djvu | 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d

General

Target

519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
Size

711KB
MD5

07116bba4c9f651cf2c4327698483aa0
SHA1

02a9fc8459c6ad451ba571146d5211664b4276d3
SHA256

519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d
SHA512

d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2
SSDEEP

12288:o4Amb9t3hc0lMxKvp30GfaOztaHNdvPRROnLTfp1WPhbFXMNZMCHcBiFBcDW7X:o49bLLgQ50GfaOzCnvPRWLV8PRFXMPHj

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

resource	yara_rule
behavioral1/memory/2384-2-0x0000000004AF0000-0x0000000004C0B000-memory.dmp	family_djvu
behavioral1/memory/1376-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1376-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1376-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1376-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1376-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4028-37-0x0000000000400000-0x0000000000537000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
212	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f7da86e6-519b-4d60-a3df-3f74b07f2ce2\\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe\" --AutoStart"	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.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.

flow	ioc
8	api.2ip.ua
9	api.2ip.ua
23	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2384 set thread context of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2916 set thread context of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1376	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
1376	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
4028	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
4028	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 2384 wrote to memory of 1376	2384	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	92
PID 1376 wrote to memory of 212	1376	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	93
PID 1376 wrote to memory of 212	1376	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	93
PID 1376 wrote to memory of 212	1376	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	93
PID 1376 wrote to memory of 2916	1376	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	94
PID 1376 wrote to memory of 2916	1376	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	94
PID 1376 wrote to memory of 2916	1376	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	94
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96
PID 2916 wrote to memory of 4028	2916	519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe	96

C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
  "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1376
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f7da86e6-519b-4d60-a3df-3f74b07f2ce2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:212
- - C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
    "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2916
  - - C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
      "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4028

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=3980 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
1⤵
PID:3980

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

Loading Replay Monitor...

Downloads

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

Filesize
1KB

MD5
7575c39a544943a68ce6e709c586005a

SHA1
4874b30bd1d455b28a95c4e21c5aecd1ea043d7a

SHA256
4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8

SHA512
abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1

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
c07224372d5aba7060427b1689173574

SHA1
aa502aee050dee951b127975dc9774e2531de630

SHA256
17ba0e1ec77a75ee24f256a442652a53567e088958eadc0559ad37a8b98dde88

SHA512
def024f99fb0affef3a64fb16302a5030b6e3e8e37b94c230167a5db24ce3d99ad7b148b2d3f7ee322b16456dec58666652fbbdb5f42f3b0375a5b00a80036fb

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

Filesize
392B

MD5
c96dd04ad0289c8f45a134b590bd4242

SHA1
ff0455e334b000fbd24c5310a46e2dd5e448c7bc

SHA256
a3de73f6f4ce1df8bbce835f15c36324dc4dc2c7a4a89e6a444edc4d094092f1

SHA512
e5d3abd758f8bd3ec0b4f938b7c1c9f5c23a3628dbd2340d0bd6dea12851839df032bc6ec252248d5d232f94042d1e5afa62c41aafb1a22e4bfc9f46c6a52439

Download Submit
C:\Users\Admin\AppData\Local\f7da86e6-519b-4d60-a3df-3f74b07f2ce2\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe

Filesize
711KB

MD5
07116bba4c9f651cf2c4327698483aa0

SHA1
02a9fc8459c6ad451ba571146d5211664b4276d3

SHA256
519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d

SHA512
d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2

Download Submit
memory/1376-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1376-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1376-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1376-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1376-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2384-1-0x0000000004A50000-0x0000000004AEB000-memory.dmp

Filesize
620KB

Download
memory/2384-2-0x0000000004AF0000-0x0000000004C0B000-memory.dmp

Filesize
1.1MB

Download
memory/4028-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4028-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads