cuba | c5741701b3866459dd1ffa2477cfd8776713612912693a5897f78aac795d23e9

max time kernel
298s
max time network
131s
platform
windows11-21h2_x64
resource
win11-20251015-en
resource tags

arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
submitted
30/11/2025, 12:12

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
RansomwareSamples/Cuba_08_03_2021_1130KB.exe
Size 1.1MB
Sample251130-pc6htsvpft
SHA256 271ef3c1d022829f0b15f2471d05a28d4786abafd0a9e1e742bde3f6b36872ad
MD5 a12e733ddbe6f404b27474fa0e5de61d
SHA1 e8d0c95621a19131ef9480e58a8d6dd3d15c9acd
SHA512 f27605a283e958690eb7ad50aa46110b6d155217ad09d658ad3f9c4368d4c66ab623a0cc3489d695a02db462fec3bcf8ebee13f9da1bd61e2e3db46de2d73ddf
SSDEEP 12288:xtwee4XgIijsCMtcTCWVRapiyC9vwic8CPK3EOnA+u+:8efgIiICMtIChp8N2K3EOAK
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery cuba ransomware

Malware Config

Extracted

Path

C:\Program Files\Common Files\microsoft shared\ink\ar-SA\!!FAQ for Decryption!!.txt

Ransom Note

Good day. All your files are encrypted. For decryption contact us. Write here [email protected] We also inform that your databases, ftp server and file server were downloaded by us to our servers. * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss.

Emails

[email protected]

Signatures

Cuba family
cuba
Cuba, COLDDRAW
Cuba aka COLDDRAW is a ransomware first seen in 2019.
ransomware cuba
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Cuba_08_03_2021_1130KB.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe
4492	Cuba_08_03_2021_1130KB.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4492 wrote to memory of 3460	4492	Cuba_08_03_2021_1130KB.exe	78
PID 4492 wrote to memory of 3460	4492	Cuba_08_03_2021_1130KB.exe	78
PID 4492 wrote to memory of 3460	4492	Cuba_08_03_2021_1130KB.exe	78

C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\Cuba_08_03_2021_1130KB.exe
"C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\Cuba_08_03_2021_1130KB.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Windows\SysWOW64\cmd.exe
  /c del C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\Cuba_08_03_2021_1130KB.exe >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3460

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

T1217

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

stable.identity_helper.exe.manifest

Path C:\Program Files (x86)\Microsoft\EdgeCore\133.0.3065.69\identity_proxy\stable.identity_helper.exe.manifest
Size 2KB
SHA256 ea78a2f296f26a97b451950884f0ccda05ad0ca2cdc0e859bf132cbe801393ad
MD5 75fe861f5b7a65a8a2d35789b5963c88
SHA1 f6cfb04805f90c748ef234b4fdb721e641da5d67
SHA512 3455d9ba3594240333af93eacb3007f3e27f9527d689da4b6193be4a2c6af2fdf3451c5973324d804334d47fd569a4ae0c7beed8e4582c548939ed7de4176b84
MD5 SHA1 SHA512

Submit Download

!!FAQ for Decryption!!.txt

Path C:\Program Files\Common Files\microsoft shared\ink\ar-SA\!!FAQ for Decryption!!.txt
Size 346B
SHA256 9aaf714f40a29e0b10c038a79e26a95a934b7eeec3512a970d8c80f8a6daebd5
MD5 69acb73a5829bdddc9a7cf322178c70f
SHA1 3cd71f6cc40c90322e027712403899db2976218b
SHA512 380b506e330f4592cceee56334131cf6493bd989464afc5503bbd6bec0b9073475cfabbd8f37e471cac9f67fbfe07e747660ff6b9f5e0d9d14761e80ead6c57e
MD5 SHA1 SHA512

Submit Download

memory/4492-0-0x0000000002360000-0x00000000023C0000-memory.dmp

Download

memory/4492-7388-0x0000000000400000-0x000000000051D000-memory.dmp

Download

memory/4492-14551-0x0000000000400000-0x000000000051D000-memory.dmp

Download