djvu | 50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f

General

Target

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
Size

708KB
MD5

c991e828e97d9e583ff042e5891d9999
SHA1

12b6ab69ee99c0c5cb5b4f413f24e84d438b2d96
SHA256

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f
SHA512

f65fcd02981c1a4eea592486ccb6b592fe646dbac48b0104586bf06f96a65124916c9f456ac588411b2b9dc434ede958977cdf47550e957623a1e1c6960573fb
SSDEEP

12288:tnsGKEfpDplHlPCBMPmpE0NuaAidBVlB+Nze9qXX0S6CjXf23:tsxYpDp9ZCBMI/uaAOug9OfXf4

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

Processes:

resource	yara_rule
behavioral1/memory/332-2-0x0000000004140000-0x000000000425B000-memory.dmp	family_djvu
behavioral1/memory/4684-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4684-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4684-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4684-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4684-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4072-39-0x0000000000400000-0x0000000000537000-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:

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

532 icacls.exe

pid	process
532	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6ba91ea7-58ea-41c9-be78-b1f4d9dba4dc\\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe\" --AutoStart"	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.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

15 api.2ip.ua
3 api.2ip.ua
4 api.2ip.ua

flow	ioc
15	api.2ip.ua
3	api.2ip.ua
4	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

description	pid	process	target process
PID 332 set thread context of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 set thread context of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

pid	process
4684	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
4684	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
4072	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
4072	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
"C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:332

C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
"C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4684

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\6ba91ea7-58ea-41c9-be78-b1f4d9dba4dc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:532

C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
"C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2756

C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
"C:\Users\Admin\AppData\Local\Temp\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4072

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 --field-trial-handle=3684,i,14648456027158448592,4956305794400220180,262144 --variations-seed-version --mojo-platform-channel-handle=2700 /prefetch:8
1⤵
PID:1616

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

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Downloads

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

Filesize
1KB

MD5
df80f9ba75076db634761b6132e0d4e3

SHA1
07983946fb660752c7cccb2ef82d01ec4c9ecc5d

SHA256
d5ff96fd8b416de93a85783192206224cf8821c240cd8ff755f2e8270153dd99

SHA512
4ec734c5d29e9ce00b00e42b627253195e8c7a158433fedfcee428e692a6501981c33d7c8a39235f8b691f087145cdbe660b430493edbeedb12588c5cdd5a66a

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
6ce8381eb1e843d3d2f3b3ce7377e942

SHA1
b4c9927ed871982a89ea02fa8fc488a725dd7d15

SHA256
4788faafb0572200f76cd7f0ab2d9a5d0399bec76175e7ab87706abc7ec4427c

SHA512
0e6f2c75e961208125e52eddfae4c7fc437d93e97ebad4a26df6e8d68b91a9b665e8e9bf9ac310bf3e5109ae7cda8c80eceafb24837d4c68a4d292a06f2b2b62

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

Filesize
392B

MD5
9a456abe734c05b91618fbc0549db7fa

SHA1
55589e0b97797a5e62574a353171ed24c5c79fa4

SHA256
632a7b883f6762c4676db156dba5094f5e015c02c762149449ef65b7bca63178

SHA512
0acda2430468a19f6ab2fe402ca5344d57776532f0287355a16a8dede979dbf7c179a39cca725070780f83427bb5a2a79a974dfcb1e7de2dad96d2094a8debed

Download Submit
C:\Users\Admin\AppData\Local\6ba91ea7-58ea-41c9-be78-b1f4d9dba4dc\50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

Filesize
708KB

MD5
c991e828e97d9e583ff042e5891d9999

SHA1
12b6ab69ee99c0c5cb5b4f413f24e84d438b2d96

SHA256
50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f

SHA512
f65fcd02981c1a4eea592486ccb6b592fe646dbac48b0104586bf06f96a65124916c9f456ac588411b2b9dc434ede958977cdf47550e957623a1e1c6960573fb

Download Submit
memory/332-2-0x0000000004140000-0x000000000425B000-memory.dmp

Filesize
1.1MB

Download
memory/332-1-0x00000000024F0000-0x000000000258B000-memory.dmp

Filesize
620KB

Download
memory/4072-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4072-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4684-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4684-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4684-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4684-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4684-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 332 wrote to memory of 4684	332	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 4684 wrote to memory of 532	4684	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	icacls.exe
PID 4684 wrote to memory of 532	4684	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	icacls.exe
PID 4684 wrote to memory of 532	4684	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	icacls.exe
PID 4684 wrote to memory of 2756	4684	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 4684 wrote to memory of 2756	4684	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 4684 wrote to memory of 2756	4684	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe
PID 2756 wrote to memory of 4072	2756	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe	50e67518555f88edc46e95c81c38860c272f45483ccde420315e62827bf3527f.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads