djvu | 71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f

General

Target

JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe
Size

761KB
MD5

509b149290b67586e700eb2007ece40c
SHA1

0844065732f8e76a481f6a3f014b5e0c7136c95f
SHA256

71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f
SHA512

c159e5232669ad6c0bfa8d4548b1f8dec789ded076aa0c4736dea14c5071ecc86a3f89e913cfc16abcd76d50b17081d84bdcad3615664a83fa8d1eb44bfc335a
SSDEEP

12288:SYHmVgJHqusSCjSxF0/iDz4BjOr80h2wZLyYesqpAPdBm4TNU9NEu:dmVBus1jURDznA0zZWXd4SYu

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.dmay
offline_id
Xe4NOamOTHZrARTiL9dfVzAylFrEWLGGbr2dngt1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/2960-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2960-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2960-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2960-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/856-2-0x00000000023C0000-0x00000000024DB000-memory.dmp	family_djvu
behavioral2/memory/2960-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4860-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4860-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4860-21-0x0000000000400000-0x0000000000537000-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4252	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\00bd8f5c-1706-41aa-b988-fbc35b14ff8a\\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe\" --AutoStart"	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.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
16	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 856 set thread context of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 1936 set thread context of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.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
2644	4860	WerFault.exe

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	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2960	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe
2960	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 856 wrote to memory of 2960	856	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	85
PID 2960 wrote to memory of 4252	2960	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	86
PID 2960 wrote to memory of 4252	2960	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	86
PID 2960 wrote to memory of 4252	2960	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	86
PID 2960 wrote to memory of 1936	2960	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	87
PID 2960 wrote to memory of 1936	2960	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	87
PID 2960 wrote to memory of 1936	2960	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	87
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90
PID 1936 wrote to memory of 4860	1936	JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:856
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.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:2960
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\00bd8f5c-1706-41aa-b988-fbc35b14ff8a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4252
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1936
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:4860
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 584
        5⤵
        Program crash
        
        PID:2644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4860 -ip 4860
1⤵
PID:2884

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\00bd8f5c-1706-41aa-b988-fbc35b14ff8a\JaffaCakes118_71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f.exe

Filesize
761KB

MD5
509b149290b67586e700eb2007ece40c

SHA1
0844065732f8e76a481f6a3f014b5e0c7136c95f

SHA256
71c5602ebc9595def3ac17dbbe21a85622f66cbcbd609725669715ce7c10af2f

SHA512
c159e5232669ad6c0bfa8d4548b1f8dec789ded076aa0c4736dea14c5071ecc86a3f89e913cfc16abcd76d50b17081d84bdcad3615664a83fa8d1eb44bfc335a

Download Submit
memory/856-2-0x00000000023C0000-0x00000000024DB000-memory.dmp

Filesize
1.1MB

Download
memory/856-1-0x0000000002320000-0x00000000023BB000-memory.dmp

Filesize
620KB

Download
memory/1936-25-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1936-19-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2960-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2960-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2960-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2960-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2960-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4860-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4860-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4860-21-0x0000000000400000-0x0000000000537000-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