djvu | 55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b

General

Target

JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe
Size

767KB
MD5

a7bf7a2dc43fb14168aedaa3d5b38607
SHA1

f02794710dce594ba39b80adf294e196ae17d43a
SHA256

55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b
SHA512

158cae02b822708336bc9084ec5c23fdb6c15851bbef355acdd26e4e46ddbf46241df5aaba62b554948f0041c3bdbab8d3d020f2860358cee06909e960e79fee
SSDEEP

12288:fjt5rDpu4y3/p2hvilax1Dg6N2J2IuEfXQiGLR6ApCVmMLhtCMNzBxg63STnCu+5:fvP230hvilY13dIxnGLR6mCF0MNzB+6H

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.udla
offline_id
qwVQoIsE2xLety0oNWloOilSDuIBXJGK86LM3ot1
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-fnn5kv33Vv 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: 0435JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/4176-2-0x00000000021B0000-0x00000000022CB000-memory.dmp	family_djvu
behavioral2/memory/4648-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4648-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4648-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4648-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4648-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/968-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/968-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/968-23-0x0000000000400000-0x0000000000537000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3672	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d360b57e-7699-46c3-bc74-0c155a814b57\\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe\" --AutoStart"	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.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
6	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4176 set thread context of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4700 set thread context of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.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
1232	968	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	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4648	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe
4648	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4176 wrote to memory of 4648	4176	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	83
PID 4648 wrote to memory of 3672	4648	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	84
PID 4648 wrote to memory of 3672	4648	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	84
PID 4648 wrote to memory of 3672	4648	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	84
PID 4648 wrote to memory of 4700	4648	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	85
PID 4648 wrote to memory of 4700	4648	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	85
PID 4648 wrote to memory of 4700	4648	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	85
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87
PID 4700 wrote to memory of 968	4700	JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.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:4648
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d360b57e-7699-46c3-bc74-0c155a814b57" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3672
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4700
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:968
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 568
        5⤵
        Program crash
        
        PID:1232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 968 -ip 968
1⤵
PID:4940

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\d360b57e-7699-46c3-bc74-0c155a814b57\JaffaCakes118_55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b.exe

Filesize
767KB

MD5
a7bf7a2dc43fb14168aedaa3d5b38607

SHA1
f02794710dce594ba39b80adf294e196ae17d43a

SHA256
55b3e65fe867b59909cad49935159a38a781d79b2200231b6ee5713c5ae9cd4b

SHA512
158cae02b822708336bc9084ec5c23fdb6c15851bbef355acdd26e4e46ddbf46241df5aaba62b554948f0041c3bdbab8d3d020f2860358cee06909e960e79fee

Download Submit
memory/968-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/968-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/968-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4176-2-0x00000000021B0000-0x00000000022CB000-memory.dmp

Filesize
1.1MB

Download
memory/4176-1-0x00000000006D0000-0x000000000076F000-memory.dmp

Filesize
636KB

Download
memory/4648-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4648-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4648-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4648-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4648-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4700-19-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4700-22-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads