djvu | 6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1

General

Target

JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe
Size

770KB
MD5

2158df35900e2a4d4f41e1de55300327
SHA1

6d574428256ab3774dbab19bb51819fcc02f6b13
SHA256

6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1
SHA512

b7c0025a975d4e096a1e3f608f874fb0039049faf43f8a1dc219560ae505ecb49eec40c912245fb1157ee8243023f9a79636918af9f60cbb87801dc8ae8dd38e
SSDEEP

12288:OT4Ml7IXlXCvYhclHw6OrWijG8ckiheT0fhGK3h4zE7TE0Nrn08EVF98+ctJKdNh:6p7nFlH4qijG8fTM/7BNr08ET9sQb4G

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.ghas
offline_id
miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1
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-0SLhZxAjRX 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: 0445JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/4440-2-0x00000000021E0000-0x00000000022FB000-memory.dmp	family_djvu
behavioral2/memory/640-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/640-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/640-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/640-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/640-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3652-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3652-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3652-21-0x0000000000400000-0x0000000000537000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3612	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c5c17a81-af03-4b2b-9b8a-88e3f0c76431\\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe\" --AutoStart"	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.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 4440 set thread context of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 536 set thread context of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89

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
2800	3652	WerFault.exe	89

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_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
640	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe
640	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 4440 wrote to memory of 640	4440	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	84
PID 640 wrote to memory of 3612	640	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	85
PID 640 wrote to memory of 3612	640	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	85
PID 640 wrote to memory of 3612	640	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	85
PID 640 wrote to memory of 536	640	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	86
PID 640 wrote to memory of 536	640	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	86
PID 640 wrote to memory of 536	640	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	86
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89
PID 536 wrote to memory of 3652	536	JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.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:640
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c5c17a81-af03-4b2b-9b8a-88e3f0c76431" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3612
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:536
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:3652
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 568
        5⤵
        Program crash
        
        PID:2800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3652 -ip 3652
1⤵
PID:4900

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\c5c17a81-af03-4b2b-9b8a-88e3f0c76431\JaffaCakes118_6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1.exe

Filesize
770KB

MD5
2158df35900e2a4d4f41e1de55300327

SHA1
6d574428256ab3774dbab19bb51819fcc02f6b13

SHA256
6397718b5684f02c9765ad5921a1f901f678987c8f5f2d02c669354e4915b3c1

SHA512
b7c0025a975d4e096a1e3f608f874fb0039049faf43f8a1dc219560ae505ecb49eec40c912245fb1157ee8243023f9a79636918af9f60cbb87801dc8ae8dd38e

Download Submit
memory/536-25-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/536-19-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/640-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/640-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/640-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/640-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/640-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3652-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3652-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3652-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4440-1-0x0000000000890000-0x0000000000930000-memory.dmp

Filesize
640KB

Download
memory/4440-2-0x00000000021E0000-0x00000000022FB000-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