djvu | 4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70

General

Target

JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
Size

837KB
MD5

1f2621ad5f259c41db07928b3d0d44bf
SHA1

d3dfd87a896838d453948449fe8cb49315ecb5f8
SHA256

4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70
SHA512

4b426e51c7bf011fe5314f9cd70756b67406a05da149a792746b4261c11081dd9b138672a1ca165242411592dec9434f58fcff24c26032f513b895fd0cc243d4
SSDEEP

24576:4a5mcUmcYxofu+QjmUtnZgxLgvQUH/C9yMvKq:4a5TBUDUh6xLaYyf

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.tuid
offline_id
LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1
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-FglTTmgzZT 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: 0440tOjkfd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/3128-2-0x00000000022A0000-0x00000000023BB000-memory.dmp	family_djvu
behavioral2/memory/3780-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3780-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3780-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3780-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3780-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2552-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2552-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2552-23-0x0000000000400000-0x0000000000537000-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	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2444	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\\b1a53887-ec88-42fd-afc1-c9bd4b85d358\\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe\" --AutoStart"	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.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
13	api.2ip.ua
14	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3128 set thread context of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 4716 set thread context of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90

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
1756	2552	WerFault.exe	90

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	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3780	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
3780	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3128 wrote to memory of 3780	3128	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	82
PID 3780 wrote to memory of 2444	3780	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	83
PID 3780 wrote to memory of 2444	3780	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	83
PID 3780 wrote to memory of 2444	3780	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	83
PID 3780 wrote to memory of 4716	3780	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	84
PID 3780 wrote to memory of 4716	3780	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	84
PID 3780 wrote to memory of 4716	3780	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	84
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90
PID 4716 wrote to memory of 2552	4716	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.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:3780
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\b1a53887-ec88-42fd-afc1-c9bd4b85d358" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2444
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4716
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:2552
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2552 -s 576
        5⤵
        Program crash
        
        PID:1756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2552 -ip 2552
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\b1a53887-ec88-42fd-afc1-c9bd4b85d358\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe

Filesize
837KB

MD5
1f2621ad5f259c41db07928b3d0d44bf

SHA1
d3dfd87a896838d453948449fe8cb49315ecb5f8

SHA256
4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70

SHA512
4b426e51c7bf011fe5314f9cd70756b67406a05da149a792746b4261c11081dd9b138672a1ca165242411592dec9434f58fcff24c26032f513b895fd0cc243d4

Download Submit
memory/2552-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2552-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2552-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3128-2-0x00000000022A0000-0x00000000023BB000-memory.dmp

Filesize
1.1MB

Download
memory/3128-1-0x0000000002190000-0x000000000222A000-memory.dmp

Filesize
616KB

Download
memory/3780-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3780-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3780-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3780-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3780-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4716-19-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/4716-25-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads