djvu | d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84

General

Target

d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
Size

706KB
MD5

d0eec83439402a84e02f3afd3b203738
SHA1

67b844fe41265e47f97fd3c72225d5c041296f93
SHA256

d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84
SHA512

e31bc4c9266f3a23236ea0603e92ee38e3416c27e47ec853537c92b8dc0c39d29a78893ef1e72ab59d1aac0ebf8bf9e3f6516f828e03d6ade988789f15a434da
SSDEEP

12288:7qkhwkQBK6G4tGz7V1meMmrLihBs0NlqBxZdTJ/EzOaNBRUdb:7WkQA6G4tJeMwL8CZBJ/EKmRU

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 10 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1272-133-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-134-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-136-0x0000000002550000-0x000000000266B000-memory.dmp	family_djvu
behavioral1/memory/1272-137-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-138-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-139-0x0000000002550000-0x000000000266B000-memory.dmp	family_djvu
behavioral1/memory/1272-143-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-147-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-148-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-150-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

build2.exe

pid process

1372 build2.exe

pid	process
1372	build2.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exed5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4080 icacls.exe

pid	process
4080	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\977ec664-83eb-425c-9e22-d21c79eebcb5\\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe\" --AutoStart"	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.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

26 api.2ip.ua
27 api.2ip.ua

flow	ioc
26	api.2ip.ua
27	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exed5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe

description	pid	process	target process
PID 4760 set thread context of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 set thread context of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.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 4 IoCs

Processes:

d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exed5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe

pid	process
1272	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
1272	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
2584	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
2584	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exed5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exed5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exed5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe

C:\Users\Admin\AppData\Local\Temp\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
"C:\Users\Admin\AppData\Local\Temp\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4760

C:\Users\Admin\AppData\Local\Temp\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
"C:\Users\Admin\AppData\Local\Temp\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1272

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\977ec664-83eb-425c-9e22-d21c79eebcb5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4080

C:\Users\Admin\AppData\Local\Temp\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
"C:\Users\Admin\AppData\Local\Temp\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3644

C:\Users\Admin\AppData\Local\Temp\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
"C:\Users\Admin\AppData\Local\Temp\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2584

C:\Users\Admin\AppData\Local\eda86f1b-1e18-45f9-bf8a-8ce51f8ca37b\build2.exe
"C:\Users\Admin\AppData\Local\eda86f1b-1e18-45f9-bf8a-8ce51f8ca37b\build2.exe"
5⤵
- Executes dropped EXE
PID:1372

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\977ec664-83eb-425c-9e22-d21c79eebcb5\d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe

Filesize
706KB

MD5
d0eec83439402a84e02f3afd3b203738

SHA1
67b844fe41265e47f97fd3c72225d5c041296f93

SHA256
d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84

SHA512
e31bc4c9266f3a23236ea0603e92ee38e3416c27e47ec853537c92b8dc0c39d29a78893ef1e72ab59d1aac0ebf8bf9e3f6516f828e03d6ade988789f15a434da

Download Submit
C:\Users\Admin\AppData\Local\eda86f1b-1e18-45f9-bf8a-8ce51f8ca37b\build2.exe

Filesize
299KB

MD5
03ddc9dc7312d33ad1c5f6ed2d167645

SHA1
e75de38aee3b0beb5cc91334ecbd8a876c8351a6

SHA256
60724da01de35adee6cb34317cd2947fbcb791a8381386d79072857a19a58708

SHA512
9a23eb681563719a6ad9202038a307e842b9a60c16aec2f01ce422feca11ac8d6e1d0e9a30e110e17bec4421121643ac87f075eae8bf127dca2213f7a2c6f1aa

Download Submit
C:\Users\Admin\AppData\Local\eda86f1b-1e18-45f9-bf8a-8ce51f8ca37b\build2.exe

Filesize
299KB

MD5
03ddc9dc7312d33ad1c5f6ed2d167645

SHA1
e75de38aee3b0beb5cc91334ecbd8a876c8351a6

SHA256
60724da01de35adee6cb34317cd2947fbcb791a8381386d79072857a19a58708

SHA512
9a23eb681563719a6ad9202038a307e842b9a60c16aec2f01ce422feca11ac8d6e1d0e9a30e110e17bec4421121643ac87f075eae8bf127dca2213f7a2c6f1aa

Download Submit
memory/1272-143-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-133-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-134-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-137-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-138-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-132-0x0000000000000000-mapping.dmp

Download
memory/1372-151-0x0000000000000000-mapping.dmp

Download
memory/2584-148-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-144-0x0000000000000000-mapping.dmp

Download
memory/2584-147-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-150-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3644-142-0x0000000000000000-mapping.dmp

Download
memory/3644-146-0x000000000239E000-0x0000000002430000-memory.dmp

Filesize
584KB

Download
memory/4080-140-0x0000000000000000-mapping.dmp

Download
memory/4760-139-0x0000000002550000-0x000000000266B000-memory.dmp

Filesize
1.1MB

Download
memory/4760-136-0x0000000002550000-0x000000000266B000-memory.dmp

Filesize
1.1MB

Download
memory/4760-135-0x0000000002482000-0x0000000002514000-memory.dmp

Filesize
584KB

Download

description	pid	process	target process
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 4760 wrote to memory of 1272	4760	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 1272 wrote to memory of 4080	1272	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	icacls.exe
PID 1272 wrote to memory of 4080	1272	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	icacls.exe
PID 1272 wrote to memory of 4080	1272	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	icacls.exe
PID 1272 wrote to memory of 3644	1272	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 1272 wrote to memory of 3644	1272	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 1272 wrote to memory of 3644	1272	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 3644 wrote to memory of 2584	3644	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe
PID 2584 wrote to memory of 1372	2584	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	build2.exe
PID 2584 wrote to memory of 1372	2584	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	build2.exe
PID 2584 wrote to memory of 1372	2584	d5731b8304399709aaba28cf1625e8e3018f665cd74b93fd19d1cd5d0a436b84.exe	build2.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads