djvu | 7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1

Analysis

max time kernel
147s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/12/2024, 18:32

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General

Target

JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
Size

725KB
MD5

30230946115d6d82a890e9e725deb161
SHA1

f03ee04320db88871b36dc45ed373fb4e43f0312
SHA256

7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1
SHA512

47c416a43938457c71327d25c28d4afd3ec049990b24e54d4a23d2a8aed1a5d5365556d80b24a2a6e56415c4b96d71392884043a9942952ff695e343c2414d75
SSDEEP

12288:hZtJpi3MRBvcV1d1jcjYVXo6/JUFWFg5vF5w5wm8dU2FI1Ee8U:hZ/plno1/c0VXo6/7ghFFVM

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/268-2-0x0000000001D00000-0x0000000001E1B000-memory.dmp	family_djvu
behavioral1/memory/3008-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3008-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3008-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3008-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2988-67-0x0000000000400000-0x0000000000537000-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
2888	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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\28312ce9-4d56-42af-baa7-0091f5affac2\\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe\" --AutoStart"	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.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 268 set thread context of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 2824 set thread context of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.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_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
2988	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
2988	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 268 wrote to memory of 3008	268	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	31
PID 3008 wrote to memory of 2888	3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	33
PID 3008 wrote to memory of 2888	3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	33
PID 3008 wrote to memory of 2888	3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	33
PID 3008 wrote to memory of 2888	3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	33
PID 3008 wrote to memory of 2824	3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	34
PID 3008 wrote to memory of 2824	3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	34
PID 3008 wrote to memory of 2824	3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	34
PID 3008 wrote to memory of 2824	3008	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	34
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35
PID 2824 wrote to memory of 2988	2824	JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe	35

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:268
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3008
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\28312ce9-4d56-42af-baa7-0091f5affac2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2888
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2824
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2988

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
4da821e0c536d80f849b2a0029751ff6

SHA1
e00963bc964bcdffccab4cc5238c684a66e89df7

SHA256
a166b94540b236eeac96eb8e9f8990cc92b38e645d034106afe5c48cb7d8c704

SHA512
7caa08e912e7f1862e1c71bbe0c7c009ebb0b8a095240cb1e13e6204686a968d835a13cd95e94237cf5d8bc73919a42b6c5fdb625e551d9aaa69bfdcfea94a2f

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

Filesize
170B

MD5
3ddc73e0d788a7df4d1d50860737a5f6

SHA1
1ee9956b7380f1bc10c0ec7aedfbbcaf873519e8

SHA256
107e6d243d04c0932722912c4980f3943638662f86687f7459d45e859e2cbf10

SHA512
33bc7341c211ca96b6a2df9e8f5c92580ff23885c972d2bcf4bc31b9e8a9f1882c08cab1669b93ee06f9ff2b2a383338f2e185fbd488d736177a043a944a393c

Download Submit
C:\Users\Admin\AppData\Local\28312ce9-4d56-42af-baa7-0091f5affac2\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe

Filesize
725KB

MD5
30230946115d6d82a890e9e725deb161

SHA1
f03ee04320db88871b36dc45ed373fb4e43f0312

SHA256
7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1

SHA512
47c416a43938457c71327d25c28d4afd3ec049990b24e54d4a23d2a8aed1a5d5365556d80b24a2a6e56415c4b96d71392884043a9942952ff695e343c2414d75

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabF7F6.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/268-7-0x00000000004C0000-0x0000000000551000-memory.dmp

Filesize
580KB

Download
memory/268-0-0x00000000004C0000-0x0000000000551000-memory.dmp

Filesize
580KB

Download
memory/268-2-0x0000000001D00000-0x0000000001E1B000-memory.dmp

Filesize
1.1MB

Download
memory/268-1-0x00000000004C0000-0x0000000000551000-memory.dmp

Filesize
580KB

Download
memory/2824-34-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/2824-28-0x0000000001CE0000-0x0000000001D71000-memory.dmp

Filesize
580KB

Download
memory/2824-29-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/2988-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2988-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3008-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3008-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3008-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3008-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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memory/3008-27-0x0000000000400000-0x0000000000537000-memory.dmp

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1.2MB

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