djvu | 7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70

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, 05:05

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General

Target

JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
Size

761KB
MD5

00fdc50a5812e1dfe7bf314e81b86de5
SHA1

e57d21a00c4af2ddfbb7b26d607076a7853e2b7a
SHA256

7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70
SHA512

12a468c1c072c38e8d37d77449491bd190d73af24d0109f271ec4ae93a25623190c756df29b30d0433812180200c549f3e17e6e7346fda015d2ab0ee4bea0e34
SSDEEP

12288:xYHgevleClc4TlC9i05w3+zCKc3eTlfbeevTYCPjcgemwKVA:c9vsClhlwb5pCluR6mT7cge8

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/fhsgtsspen6/get.php

Attributes

extension
.dmay
offline_id
Xe4NOamOTHZrARTiL9dfVzAylFrEWLGGbr2dngt1
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-FT7BNVbXC9 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: 0458JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/1916-2-0x0000000001E30000-0x0000000001F4B000-memory.dmp	family_djvu
behavioral1/memory/2188-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2188-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2188-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2188-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2584-67-0x0000000000400000-0x0000000000537000-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
2912	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\\ef417a62-fc3d-41a3-833d-07cce3d4a147\\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe\" --AutoStart"	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.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 1916 set thread context of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 2804 set thread context of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35

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_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
2584	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
2584	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 1916 wrote to memory of 2188	1916	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	31
PID 2188 wrote to memory of 2912	2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	33
PID 2188 wrote to memory of 2912	2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	33
PID 2188 wrote to memory of 2912	2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	33
PID 2188 wrote to memory of 2912	2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	33
PID 2188 wrote to memory of 2804	2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	34
PID 2188 wrote to memory of 2804	2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	34
PID 2188 wrote to memory of 2804	2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	34
PID 2188 wrote to memory of 2804	2188	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	34
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35
PID 2804 wrote to memory of 2584	2804	JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe	35

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\ef417a62-fc3d-41a3-833d-07cce3d4a147" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2912
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2804
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2584

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
2b908a7508ceb074f22ace3f77349e06

SHA1
64bf176de7ad516954cf7b793b0763f8c104facf

SHA256
9d0e69781da4cf20b1d6fccd89fa544e5505311085791b1ca9285d4b2fae9cca

SHA512
116e3315cdf07af6e96fb219b38f1ad647efcedf698548db929e5a2e95cf0ad19cf23ef8a4a5576e342cf9a2e64affee78f3fbf88c19b19d844b3fa7196e0c91

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

Filesize
170B

MD5
445914a42dd771eb9c144e36ca1719d8

SHA1
b3467dccc79dd498e96f033a8d5e0920fb121f1c

SHA256
0367465e59ff76048088e1b6bd4f80d320fa4e97575c38cf6c9a1aebab3254ee

SHA512
e6ab8bbd9b2799003acc010768abe73e4c7991613037ea78f652fd13c9570afea63b57ee82fba8a6a74a42106c7e8e1e5927dcd951c95c33253650d8f2c373ce

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabFFF1.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\ef417a62-fc3d-41a3-833d-07cce3d4a147\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe

Filesize
761KB

MD5
00fdc50a5812e1dfe7bf314e81b86de5

SHA1
e57d21a00c4af2ddfbb7b26d607076a7853e2b7a

SHA256
7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70

SHA512
12a468c1c072c38e8d37d77449491bd190d73af24d0109f271ec4ae93a25623190c756df29b30d0433812180200c549f3e17e6e7346fda015d2ab0ee4bea0e34

Download Submit
memory/1916-1-0x0000000000280000-0x0000000000311000-memory.dmp

Filesize
580KB

Download
memory/1916-2-0x0000000001E30000-0x0000000001F4B000-memory.dmp

Filesize
1.1MB

Download
memory/1916-0-0x0000000000280000-0x0000000000311000-memory.dmp

Filesize
580KB

Download
memory/1916-7-0x0000000000280000-0x0000000000311000-memory.dmp

Filesize
580KB

Download
memory/2188-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2188-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2188-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2188-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2188-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2584-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2584-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2804-34-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2804-29-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/2804-28-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download