djvu | c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5

Analysis

max time kernel
148s
max time network
127s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 22:07

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General

Target

JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
Size

839KB
MD5

abad5f90d37af2e9e17e98f24493efc3
SHA1

9af39f17dc61a34e2a76a55461d7bf3b828d9178
SHA256

c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5
SHA512

7fd7e542d923d6cf4217af234429fc4334b84d6017e35e4197e6686348c710990100294ab6bb624ba5212bfbee6082a67ec6cee7759f1268b0462993da2acbe8
SSDEEP

12288:zcPjiCP8J5Fti0y19dG4AEvA3wH8OTygWITW8YRNCT2EwODF3RLgzgHtsw7wXTXB:wrVP8htS19R0wrTFcy2eGgHtTwzB

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/2792-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2528-5-0x0000000001E00000-0x0000000001F1B000-memory.dmp	family_djvu
behavioral1/memory/2792-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2792-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2792-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-71-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-70-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-68-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1224-72-0x0000000000400000-0x0000000000537000-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
2648	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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5594abcd-e24f-4cd8-9808-434fc737443e\\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe\" --AutoStart"	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.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 2528 set thread context of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2772 set thread context of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.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_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
1224	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
1224	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2528 wrote to memory of 2792	2528	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	30
PID 2792 wrote to memory of 2648	2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	32
PID 2792 wrote to memory of 2648	2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	32
PID 2792 wrote to memory of 2648	2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	32
PID 2792 wrote to memory of 2648	2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	32
PID 2792 wrote to memory of 2772	2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	33
PID 2792 wrote to memory of 2772	2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	33
PID 2792 wrote to memory of 2772	2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	33
PID 2792 wrote to memory of 2772	2792	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	33
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34
PID 2772 wrote to memory of 1224	2772	JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\5594abcd-e24f-4cd8-9808-434fc737443e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2648
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2772
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1224

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

Loading Replay Monitor...

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
82d29ee73d762d42f3a0899fc4d9e1f1

SHA1
9ccf7d759289a3421497215b068c5138cdcf6dce

SHA256
af46cfa50e91d49962b8a3bce05488c03feeeb446408029699f29467f35cc86c

SHA512
426554f13cf9fb358b61bd9ea7d4e207388da132fdae8c66516c1cd0266f2c249ccc09e74bb7c7967233a046b65a81272e00d199a890442d1a0780baf2aa3b91

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

Filesize
342B

MD5
7ccefe8424649b2421c5432c1e8a0c18

SHA1
0356ed5c87cbeb7b17204944df380a959ad5df69

SHA256
d5a0b3d2deff031c4df0e7132231048379fe981e7f618b09011c082eec39fdba

SHA512
70cc422709b4ed3829428685ea7eb7b09084a81f14c91fad3eb810ed4971bdf2271855afa67f10f7ad016833157d79d1baf05460511011b9a4b4119f0fe58070

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

Filesize
170B

MD5
14202942dc0cc0d1857b3e2b2bbcb1d6

SHA1
9f70180385949364c65d9908d8c8dac7266dc68a

SHA256
515cfd5dd2fe1b8b2e6dfe879ac02fd3d8a706f8e14aafc5ad7ae4fa02ee39e7

SHA512
104756f477ed7e654865b10d7cf018e9cea176d8c4b702a77d7c464b9513312f925d9d3c5206623ebec775e77f054f168da134f347d82c6cb47d64e9ad38010a

Download Submit
C:\Users\Admin\AppData\Local\5594abcd-e24f-4cd8-9808-434fc737443e\JaffaCakes118_c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5.exe

Filesize
839KB

MD5
abad5f90d37af2e9e17e98f24493efc3

SHA1
9af39f17dc61a34e2a76a55461d7bf3b828d9178

SHA256
c4881301bb814a411edd0336dc4b3a5950d43e907d1d367b6f9c08e1e8ca5db5

SHA512
7fd7e542d923d6cf4217af234429fc4334b84d6017e35e4197e6686348c710990100294ab6bb624ba5212bfbee6082a67ec6cee7759f1268b0462993da2acbe8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab40C8.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1224-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-72-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-71-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2528-5-0x0000000001E00000-0x0000000001F1B000-memory.dmp

Filesize
1.1MB

Download
memory/2528-6-0x0000000000300000-0x0000000000392000-memory.dmp

Filesize
584KB

Download
memory/2528-0-0x0000000000300000-0x0000000000392000-memory.dmp

Filesize
584KB

Download
memory/2528-1-0x0000000000300000-0x0000000000392000-memory.dmp

Filesize
584KB

Download
memory/2772-37-0x0000000000400000-0x00000000004DD000-memory.dmp

Filesize
884KB

Download
memory/2772-33-0x0000000000400000-0x00000000004DD000-memory.dmp

Filesize
884KB

Download
memory/2772-32-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2792-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2792-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2792-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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memory/2792-8-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2792-31-0x0000000000400000-0x0000000000537000-memory.dmp

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1.2MB

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