djvu | 221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63

Analysis

max time kernel
291s
max time network
304s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
09/05/2024, 22:43

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General

Target
221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe
Size 774KB
Sample240509-2nhblaeb69
SHA256 221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63
MD5 df0e4d965201cab9382fa60aa5c6cb88
SHA1 6f80f89e89fab4245b50d29229d247a8aa1eaf99
SHA512 1e6cdd86cc4f3f4e8099e90f156d049b85f654ed29795cf8e6f048560fd7fe76c120b5d24d2bd019ff76653e77c9180491e47fd4c68141ee5b40f0b34d497190
SSDEEP 12288:xL/PQdcVgNPyK0Flb7aKZ2CHxu47rtoELUQztzIkmEIyfZ3Q:xL/PEEbbRxH7JoE1xz1mEFZ3
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test1/get.php

Attributes

extension
.qepi
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.com/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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0867PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral2/memory/3256-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3256-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3256-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-3-0x0000000004880000-0x000000000499B000-memory.dmp	family_djvu
behavioral2/memory/3256-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3256-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2008	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-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\8badb70a-9453-497a-ba51-4aa3cd6a7210\\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe\" --AutoStart"	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.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
11	api.2ip.ua
1	api.2ip.ua
2	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4740 set thread context of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 656 set thread context of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3256	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe
3256	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe
4552	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe
4552	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 4740 wrote to memory of 3256	4740	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	72
PID 3256 wrote to memory of 2008	3256	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	73
PID 3256 wrote to memory of 2008	3256	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	73
PID 3256 wrote to memory of 2008	3256	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	73
PID 3256 wrote to memory of 656	3256	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	74
PID 3256 wrote to memory of 656	3256	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	74
PID 3256 wrote to memory of 656	3256	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	74
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76
PID 656 wrote to memory of 4552	656	221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe	76

C:\Users\Admin\AppData\Local\Temp\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe
"C:\Users\Admin\AppData\Local\Temp\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Users\Admin\AppData\Local\Temp\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe
  "C:\Users\Admin\AppData\Local\Temp\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3256
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\8badb70a-9453-497a-ba51-4aa3cd6a7210" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2008
- - C:\Users\Admin\AppData\Local\Temp\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe
    "C:\Users\Admin\AppData\Local\Temp\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:656
  - - C:\Users\Admin\AppData\Local\Temp\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe
      "C:\Users\Admin\AppData\Local\Temp\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4552

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 b50c616b5c29bd9611ed360a238b6b6c421d0fe3b85df331e4951aefab526b2e
MD5 5857aff0ea0365561d0f06769a04101c
SHA1 0ac570f0ec93618c5849baf94c0a167e4a706a95
SHA512 1863b40407893a4a26beaa7ae4add199676c15b633d59afb4dfd2906328b29497fdddcb0ff01b9ba77ac59c5c55511fa669b0ffd6e02bcfa2d2cc53df62390be
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

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24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 2514ee72f54d89013d1c6f9b78f4997de86cdb66e17997ecb74911896aab2317
MD5 86601a1810f2e79ae1574a131d4dab16
SHA1 e878059c556df52b336567c6d0b9fe1cab29065c
SHA512 a7e4dfe75efb54a6fba76c17385241fadc27e9a87e19684c70fa87d0a135abd7a63f084bb917d4fabc64e5562b243e886ae36aa8a0c54ccc7e2be99383036fd9
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 ff8890a0e6cde56b10a9077aae351754d3455dd3e2bb102826ed42cac59a5d67
MD5 92288d5ce46689445cd9d3ae38c1886f
SHA1 79ac408c0d357b27fc3822ac9f3cc3112f5b47a1
SHA512 eae801494d21a5160fe095ba1009002771292a817b2f0b4f1e5e254e1fc4d4e725fc4fbb7bce3047d2120fff52567cd5fa20f585a803c034af6cf7e0fd6b48f7
MD5 SHA1 SHA512

Submit Download

221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe

Path C:\Users\Admin\AppData\Local\8badb70a-9453-497a-ba51-4aa3cd6a7210\221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63.exe
Size 774KB
SHA256 221d3ff3f3accdb860f57c6e33da6a06ee38728a09855410c3e14df233053d63
MD5 df0e4d965201cab9382fa60aa5c6cb88
SHA1 6f80f89e89fab4245b50d29229d247a8aa1eaf99
SHA512 1e6cdd86cc4f3f4e8099e90f156d049b85f654ed29795cf8e6f048560fd7fe76c120b5d24d2bd019ff76653e77c9180491e47fd4c68141ee5b40f0b34d497190
SSDEEP 12288:xL/PQdcVgNPyK0Flb7aKZ2CHxu47rtoELUQztzIkmEIyfZ3Q:xL/PEEbbRxH7JoE1xz1mEFZ3
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3256-2-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3256-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3256-19-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3256-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3256-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4740-3-0x0000000004880000-0x000000000499B000-memory.dmp

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memory/4740-1-0x0000000003040000-0x00000000030D6000-memory.dmp

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