djvu | 0cdfc63a360d47d96ec2095110f30634258337fc33441dada8d91432fecf3f33

Reason

Machine shutdown: "{\"level\":\"info\",\"time\":\"2024-04-25T16:23:25Z\",\"message\":\"Dirty snapshot: /var/lib/sandbox/hatchvm/win10v2004-20240412-en/instance_5-dirty.qcow2\"}"

General

Target

Stop.exe
Size

780KB
MD5

f4c37292b365c19e6d2feeb6a17c4049
SHA1

a7c201719a6c4e58f57baa2a88b110d72f3daefe
SHA256

444cf71032e7c7be2a79255af4fb38bab0333fb0a060ecc3fe91473d26ebce83
SHA512

8436f1f96c2ea3487e1205d2f0dbf8db33fc622a9d863f39402802a8c16bb05897477ba58d57fcb7d7a6bb265c52a25331ac5505dd3ac2c6b3fc2823eb56f805
SSDEEP

12288:6DcWGLixjy0li5QMCgpMeahQ+siBwpBezGbkhvYesVmKiOAfc4Cz9fA1iqCD:6iily4i3CgeSKBtXKiMt9fa8D

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.com/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4108-2-0x0000000004740000-0x000000000485B000-memory.dmp	family_djvu
behavioral1/memory/4888-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4888-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4888-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4888-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4888-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2796-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

Stop.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation Stop.exe
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4520 icacls.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	Stop.exe

pid	process
4520	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Stop.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4550c99b-5c7a-4160-9e5c-b96db9e09e23\\Stop.exe\" --AutoStart"	Stop.exe

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

10 api.2ip.ua
12 api.2ip.ua
28 api.2ip.ua
Suspicious use of SetThreadContext 2 IoCs

Processes:

Stop.exeStop.exe

description pid process target process

PID 4108 set thread context of 4888 4108 Stop.exe Stop.exe
PID 2844 set thread context of 2796 2844 Stop.exe Stop.exe
Drops file in Windows directory 1 IoCs

Processes:

LogonUI.exe

description ioc process

File created C:\Windows\rescache\_merged\2229298842\1965624410.pri LogonUI.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
10	api.2ip.ua
12	api.2ip.ua
28	api.2ip.ua

description	pid	process	target process
PID 4108 set thread context of 4888	4108	Stop.exe	Stop.exe
PID 2844 set thread context of 2796	2844	Stop.exe	Stop.exe

description	ioc	process
File created	C:\Windows\rescache\_merged\2229298842\1965624410.pri	LogonUI.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "17"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Stop.exeStop.exe

pid process

4888 Stop.exe
4888 Stop.exe
2796 Stop.exe
2796 Stop.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

LogonUI.exe

pid process

3568 LogonUI.exe
3568 LogonUI.exe

pid	process
4888	Stop.exe
4888	Stop.exe
2796	Stop.exe
2796	Stop.exe

pid	process
3568	LogonUI.exe
3568	LogonUI.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

Stop.exeStop.exeStop.exe

description	pid	process	target process
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4108 wrote to memory of 4888	4108	Stop.exe	Stop.exe
PID 4888 wrote to memory of 4520	4888	Stop.exe	icacls.exe
PID 4888 wrote to memory of 4520	4888	Stop.exe	icacls.exe
PID 4888 wrote to memory of 4520	4888	Stop.exe	icacls.exe
PID 4888 wrote to memory of 2844	4888	Stop.exe	Stop.exe
PID 4888 wrote to memory of 2844	4888	Stop.exe	Stop.exe
PID 4888 wrote to memory of 2844	4888	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe
PID 2844 wrote to memory of 2796	2844	Stop.exe	Stop.exe

C:\Users\Admin\AppData\Local\Temp\Stop.exe
"C:\Users\Admin\AppData\Local\Temp\Stop.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4108

C:\Users\Admin\AppData\Local\Temp\Stop.exe
"C:\Users\Admin\AppData\Local\Temp\Stop.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4888

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4550c99b-5c7a-4160-9e5c-b96db9e09e23" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4520

C:\Users\Admin\AppData\Local\Temp\Stop.exe
"C:\Users\Admin\AppData\Local\Temp\Stop.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2844

C:\Users\Admin\AppData\Local\Temp\Stop.exe
"C:\Users\Admin\AppData\Local\Temp\Stop.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2796

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3912855 /state1:0x41c64e6d
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
132a59b12289f608ea38eb370d498a8f

SHA1
0fd8a23d395d38719cb0b71ee10df56ce35a6c4c

SHA256
d6fcf2cd41b542b6d7ee6daa10cf080f4b6220cbce855be03d689d1ad080ed9b

SHA512
ea953e93faf4c78e1b9e3768a463f6b46548af00b430ebd275054f7da1e1f4c40746bd3ff4ca02c0fd107bf78b02b67069075939b719c00a7e4bc2f4ecb46da1

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
410B

MD5
f82dc733ed8b29a04871e6443d2ef5a5

SHA1
46ef37a0b4c83ac811e6b73799d23c97fdd4e193

SHA256
d7ea1525a3af5dd4deb40e0007e829c793962dc2e977c9f05c00e4afb1393454

SHA512
53fe4a80f7221f848a4d310462464215ce916c0cad7993b43e2aca6b92efb9cc46e616eeb46aa5bdfa5784f22268aeaf550ffb387cd774f2aedb40718f8ad309

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
077da905f7a2140091759e1fc3991cae

SHA1
4e2fb23d9c47c17cc903585b5c7f54e06c2db86d

SHA256
5d1df9af2710d8953078969c1e4dcd9a4b1af905e03a90eb563859b25a95fd09

SHA512
7e011ef41cec0037b1218e00574a50ba3ea8c20e07a8fd0c8d2dc8b42bb016f52986a0fd8ad8ded107366ab592b28a6a2422ecee8ff5e1aa89842cedc1d738d8

Download Submit
C:\Users\Admin\AppData\Local\4550c99b-5c7a-4160-9e5c-b96db9e09e23\Stop.exe
Filesize
780KB

MD5
f4c37292b365c19e6d2feeb6a17c4049

SHA1
a7c201719a6c4e58f57baa2a88b110d72f3daefe

SHA256
444cf71032e7c7be2a79255af4fb38bab0333fb0a060ecc3fe91473d26ebce83

SHA512
8436f1f96c2ea3487e1205d2f0dbf8db33fc622a9d863f39402802a8c16bb05897477ba58d57fcb7d7a6bb265c52a25331ac5505dd3ac2c6b3fc2823eb56f805

Download Submit
memory/2796-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2844-18-0x00000000044A0000-0x0000000004533000-memory.dmp

Filesize
588KB

Download
memory/4108-1-0x00000000046A0000-0x0000000004732000-memory.dmp

Filesize
584KB

Download
memory/4108-2-0x0000000004740000-0x000000000485B000-memory.dmp

Filesize
1.1MB

Download
memory/4888-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads