djvu | 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651

Analysis

max time kernel
149s
max time network
158s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
16/04/2024, 02:25

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
Size 851KB
Sample240416-cwgycsfb92
SHA256 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651
MD5 6067c1f7658f5862dcce964ae8a9b049
SHA1 de1c58620017ed7f4c11b5cf00321aa203425b2f
SHA512 5c863b1977ac2e742638d96b9933222b475338b8f79501edd35fded93790ef4f8391896d70f1aa3197a317a3821c06f654af05804e01f23d47c1208a873cf138
SSDEEP 12288:QEO9cG9msbbKVTvHio+ZnIaXNqft+O6j22gfphHTAg1ZEJIrV5tg:nO9esSTknl9qf4i2gnzAb2V5tg
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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/1032-2-0x0000000004CC0000-0x0000000004DDB000-memory.dmp	family_djvu
behavioral2/memory/940-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/940-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/940-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/940-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/940-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-39-0x0000000000400000-0x0000000000537000-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
3168	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-1-5-21-243033537-3771492294-1461557691-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0f63bfa3-f7b3-48cd-9836-665c8b5b173a\\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe\" --AutoStart"	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.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 1032 set thread context of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 4704 set thread context of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.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
940	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
940	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
2304	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
2304	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 1032 wrote to memory of 940	1032	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	81
PID 940 wrote to memory of 3168	940	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	82
PID 940 wrote to memory of 3168	940	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	82
PID 940 wrote to memory of 3168	940	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	82
PID 940 wrote to memory of 4704	940	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	83
PID 940 wrote to memory of 4704	940	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	83
PID 940 wrote to memory of 4704	940	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	83
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86
PID 4704 wrote to memory of 2304	4704	9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe	86

C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
"C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
  "C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:940
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0f63bfa3-f7b3-48cd-9836-665c8b5b173a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3168
- - C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
    "C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4704
  - - C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
      "C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 54a3267f8825a4819df16f5448a9829081f9030088a02fa981222b43ec0fb392
MD5 a796999c503d181cf67725ed32be3bfe
SHA1 61bed07e1ca6dd7325b65653307671f95cd943bc
SHA512 5856964f0d0b6624577ce69751eab308994ef106eaf1de54fa4544caf362f4fbb94f99ceb4f9865746d01a9edce3dcdd685ad3767d761bdbf591ab20ec88081e
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 82aa3bd0e46e145590efbdc5916c42c0492f18022b71cba1c3d0470445619168
MD5 dd5f4bac57a7606f516313488ecef873
SHA1 6b7851751edb738632d7eb5aaf6c7f909205da4b
SHA512 3e8d9f1f1d076c596cea8bc750c031a976d059cb007f81075b07ec8ec9c1560d6b8d1148be6638a367c720e537b175fdee481cc71502f3d6f4832ef6f6bc714d
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 be70ea33e19cdc215c2a02246aecea11251de83bb8b6e4d04eeac211b6c40840
MD5 a30642c639ac8507ccadc9c528d21cf3
SHA1 a1769303d52b21f6dd6eaec90438814fa9fb3d40
SHA512 d010fc0c07dd1395bc39fbd2cb965223bd062555e9bb6d864ae7b99db593205815dfcad85093da3cd335153a52cabf113aa525b418b54a8fbb380aaf6f14b1f8
MD5 SHA1 SHA512

Submit Download

9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe

Path C:\Users\Admin\AppData\Local\0f63bfa3-f7b3-48cd-9836-665c8b5b173a\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
Size 851KB
SHA256 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651
MD5 6067c1f7658f5862dcce964ae8a9b049
SHA1 de1c58620017ed7f4c11b5cf00321aa203425b2f
SHA512 5c863b1977ac2e742638d96b9933222b475338b8f79501edd35fded93790ef4f8391896d70f1aa3197a317a3821c06f654af05804e01f23d47c1208a873cf138
SSDEEP 12288:QEO9cG9msbbKVTvHio+ZnIaXNqft+O6j22gfphHTAg1ZEJIrV5tg:nO9esSTknl9qf4i2gnzAb2V5tg
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/940-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/940-17-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/940-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/940-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/940-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1032-1-0x0000000004C20000-0x0000000004CBD000-memory.dmp

Download

memory/1032-2-0x0000000004CC0000-0x0000000004DDB000-memory.dmp

Download

memory/2304-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-24-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-23-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-30-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-31-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-34-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-37-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-38-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2304-39-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4704-21-0x0000000004AE0000-0x0000000004B74000-memory.dmp

Download