d5ec007e65e3c95e13a9e68052ab6e8fee90200986c82f3d5d46eb42d8da3507

Analysis

max time kernel
66s
max time network
53s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 12:14

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General

Target

2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe
Size

71KB
MD5

cb15d55ed428f30fa691321f394c440c
SHA1

13a55f56b8a72ec7f83d52c1c60c638066c0ae8e
SHA256

d5ec007e65e3c95e13a9e68052ab6e8fee90200986c82f3d5d46eb42d8da3507
SHA512

d2f2eb3b0ba80f72488fa9bc8223a3bf9f2e4bb4e63cf33b745078ddb8f64ab21a8859e15e393f93222ed829a2d8420871dae601b5c31571d74c264abd1ae2ef
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTEC:ZhpAyazIlyazT7

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

4932 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

pid	process
4932	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_cb15d55ed428f30fa691321f394c440c_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

Processes:

2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1784 2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe
Token: SeDebugPrivilege 4932 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1784	2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe
Token: SeDebugPrivilege	4932	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe

description	pid	process	target process
PID 1784 wrote to memory of 4932	1784	2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe	CTS.exe
PID 1784 wrote to memory of 4932	1784	2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe	CTS.exe
PID 1784 wrote to memory of 4932	1784	2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_cb15d55ed428f30fa691321f394c440c_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1784

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:4932

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
392KB

MD5
424c9580eb6550140564a978b0005b1c

SHA1
3365109906dcff8757a6c75caaa25ea3fb1cf2e5

SHA256
1b4d4650d3bd842112e21c8e6eb7b33d588d14410d052f501ef28e9e1613cffb

SHA512
e307f30ff53db169deffc687000921a8c7b78243c41172f0569b0224581f7216a9de734c9091a20277b989e2da27c3983acdcd9867005bc03b656eedbaa44f3a

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C:\Users\Admin\AppData\Local\Temp\vz9rwFHIyu6tt6A.exe
Filesize
71KB

MD5
dc3f6928834037433c2d746474732c1a

SHA1
8a830c602654c5cc92cea60d33968ecf18fb6355

SHA256
3f6d8d2ed179dce1b5492f1847cd6b284ed17bb1c0e8935415113b363fd3a6b2

SHA512
714500120312c9cf5a70aac3680fb054537dda9d10507d6b924c22bd9b5eaf41c0aa37e4744e0497c3b5a8d6e81a7041f2f3a71d685ff2d2da5a77d1c2dd9b47

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C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit