djvu | 43684bb4a9de7f90f1faab9fd2183891eb8a3a4ee635fd9a72995abae47b90fa

General

Target

299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Size

814KB
MD5

8db858c113bf9da58fa9a7524c7023e9
SHA1

d2a8dad63d4c66d3ac446c64f7c682584ab8b069
SHA256

299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0
SHA512

6336cd7afa29d5b8e36fb2279af3aa3e2da9f657a1769bf7dc6b6d60cff2e785f092fba3434af39abffe45cb9215bf7b852ced79d612f53c1b819f037042606f
SSDEEP

24576:QEDLISgyeNv0em9UBCV44ecLfN2LiktuUcrwwN:QQeaeE44BULikBi3

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vvew
offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
payload_url
http://rgyui.top/dl/build2.exe

http://acacaca.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-QsoSRIeAK6 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: 0530Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/1728-2-0x0000000002360000-0x000000000247B000-memory.dmp	family_djvu
behavioral2/memory/1268-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1268-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1268-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1268-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1268-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3080-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3080-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3080-21-0x0000000000400000-0x0000000000537000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4944	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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0a1ede29-e8e6-4371-9714-42e73acc0f45\\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe\" --AutoStart"	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.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
11	api.2ip.ua
12	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 2540 set thread context of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.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
4724	3080	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	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1268	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
1268	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1728 wrote to memory of 1268	1728	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	81
PID 1268 wrote to memory of 4944	1268	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	82
PID 1268 wrote to memory of 4944	1268	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	82
PID 1268 wrote to memory of 4944	1268	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	82
PID 1268 wrote to memory of 2540	1268	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	83
PID 1268 wrote to memory of 2540	1268	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	83
PID 1268 wrote to memory of 2540	1268	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	83
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87
PID 2540 wrote to memory of 3080	2540	299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe	87

C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
"C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
  "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.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:1268
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0a1ede29-e8e6-4371-9714-42e73acc0f45" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4944
- - C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
    "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2540
  - - C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
      "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:3080
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3080 -s 568
        5⤵
        Program crash
        
        PID:4724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3080 -ip 3080
1⤵
PID:4744

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\0a1ede29-e8e6-4371-9714-42e73acc0f45\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe

Filesize
814KB

MD5
8db858c113bf9da58fa9a7524c7023e9

SHA1
d2a8dad63d4c66d3ac446c64f7c682584ab8b069

SHA256
299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0

SHA512
6336cd7afa29d5b8e36fb2279af3aa3e2da9f657a1769bf7dc6b6d60cff2e785f092fba3434af39abffe45cb9215bf7b852ced79d612f53c1b819f037042606f

Download Submit
memory/1268-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1268-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1268-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1268-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1268-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1728-1-0x0000000002210000-0x00000000022AA000-memory.dmp

Filesize
616KB

Download
memory/1728-2-0x0000000002360000-0x000000000247B000-memory.dmp

Filesize
1.1MB

Download
memory/2540-19-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2540-25-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/3080-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3080-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3080-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads