djvu | 875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9

Analysis

max time kernel
213s
max time network
252s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
30/11/2022, 22:54

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General

Target
875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
Size 703KB
Sample221130-2vr5dace24
SHA256 875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9
MD5 9f86d39cef8f2d55ee153628c599f125
SHA1 ffcca079744b576dec190e17f8a96f6283875729
SHA512 204d27e878e9a7509b4f40ab55fd6bca1fbe989f9b85a21429008f48cf57c8c1730387667e5affaf3a48c25db69c3f0aabf5d9d4f1d963e39343cfb1cf884b72
SSDEEP 12288:qMn69uipdd3heOMUL41WlMemFG0gR2jBjR8LOX6mtVjlJDOzoUOvD6uRrb:baXpteniUEVLOKaVpxOzo9b6
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu vidar 517 discovery persistence ransomware stealer

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.uyro
offline_id
HtkmULXEgJoZa495hFUJlvKCD0OwnxklbkoITjt1
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-5UcwRdS3ED 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: 0609djfsieE

rsa_pubkey.plain

Extracted

Family

vidar

Version

Botnet

https://t.me/asifrazatg
https://steamcommunity.com/profiles/76561199439929669

Attributes

profile_id
517

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/1604-134-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1604-135-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3420-136-0x0000000002220000-0x000000000233B000-memory.dmp	family_djvu
behavioral1/memory/1604-138-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1604-139-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1604-143-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4476-148-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4476-147-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4476-150-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Executes dropped EXE 3 IoCs

pid	Process
1336	build2.exe
2264	build2.exe
1864	build3.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4880	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\46c1b46b-5647-4f7e-9f55-dec02a9aa7f4\\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe\" --AutoStart"	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.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.

flow	ioc
34	api.2ip.ua
53	api.2ip.ua

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3420 set thread context of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3236 set thread context of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 1336 set thread context of 2264	1336	build2.exe	91

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
4396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1604	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
1604	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
4476	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
4476	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 3420 wrote to memory of 1604	3420	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	81
PID 1604 wrote to memory of 4880	1604	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	82
PID 1604 wrote to memory of 4880	1604	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	82
PID 1604 wrote to memory of 4880	1604	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	82
PID 1604 wrote to memory of 3236	1604	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	85
PID 1604 wrote to memory of 3236	1604	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	85
PID 1604 wrote to memory of 3236	1604	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	85
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 3236 wrote to memory of 4476	3236	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	87
PID 4476 wrote to memory of 1336	4476	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	90
PID 4476 wrote to memory of 1336	4476	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	90
PID 4476 wrote to memory of 1336	4476	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	90
PID 1336 wrote to memory of 2264	1336	build2.exe	91
PID 1336 wrote to memory of 2264	1336	build2.exe	91
PID 1336 wrote to memory of 2264	1336	build2.exe	91
PID 1336 wrote to memory of 2264	1336	build2.exe	91
PID 1336 wrote to memory of 2264	1336	build2.exe	91
PID 1336 wrote to memory of 2264	1336	build2.exe	91
PID 1336 wrote to memory of 2264	1336	build2.exe	91
PID 1336 wrote to memory of 2264	1336	build2.exe	91
PID 1336 wrote to memory of 2264	1336	build2.exe	91
PID 4476 wrote to memory of 1864	4476	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	92
PID 4476 wrote to memory of 1864	4476	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	92
PID 4476 wrote to memory of 1864	4476	875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe	92
PID 1864 wrote to memory of 4396	1864	build3.exe	93
PID 1864 wrote to memory of 4396	1864	build3.exe	93
PID 1864 wrote to memory of 4396	1864	build3.exe	93

C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
"C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
  "C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1604
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\46c1b46b-5647-4f7e-9f55-dec02a9aa7f4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4880
- - C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
    "C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3236
  - - C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
      "C:\Users\Admin\AppData\Local\Temp\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Checks computer location settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:4476
    - - C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe
        
        "C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:1336
      - C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe
        
        "C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe"
        6⤵
        Executes dropped EXE
        
        PID:2264
    - - C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build3.exe
        
        "C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build3.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:1864
      - C:\Windows\SysWOW64\schtasks.exe
        
        /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
        6⤵
        Creates scheduled task(s)
        
        PID:4396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe

Path C:\Users\Admin\AppData\Local\46c1b46b-5647-4f7e-9f55-dec02a9aa7f4\875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9.exe
Size 703KB
SHA256 875eb3cbcaa92db668777dc133f67fe99d988a96668e12b04583633553a670b9
MD5 9f86d39cef8f2d55ee153628c599f125
SHA1 ffcca079744b576dec190e17f8a96f6283875729
SHA512 204d27e878e9a7509b4f40ab55fd6bca1fbe989f9b85a21429008f48cf57c8c1730387667e5affaf3a48c25db69c3f0aabf5d9d4f1d963e39343cfb1cf884b72
SSDEEP 12288:qMn69uipdd3heOMUL41WlMemFG0gR2jBjR8LOX6mtVjlJDOzoUOvD6uRrb:baXpteniUEVLOKaVpxOzo9b6
MD5 SHA1 SHA512 SSDEEP

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build2.exe

Path C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe
Size 258KB
SHA256 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f
MD5 b9212ded69fae1fa1fb5d6db46a9fb76
SHA1 58face4245646b1cd379ee49f03a701eab1642be
SHA512 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342
SSDEEP 6144:YdAhH6pftFbsb8XODU4aLTwzLs0+mKnBtt:VUpftVcwIU4aLTwz5tItt
MD5 SHA1 SHA512 SSDEEP

Submit Download

build2.exe

Path C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe
Size 258KB
SHA256 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f
MD5 b9212ded69fae1fa1fb5d6db46a9fb76
SHA1 58face4245646b1cd379ee49f03a701eab1642be
SHA512 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342
SSDEEP 6144:YdAhH6pftFbsb8XODU4aLTwzLs0+mKnBtt:VUpftVcwIU4aLTwz5tItt
MD5 SHA1 SHA512 SSDEEP

Submit Download

build2.exe

Path C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build2.exe
Size 258KB
SHA256 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f
MD5 b9212ded69fae1fa1fb5d6db46a9fb76
SHA1 58face4245646b1cd379ee49f03a701eab1642be
SHA512 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342
SSDEEP 6144:YdAhH6pftFbsb8XODU4aLTwzLs0+mKnBtt:VUpftVcwIU4aLTwz5tItt
MD5 SHA1 SHA512 SSDEEP

Submit Download

build3.exe

Path C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build3.exe
Size 9KB
SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
MD5 9ead10c08e72ae41921191f8db39bc16
SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
MD5 SHA1 SHA512 SSDEEP

Submit Download

build3.exe

Path C:\Users\Admin\AppData\Local\f06bf8ac-d9b1-420f-a6cc-88dccaee6418\build3.exe
Size 9KB
SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
MD5 9ead10c08e72ae41921191f8db39bc16
SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
MD5 SHA1 SHA512 SSDEEP

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memory/1336-160-0x00000000005D0000-0x000000000061B000-memory.dmp

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memory/1336-157-0x000000000068E000-0x00000000006BA000-memory.dmp

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memory/1604-139-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1604-138-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1604-143-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1604-135-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1604-134-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2264-155-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/2264-166-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/2264-167-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/2264-159-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/2264-158-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/2264-161-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/3236-146-0x0000000002145000-0x00000000021D7000-memory.dmp

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memory/3420-132-0x000000000218B000-0x000000000221D000-memory.dmp

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memory/3420-137-0x000000000218B000-0x000000000221D000-memory.dmp

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memory/3420-136-0x0000000002220000-0x000000000233B000-memory.dmp

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memory/4476-150-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4476-147-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4476-148-0x0000000000400000-0x0000000000537000-memory.dmp

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