djvu | aad0854fb6d2fa53eca336eeaca4b6fbe3c7a0b038b992e52bc0623eb8f7ae2f

General

Target

da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe
Size

782KB
MD5

da2ce64532fe32372e34458b02c0e032
SHA1

0f5cc19834f2dcead03d3e62fa39a26c3772b04a
SHA256

aad0854fb6d2fa53eca336eeaca4b6fbe3c7a0b038b992e52bc0623eb8f7ae2f
SHA512

9e436a1ed1a2c1a9833831c661c3f9e741f760251c6ab4a02b59c2dac4ae5b57ac0bf9395aac63c27f24cf1230d72093f9c413a0e16ba323f0714d22870d589e
SSDEEP

24576:ouaEEXz/tVsSAo7xUv9J1UY6BRvcXzrX/I/i+:oXPhVsSAeGVJZ6BOD7O

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://securebiz.org/fhsgtsspen6/get.php

Attributes

extension
.tisc
offline_id
uFHwN7bjwCkJEeUg8JHISzLqrwudidH8XsPzHDt1
payload_url
http://znpst.top/dl/build2.exe

http://securebiz.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-1JwFK5rT39 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: 0336gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/3524-2-0x0000000000C40000-0x0000000000D5B000-memory.dmp	family_djvu
behavioral2/memory/388-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/388-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1736-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1736-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1736-25-0x0000000000400000-0x0000000000537000-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	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4004	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\\9117c201-09cd-48d9-a932-80b26015d249\\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe\" --AutoStart"	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.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 3524 set thread context of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 1692 set thread context of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.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
4588	1736	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	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
388	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe
388	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 3524 wrote to memory of 388	3524	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	83
PID 388 wrote to memory of 4004	388	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	84
PID 388 wrote to memory of 4004	388	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	84
PID 388 wrote to memory of 4004	388	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	84
PID 388 wrote to memory of 1692	388	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	85
PID 388 wrote to memory of 1692	388	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	85
PID 388 wrote to memory of 1692	388	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	85
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87
PID 1692 wrote to memory of 1736	1692	da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3524
- C:\Users\Admin\AppData\Local\Temp\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.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:388
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9117c201-09cd-48d9-a932-80b26015d249" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4004
- - C:\Users\Admin\AppData\Local\Temp\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1692
  - - C:\Users\Admin\AppData\Local\Temp\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:1736
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 572
        5⤵
        Program crash
        
        PID:4588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1736 -ip 1736
1⤵
PID:3960

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\9117c201-09cd-48d9-a932-80b26015d249\da2ce64532fe32372e34458b02c0e032_JaffaCakes118.exe

Filesize
782KB

MD5
da2ce64532fe32372e34458b02c0e032

SHA1
0f5cc19834f2dcead03d3e62fa39a26c3772b04a

SHA256
aad0854fb6d2fa53eca336eeaca4b6fbe3c7a0b038b992e52bc0623eb8f7ae2f

SHA512
9e436a1ed1a2c1a9833831c661c3f9e741f760251c6ab4a02b59c2dac4ae5b57ac0bf9395aac63c27f24cf1230d72093f9c413a0e16ba323f0714d22870d589e

Download Submit
memory/388-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/388-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1692-21-0x0000000000400000-0x00000000008F3000-memory.dmp

Filesize
4.9MB

Download
memory/1692-23-0x0000000000400000-0x00000000008F3000-memory.dmp

Filesize
4.9MB

Download
memory/1736-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1736-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1736-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3524-1-0x0000000000B90000-0x0000000000C2D000-memory.dmp

Filesize
628KB

Download
memory/3524-2-0x0000000000C40000-0x0000000000D5B000-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