djvu | 4e55d2f399fd3b13f80f77ef214a2b2c328e57968ebad37c21be67f8ef0957a6

General

Target

b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Size

761KB
MD5

d829a46501729b196b794f955aa69cc0
SHA1

20efd5be2d09c31001c7b107388a9aee76f41eea
SHA256

b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41
SHA512

1497087e6fc04c23043da0974db4cd98c4c77a1509f648b2e230f0a8f5727fae3c8dd463fb1d9cc1e7094fb9692c35630999f7c14c4c28b837dc6dd72e75d9ec
SSDEEP

12288:WvbhHdeD79q7DmMHUvJqHv/bpxwW4nnpdT0LHdVdjl8/e+7krnhOQUc4Mng/KWDi:E7eVSeJqPjQXnoLHdVdm/37kMQb4pKUi

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes

extension
.ghas
offline_id
miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/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-0SLhZxAjRX 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: 0445JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/3088-2-0x0000000002220000-0x000000000233B000-memory.dmp	family_djvu
behavioral2/memory/4280-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4280-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4280-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4280-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4280-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1660-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1660-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1660-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4920	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5a060378-0a5d-44d6-b3ea-e5faaae13326\\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe\" --AutoStart"	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.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
8	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3088 set thread context of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 5072 set thread context of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4860	1660	WerFault.exe	87

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4280	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
4280	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 3088 wrote to memory of 4280	3088	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	83
PID 4280 wrote to memory of 4920	4280	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	84
PID 4280 wrote to memory of 4920	4280	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	84
PID 4280 wrote to memory of 4920	4280	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	84
PID 4280 wrote to memory of 5072	4280	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	85
PID 4280 wrote to memory of 5072	4280	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	85
PID 4280 wrote to memory of 5072	4280	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	85
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87
PID 5072 wrote to memory of 1660	5072	b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe	87

C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
"C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3088
- C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
  "C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4280
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\5a060378-0a5d-44d6-b3ea-e5faaae13326" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4920
- - C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
    "C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5072
  - - C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe
      "C:\Users\Admin\AppData\Local\Temp\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:1660
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 584
        5⤵
        Program crash
        
        PID:4860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1660 -ip 1660
1⤵
PID:1712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\5a060378-0a5d-44d6-b3ea-e5faaae13326\b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41.exe

Filesize
761KB

MD5
d829a46501729b196b794f955aa69cc0

SHA1
20efd5be2d09c31001c7b107388a9aee76f41eea

SHA256
b7f005f78f4fa1f50156e6ce98373aef46ea5b594322ad146d14e892ef04ce41

SHA512
1497087e6fc04c23043da0974db4cd98c4c77a1509f648b2e230f0a8f5727fae3c8dd463fb1d9cc1e7094fb9692c35630999f7c14c4c28b837dc6dd72e75d9ec

Download Submit
memory/1660-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1660-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1660-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3088-2-0x0000000002220000-0x000000000233B000-memory.dmp

Filesize
1.1MB

Download
memory/3088-1-0x0000000000770000-0x0000000000809000-memory.dmp

Filesize
612KB

Download
memory/4280-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4280-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4280-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4280-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4280-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-19-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/5072-25-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads