djvu | 42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932

Analysis

max time kernel
151s
max time network
181s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
02/12/2022, 16:24

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General

Target
42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
Size 848KB
Sample221202-twbvsahd4v
SHA256 42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932
MD5 b276c03b6fd8df69964c5d4e687881d1
SHA1 7c4be72dc54658bdb49bec08bcb974510ce2af63
SHA512 89c9d3250c01da750668149fce9a6ffbe0242af16afc72a4dca0e7e1a4fa4dc098787ba91c08987feedc420aedda2fd466ad6453618ad11c3be0724be1861a42
SSDEEP 12288:KGJCaj2AZYqF2H/cUjGSokHXnwz7SDlJmF0QIee63xyERQg:KGX2kYqFE/5GSpHXwz2Dm2QA63wwF
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/1516-133-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1516-134-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1516-136-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1232-137-0x0000000000B40000-0x0000000000C5B000-memory.dmp	family_djvu
behavioral1/memory/1516-138-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1516-142-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3468-145-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3468-147-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3468-148-0x0000000000400000-0x0000000000537000-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 2 IoCs

pid	Process
4108	build2.exe
2812	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
5036	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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6ad26204-c4a3-46e1-8329-5d55464f040c\\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe\" --AutoStart"	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
13	api.2ip.ua

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1232 set thread context of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 2852 set thread context of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 4108 set thread context of 2812	4108	build2.exe	98

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

pid	Process
1516	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
1516	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
3468	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
3468	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1232 wrote to memory of 1516	1232	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	82
PID 1516 wrote to memory of 5036	1516	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	84
PID 1516 wrote to memory of 5036	1516	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	84
PID 1516 wrote to memory of 5036	1516	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	84
PID 1516 wrote to memory of 2852	1516	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	89
PID 1516 wrote to memory of 2852	1516	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	89
PID 1516 wrote to memory of 2852	1516	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	89
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 2852 wrote to memory of 3468	2852	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	93
PID 3468 wrote to memory of 4108	3468	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	97
PID 3468 wrote to memory of 4108	3468	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	97
PID 3468 wrote to memory of 4108	3468	42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe	97
PID 4108 wrote to memory of 2812	4108	build2.exe	98
PID 4108 wrote to memory of 2812	4108	build2.exe	98
PID 4108 wrote to memory of 2812	4108	build2.exe	98
PID 4108 wrote to memory of 2812	4108	build2.exe	98
PID 4108 wrote to memory of 2812	4108	build2.exe	98
PID 4108 wrote to memory of 2812	4108	build2.exe	98
PID 4108 wrote to memory of 2812	4108	build2.exe	98
PID 4108 wrote to memory of 2812	4108	build2.exe	98
PID 4108 wrote to memory of 2812	4108	build2.exe	98

C:\Users\Admin\AppData\Local\Temp\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
"C:\Users\Admin\AppData\Local\Temp\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Users\Admin\AppData\Local\Temp\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
  "C:\Users\Admin\AppData\Local\Temp\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1516
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\6ad26204-c4a3-46e1-8329-5d55464f040c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:5036
- - C:\Users\Admin\AppData\Local\Temp\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
    "C:\Users\Admin\AppData\Local\Temp\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2852
  - - C:\Users\Admin\AppData\Local\Temp\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
      "C:\Users\Admin\AppData\Local\Temp\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Checks computer location settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:3468
    - - C:\Users\Admin\AppData\Local\b6c3bb1e-8151-4670-9e58-223719199a60\build2.exe
        
        "C:\Users\Admin\AppData\Local\b6c3bb1e-8151-4670-9e58-223719199a60\build2.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:4108
      - C:\Users\Admin\AppData\Local\b6c3bb1e-8151-4670-9e58-223719199a60\build2.exe
        
        "C:\Users\Admin\AppData\Local\b6c3bb1e-8151-4670-9e58-223719199a60\build2.exe"
        6⤵
        Executes dropped EXE
        
        PID:2812

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

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

42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe

Path C:\Users\Admin\AppData\Local\6ad26204-c4a3-46e1-8329-5d55464f040c\42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932.exe
Size 848KB
SHA256 42f213728bf575228c0f8ffc30f3185ccad9c33d9c91853059f937a6f953c932
MD5 b276c03b6fd8df69964c5d4e687881d1
SHA1 7c4be72dc54658bdb49bec08bcb974510ce2af63
SHA512 89c9d3250c01da750668149fce9a6ffbe0242af16afc72a4dca0e7e1a4fa4dc098787ba91c08987feedc420aedda2fd466ad6453618ad11c3be0724be1861a42
SSDEEP 12288:KGJCaj2AZYqF2H/cUjGSokHXnwz7SDlJmF0QIee63xyERQg:KGX2kYqFE/5GSpHXwz2Dm2QA63wwF
MD5 SHA1 SHA512 SSDEEP

Submit Download

build2.exe

Path C:\Users\Admin\AppData\Local\b6c3bb1e-8151-4670-9e58-223719199a60\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\b6c3bb1e-8151-4670-9e58-223719199a60\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\b6c3bb1e-8151-4670-9e58-223719199a60\build2.exe
Size 258KB
SHA256 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f
MD5 b9212ded69fae1fa1fb5d6db46a9fb76
SHA1 58face4245646b1cd379ee49f03a701eab1642be
SHA512 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342
SSDEEP 6144:YdAhH6pftFbsb8XODU4aLTwzLs0+mKnBtt:VUpftVcwIU4aLTwz5tItt
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1232-135-0x0000000000997000-0x0000000000A28000-memory.dmp

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memory/1232-137-0x0000000000B40000-0x0000000000C5B000-memory.dmp

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memory/1516-142-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1516-138-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1516-133-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1516-134-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1516-136-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2812-157-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/2812-159-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/2812-160-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/2812-161-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/2812-155-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/2852-146-0x00000000005F7000-0x0000000000688000-memory.dmp

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memory/3468-147-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3468-148-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3468-145-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4108-153-0x00000000020D0000-0x000000000211B000-memory.dmp

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memory/4108-152-0x000000000074D000-0x0000000000779000-memory.dmp

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memory/4108-158-0x000000000074D000-0x0000000000779000-memory.dmp

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