djvu | 4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70

Analysis

max time kernel
148s
max time network
135s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 20:40

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General

Target

JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
Size

837KB
MD5

1f2621ad5f259c41db07928b3d0d44bf
SHA1

d3dfd87a896838d453948449fe8cb49315ecb5f8
SHA256

4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70
SHA512

4b426e51c7bf011fe5314f9cd70756b67406a05da149a792746b4261c11081dd9b138672a1ca165242411592dec9434f58fcff24c26032f513b895fd0cc243d4
SSDEEP

24576:4a5mcUmcYxofu+QjmUtnZgxLgvQUH/C9yMvKq:4a5TBUDUh6xLaYyf

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.tuid
offline_id
LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1
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-FglTTmgzZT 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: 0440tOjkfd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/1324-2-0x0000000000520000-0x000000000063B000-memory.dmp	family_djvu
behavioral1/memory/1720-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1720-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1720-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1720-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2820	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d260aff8-b585-4472-8577-4a77d34fdb8a\\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe\" --AutoStart"	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.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
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1324 set thread context of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 2996 set thread context of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
2728	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
2728	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1324 wrote to memory of 1720	1324	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	30
PID 1720 wrote to memory of 2820	1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	32
PID 1720 wrote to memory of 2820	1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	32
PID 1720 wrote to memory of 2820	1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	32
PID 1720 wrote to memory of 2820	1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	32
PID 1720 wrote to memory of 2996	1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	33
PID 1720 wrote to memory of 2996	1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	33
PID 1720 wrote to memory of 2996	1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	33
PID 1720 wrote to memory of 2996	1720	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	33
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34
PID 2996 wrote to memory of 2728	2996	JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1324
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d260aff8-b585-4472-8577-4a77d34fdb8a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2820
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2996
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2728

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

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
c32141bf6fedb4639a90c934d18f99e5

SHA1
70fe8b10737600f21d7006a8447ea0cb43bba7b2

SHA256
7dacbebda731c1c938cd3c212276751ba25b0be199f6c24ca7eda89debfb387b

SHA512
d1b66a53511ab744859690be2c63da6d618c53deb4eeb1528df88c6cf68221d2c1ad94bd9b092eabc5aedd5abfcdf9962feaf6b862ec8a378faca145e24aebc6

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

Filesize
170B

MD5
4d2155240fbb1621e0752307a9654f70

SHA1
350a87907afb3382371a5d6951354511f934c352

SHA256
868f94346cfa8bd78190ff4b70c3be2bb5421c7683c45e888a458bd7dae3b73b

SHA512
d7064ca0d4556fe33e693db8bbbd51339f0619bea4ebfcdf7201727ba6deed4ec3189fe22cb5f7e3d80155fe24aeb4ebdaefa6443c96e2ea821e86ee0ca218ff

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabC6E7.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\d260aff8-b585-4472-8577-4a77d34fdb8a\JaffaCakes118_4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70.exe

Filesize
837KB

MD5
1f2621ad5f259c41db07928b3d0d44bf

SHA1
d3dfd87a896838d453948449fe8cb49315ecb5f8

SHA256
4ec2425c50bb5b44d86c0403389a31de338ac53ebdbc184bfd68482bfd13fc70

SHA512
4b426e51c7bf011fe5314f9cd70756b67406a05da149a792746b4261c11081dd9b138672a1ca165242411592dec9434f58fcff24c26032f513b895fd0cc243d4

Download Submit
memory/1324-0-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/1324-1-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/1324-2-0x0000000000520000-0x000000000063B000-memory.dmp

Filesize
1.1MB

Download
memory/1324-7-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/1720-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1720-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1720-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1720-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1720-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2996-34-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/2996-28-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/2996-27-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download