9efedcd8d8d187b19d3464996e31a050dfcbcfafff835e498b1f7bbfe7f0521e

Analysis

max time kernel
144s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2024, 12:24

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General

Target

2024-04-25_d48ad4ba8140d59789dc5ce3f568f4e9_bkransomware.exe
Size

71KB
MD5

d48ad4ba8140d59789dc5ce3f568f4e9
SHA1

0b19c3ad481237691978fbc623d334e13461dd31
SHA256

9efedcd8d8d187b19d3464996e31a050dfcbcfafff835e498b1f7bbfe7f0521e
SHA512

422dff4f865489b174ce099ccb3d4a35e42b6ee3a667a81a6f00d393953fbbe7920c4a36991f2244d0da048eab34d510be08bb613e8b25f290c9da8f01bf7d4a
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTx:ZhpAyazIlyazTx

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3300	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"	2024-04-25_d48ad4ba8140d59789dc5ce3f568f4e9_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	2024-04-25_d48ad4ba8140d59789dc5ce3f568f4e9_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1308	2024-04-25_d48ad4ba8140d59789dc5ce3f568f4e9_bkransomware.exe
Token: SeDebugPrivilege	3300	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 3300	1308	2024-04-25_d48ad4ba8140d59789dc5ce3f568f4e9_bkransomware.exe	91
PID 1308 wrote to memory of 3300	1308	2024-04-25_d48ad4ba8140d59789dc5ce3f568f4e9_bkransomware.exe	91
PID 1308 wrote to memory of 3300	1308	2024-04-25_d48ad4ba8140d59789dc5ce3f568f4e9_bkransomware.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-25_d48ad4ba8140d59789dc5ce3f568f4e9_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_d48ad4ba8140d59789dc5ce3f568f4e9_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1308
- 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:3300

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3708 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:4388

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
789KB

MD5
4758a8d57ab7f4cd71ccf1e300a8197d

SHA1
6333bcb2ab80532f18b8cd1b973091bd6af0537b

SHA256
3b753784f60de11be6a7e2bc8b56ffbf46cc37bc0777088b3fdfe27a726300cf

SHA512
2421fcfb8ac630c76c12f7ff71e0d198647ab25c10890fa79558ba88baa46a8cc7b1411be486e99481adcceb89a19f9439042db321f8064dac0aa222f6615e83

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C:\Users\Admin\AppData\Local\Temp\R1nh6DPHBrPePtB.exe

Filesize
71KB

MD5
72254250a66a5b95028468b9f2fde670

SHA1
556535040af149ccbe2456f9dcfa30ff35305706

SHA256
d989544ae4ebf11202cf9d186ae3c0aaa1ee57bec604c28302c95213425f5a57

SHA512
48bb8f3867508a1b969818c8982d7d5d6cef670a205528ceef671c126a89ac12b7f611141f860af134502f6b340e3c2271a99b168fd284b5e21ea24ae5fcfa89

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