djvu | 13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc

General

Target

13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
Size

733KB
MD5

04309713728b62d94c2ca28538a7eb4b
SHA1

ceb68284a8108519e35fd199e31b3bc6c5963f2a
SHA256

13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc
SHA512

5ea614ae0802c0b270091c674b69eade27f82036c5cf941d4b31b4a39181bb75eeca4a1534252d0be3285f6a323113d437c7e4b126f3a5861a04cda553c45915
SSDEEP

12288:hgVmCOp15uzBMXjCJpKy4t0EArfGiyXLvyA8hxEomz2+IGsZrkhOihCQgO0dDq:hh35nmWhA6iuLYOom/ZokhOihklq

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
behavioral2/memory/3916-2-0x00000000027E0000-0x00000000028FB000-memory.dmp	family_djvu
behavioral2/memory/4640-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4640-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4640-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4640-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4640-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3184	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-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7f9d7648-8121-439c-bb84-3934d0464f9c\\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe\" --AutoStart"	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.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
1	api.2ip.ua
2	api.2ip.ua
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3916 set thread context of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 4420 set thread context of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82

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
4640	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
4640	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
796	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
796	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 3916 wrote to memory of 4640	3916	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	77
PID 4640 wrote to memory of 3184	4640	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	78
PID 4640 wrote to memory of 3184	4640	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	78
PID 4640 wrote to memory of 3184	4640	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	78
PID 4640 wrote to memory of 4420	4640	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	79
PID 4640 wrote to memory of 4420	4640	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	79
PID 4640 wrote to memory of 4420	4640	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	79
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82
PID 4420 wrote to memory of 796	4420	13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe	82

C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
"C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
  "C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4640
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7f9d7648-8121-439c-bb84-3934d0464f9c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3184
- - C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
    "C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4420
  - - C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe
      "C:\Users\Admin\AppData\Local\Temp\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:796

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

System Information Discovery

1

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
f827bcc547aecf3d7bf08ac646ccce9c

SHA1
67c2d7717e4e91e2cadb33540697356f37db3ade

SHA256
21fb8da4c663f8593d2db6983b90a2f2317b84e8429cae17f9ee1da8549c4c96

SHA512
8a04ea4d9df7c0a04cfc75ebbf4c210c57801ffe9af9eb53bb0d58f623cac880ccc80a037f5aeeb400ab3b2e330e62513fb420ae2c6ff15f5c1c9777f0a19b59

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
61ea60e59a08c9c28b7dcb534164f323

SHA1
e10d9d02733aceca2671805abdd0ddb7761e8001

SHA256
2fed9dfe319a87eed95fb5ae96f1196a93ccd346bd2fd7e79579fec5403cf511

SHA512
2eb6a6e4c05d86f1168c4b026d4f05b9c3315c141243d476c90546e2c9494d1c57cd8ba2d8f17ff1df19aa76f38fe647db4762a006e01d3c651f720689fc251d

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

Filesize
392B

MD5
dad3cd918337d9575ed45032604fee55

SHA1
268f28efc7461dd70d0bb06db77bc232dad6f3b1

SHA256
b80e2523daa4deff6770950315922eeb95936ecc2f5664432e259ff4b0967320

SHA512
4838ab5ad822347a0e2dc922382e9d8fd6fc9eefba1a28b13e3c43394c9eef232422d2efc3ab8b66f13e21d08a19767dd45cdb17e45e3d52587f25b35d5ebc0a

Download Submit
C:\Users\Admin\AppData\Local\7f9d7648-8121-439c-bb84-3934d0464f9c\13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc.exe

Filesize
733KB

MD5
04309713728b62d94c2ca28538a7eb4b

SHA1
ceb68284a8108519e35fd199e31b3bc6c5963f2a

SHA256
13e0f976dc79b3b7eae5d2299eeb1829ac1d9a09236f80ff69e9065677e0f8fc

SHA512
5ea614ae0802c0b270091c674b69eade27f82036c5cf941d4b31b4a39181bb75eeca4a1534252d0be3285f6a323113d437c7e4b126f3a5861a04cda553c45915

Download Submit
memory/796-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3916-2-0x00000000027E0000-0x00000000028FB000-memory.dmp

Filesize
1.1MB

Download
memory/3916-1-0x0000000002720000-0x00000000027B5000-memory.dmp

Filesize
596KB

Download
memory/4420-20-0x00000000024D0000-0x000000000256C000-memory.dmp

Filesize
624KB

Download
memory/4640-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4640-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4640-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4640-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4640-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads