1303d127e84d7a733997ec2ae6b9ef0d684fba84fd0e61cb56ddfad967cb9acb

Analysis

max time kernel
67s
max time network
49s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29/04/2024, 12:51

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General

Target

2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe
Size

172KB
MD5

efe7969d21c8557c72e22560e43d1e80
SHA1

800fefea2b0b086b84cd735d7ea95a1209033f8d
SHA256

1303d127e84d7a733997ec2ae6b9ef0d684fba84fd0e61cb56ddfad967cb9acb
SHA512

faf51d5fa70f0edf47856ad29f20825c0737f1ab179270a4986efb39ac61a0593eba7236b855f6e6fb6d25fa692c77fcb713f78b7364abbab5fe03b3b8c87f11
SSDEEP

3072:ZhpAyazIlyazTqZwSzqxLGD7iqD3QD5HZVkqi1i5CpUIkVj:hZMazuu9yD2qD3QD5rLbQsB

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
696	tibeFholkRBrr1H.exe
980	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"	2024-04-29_efe7969d21c8557c72e22560e43d1e80_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	2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1776	2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe
Token: SeDebugPrivilege	980	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 696	1776	2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe	84
PID 1776 wrote to memory of 696	1776	2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe	84
PID 1776 wrote to memory of 980	1776	2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe	86
PID 1776 wrote to memory of 980	1776	2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe	86
PID 1776 wrote to memory of 980	1776	2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_efe7969d21c8557c72e22560e43d1e80_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Users\Admin\AppData\Local\Temp\tibeFholkRBrr1H.exe
  C:\Users\Admin\AppData\Local\Temp\tibeFholkRBrr1H.exe
  2⤵
  - Executes dropped EXE
  PID:696
- 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:980

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
392KB

MD5
b2fa8de3cbd8e3b44e4314813f22c60d

SHA1
f3eada96a5250aa82725c1e1a8c4adc20e3073a7

SHA256
c81021927c6a9ea6bf81ad2ffdc330606ee489660aa434a92b7e951442d20841

SHA512
1ff34e56b956b16db1b032797283ae67dfa0e7022c0085ab5f3cce263a4cb06cc6f5b649277535f85e205985851721019235a4f9461043dd24e9517ddc16976e

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C:\Users\Admin\AppData\Local\Temp\tibeFholkRBrr1H.exe

Filesize
172KB

MD5
6286b27e7de2a99bcb683eb293a9dbd7

SHA1
1feea70b871bb4238446f919c6dd67c13a57e1d7

SHA256
5fc373c121f7ba510fbd0cbe39777bea1c4346207aecbc990f7eb7ccf9ce964e

SHA512
472b56d9a5ecce99de6ffd3871879ac60df1f783fc957a4b77ff85e690b056dc5fec6b37e2778d97b3696d9fcf32374657f05ff64eefe18b7d5e6fce533e1c8f

Download Submit
C:\Users\Admin\AppData\Local\Temp\tibeFholkRBrr1H.exe

Filesize
100KB

MD5
db697c943fcb215f757f9c22c907c568

SHA1
c57d891472f5ede8b1ee5d9bd6f5ad8fc8e9e5d7

SHA256
07c96337729e3c4c986e8f5660a97cb475c4c04842606be2654b37892af57de9

SHA512
bfa5c34d8c78015ccf96a2ef1c6d8f82157eb88680139bdbb51c55e3cd2a7c41bf364a364fd62b180b202cdf4f3d7d31c3710b8709c1d25a639bb00dfc97b646

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads