djvu | 79fed2e5e69917f98a8b508a772a6bd95a3f0ab84d27998e9e23f66db1aae06f

Analysis

max time kernel
145s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-10-2024 18:39

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General

Target

4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
Size

832KB
MD5

4173146820be8f17a7e9844eb5ece68e
SHA1

fb3d4d36f0cfa19c30bb45459aec670168122a6f
SHA256

79fed2e5e69917f98a8b508a772a6bd95a3f0ab84d27998e9e23f66db1aae06f
SHA512

3abf44530e68c51415ad75afcd391bb5fb272671718a799b86b99226bb124a6c86ccfd087b4bb477f4425ff50d66abdf0cb562cced914030b9b853b44810f999
SSDEEP

24576:HGZEEavMjfaZpl08b0PJzxWugguPodMdu95nuH:m4vMjfgpSNPJzCLPeMdGn

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/fhsgtsspen6/get.php

Attributes

extension
.reqg
offline_id
ioYmb0jtMMtue7xjmkS3WQWGWLR8FTQhb2giQtt1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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-jTbSQT8ApY 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: 0324gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/720-2-0x0000000000E00000-0x0000000000F1B000-memory.dmp	family_djvu
behavioral2/memory/3352-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3352-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3352-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3352-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3352-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4776-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4776-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4776-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4288-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4288-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4288-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4288-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4288-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4288-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4288-359-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Renames multiple (154) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
4288	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2144	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\80043b8b-53ef-4fef-a9e7-4fa4a50e212d\\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe\" --AutoStart"	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
42	api.2ip.ua
13	api.2ip.ua
14	api.2ip.ua

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 720 set thread context of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 4488 set thread context of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4764 set thread context of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98

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
3156	4776	WerFault.exe	90

System Location Discovery: System Language Discovery 1 TTPs 7 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	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3352	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
3352	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
4288	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
4288	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
4288	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
4288	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 720 wrote to memory of 3352	720	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	86
PID 3352 wrote to memory of 2144	3352	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	87
PID 3352 wrote to memory of 2144	3352	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	87
PID 3352 wrote to memory of 2144	3352	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	87
PID 3352 wrote to memory of 4488	3352	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	88
PID 3352 wrote to memory of 4488	3352	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	88
PID 3352 wrote to memory of 4488	3352	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	88
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4488 wrote to memory of 4776	4488	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	90
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98
PID 4764 wrote to memory of 4288	4764	4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe	98

C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:720
- C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_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:3352
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\80043b8b-53ef-4fef-a9e7-4fa4a50e212d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2144
- - C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4488
  - - C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:4776
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4776 -s 568
        5⤵
        Program crash
        
        PID:3156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4776 -ip 4776
1⤵
PID:4932

C:\Users\Admin\AppData\Local\80043b8b-53ef-4fef-a9e7-4fa4a50e212d\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
C:\Users\Admin\AppData\Local\80043b8b-53ef-4fef-a9e7-4fa4a50e212d\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe --Task
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Users\Admin\AppData\Local\80043b8b-53ef-4fef-a9e7-4fa4a50e212d\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\80043b8b-53ef-4fef-a9e7-4fa4a50e212d\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe --Task
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
d551a932ffefb67ae9c03a08442e362d

SHA1
6bc8b08f5c568775d63cae13a97de351504d1c0b

SHA256
03d04a6a2cdc6320f1cf10817dc5a012a5ba38afe51f90a31daa710bba22b513

SHA512
cbfa76d99c2dd2f8c441ad0909e4d5ca827eab41c08d7e09c371937e4bc2ff89ef903af4225786af68e48346c3a65210e4876ae872f824ff03dfd65b0be5a129

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
5dbd9743944e9350d44ab772805fc7d0

SHA1
e77f48b55ace14a3a4b1b50f1a50a0321ddce92f

SHA256
8d1d0921d16d28a019383c92260e80dbb0858b017b4750864a8025bb23d9607e

SHA512
0c77b6b5a102f2fd341ccfa680c13ffe54b4219483afe53e3049347ee180f1483f5d41d469842a9ef2f3ac3f33217fce576745abdaf2b287209c0f7c20deb59c

Download Submit
C:\Users\Admin\AppData\Local\80043b8b-53ef-4fef-a9e7-4fa4a50e212d\4173146820be8f17a7e9844eb5ece68e_JaffaCakes118.exe

Filesize
832KB

MD5
4173146820be8f17a7e9844eb5ece68e

SHA1
fb3d4d36f0cfa19c30bb45459aec670168122a6f

SHA256
79fed2e5e69917f98a8b508a772a6bd95a3f0ab84d27998e9e23f66db1aae06f

SHA512
3abf44530e68c51415ad75afcd391bb5fb272671718a799b86b99226bb124a6c86ccfd087b4bb477f4425ff50d66abdf0cb562cced914030b9b853b44810f999

Download Submit
memory/720-2-0x0000000000E00000-0x0000000000F1B000-memory.dmp

Filesize
1.1MB

Download
memory/720-1-0x0000000000C50000-0x0000000000CF1000-memory.dmp

Filesize
644KB

Download
memory/3352-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3352-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3352-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3352-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3352-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4288-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4288-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4288-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4288-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4288-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4288-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4288-359-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4488-25-0x0000000000400000-0x0000000000987000-memory.dmp

Filesize
5.5MB

Download
memory/4488-29-0x0000000000400000-0x0000000000987000-memory.dmp

Filesize
5.5MB

Download
memory/4776-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4776-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4776-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download