djvu | d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee

Analysis

max time kernel
144s
max time network
125s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
01-07-2024 15:01

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General

Target

d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
Size

806KB
MD5

88932ab33c38072946abc06b426d33b8
SHA1

accc6e0ba8e1e7250e2634a1f0e7f06be7f4beb2
SHA256

d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee
SHA512

266beae33826041ee77d36f57b41ec4ffe9849faa6b40c4446e531685e30c317c3b282e4079b674a7f37ee79dafe92c41e5b0104e210703f4ca69f7013c9e4d7
SSDEEP

12288:qIowhzaoWcGawk7yVe+H1JU7VuzpzS3oxAiXZcmQGLu5t15KBM0JiY3u3SZtr9XW:vhzL5MkmQ+H/2KFXVotzeM03aSpyr

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test2/get.php

Attributes

extension
.waqa
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
payload_url
http://defgyma.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/abe121434ad837dd5bdd03878a14485820240531135509/34284d 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: 0875PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3968-2-0x00000000042D0000-0x00000000043EB000-memory.dmp	family_djvu
behavioral2/memory/1056-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1056-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1056-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1056-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1056-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-41-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid process

3916 icacls.exe

pid	process
3916	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\49ebd26b-85f9-429f-828b-dac37bc48150\\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe\" --AutoStart"	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.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.

Processes:

flow ioc

1 api.2ip.ua
2 api.2ip.ua
6 api.2ip.ua

flow	ioc
1	api.2ip.ua
2	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exed47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe

description	pid	process	target process
PID 3968 set thread context of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 set thread context of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exed47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe

pid	process
1056	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
1056	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
2868	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
2868	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exed47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exed47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe

C:\Users\Admin\AppData\Local\Temp\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
"C:\Users\Admin\AppData\Local\Temp\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3968

C:\Users\Admin\AppData\Local\Temp\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
"C:\Users\Admin\AppData\Local\Temp\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1056

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\49ebd26b-85f9-429f-828b-dac37bc48150" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3916

C:\Users\Admin\AppData\Local\Temp\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
"C:\Users\Admin\AppData\Local\Temp\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2284

C:\Users\Admin\AppData\Local\Temp\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
"C:\Users\Admin\AppData\Local\Temp\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2868

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize
1KB

MD5
2365869258df7a66a2121b802ca4afd9

SHA1
73acc30a2edeb9d6830de559bb8a74f35168135d

SHA256
d6b1932822bbd72a8e78c771717d992142348f67d625a42393719fefbe59b0ed

SHA512
795004bab536e128dbd81c188976d37c7b650efbfa5a80374df4c65a1049c27658f4620b7605583928eb167fcb69b4c99e4c8730c507b824a7bde9c7fb0e21f4

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Filesize
436B

MD5
1bfe0a81db078ea084ff82fe545176fe

SHA1
50b116f578bd272922fa8eae94f7b02fd3b88384

SHA256
5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f

SHA512
37c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize
174B

MD5
29312960703fc7712de574f826058332

SHA1
ca8c95c99e584e8e91580d39ad2637aa1aa8aed2

SHA256
042ef1c545ea9a02fbde31355a14c919f1c31543458e2d9379bb7381b5b68f0d

SHA512
01fc72fe69f7c54923ab896234f1b9fd3282018a9f48b7daea4a7c9730c44312433931f65cd6345458488e70ea6be7b35fa0dedcf1692abf45c51d8ef99c43c3

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize
170B

MD5
df3d1be48c5dc0f5f3b1327f6702bdda

SHA1
75b8414e4e157a1098d6c96e3edcb365a0986664

SHA256
41557f379fb7baa1e96fdd898e435bda044b3c7d07b04862d9a5c7917b8b0de6

SHA512
fe241ba3b6d4050ba4d61589899da5bec97eb993fc705c7ca20ad0b3aa87d8ae8d6890a40d1c82a1c170c4f85e75ec8c4eebeacd1bf9d9bba757ed4bac40ef6b

Download Submit
C:\Users\Admin\AppData\Local\49ebd26b-85f9-429f-828b-dac37bc48150\d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
Filesize
806KB

MD5
88932ab33c38072946abc06b426d33b8

SHA1
accc6e0ba8e1e7250e2634a1f0e7f06be7f4beb2

SHA256
d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee

SHA512
266beae33826041ee77d36f57b41ec4ffe9849faa6b40c4446e531685e30c317c3b282e4079b674a7f37ee79dafe92c41e5b0104e210703f4ca69f7013c9e4d7

Download Submit
memory/1056-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1056-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1056-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1056-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1056-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3968-2-0x00000000042D0000-0x00000000043EB000-memory.dmp

Filesize
1.1MB

Download
memory/3968-1-0x00000000040F0000-0x000000000418C000-memory.dmp

Filesize
624KB

Download

description	pid	process	target process
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 3968 wrote to memory of 1056	3968	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 1056 wrote to memory of 3916	1056	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	icacls.exe
PID 1056 wrote to memory of 3916	1056	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	icacls.exe
PID 1056 wrote to memory of 3916	1056	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	icacls.exe
PID 1056 wrote to memory of 2284	1056	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 1056 wrote to memory of 2284	1056	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 1056 wrote to memory of 2284	1056	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe
PID 2284 wrote to memory of 2868	2284	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe	d47e05b0ad27c651fb9cf73444e1f6a26514acb16998e92fca8be115ae6a2dee.exe