djvu | bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f

Analysis

max time kernel
145s
max time network
132s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-12-2024 01:32

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General

Target

JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
Size

847KB
MD5

1ae89d537153b31ef5b45d4f53912bd9
SHA1

93783cba0bd7805b1120215c309960fc8a2a330f
SHA256

bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f
SHA512

5084f9ef5eec836f64bc6e2991b7b5fa1986f4384f9dc1a8eb11aaafd94be19333356993f7e3f7bbd5d4b697e6991b761be8f4f052b13f27b014bfa7bc667b79
SSDEEP

12288:FFudg7PYA+gbrKcHcEtrnqIp0pGIv0QlZSFvi/xsn5lXICunnwRPd:zNPYAv5trJY0QlZSAolYwR

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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
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-fnn5kv33Vv 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: 0435JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2788-2-0x0000000001F30000-0x000000000204B000-memory.dmp	family_djvu
behavioral1/memory/2924-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2924-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2924-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2924-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-68-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2328-70-0x0000000000400000-0x0000000000537000-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
2568	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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\961a1765-0343-4a95-ad42-14e3d2c7d434\\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe\" --AutoStart"	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2788 set thread context of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2628 set thread context of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.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_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
2328	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
2328	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2788 wrote to memory of 2924	2788	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	31
PID 2924 wrote to memory of 2568	2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	32
PID 2924 wrote to memory of 2568	2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	32
PID 2924 wrote to memory of 2568	2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	32
PID 2924 wrote to memory of 2568	2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	32
PID 2924 wrote to memory of 2628	2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	33
PID 2924 wrote to memory of 2628	2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	33
PID 2924 wrote to memory of 2628	2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	33
PID 2924 wrote to memory of 2628	2924	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	33
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34
PID 2628 wrote to memory of 2328	2628	JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2924
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\961a1765-0343-4a95-ad42-14e3d2c7d434" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2568
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2628
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2328

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
3a38f411866ee313d7f67d98d707d4cc

SHA1
e4ec411b7a75a120d1cf6ff9221214e97e30c778

SHA256
3af5ad65710efc63b22207c8373ce0bb1e3f427721db330987337c1e9bff0d13

SHA512
b43535d62213bd4acf616082fecf3a6d7b538f4ec5b09c12ba203e292e56f3b38f97331646b29909fcc19514cb75f04e91fdcafed75d7c973f452adad75816e4

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
f34751c3d9314a72430e13fde182a356

SHA1
9e688a9f6c8a79f5012ed67e6f1f60b8fc703784

SHA256
32388d457bc71dea7401608f6d0182bb5c774c4281007452ad451a37dcdf7719

SHA512
6fa648ce70461a1bcbceddb947c35c588d30196e208950fe6db4435e4022945a2bbb23dcdab772166523337565bd878c56f9773ec5b08c5a073e1ff89cb5f85e

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

Filesize
170B

MD5
c949155ff05dc7e0af355c40a17ca38a

SHA1
708f12c145574a9cf0a9167c1d2694dc50086398

SHA256
587b108740f788f094d97a859b56b6b081fdea17b301ec6833db6a01270b1289

SHA512
6d3be9936ce5dc18b056955a6c699f90e1d7bb5f2625b81bcc433c224de27d214fde9b733ce57dd7609ff0e7fa22a44ab903f83d904b50826aede6d22f77ff8f

Download Submit
C:\Users\Admin\AppData\Local\961a1765-0343-4a95-ad42-14e3d2c7d434\JaffaCakes118_bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f.exe

Filesize
847KB

MD5
1ae89d537153b31ef5b45d4f53912bd9

SHA1
93783cba0bd7805b1120215c309960fc8a2a330f

SHA256
bf72acd15dc41b8298358affbaba1e99b30cfef383b34e665870ac29ce27015f

SHA512
5084f9ef5eec836f64bc6e2991b7b5fa1986f4384f9dc1a8eb11aaafd94be19333356993f7e3f7bbd5d4b697e6991b761be8f4f052b13f27b014bfa7bc667b79

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabFC3A.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2328-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2328-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2628-35-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2628-31-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2628-30-0x0000000001D60000-0x0000000001DF2000-memory.dmp

Filesize
584KB

Download
memory/2788-2-0x0000000001F30000-0x000000000204B000-memory.dmp

Filesize
1.1MB

Download
memory/2788-1-0x0000000000310000-0x00000000003A2000-memory.dmp

Filesize
584KB

Download
memory/2788-0-0x0000000000310000-0x00000000003A2000-memory.dmp

Filesize
584KB

Download
memory/2788-6-0x0000000000310000-0x00000000003A2000-memory.dmp

Filesize
584KB

Download
memory/2924-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2924-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2924-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2924-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2924-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download