72537b300293bf926024f5ff19ac4e92bb7c018e4930b4fa17c466a7bb03d1ec

Analysis

max time kernel
133s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-05-2024 18:50

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General

Target

2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe
Size

71KB
MD5

0efe7dfe86adad6ffd274f44b0da89cb
SHA1

8eb3a4e35f45e1b4ee39ecc94a48f68fddb727b0
SHA256

72537b300293bf926024f5ff19ac4e92bb7c018e4930b4fa17c466a7bb03d1ec
SHA512

c0505e6f347088919985366666aaace633295425b8a45df422170d541334082da38f547bc835681e6fefffdb02f909c3c72d703739fd2281e31f0c1725ca69b3
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTM:ZRpAyazIliazTM

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2336	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"	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1824	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe
Token: SeDebugPrivilege	2336	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 2336	1824	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe	82
PID 1824 wrote to memory of 2336	1824	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe	82
PID 1824 wrote to memory of 2336	1824	2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_0efe7dfe86adad6ffd274f44b0da89cb_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1824
- 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:2336

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
395KB

MD5
6240f451880607a5dc884f2e2ab5fd8d

SHA1
b3efc400b0507fcc62b7600dd3bddb678f3d6489

SHA256
2aba17d3a86b00f6c1c723b9212c0b107b8963b5d504f35470ca2e2a2240fbb4

SHA512
29f6f8bbcc5aa719b5f8bddddbccd8d7502d5e68a9fd7f4c074f153b7595ebc80d7aa6c3bd09d8ac6d40de2fe9b5ce3a52a890af59da3fd9a9d075ba65ceff3b

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C:\Users\Admin\AppData\Local\Temp\mTV1NisWtT6W6Fw.exe

Filesize
71KB

MD5
f3464796242ce6e480a0c26c604c1a32

SHA1
fa4b053d098fe7cb10a77c9b8040c88755180b78

SHA256
707c24ca989b28a705e9f2075eee0cb4cd59bec0db5d7e7436aa1d480f4860de

SHA512
73611ea5c6d2e604037a714b877e04b6b8692a37cdaf30d05ac8e1fba1ca824517c0b9e7311a992131846a6fb3e8cc91c2be87269eac573bc633b89d8113a823

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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

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Downloads