560f61f91c2495de4b96db4ab88e7ee9f65e6ef85abcf556f481666fcd22b0d2

Analysis

max time kernel
139s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/05/2024, 07:42

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General

Target

2024-05-07_5deb2d615fc333ad24c4599b940e2bbf_bkransomware.exe
Size

205KB
MD5

5deb2d615fc333ad24c4599b940e2bbf
SHA1

ebbeae3d8d03b9b1e90a6ff5ab3228f99bfabea8
SHA256

560f61f91c2495de4b96db4ab88e7ee9f65e6ef85abcf556f481666fcd22b0d2
SHA512

5797582a0fb28c61bb3e426508e98959b72c2af73d53c1c8cf7fa0026bf69cb30b1e438ecf2242b263d6b8e0dd1d548d404c27ec2827808e15af11a49ba876a7
SSDEEP

3072:ZhpAyazIlyazTUzfhqu3q/vdqNyqDcWR5qnIBB8l7OUcUjjGoExmqbE:hZMazE5qMlNyY9kIBeJOWjj8vQ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3716	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"	2024-05-07_5deb2d615fc333ad24c4599b940e2bbf_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	2024-05-07_5deb2d615fc333ad24c4599b940e2bbf_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4444	2024-05-07_5deb2d615fc333ad24c4599b940e2bbf_bkransomware.exe
Token: SeDebugPrivilege	3716	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4444 wrote to memory of 3716	4444	2024-05-07_5deb2d615fc333ad24c4599b940e2bbf_bkransomware.exe	91
PID 4444 wrote to memory of 3716	4444	2024-05-07_5deb2d615fc333ad24c4599b940e2bbf_bkransomware.exe	91
PID 4444 wrote to memory of 3716	4444	2024-05-07_5deb2d615fc333ad24c4599b940e2bbf_bkransomware.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-07_5deb2d615fc333ad24c4599b940e2bbf_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-07_5deb2d615fc333ad24c4599b940e2bbf_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4444
- 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:3716

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=3956 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:1868

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
6b95d5b6a49b17eed1ff4141e2cf29dc

SHA1
eb5f068c7d90bd551f8a52112527fde2d5c6de76

SHA256
500b3c16eb01fd4888717dd7cafbe6c78dd85c20392998b2d62de6efc5ce7620

SHA512
e491465138cae091369cd7b79396e6ee781c9d445cc02e64cc9dfab42bd7062256f3cbc73894fa7051bf6998c4b942c65474906a763b3d65845f178fdf0d6e87

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C:\Users\Admin\AppData\Local\Temp\yVpS4CgTTlsowd6.exe

Filesize
205KB

MD5
8d8b34cc126efee0190e5e5e0f904672

SHA1
1c3f1b4b74b8ae3a820748c2aca6f705b8ba46dc

SHA256
c85bfcf2f49e1dd075962a4300c25c9c5cfb7c1b18fafbd37691c10d0cc99046

SHA512
92a33eaa1e31729152cbfb9688c3847884c9b72da4f66d60a8734028f65c8d4d0d9cadf315bb6dbaa9e5ee739239910943c5f0a1491ffd5a04bb4daaa18ee8e6

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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