1bf5f7de8b3d5aa44a5206e7fa26734c3abe8269803798f53bd44ddf46e04a1a

Analysis

max time kernel
92s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 22:28

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General

Target

2024-05-09_48089c930b2218e8d5c606c0d5505ee0_bkransomware.exe
Size

71KB
MD5

48089c930b2218e8d5c606c0d5505ee0
SHA1

0d85a6e9eb6131a10018ef1e305a87c0f6e4ee5f
SHA256

1bf5f7de8b3d5aa44a5206e7fa26734c3abe8269803798f53bd44ddf46e04a1a
SHA512

8b13782afeadeb64f69e7f7a125fe37f0b97d7393125f694e035f6bd18f6ab4807af71b8d5cc153dc9d16416a1790b4296388f31562225d63eb9a092d536b09c
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTC:ZRpAyazIliazTC

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4076	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_48089c930b2218e8d5c606c0d5505ee0_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	2024-05-09_48089c930b2218e8d5c606c0d5505ee0_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4300	2024-05-09_48089c930b2218e8d5c606c0d5505ee0_bkransomware.exe
Token: SeDebugPrivilege	4076	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4300 wrote to memory of 4076	4300	2024-05-09_48089c930b2218e8d5c606c0d5505ee0_bkransomware.exe	82
PID 4300 wrote to memory of 4076	4300	2024-05-09_48089c930b2218e8d5c606c0d5505ee0_bkransomware.exe	82
PID 4300 wrote to memory of 4076	4300	2024-05-09_48089c930b2218e8d5c606c0d5505ee0_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_48089c930b2218e8d5c606c0d5505ee0_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_48089c930b2218e8d5c606c0d5505ee0_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4300
- 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:4076

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
0c3489e7ca5eee87e3f36c1b2de16f7f

SHA1
14cc533912cfeae410f2341d2ab2f6514896004d

SHA256
789697232dd9003c8ad5670ea234106495321f1776b595b57a19760c784f3b25

SHA512
6a7f79673c2f17a4023ada3a23d0bd403815d7048fdedeb731e8be530d44de470e2ef2f2d0929816c84de7da5196886fdaee3657dfc88ff36dc34cad2d4e201f

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C:\Users\Admin\AppData\Local\Temp\kPIxNOz22jVT6Q7.exe

Filesize
71KB

MD5
0a76d7a6fa0ed70f8138f644617b802c

SHA1
0a5fc1c01046cdca7599d7b7e8235456ab868d89

SHA256
ede0fbf4568639043012a2c248a7510d9a8867bfe4e6dbcaee3e6921c71dadc7

SHA512
0f05488de07d6340fa1dc7c35cd38cbea133125da2c7c866cd3cd6f099443703af617311dc90e0f33b169bf03c9e391789f0800c6c15c54d79094e2ac222656d

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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

Replay Monitor

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Downloads