djvu | 74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb

General

Target

74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe
Size

805KB
MD5

7df3296629aa467a3f13dc542e7a6b5e
SHA1

461643cfe9b216c4c531cd591f871576cd26f5e9
SHA256

74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb
SHA512

3e4eb1d1c147cb023551a9216d78e6162b96f1c6b4f1f1f2f3e783415168dad4c77e802d317406c01088061ad1bbc4b89ea8b6fe596bb654232d2b1be7862d3d
SSDEEP

12288:xnGFN6a8E1BP3VlcprK/iajnfc7asSkTpflU78t7ZOV1WBM:xJ8fVlcpG/Xzc7b7Lt70oM

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/4688-2-0x0000000004BD0000-0x0000000004CEB000-memory.dmp	family_djvu
behavioral1/memory/3324-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3324-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3324-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3324-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3324-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3404-37-0x0000000000400000-0x0000000000537000-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3612	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-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\dd58d619-a557-423e-b06a-7f6becadaf32\\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe\" --AutoStart"	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.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
26	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4688 set thread context of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 1904 set thread context of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94

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
3324	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe
3324	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe
3404	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe
3404	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 4688 wrote to memory of 3324	4688	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	89
PID 3324 wrote to memory of 3612	3324	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	90
PID 3324 wrote to memory of 3612	3324	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	90
PID 3324 wrote to memory of 3612	3324	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	90
PID 3324 wrote to memory of 1904	3324	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	91
PID 3324 wrote to memory of 1904	3324	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	91
PID 3324 wrote to memory of 1904	3324	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	91
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94
PID 1904 wrote to memory of 3404	1904	74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe	94

C:\Users\Admin\AppData\Local\Temp\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe
"C:\Users\Admin\AppData\Local\Temp\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4688
- C:\Users\Admin\AppData\Local\Temp\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe
  "C:\Users\Admin\AppData\Local\Temp\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3324
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\dd58d619-a557-423e-b06a-7f6becadaf32" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3612
- - C:\Users\Admin\AppData\Local\Temp\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe
    "C:\Users\Admin\AppData\Local\Temp\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1904
  - - C:\Users\Admin\AppData\Local\Temp\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe
      "C:\Users\Admin\AppData\Local\Temp\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3404

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
84cc91708c444c30647ef07922bac2f1

SHA1
97fec2794e5f14b4a9e54366d723d781161d7fb9

SHA256
3e95b831913d3d7205a09c98cc185943fd810f6e2582607a54fa1e9cc30731aa

SHA512
cc75685d2259bd362c076ce4941e9ce19d129801a9337e5d44f91de332d67f64f921d1a5870bf9ab5375ad2bc95a98398d7de91a8b72887767532e5933b3a175

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
210c1da3f1745dd914c5e41edb52133e

SHA1
aad981f7445cf0c9158ea0fc36a0056b34919e62

SHA256
aa909caf49c8c49621e4503981013b6f3e675c0d0b3601b32a8c78de34e342fa

SHA512
5d2e913ce316b92c291f469097db12c623b775959aef8fb12b533f26f0a985a8cc422a08262d4632e95b5709ccaeb5985d851756ef65446c7cb41097096d4fcc

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

Filesize
392B

MD5
1e1ef9cba4e42420d0c3720033d6540e

SHA1
10253b30bf845b2bed66581559e408cd47d07e71

SHA256
2d997fcf6bc19707bfc50cc59b0a3d23bff1616270bca67ee83298ef1f038119

SHA512
1c750594750088224f15066482bdc53f668035d8e6919c540060cbb3aa5fedc586d75f4f294e277cf0ec7cb4610adde94cdf91dc10f8f347cd6e700d2461fd91

Download Submit
C:\Users\Admin\AppData\Local\dd58d619-a557-423e-b06a-7f6becadaf32\74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb.exe

Filesize
805KB

MD5
7df3296629aa467a3f13dc542e7a6b5e

SHA1
461643cfe9b216c4c531cd591f871576cd26f5e9

SHA256
74f1577d80c40c35e0f7bb6ca1f376b40506228d7bbb73f397c4962ec23f9bcb

SHA512
3e4eb1d1c147cb023551a9216d78e6162b96f1c6b4f1f1f2f3e783415168dad4c77e802d317406c01088061ad1bbc4b89ea8b6fe596bb654232d2b1be7862d3d

Download Submit
memory/1904-19-0x0000000004A20000-0x0000000004AC1000-memory.dmp

Filesize
644KB

Download
memory/3324-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3324-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3324-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3324-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3324-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3404-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4688-1-0x0000000004B30000-0x0000000004BCF000-memory.dmp

Filesize
636KB

Download
memory/4688-2-0x0000000004BD0000-0x0000000004CEB000-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