djvu | 78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe

Analysis

max time kernel
293s
max time network
152s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 23:07

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General

Target

78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
Size

774KB
MD5

5b14f1bfbc29a60b38ba51486799d5f5
SHA1

cf0e44b5e5368667d47b13d8e88497343779d20f
SHA256

78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe
SHA512

acb6f8cf49827a02da12897eacf5bfadd484f80f1c199e069c61a267a2e7dd8c8126250adbf9658741c23f3ae0d4b44b376426b3f1345bec4a5db3170e7008b8
SSDEEP

12288:a7G68NrNixvp1l9t2tEULNc3RYVu2ETIT35l0td5KZ6YHwDDk:a7G5gx7lWtNLNcZ2E9oZlED

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test2/get.php

Attributes

extension
.qehu
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: 0868PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 13 IoCs

resource	yara_rule
behavioral1/memory/2964-2-0x0000000004480000-0x000000000459B000-memory.dmp	family_djvu
behavioral1/memory/1624-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1624-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1624-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1624-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2812-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2812-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2812-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2812-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2812-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2812-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2812-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2812-54-0x0000000000400000-0x0000000000537000-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
2808	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-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\14dc87a6-9daf-4c78-bd85-f907d124adb7\\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe\" --AutoStart"	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.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 2964 set thread context of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2540 set thread context of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1624	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
2812	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
2812	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 2964 wrote to memory of 1624	2964	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	28
PID 1624 wrote to memory of 2808	1624	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	29
PID 1624 wrote to memory of 2808	1624	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	29
PID 1624 wrote to memory of 2808	1624	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	29
PID 1624 wrote to memory of 2808	1624	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	29
PID 1624 wrote to memory of 2540	1624	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	30
PID 1624 wrote to memory of 2540	1624	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	30
PID 1624 wrote to memory of 2540	1624	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	30
PID 1624 wrote to memory of 2540	1624	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	30
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31
PID 2540 wrote to memory of 2812	2540	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	31

C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
"C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
  "C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\14dc87a6-9daf-4c78-bd85-f907d124adb7" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2808
- - C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
    "C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2540
  - - C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
      "C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2812

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

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
b6e71adf7324685d8f60c97bdb99f892

SHA1
ac45dd58c3dfb5d68ffdbc27817f1e5ad5720830

SHA256
40a181e9a8b85b862afc89a604eb290be3b5cd68937feb9ccfc467d3589e8e5c

SHA512
f864a712e300632059c0678ff5f54412fc7f7a1db02e469bcdc77be452886b55cd3d08ff51076278d1a21b091b2fc459e30c53b0d8e8855dbfefa59f0ee4cea9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
ccd42bf0e5436897f4cd2904cb7e99dc

SHA1
4a91ae1bd5701b2cd929ee7f4d6173d6e0e7c835

SHA256
402d7af8938ace3b59c6b52e0cb8ee70efe0417ef2442a411ee5f1e9e71be50e

SHA512
805cb8ead6efbdd361c6a6024e841f055c3b4fe248c40a420ebb7f21e1e240405d8ea4ee72bafc6d482b7a2754137fc0205337114ee81bed0a8873470ec50f8f

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

Filesize
344B

MD5
f36be352694b72187a021d583f61e98a

SHA1
254424e769f68ed9ddd45965d8291064a839b687

SHA256
c60191d094048de166ab86bf450799d1c46900e4c4ce6a8c2e0670a000baf68b

SHA512
6aa4853a5fffd50655f2ff9a00f4efb00d12c1596f44fed69daa8814b6f01f3e61690ea7be4b670da776565f4a6ceafa6a45b2eb966fd8af468bd57f871207a4

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
7a32725c2d94b8fb3d662fd0d2566630

SHA1
a47ad58e23a14b4cca13bda591e3d2366a0ebcc1

SHA256
7dae1aae04f7558e2115c74efc77e85f4c183bb2a43a4f21d9811a2ce9385031

SHA512
7fa6ac75312c6905e8c98c34cbaa06c7131e3b581d8381cf217451cfa1371f75561b6041dfa1100cdbbe3f5f4232b523c480a931025e6aefd9c261cbcf78dc22

Download Submit
C:\Users\Admin\AppData\Local\14dc87a6-9daf-4c78-bd85-f907d124adb7\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe

Filesize
774KB

MD5
5b14f1bfbc29a60b38ba51486799d5f5

SHA1
cf0e44b5e5368667d47b13d8e88497343779d20f

SHA256
78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe

SHA512
acb6f8cf49827a02da12897eacf5bfadd484f80f1c199e069c61a267a2e7dd8c8126250adbf9658741c23f3ae0d4b44b376426b3f1345bec4a5db3170e7008b8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab2B83.tmp

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
memory/1624-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1624-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1624-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1624-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1624-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2540-29-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2812-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2812-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2812-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2812-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2812-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2812-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2812-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2812-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2964-0-0x00000000002C0000-0x0000000000352000-memory.dmp

Filesize
584KB

Download
memory/2964-1-0x00000000002C0000-0x0000000000352000-memory.dmp

Filesize
584KB

Download
memory/2964-2-0x0000000004480000-0x000000000459B000-memory.dmp

Filesize
1.1MB

Download