djvu | ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437

Analysis

max time kernel
142s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 05:25

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General

Target

JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
Size

768KB
MD5

63710d0aaf89298af47b923a6f5fd44b
SHA1

e92e69998126855eb1ea95eac54dcceea55df928
SHA256

ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437
SHA512

df222d9f140da27f5e29e2023c29d6ca8ac3489d52f8ac211da3be858f4fd66cf9b43968c54ab19a82eb507c3fba31e6086eb55b0fbc9ec0751c728d850c16bc
SSDEEP

12288:CHvzsuOeL2yN+eVJXqvKjMeY97dbKzBTar18Dq/HdHRk40AdrFyUuG0PqpyLt:CsuOcHCvKjMNBWNyHmBkuw4

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.nuhb
offline_id
PfLhykvDxmCghCq8peuxBtQ3c0QBuANi8WUkuet1
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-c565B1ILoZ 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: 0453Jbdio

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2736-2-0x0000000001E20000-0x0000000001F3B000-memory.dmp	family_djvu
behavioral1/memory/2968-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2968-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2968-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2968-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-67-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1588-68-0x0000000000400000-0x0000000000537000-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
2572	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1e9edf76-a5ef-4bb8-a3d7-c115eaa22cfa\\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe\" --AutoStart"	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.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 2736 set thread context of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2652 set thread context of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33

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_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
1588	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
1588	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2736 wrote to memory of 2968	2736	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	30
PID 2968 wrote to memory of 2572	2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	31
PID 2968 wrote to memory of 2572	2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	31
PID 2968 wrote to memory of 2572	2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	31
PID 2968 wrote to memory of 2572	2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	31
PID 2968 wrote to memory of 2652	2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	32
PID 2968 wrote to memory of 2652	2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	32
PID 2968 wrote to memory of 2652	2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	32
PID 2968 wrote to memory of 2652	2968	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	32
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33
PID 2652 wrote to memory of 1588	2652	JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2968
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\1e9edf76-a5ef-4bb8-a3d7-c115eaa22cfa" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2572
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2652
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1588

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
c8f8c77d96975f76c024f017bdad2776

SHA1
2e0dceb9ce145f84e802784f0710d9fc66c0ee78

SHA256
f075551965fc135be1871dfcf5823c407d2e3cf24dfc5ce629b215af12e8b7e1

SHA512
9447e2ebd0c602d7c4584a9063ae192286df963f864d1d49c18b40eaccd28ae0b335edc3e97020f2b7a00b187478d3346ccd4deb0f32cc1a3884f6af79b811e5

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

Filesize
342B

MD5
761460d81fb79e22f399357d372d8bd2

SHA1
4f3edd462565668459a37f9b73d3866218ec47a3

SHA256
28dd9e60a57b510ed301d09192e1ef1545fd4cdf858e37ef55e092a1cd51b1f0

SHA512
2d5f941cc3fdfaff73de594f39fb2ea2a958ffbf2cc1d084b24bd7a8f76896ae1e1944768e587730037fc6b286efd65ef9e5db6ad3e9967890b55c2ec16f4e69

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

Filesize
170B

MD5
b84e9b617d707c11c188286241491fac

SHA1
c8b4705409c7396348ace1eebae49dda2312966c

SHA256
751dd2429af4604472f9cd11997a2edc52c1464cc41bf1020cbdad0600e1eec1

SHA512
d807524a793dad3b22a4962e031b9b7e478a1553e0da3d57a6c295432bd59d53feccb0fcaa05a86ef98846c1a4825e54a8090792c9596af8bf2990e182b80e5c

Download Submit
C:\Users\Admin\AppData\Local\1e9edf76-a5ef-4bb8-a3d7-c115eaa22cfa\JaffaCakes118_ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437.exe

Filesize
768KB

MD5
63710d0aaf89298af47b923a6f5fd44b

SHA1
e92e69998126855eb1ea95eac54dcceea55df928

SHA256
ca8dbe608ea69a368a18072c6ce017d616ea6f493dccdde7ebe1fd8a48f9c437

SHA512
df222d9f140da27f5e29e2023c29d6ca8ac3489d52f8ac211da3be858f4fd66cf9b43968c54ab19a82eb507c3fba31e6086eb55b0fbc9ec0751c728d850c16bc

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab6529.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1588-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1588-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1588-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1588-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1588-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1588-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1588-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1588-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1588-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1588-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-36-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/2652-31-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/2652-30-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2736-2-0x0000000001E20000-0x0000000001F3B000-memory.dmp

Filesize
1.1MB

Download
memory/2736-1-0x0000000001D80000-0x0000000001E12000-memory.dmp

Filesize
584KB

Download
memory/2736-0-0x0000000001D80000-0x0000000001E12000-memory.dmp

Filesize
584KB

Download
memory/2736-7-0x0000000001D80000-0x0000000001E12000-memory.dmp

Filesize
584KB

Download
memory/2968-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2968-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2968-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2968-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2968-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download