djvu | c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8

General

Target

c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
Size

666KB
MD5

173543f0ef10ba239c27c6b8bbeaed46
SHA1

737a3864a20aa7a73413ac151b10c755d176d333
SHA256

c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8
SHA512

7305ddc5252287d96ea02378fa47cb32db32a8787ebf1fa4210690fb476a95450da94815acb8933761ee67549ffa628c687046ff49199ddbf358a8e9126883a4
SSDEEP

12288:27/fggFMjnU3e8DRLkMgugBs4c75Isors2qufOn6Iei:27/fgEinQ3RLtHMaIsoA2tfHIe

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.kcvp
offline_id
hlqzhQ6w5SquNDF4Ul2XBDJQkSIKbAT6rmRBTit1
payload_url
http://uaery.top/dl/build2.exe

http://fresherlights.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. You can get and look video overview decrypt tool: https://we.tl/t-lj5qINGbTc Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0607Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 8 IoCs

Processes:

resource	yara_rule
behavioral1/memory/772-136-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1688-135-0x00000000028A0000-0x00000000029BB000-memory.dmp	family_djvu
behavioral1/memory/772-134-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/772-137-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/772-138-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/804-145-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/804-146-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/804-148-0x0000000000400000-0x0000000000537000-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

Processes:

c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4296 icacls.exe

pid	process
4296	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ce277915-aa4a-47d7-8b7a-5e6a0e07a718\\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe\" --AutoStart"	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.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

47 api.2ip.ua
46 api.2ip.ua

flow	ioc
47	api.2ip.ua
46	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exec75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe

description	pid	process	target process
PID 1688 set thread context of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 set thread context of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe

pid	process
772	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
772	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exec75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exec75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe

C:\Users\Admin\AppData\Local\Temp\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
"C:\Users\Admin\AppData\Local\Temp\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1688

C:\Users\Admin\AppData\Local\Temp\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
"C:\Users\Admin\AppData\Local\Temp\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:772

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\ce277915-aa4a-47d7-8b7a-5e6a0e07a718" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4296

C:\Users\Admin\AppData\Local\Temp\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
"C:\Users\Admin\AppData\Local\Temp\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:664

C:\Users\Admin\AppData\Local\Temp\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
"C:\Users\Admin\AppData\Local\Temp\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe" --Admin IsNotAutoStart IsNotTask
4⤵
PID:804

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\ce277915-aa4a-47d7-8b7a-5e6a0e07a718\c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
Filesize
666KB

MD5
173543f0ef10ba239c27c6b8bbeaed46

SHA1
737a3864a20aa7a73413ac151b10c755d176d333

SHA256
c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8

SHA512
7305ddc5252287d96ea02378fa47cb32db32a8787ebf1fa4210690fb476a95450da94815acb8933761ee67549ffa628c687046ff49199ddbf358a8e9126883a4

Download Submit
memory/664-144-0x0000000002787000-0x0000000002819000-memory.dmp

Filesize
584KB

Download
memory/664-141-0x0000000000000000-mapping.dmp

Download
memory/772-138-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/772-134-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/772-137-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/772-136-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/772-133-0x0000000000000000-mapping.dmp

Download
memory/804-142-0x0000000000000000-mapping.dmp

Download
memory/804-145-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/804-146-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/804-148-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1688-132-0x00000000027DB000-0x000000000286D000-memory.dmp

Filesize
584KB

Download
memory/1688-135-0x00000000028A0000-0x00000000029BB000-memory.dmp

Filesize
1.1MB

Download
memory/4296-139-0x0000000000000000-mapping.dmp

Download

description	pid	process	target process
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 1688 wrote to memory of 772	1688	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 772 wrote to memory of 4296	772	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	icacls.exe
PID 772 wrote to memory of 4296	772	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	icacls.exe
PID 772 wrote to memory of 4296	772	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	icacls.exe
PID 772 wrote to memory of 664	772	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 772 wrote to memory of 664	772	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 772 wrote to memory of 664	772	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe
PID 664 wrote to memory of 804	664	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe	c75384db3ff8213971157756a51156bcee673e6a71b53bce7eebffbe67592fb8.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads