpAyazIliazT8DGX7kt9

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1500	ljffi5IiAJBkZRh.exe
4324	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	208	2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe
Token: SeDebugPrivilege	4324	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 208 wrote to memory of 1500	208	2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe	83
PID 208 wrote to memory of 1500	208	2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe	83
PID 208 wrote to memory of 4324	208	2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe	85
PID 208 wrote to memory of 4324	208	2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe	85
PID 208 wrote to memory of 4324	208	2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_024add5a9410e40b6379b0de1fcdf2a4_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:208
- C:\Users\Admin\AppData\Local\Temp\ljffi5IiAJBkZRh.exe
  C:\Users\Admin\AppData\Local\Temp\ljffi5IiAJBkZRh.exe
  2⤵
  - Executes dropped EXE
  PID:1500
- 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:4324

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
7f3ff471fea4aa0c6c7b121cfc6a98d8

SHA1
ea22fa7f1ddeead315bf0da987ed8fb76864f7f9

SHA256
f72366e417880121a8482e7e29ceb3f3b35bc255281ff9e1263abcba60cea785

SHA512
a9da46add4f84ca2b19ff126405d4ab70d836f0333fdbc633cd32f0efae66e032214e5cdaec72f28d5de4277f75f3418bff9b10beca6e878d79cb11682253051

Download Submit
C:\Users\Admin\AppData\Local\Temp\ljffi5IiAJBkZRh.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/1500-12-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads