djvu | cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07

Analysis

max time kernel
294s
max time network
298s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
02/05/2024, 06:08

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe
Size 786KB
Sample240502-gv8rxadb68
SHA256 cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07
MD5 f49c53a4db7c7a6e0ef1e9243cde5ea5
SHA1 86e2388514f7f4c2a7acd09c03325b0ed690ef83
SHA512 8bd94a77fcbccbd25d6dcdbad6cf1aefc5e5cefdf3f73f4f7bda2d68147e0a87a877968067528c2bb3cfb95c3ffd668620547fb87a8691ed534bfc24a74b0226
SSDEEP 12288:TOZ8mfnnY5jT3ncoNw7JePBRZ20CohvlPMWaRUyunKH6bkhT0J:4pY5jwo0JGBRZlNNGtuKHEwT0
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.mlza
offline_id
FjtJkuhRHnUARRt9GnbbgUTa6ErhJq4ZM668xSt1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.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. You can get and look video overview decrypt tool: https://we.tl/t-xN3VuzQl0a 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: 0803JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/1340-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/712-4-0x0000000004090000-0x00000000041AB000-memory.dmp	family_djvu
behavioral2/memory/1340-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1340-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1340-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1340-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4592-48-0x0000000000400000-0x0000000000537000-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
3936	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-1-5-21-3968772205-1713802336-1776639840-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\945ad644-1ca6-4565-b073-abff284700b6\\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe\" --AutoStart"	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.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
1	api.2ip.ua
2	api.2ip.ua
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 712 set thread context of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 4652 set thread context of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77

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
1340	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe
1340	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe
4592	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe
4592	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 712 wrote to memory of 1340	712	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	73
PID 1340 wrote to memory of 3936	1340	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	74
PID 1340 wrote to memory of 3936	1340	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	74
PID 1340 wrote to memory of 3936	1340	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	74
PID 1340 wrote to memory of 4652	1340	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	75
PID 1340 wrote to memory of 4652	1340	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	75
PID 1340 wrote to memory of 4652	1340	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	75
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77
PID 4652 wrote to memory of 4592	4652	cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe	77

C:\Users\Admin\AppData\Local\Temp\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe
"C:\Users\Admin\AppData\Local\Temp\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:712
- C:\Users\Admin\AppData\Local\Temp\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe
  "C:\Users\Admin\AppData\Local\Temp\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1340
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\945ad644-1ca6-4565-b073-abff284700b6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3936
- - C:\Users\Admin\AppData\Local\Temp\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe
    "C:\Users\Admin\AppData\Local\Temp\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4652
  - - C:\Users\Admin\AppData\Local\Temp\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe
      "C:\Users\Admin\AppData\Local\Temp\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4592

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

Loading Replay Monitor...

Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 1900c86cf885b5a30f4c6978db628caa35291d0ea1c37ada12638fadadb66467
MD5 1954f91d1857433a6e671fc2134627c4
SHA1 6ec0f77b96e790e17142ddafd79cf8a0d7873da0
SHA512 ca48210f22c6391ab07e05f4cb06729673713214ec81d6934fdade2df472f2f6af013bdb7dbaf3baaf678e771a01604a654b22ec696f3f9a93fe8e73b77ba129
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

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 f5403cec8fedea8df4d64f46fdb507c0b2408ee86a26208f080336f356c81e82
MD5 09bfe7c2f601a1def986803c21cf9dec
SHA1 a50a106c80413f7e94e490630edfd30b329af54b
SHA512 f92a26d0ff9294f9238d5de8a97c7eb8f7d71c493d7c12875bcd405bfc1210f414713fb290ba7f98279d14f43bacdc369e413570793ac3c084ab3af5e8391985
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 318dad06b81c795af3874ee1b7e283d67efddf3d9a9ceea2eff731462f1a03ae
MD5 87262f4c1289e5d015ff1b02dcbd0917
SHA1 646c53693eda4a8fcdff54a47e4f7f1de99137ef
SHA512 eb8b825b0a0137840536b5b4745c0b4c81c21ac67263a51d9f209caa5119ddc44385aa5f8c6337a8f8a07d59ab9d9bdf6a0588e88e6d8e5348d90ddcb8910d2d
MD5 SHA1 SHA512

Submit Download

cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe

Path C:\Users\Admin\AppData\Local\945ad644-1ca6-4565-b073-abff284700b6\cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07.exe
Size 786KB
SHA256 cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07
MD5 f49c53a4db7c7a6e0ef1e9243cde5ea5
SHA1 86e2388514f7f4c2a7acd09c03325b0ed690ef83
SHA512 8bd94a77fcbccbd25d6dcdbad6cf1aefc5e5cefdf3f73f4f7bda2d68147e0a87a877968067528c2bb3cfb95c3ffd668620547fb87a8691ed534bfc24a74b0226
SSDEEP 12288:TOZ8mfnnY5jT3ncoNw7JePBRZ20CohvlPMWaRUyunKH6bkhT0J:4pY5jwo0JGBRZlNNGtuKHEwT0
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/712-4-0x0000000004090000-0x00000000041AB000-memory.dmp

Download

memory/712-1-0x0000000003F50000-0x0000000003FF0000-memory.dmp

Download

memory/1340-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1340-2-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1340-19-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1340-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1340-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-33-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-41-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-44-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-47-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-46-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4592-48-0x0000000000400000-0x0000000000537000-memory.dmp

Download