djvu | c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17

General

Target

c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
Size

809KB
MD5

ba174a7c712cf99394b6b0f5ce052bfc
SHA1

ba4bc1d1efa3249ebe74f81b41bb3eaa5022bc7f
SHA256

c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17
SHA512

77e9b7709b13d55016a22d110ad020ccf742f4d54deee7becd5801cf343ef9c0ae1446b8ccc5f9b48bb3526253cdc193a5849357d6cfe934a91691a906acc9bc
SSDEEP

12288:bKi/g4BY7s/SQsVSkMa5bKGNG1KWNSnC1a1VmGihQWcdmKJrMKY2bVi:GmebbaKwSnCEZihxMmYrMKYsV

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.uajs
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0859PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/3016-2-0x0000000004AD0000-0x0000000004BEB000-memory.dmp	family_djvu
behavioral1/memory/1312-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1312-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1312-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1312-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1312-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2788-41-0x0000000000400000-0x0000000000537000-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4484	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-1-5-21-1132431369-515282257-1998160155-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cb71e1c9-e7e8-44df-bdfa-ac43573234dc\\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe\" --AutoStart"	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.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
7	api.2ip.ua
8	api.2ip.ua
22	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3016 set thread context of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 1496 set thread context of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95

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
1312	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
1312	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
2788	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
2788	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 3016 wrote to memory of 1312	3016	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	89
PID 1312 wrote to memory of 4484	1312	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	92
PID 1312 wrote to memory of 4484	1312	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	92
PID 1312 wrote to memory of 4484	1312	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	92
PID 1312 wrote to memory of 1496	1312	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	93
PID 1312 wrote to memory of 1496	1312	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	93
PID 1312 wrote to memory of 1496	1312	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	93
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95
PID 1496 wrote to memory of 2788	1496	c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe	95

C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
"C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
  "C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1312
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\cb71e1c9-e7e8-44df-bdfa-ac43573234dc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4484
- - C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
    "C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1496
  - - C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe
      "C:\Users\Admin\AppData\Local\Temp\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2788

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
77ee8e04347054f167cc7ec40d57354d

SHA1
4a446de1091ae5e12e09c63b35e70b0a2b8948ec

SHA256
b1c8a7c134fa736577b3841065a56a56827381b44f95b1664da5a6e7ef6ddb3f

SHA512
905e6f0e8cbb9b04b1c00f1c61a283ef5f01f5afa1cf6b23e94b74f51df641b1e464ed30560a172dfe2d99ba09318b440304f99160f5d328359243266f0a37de

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
be2dc9a9f9d222d1e53160998e8fb2d6

SHA1
b50802e92dfa3affed73fa09c3fc4d03c45835e5

SHA256
6af0233d0c58cee8e7d5f91614be628bd2b1741fd1055c7307182d2c26afd770

SHA512
e033384ac31d61e73b05c7d331f17e243577b1eade1a18b58e85d11d662cb8113e65593899d29fef7e97683f01a63e5e33ba1d53cc369dca4fe1907e08064f21

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

Filesize
392B

MD5
e316996048c6ea1b0044cb0967ec22d1

SHA1
9d5932f82c064ab68bb4e233ffccbca402d8ebe1

SHA256
202f85e4e4427bbb5af6fa52d92c544b335134d9a0f1b484c9dae4d80a54af15

SHA512
5ea5579dc82ce8eaa3c6e6c569d0be6e4d9300ccdc83bec4db208d1ce2341c0da60dd03125dbdfa901cff6bc68df278529e2ed9e503f42d57a76afd40484b4a4

Download Submit
C:\Users\Admin\AppData\Local\cb71e1c9-e7e8-44df-bdfa-ac43573234dc\c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17.exe

Filesize
809KB

MD5
ba174a7c712cf99394b6b0f5ce052bfc

SHA1
ba4bc1d1efa3249ebe74f81b41bb3eaa5022bc7f

SHA256
c2ef4b967ea7be10d5326bec932cfa3b35845d2c726de49b549fe1e12f692c17

SHA512
77e9b7709b13d55016a22d110ad020ccf742f4d54deee7becd5801cf343ef9c0ae1446b8ccc5f9b48bb3526253cdc193a5849357d6cfe934a91691a906acc9bc

Download Submit
memory/1312-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1312-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1312-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1312-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1312-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1496-21-0x0000000004A20000-0x0000000004ABD000-memory.dmp

Filesize
628KB

Download
memory/2788-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3016-1-0x0000000004A30000-0x0000000004ACD000-memory.dmp

Filesize
628KB

Download
memory/3016-2-0x0000000004AD0000-0x0000000004BEB000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads