djvu | 9c3d3de315b2566b6cd5d8aad755a32db659b04edc453a0ae71c8e3024a6fe02

Analysis

max time kernel
142s
max time network
130s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 03:00

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General

Target

98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
Size

769KB
MD5

b3066f0d8b352cd9e5c18e19118834aa
SHA1

7cfcb6b5848aac682605cc596f52121327a11c57
SHA256

98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f
SHA512

f1967c20b250b234e15682ae6c92645cc24460a01a8db0268e94b092405df54ed56ccac1bc7f97ef71fe549f7698e1e3d6a0d9c6b5cb7071f5f4692dedcd990b
SSDEEP

12288:S6dP8h91FluejiQt20WPEgr3RF27GZaIaXRjqtC/7FNYSY1aO1NiB7gUnAgW:S+A/sebtRWnTzc9NXRetMFKF1aO/mDq

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/test1/get.php

Attributes

extension
.tuid
offline_id
LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1
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-FglTTmgzZT 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: 0440tOjkfd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2076-2-0x0000000001DA0000-0x0000000001EBB000-memory.dmp	family_djvu
behavioral1/memory/2792-5-0x0000000000400000-0x0000000000537000-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/2792-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-68-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2620-70-0x0000000000400000-0x0000000000537000-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
2740	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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5ab11086-4156-40a1-9553-3d76084f6f5f\\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe\" --AutoStart"	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.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 2076 set thread context of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2768 set thread context of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.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	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
2620	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
2620	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2076 wrote to memory of 2792	2076	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	30
PID 2792 wrote to memory of 2740	2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	31
PID 2792 wrote to memory of 2740	2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	31
PID 2792 wrote to memory of 2740	2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	31
PID 2792 wrote to memory of 2740	2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	31
PID 2792 wrote to memory of 2768	2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	32
PID 2792 wrote to memory of 2768	2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	32
PID 2792 wrote to memory of 2768	2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	32
PID 2792 wrote to memory of 2768	2792	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	32
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33
PID 2768 wrote to memory of 2620	2768	98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe	33

C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
"C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
  "C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.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\5ab11086-4156-40a1-9553-3d76084f6f5f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2740
- - C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
    "C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2768
  - - C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe
      "C:\Users\Admin\AppData\Local\Temp\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2620

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
62a4c2e7a5a94572b1eed51a5922be35

SHA1
7e08992ab790c716ddb8d277838091564c8e0194

SHA256
22063c3d23d71d6cd176d275e2156060c90f27b1020181016af7844222f221a3

SHA512
4945e83a7637a245ce66f2e2db8b9de6927c9860bddd3b4e89503a3cad15409d66c0c7e78cbc2ce73790d86e2e9d3cf909e13b55e3363cf3fa653cc7c4132e20

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

Filesize
342B

MD5
fb66d92f033f1fb69dc627971c45a1df

SHA1
8ea72b2e52c19a6acf16fe514936164503a9cc25

SHA256
1e25689d00f84c0dd07c96fcf88838a1ee0e480445fcb65cfa5fb0933bbab572

SHA512
0c148cda6c5c43357a55c655a5c1816db337881afb7df958df3fdc572388f5e2ba3e6cb4a87a8268e9dade8227f776e5c5e41a15a3fdcfc6762122246d1ff553

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

Filesize
170B

MD5
e3aff65363001316c61450b4f203fb4c

SHA1
e9b15ebc03f7f2327e2f50a2bc503486b1d5a321

SHA256
8c60d4f48d4baed9f06b4ce3b024977a3fb3052e6d0cef3b61be3eb436c12f35

SHA512
d1dce58843468390a2558e21beeb0ee45a73d37f09e0b6331241af78a72adec059e6d893a6c0cbc51b88457208f934f0faa60e56db80e8a3d0522e6c5f49e26c

Download Submit
C:\Users\Admin\AppData\Local\5ab11086-4156-40a1-9553-3d76084f6f5f\98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f.exe

Filesize
769KB

MD5
b3066f0d8b352cd9e5c18e19118834aa

SHA1
7cfcb6b5848aac682605cc596f52121327a11c57

SHA256
98ad8fb18714111b504cec9ca6a95f77520ad92a8ee331dc562a86b53f53aa2f

SHA512
f1967c20b250b234e15682ae6c92645cc24460a01a8db0268e94b092405df54ed56ccac1bc7f97ef71fe549f7698e1e3d6a0d9c6b5cb7071f5f4692dedcd990b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab339E.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2076-1-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2076-2-0x0000000001DA0000-0x0000000001EBB000-memory.dmp

Filesize
1.1MB

Download
memory/2076-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2076-7-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2620-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-30-0x00000000002D0000-0x0000000000362000-memory.dmp

Filesize
584KB

Download
memory/2768-31-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/2768-36-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/2792-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2792-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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

Filesize
1.2MB

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

Filesize
1.2MB

Download
memory/2792-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download