djvu | 820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825

General

Target

JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe
Size

841KB
MD5

f59536af89a95b07bc4bd9c7aa019504
SHA1

0aace665e5d45920b4933cfd57ac2679af408469
SHA256

820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825
SHA512

e284d1b2a27e81ec4072d820d759210bbad2135d0a43e49cb31bdb7e197a536bc7c6727d0257ca301a7ce36de2847cb0d755c47adac04dee322292e6093faa88
SSDEEP

12288:RJv7XUhLHrv2Tdj4CVLxmiN7/VD8xiA8h32VZSyEnhZ4B6tHkO2unnwQ7U:XwhLLvqtR3tdFiiACY6TtHxw

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
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/4932-2-0x0000000002290000-0x00000000023AB000-memory.dmp	family_djvu
behavioral2/memory/3896-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3896-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3896-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3896-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3896-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4012-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4012-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4012-21-0x0000000000400000-0x0000000000537000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4852	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\\04e77945-4bd9-4274-bab7-1fcec999eb7f\\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe\" --AutoStart"	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.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
12	api.2ip.ua
13	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4932 set thread context of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4892 set thread context of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86

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
4948	4012	WerFault.exe	86

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_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3896	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe
3896	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 4932 wrote to memory of 3896	4932	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	82
PID 3896 wrote to memory of 4852	3896	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	83
PID 3896 wrote to memory of 4852	3896	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	83
PID 3896 wrote to memory of 4852	3896	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	83
PID 3896 wrote to memory of 4892	3896	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	84
PID 3896 wrote to memory of 4892	3896	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	84
PID 3896 wrote to memory of 4892	3896	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	84
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86
PID 4892 wrote to memory of 4012	4892	JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.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:3896
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\04e77945-4bd9-4274-bab7-1fcec999eb7f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4852
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4892
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:4012
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4012 -s 568
        5⤵
        Program crash
        
        PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4012 -ip 4012
1⤵
PID:4028

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\04e77945-4bd9-4274-bab7-1fcec999eb7f\JaffaCakes118_820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825.exe

Filesize
841KB

MD5
f59536af89a95b07bc4bd9c7aa019504

SHA1
0aace665e5d45920b4933cfd57ac2679af408469

SHA256
820062b9391910d56daa3fabb84cbc989fcb777d0f0eb29bdb7c84ce3d47f825

SHA512
e284d1b2a27e81ec4072d820d759210bbad2135d0a43e49cb31bdb7e197a536bc7c6727d0257ca301a7ce36de2847cb0d755c47adac04dee322292e6093faa88

Download Submit
memory/3896-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3896-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3896-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3896-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3896-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4012-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4012-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4012-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4892-19-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/4892-25-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download
memory/4932-1-0x0000000000670000-0x0000000000702000-memory.dmp

Filesize
584KB

Download
memory/4932-2-0x0000000002290000-0x00000000023AB000-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