djvu | 35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22

General

Target

35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
Size

703KB
MD5

8d35c959439087a5afeb4102f8d9a537
SHA1

9db82f937ff4e3ef9881c0d72557418cee6fb9b3
SHA256

35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22
SHA512

a7c49eca997c58bde5dc7e2edb53a310894f7fc17d4ff7e1c6ab9edf8927738d7143158eb71f7da60d5e268da3cb1f5066b90d514285f784b42f4417ff8dfefe
SSDEEP

12288:VGHSBXVfmazQuehq0vfn3XQTCLPjTlGzqJ8gyOt2PdeojBWat:VGueuVeo0oyPXiQPVUPwQBWa

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/4532-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp	family_djvu
behavioral1/memory/2604-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2604-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2604-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2604-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2604-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/728-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/728-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/728-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/728-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/728-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/728-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/728-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/728-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/728-35-0x0000000000400000-0x0000000000537000-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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2484	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-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\92e9acd4-2088-4a0b-9833-1799f598345a\\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe\" --AutoStart"	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.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
19	api.2ip.ua
6	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4532 set thread context of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 876 set thread context of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88

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
2604	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
2604	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
728	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
728	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 4532 wrote to memory of 2604	4532	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	82
PID 2604 wrote to memory of 2484	2604	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	84
PID 2604 wrote to memory of 2484	2604	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	84
PID 2604 wrote to memory of 2484	2604	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	84
PID 2604 wrote to memory of 876	2604	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	86
PID 2604 wrote to memory of 876	2604	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	86
PID 2604 wrote to memory of 876	2604	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	86
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88
PID 876 wrote to memory of 728	876	35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe	88

C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
"C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
  "C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2604
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\92e9acd4-2088-4a0b-9833-1799f598345a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2484
- - C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
    "C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:876
  - - C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
      "C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:728

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
195fc28150bef9b30510eed36fb325af

SHA1
1ea8a314d8af1d431b77d5280d1782e9a8e867c6

SHA256
5c2e51ccf5767f80257a0a0bb66dee40957e5379431e15a118e7f1343ad1f6e0

SHA512
537da7e46d8b5afc796c1908042088c583c5380fb729f3665845fe36286b3efeaec9fa26475e9c2263f55b1eca04bd7ae26088a9a85950b2b7f750fd24eadcfc

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
d3a63e66f5d9607a347a08deb3e1890b

SHA1
df2ed50de14bbb9f3e5ca1548cbd6bbb2daac99c

SHA256
b0e9296973270823be8a54e41454ea1e1df07f36b84672d6d9e1af86b7ba629a

SHA512
3cf4edf3fbb4f8c1af28af3390bff504d949818ebe16395f79ed1152907301db4b84fe42c8a4dea5bb6d088775b0a964b98ebe2aad586fa042bf3b57d7d13e1a

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

Filesize
392B

MD5
ebae875c70c43966e9fc32aba2f29cbc

SHA1
b117fa04ef1700f0a484f48d46c8bb4589ef0e59

SHA256
c57cb73159dbcebfb7901c1525c2eb2ce0cff5a12925b5c0f52d7911c200adb3

SHA512
61678196f3fc5755d16cb00b044e4ddd8a66b10dee895b0e021c9f7e4f31243f683abc4f14edbe92922c0b1f5e2c72279069eed03f73a7e05f860e44da26e925

Download Submit
C:\Users\Admin\AppData\Local\92e9acd4-2088-4a0b-9833-1799f598345a\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe

Filesize
703KB

MD5
8d35c959439087a5afeb4102f8d9a537

SHA1
9db82f937ff4e3ef9881c0d72557418cee6fb9b3

SHA256
35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22

SHA512
a7c49eca997c58bde5dc7e2edb53a310894f7fc17d4ff7e1c6ab9edf8927738d7143158eb71f7da60d5e268da3cb1f5066b90d514285f784b42f4417ff8dfefe

Download Submit
memory/728-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/728-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2604-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2604-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2604-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2604-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2604-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4532-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

Filesize
1.1MB

Download
memory/4532-1-0x0000000004930000-0x00000000049CC000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads