3444e85b9dff2f89ff9083e9dec707415e894b687a4ebf281038d1063de4109c

Analysis

max time kernel
134s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04/05/2024, 09:41

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General

Target

2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe
Size

74KB
MD5

9c4470fa3a31d90e505f264371252f62
SHA1

484870198c0c3c41aa390bfbbc6a2f9aaf9c4d7b
SHA256

3444e85b9dff2f89ff9083e9dec707415e894b687a4ebf281038d1063de4109c
SHA512

1d72aa75513f7395fda6a5488f9d3f7c36c5bfa844c30a13e7925701210266adb303cb0a5598ef90ed3c8bd5e70089d79f93fd4cf198209eb3c6fa76d9bb9819
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTD0mPT:ZRpAyazIliazTDT

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
212	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"	2024-05-04_9c4470fa3a31d90e505f264371252f62_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	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe
Token: SeDebugPrivilege	212	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 212	1712	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe	84
PID 1712 wrote to memory of 212	1712	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe	84
PID 1712 wrote to memory of 212	1712	2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_9c4470fa3a31d90e505f264371252f62_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712
- 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:212

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
fe0138e41f3f3094901261ee7d5cfa21

SHA1
0182544c590c181bb1a4190c8abe001f2bb7596f

SHA256
2b6ab3f4b974867ff94b49c5b96435db74175b8a37a9e3fba43c9b0580d9c8e6

SHA512
2f281b1ca138e4e9c362348f39e64198631f3a87c68cfe7ce2ae010862a4cb819b10bcd3dc3301af988aa31e4882eac260a84020864051e16084bd8f11da566e

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C:\Users\Admin\AppData\Local\Temp\GfZCRt519m0stz1.exe

Filesize
74KB

MD5
fc2d05ce7f2d3e55059c957945593948

SHA1
91b16c8e5315a5e3d0897a69665dfff988cd619a

SHA256
74e1a51f8127ddf9a6c2a0d0ef60a7ffac693a9658dfecab94caffe9927f83c8

SHA512
7fb60f4deaeeb3c73f3eb0a3cf512e5e44ce239e7fc09485d2ce4292d93ead041036ef44c5848f4b99c496bce2d581ff01546a84d66ba4684a389f926bd53fe6

Download Submit
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