djvu | 4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840

General

Target

JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe
Size

777KB
MD5

470d4f279031b9fa88031b14b154879d
SHA1

8586537888f1b1cf836b89bf7fcfa1be1ec37380
SHA256

4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840
SHA512

70f86b5fd099fc9d2435d73783c28d9e8b1cc98bdc9bda1af4b233e7a3c4ca0a202a4cfeb85cbf12fa730916a9402be95e3f7274fa0d46673b16df80528d5405
SSDEEP

24576:GF/GiZE0NEsSXkCScf1V32l7+5UcxTxk+vX:G3jNkX1Scf1VSek+vX

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/4680-2-0x0000000002260000-0x000000000237B000-memory.dmp	family_djvu
behavioral2/memory/3944-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3944-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3944-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3944-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3944-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4320-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4320-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4320-27-0x0000000000400000-0x0000000000537000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3036	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\93418dcf-3194-42bd-a730-14d38c4d77c0\\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe\" --AutoStart"	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.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
4	api.2ip.ua
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4680 set thread context of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4776 set thread context of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.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
4116	4320	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_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3944	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe
3944	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 4680 wrote to memory of 3944	4680	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	83
PID 3944 wrote to memory of 3036	3944	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	84
PID 3944 wrote to memory of 3036	3944	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	84
PID 3944 wrote to memory of 3036	3944	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	84
PID 3944 wrote to memory of 4776	3944	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	85
PID 3944 wrote to memory of 4776	3944	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	85
PID 3944 wrote to memory of 4776	3944	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	85
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87
PID 4776 wrote to memory of 4320	4776	JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4680
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.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:3944
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\93418dcf-3194-42bd-a730-14d38c4d77c0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3036
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4776
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:4320
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4320 -s 568
        5⤵
        Program crash
        
        PID:4116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4320 -ip 4320
1⤵
PID:964

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\93418dcf-3194-42bd-a730-14d38c4d77c0\JaffaCakes118_4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840.exe

Filesize
777KB

MD5
470d4f279031b9fa88031b14b154879d

SHA1
8586537888f1b1cf836b89bf7fcfa1be1ec37380

SHA256
4c5b857f6ad86bbdabe31f13aac9e5b3f4754e626540d179186df98f7e3e8840

SHA512
70f86b5fd099fc9d2435d73783c28d9e8b1cc98bdc9bda1af4b233e7a3c4ca0a202a4cfeb85cbf12fa730916a9402be95e3f7274fa0d46673b16df80528d5405

Download Submit
memory/3944-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3944-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3944-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3944-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3944-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4320-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4320-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4320-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4680-2-0x0000000002260000-0x000000000237B000-memory.dmp

Filesize
1.1MB

Download
memory/4680-1-0x0000000000780000-0x000000000081C000-memory.dmp

Filesize
624KB

Download
memory/4776-21-0x0000000000400000-0x00000000004ED000-memory.dmp

Filesize
948KB

Download
memory/4776-24-0x0000000000400000-0x00000000004ED000-memory.dmp

Filesize
948KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads