djvu | 706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1

General

Target

706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe
Size

810KB
MD5

97e5630fb3c890dbd33612ecbb882ca9
SHA1

aaef0e699015b543e58bbb2d132136699fa4a457
SHA256

706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1
SHA512

172a53aba6810f6dbab4edc232264d3400bd48975fb9b1451d18f9bb859eebe8c7a4449d75b7f3e2e47d3a80c71244ab5393e1e675459028ff03a370dd6178da
SSDEEP

12288:boJLSwOINTig3HaPzEFAK1bwRxZQOFIcaZDjs6n8K0OVZKRkKE82uET:bw+wOINVmwn1kRxHIcqDY6n8/Pu9YE

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/2876-2-0x00000000023D0000-0x00000000024EB000-memory.dmp	family_djvu
behavioral1/memory/1604-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1604-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1604-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1604-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1604-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3816-37-0x0000000000400000-0x0000000000537000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4856	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-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ec1b76dc-fb01-4eae-8e1c-f75e14670abe\\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe\" --AutoStart"	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.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
6	api.2ip.ua
7	api.2ip.ua
21	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 844 set thread context of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.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
1604	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe
1604	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe
3816	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe
3816	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 2876 wrote to memory of 1604	2876	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	89
PID 1604 wrote to memory of 4856	1604	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	90
PID 1604 wrote to memory of 4856	1604	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	90
PID 1604 wrote to memory of 4856	1604	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	90
PID 1604 wrote to memory of 844	1604	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	91
PID 1604 wrote to memory of 844	1604	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	91
PID 1604 wrote to memory of 844	1604	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	91
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95
PID 844 wrote to memory of 3816	844	706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe	95

C:\Users\Admin\AppData\Local\Temp\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe
"C:\Users\Admin\AppData\Local\Temp\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe
  "C:\Users\Admin\AppData\Local\Temp\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1604
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\ec1b76dc-fb01-4eae-8e1c-f75e14670abe" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4856
- - C:\Users\Admin\AppData\Local\Temp\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe
    "C:\Users\Admin\AppData\Local\Temp\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:844
  - - C:\Users\Admin\AppData\Local\Temp\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe
      "C:\Users\Admin\AppData\Local\Temp\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3816

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
04ee530a2ffd1de095f443b454495f03

SHA1
19ed22e6c4d3fce1f524b941c321cd27c450ea9a

SHA256
f2137ca3929ea24b36de94c4412c1ec1e30d918b294363e35479b1dd1fc8f799

SHA512
981f7e61f336aa73205634be92b83f8ec67163d9e84b77cc1c0b8c1f20ba39c80bc8433028a03c2d3826abed1e572affc34e235682cf3ff4351240526d727bc2

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
2c54b2be3f8fb484dbef6a476739ab65

SHA1
dace3502be4e2d857ae5ec9dfae27d4f8253e625

SHA256
e99db20a8e919c14e08812cab0bcd0d45908ab8d7b2d13d190efce52defdfa20

SHA512
0e01aa57239bcb55cb17745d06e677edd740d4c875520e1a8e339cdbe2a11b1c5f905e0c8c79a3a1acb1c945840c8141fb30c464ed33d60d1d4592e2e6b68e87

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

Filesize
392B

MD5
a473d26b71e1682582bd483cc6bc8b00

SHA1
9e4034c4ff212631cee21413188fcdb0bb69a57a

SHA256
be1bc339f49b16ab5415cd818e9637d94a198366f414522576f73f38f0e79663

SHA512
f03f64c3e643307c36bf13f5810e383ee947eefcf4b975c0a2317cb645ef225d7ea191a912d5dec9ad4c505d00608d1d3fb89dcb4cb333d8824ee39b6cbe723d

Download Submit
C:\Users\Admin\AppData\Local\ec1b76dc-fb01-4eae-8e1c-f75e14670abe\706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1.exe

Filesize
810KB

MD5
97e5630fb3c890dbd33612ecbb882ca9

SHA1
aaef0e699015b543e58bbb2d132136699fa4a457

SHA256
706bcb60fbf012c8556c52fbb2ebc87a2ecb57b259c98591bfe31d321d0a91e1

SHA512
172a53aba6810f6dbab4edc232264d3400bd48975fb9b1451d18f9bb859eebe8c7a4449d75b7f3e2e47d3a80c71244ab5393e1e675459028ff03a370dd6178da

Download Submit
memory/844-18-0x0000000001FF0000-0x000000000208B000-memory.dmp

Filesize
620KB

Download
memory/1604-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2876-1-0x0000000000680000-0x0000000000718000-memory.dmp

Filesize
608KB

Download
memory/2876-2-0x00000000023D0000-0x00000000024EB000-memory.dmp

Filesize
1.1MB

Download
memory/3816-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3816-37-0x0000000000400000-0x0000000000537000-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