djvu | 144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6

General

Target

144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe
Size

842KB
MD5

b7c2b12631e997b20e7cc5152e38f858
SHA1

77d953531bb52218702ae9bcfadad06391b47eda
SHA256

144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6
SHA512

20dce2dcd0db0974f55bff4e8e09db99c38f9b864f2592aa4c8dfb8ddede0c3797aed11fd6c47ed1b6a755243a9db53206112bb997a2bfffb11fd2bc33e8f411
SSDEEP

12288:WDro5XqUvQ3r7+RhC6+gO6WIMSSg/Tad+qQ9nSHTtnPAnNM:WDLUo3n+Rc6+gHWtSDn6TtPuM

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/3816-2-0x0000000004CE0000-0x0000000004DFB000-memory.dmp	family_djvu
behavioral2/memory/3948-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3948-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3948-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3948-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3948-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4852-39-0x0000000000400000-0x0000000000537000-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
3676	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-1-5-21-801765966-3955847401-2235691403-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\12e74ce9-3bc4-4702-9b5a-1fdf7f0247bb\\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe\" --AutoStart"	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.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
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3816 set thread context of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 4412 set thread context of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86

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
3948	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe
3948	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe
4852	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe
4852	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3816 wrote to memory of 3948	3816	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	80
PID 3948 wrote to memory of 3676	3948	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	82
PID 3948 wrote to memory of 3676	3948	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	82
PID 3948 wrote to memory of 3676	3948	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	82
PID 3948 wrote to memory of 4412	3948	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	83
PID 3948 wrote to memory of 4412	3948	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	83
PID 3948 wrote to memory of 4412	3948	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	83
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86
PID 4412 wrote to memory of 4852	4412	144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe	86

C:\Users\Admin\AppData\Local\Temp\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe
"C:\Users\Admin\AppData\Local\Temp\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3816
- C:\Users\Admin\AppData\Local\Temp\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe
  "C:\Users\Admin\AppData\Local\Temp\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3948
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\12e74ce9-3bc4-4702-9b5a-1fdf7f0247bb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3676
- - C:\Users\Admin\AppData\Local\Temp\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe
    "C:\Users\Admin\AppData\Local\Temp\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4412
  - - C:\Users\Admin\AppData\Local\Temp\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe
      "C:\Users\Admin\AppData\Local\Temp\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4852

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
d1dd7a00ce73518932c811f701be1f45

SHA1
6ed624589a811394e17535336ff8fea311ce10cf

SHA256
8e9e392dc9b61b203b94259919869e3384fe634a6c76da3b817ecb1e5566c669

SHA512
885e1bdea6ac9f0823c13a7c5e0a5fca1e3b51d1fbdb049ca74e900ebb73ed536554db013055eb9404bc769b1b26bc14c4e96080c2fe588b234d3aab86547ea7

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
89aa764117db6fdb064b23b06d6fe540

SHA1
889c3b7295279cacb96f92ff563eb2bb4ebe388d

SHA256
fa0b3bfac509d512639af943adb4a1a5d4e9282b70ce9e766c081ad4770e0f4d

SHA512
48ffb194af3560e7e2274c711930b79573519968f77b26e65cdaa1c4b3f3e7f229505d4bbeaa50e7b8b26389361f6ab8ebc15d2dd167c15a50eeae4aaf73a749

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

Filesize
392B

MD5
1ad09714887e5dbb04532a5d8b1816fc

SHA1
20f0e2c4b3a09c89389c9be93e7e6b826c6045e3

SHA256
37d1cb8bb474783084d24d59ad154cdad70b9c79cb41ca7d6e24362f01c495c3

SHA512
fa47c062e28cc82649df38c50bd1b5842b43b3398ab9c5055add4e3d1b6673823685693887d0d9710ee847fc951aa181686a7ac23123f70546c6fc276c98fcc7

Download Submit
C:\Users\Admin\AppData\Local\12e74ce9-3bc4-4702-9b5a-1fdf7f0247bb\144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6.exe

Filesize
842KB

MD5
b7c2b12631e997b20e7cc5152e38f858

SHA1
77d953531bb52218702ae9bcfadad06391b47eda

SHA256
144ce39ce9196ef78e7311bf90c63041089fd1c098799a1c66af5a0ea96cdee6

SHA512
20dce2dcd0db0974f55bff4e8e09db99c38f9b864f2592aa4c8dfb8ddede0c3797aed11fd6c47ed1b6a755243a9db53206112bb997a2bfffb11fd2bc33e8f411

Download Submit
memory/3816-1-0x0000000004C40000-0x0000000004CDD000-memory.dmp

Filesize
628KB

Download
memory/3816-2-0x0000000004CE0000-0x0000000004DFB000-memory.dmp

Filesize
1.1MB

Download
memory/3948-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4412-20-0x0000000004B10000-0x0000000004BB0000-memory.dmp

Filesize
640KB

Download
memory/4852-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4852-39-0x0000000000400000-0x0000000000537000-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