feb22acf8b7b22685e40dc29188450f30a8e0c917c7ee495043a4b23e1946d3f

Analysis

max time kernel
148s
max time network
151s
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, 15:27

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General

Target

2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe
Size

96KB
MD5

b309a91c019652d812e8ca2d0194d426
SHA1

9f7190f4ec54d5b959b9789bc332215e251c577e
SHA256

feb22acf8b7b22685e40dc29188450f30a8e0c917c7ee495043a4b23e1946d3f
SHA512

6dcd081daffc5837541c4cce1dcc12b58fdd9639c1c4eecc476bc42ed4559049961aceac10e235d49c1fc0046773c88dfc187d841701a0f7c4cff39645f0d9c4
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTdBMpa7V+iqcmq1xIcglja+9Dqj:ZRpAyazIliazTkpaxNqBOIPuYY

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1588	ty3MNaYVwdRqp5u.exe
3128	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_b309a91c019652d812e8ca2d0194d426_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	2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4228	2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe
Token: SeDebugPrivilege	3128	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 1588	4228	2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe	83
PID 4228 wrote to memory of 1588	4228	2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe	83
PID 4228 wrote to memory of 3128	4228	2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe	84
PID 4228 wrote to memory of 3128	4228	2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe	84
PID 4228 wrote to memory of 3128	4228	2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_b309a91c019652d812e8ca2d0194d426_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Users\Admin\AppData\Local\Temp\ty3MNaYVwdRqp5u.exe
  C:\Users\Admin\AppData\Local\Temp\ty3MNaYVwdRqp5u.exe
  2⤵
  - Executes dropped EXE
  PID:1588
- 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:3128

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
0e4e9e11f9082c98dc570812f18e5594

SHA1
c83b58c0cebcadbc1df220c26e09b70ed9823e2e

SHA256
d54f5f9bf21939c1e94716c09edb4753dd83ee6cf5a1e25006d0f43094f61757

SHA512
45d3cacdbb5687c10099cfd2f80ca6475b9587de8cca3723fdd78be0c8b5c823b6d4f97c8d460ad622174dfa2394a5b77f3e71e9e116abcc8cae01b2b8d2e252

Download Submit
C:\Users\Admin\AppData\Local\Temp\ty3MNaYVwdRqp5u.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/1588-11-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads