3d1eb961c24b0e72d0be10ecf3626439529b0be7e3bc86fc8f5c0a179521e0b4

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
27-04-2024 22:40

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General

Target

2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe
Size

71KB
MD5

b197c3c762a8b11ba182071340378d71
SHA1

a124838a410d13989b415c719b317c2d7f266388
SHA256

3d1eb961c24b0e72d0be10ecf3626439529b0be7e3bc86fc8f5c0a179521e0b4
SHA512

8237c54b2dd69b92b5a65a4a9adc3e85cab7dfeda76b3a1fb0531d0809d54521409d61d22797fc20bcce1b0e57c541248ac3f2ed96aaba267fffe5762bac51da
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTS:ZRpAyazIliazTS

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

1476 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
1476	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CTS.exe2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe

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"	2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1608 2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe
Token: SeDebugPrivilege 1476 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1608	2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe
Token: SeDebugPrivilege	1476	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe

description	pid	process	target process
PID 1608 wrote to memory of 1476	1608	2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe	CTS.exe
PID 1608 wrote to memory of 1476	1608	2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe	CTS.exe
PID 1608 wrote to memory of 1476	1608	2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_b197c3c762a8b11ba182071340378d71_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1608

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:1476

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
395KB

MD5
1414eca140ed7fb9572491a14099ea6b

SHA1
e7d51eca7eb274845a03d6cd8600ad9a9355214d

SHA256
e5c7d87233f3a1844e2a004ae4ea4e70866541413c7c8192986ee50bc93f41ce

SHA512
ac891524145fa931714d70f60536e8f743b270d5a578a5aacd7d6d9fd17cbe0ac791782fe32fdabd78e4b26cd1231841160698613082f56db7f066a02463f7ba

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C:\Users\Admin\AppData\Local\Temp\QVbiWvp7GlMlUnZ.exe
Filesize
71KB

MD5
30feee10e40dd98dc47b8c434e2973a1

SHA1
437d408272c301b78d250d4293fa2b9e088e2f70

SHA256
cb5c79896fe8238ecb6722671a4e19a65c0b6464a4f279c722d62da2f63cd88b

SHA512
5ba939e777c3731c0bd5ad3ef0e4f97c79cc7f1b7ad7734ba291c60b6c91facdad1978cc93693303a2c20b7d20ed110b1b9866fa7ca0bdeb2cce0a5d60dc7088

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C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit