djvu | 54e86caeee3b5324a55b98b2855f56dfcd4624681e5d2f0cb58558be8e40e896

General

Target

26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe
Size

684KB
MD5

d3d46d0339ceb24c85568e75f78846a7
SHA1

36f63066beba540453e1b93e6b1e282aed804234
SHA256

26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7
SHA512

d669aaafddb658f88dd6d325883d7b568b9e6b6dc5914b0d7d9d01cf468f0e0521e05e5a7f46e0437e9389470f4f5ec751b416b94412956c2a208b0bccc8227c
SSDEEP

12288:vE1Gh9OfPNkHH1fl8Zjc38izOfdXacgGeOM0GejX6B:qM9ZZl4mGXjxeOMg4

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.cdqw
offline_id
mMsRxMUuXypapZbGOAfxD9pczHmW8zVRP7Pgjwt1
payload_url
http://brusuax.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-99MNqXMrdS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0840ASdw

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 19 IoCs

resource	yara_rule
behavioral2/memory/3356-2-0x0000000002740000-0x000000000285B000-memory.dmp	family_djvu
behavioral2/memory/4076-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1152-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4260	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-1-5-21-3198953144-1466794930-246379610-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f52af4f3-e9d9-43e8-90ba-6e9fbf9b5073\\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe\" --AutoStart"	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.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
16	api.2ip.ua
36	api.2ip.ua
15	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3356 set thread context of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 2416 set thread context of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94

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
4076	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe
4076	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe
1152	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe
1152	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 3356 wrote to memory of 4076	3356	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	88
PID 4076 wrote to memory of 4260	4076	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	89
PID 4076 wrote to memory of 4260	4076	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	89
PID 4076 wrote to memory of 4260	4076	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	89
PID 4076 wrote to memory of 2416	4076	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	92
PID 4076 wrote to memory of 2416	4076	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	92
PID 4076 wrote to memory of 2416	4076	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	92
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94
PID 2416 wrote to memory of 1152	2416	26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe	94

C:\Users\Admin\AppData\Local\Temp\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe
"C:\Users\Admin\AppData\Local\Temp\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3356
- C:\Users\Admin\AppData\Local\Temp\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe
  "C:\Users\Admin\AppData\Local\Temp\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4076
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f52af4f3-e9d9-43e8-90ba-6e9fbf9b5073" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4260
- - C:\Users\Admin\AppData\Local\Temp\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe
    "C:\Users\Admin\AppData\Local\Temp\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2416
  - - C:\Users\Admin\AppData\Local\Temp\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe
      "C:\Users\Admin\AppData\Local\Temp\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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
896dc4f56c1b7ce86308a438e1eb5384

SHA1
edb5c0ee5aba86a7622d59aa3db7ff3abef929f9

SHA256
9bd599b72ac9d6f5ad1da7982d2a847f52f01c8922bb0d1b27371b11dedf4c3a

SHA512
81728dfb7eccf691ccc4b556d0f61d4af1d0f7696009a03deb46502f843e9bd15b6cc41d50cdba0ea0c26891f0eaffa8a9ff33e8a35ade02c0f51037c7b4e549

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
6b2b5a995b5737e5c16fefda0b03c2a4

SHA1
d5a701f258c79af71ccc4de912b03828a6886d9e

SHA256
a43e34cc558abfed9319fe4ee4043bfd03019c80153ecd5e6605856a0b7c62dd

SHA512
8e0d0aeb6b6808282e0fad6684b6e5effd74e083fae9b06db3d9250f699aff78c1f4cd1cbc6f26bed41feb25d23d7cf88b7a79f9c3a91d7a2ca6faf7ee01909b

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

Filesize
392B

MD5
7f0d7fb71d2e55d6bad7203d32e4a5c5

SHA1
1ff11c856fa38cd86ae081e6961f8fd58f031f76

SHA256
12bd3ddc4a0bbc13d1b7afbf42ce712bee4b5666e3b5a46df1a5030981cde250

SHA512
60b2e43903f8892cb487eeb9a119a54d188031dc4b0d132077e9403fc8d0fcdfec996825c8989b65a3eb1e65c437bf2ca47fcb49abd3b748add10b0fce77bbc5

Download Submit
C:\Users\Admin\AppData\Local\f52af4f3-e9d9-43e8-90ba-6e9fbf9b5073\26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7.exe

Filesize
684KB

MD5
d3d46d0339ceb24c85568e75f78846a7

SHA1
36f63066beba540453e1b93e6b1e282aed804234

SHA256
26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7

SHA512
d669aaafddb658f88dd6d325883d7b568b9e6b6dc5914b0d7d9d01cf468f0e0521e05e5a7f46e0437e9389470f4f5ec751b416b94412956c2a208b0bccc8227c

Download Submit
memory/1152-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1152-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2416-19-0x00000000024D0000-0x000000000256E000-memory.dmp

Filesize
632KB

Download
memory/3356-2-0x0000000002740000-0x000000000285B000-memory.dmp

Filesize
1.1MB

Download
memory/3356-1-0x00000000026A0000-0x0000000002734000-memory.dmp

Filesize
592KB

Download
memory/4076-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads