djvu | 9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439

Analysis

max time kernel
146s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
25-06-2024 09:30

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General

Target

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
Size

839KB
MD5

71b44c9a55f3b40681f6a5524ca9821d
SHA1

a7b8eb80f4fd81445515b68aa7cf7f4fec4a0295
SHA256

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439
SHA512

a9568bc534c404bd9f13e52e86f4c23158e4cb117c31c25c26db3bad609148251e902f8f2c6d0b0ab3daebd988ae2eba305feeb1a9fc94bc0f44ea4712606492
SSDEEP

12288:oFLV3SQMC2KjSnCs/urQO4VivUI6q9ulGvxnrgJMKut3KENjEhQEOuV:iSQaCsgUI6grzt3K4EWlu

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 16 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1700-2-0x0000000004640000-0x000000000475B000-memory.dmp	family_djvu
behavioral2/memory/2408-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2408-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2408-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2408-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2408-12-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5060-30-0x0000000000400000-0x0000000000537000-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

4476 icacls.exe

pid	process
4476	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\db68d32f-460f-4d12-b75d-db47cfded62c\\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe\" --AutoStart"	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 api.2ip.ua
5 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

description	pid	process	target process
PID 1700 set thread context of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 set thread context of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.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:

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

pid	process
2408	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
2408	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
5060	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
5060	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
"C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1700

C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
"C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2408

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\db68d32f-460f-4d12-b75d-db47cfded62c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4476

C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
"C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1788

C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
"C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:5060

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\db68d32f-460f-4d12-b75d-db47cfded62c\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
Filesize
839KB

MD5
71b44c9a55f3b40681f6a5524ca9821d

SHA1
a7b8eb80f4fd81445515b68aa7cf7f4fec4a0295

SHA256
9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439

SHA512
a9568bc534c404bd9f13e52e86f4c23158e4cb117c31c25c26db3bad609148251e902f8f2c6d0b0ab3daebd988ae2eba305feeb1a9fc94bc0f44ea4712606492

Download Submit
memory/1700-1-0x0000000004510000-0x00000000045A6000-memory.dmp

Filesize
600KB

Download
memory/1700-2-0x0000000004640000-0x000000000475B000-memory.dmp

Filesize
1.1MB

Download
memory/2408-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2408-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2408-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2408-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2408-12-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5060-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1700 wrote to memory of 2408	1700	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2408 wrote to memory of 4476	2408	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	icacls.exe
PID 2408 wrote to memory of 4476	2408	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	icacls.exe
PID 2408 wrote to memory of 4476	2408	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	icacls.exe
PID 2408 wrote to memory of 1788	2408	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2408 wrote to memory of 1788	2408	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2408 wrote to memory of 1788	2408	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1788 wrote to memory of 5060	1788	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe