djvu | 682c4dd9e48673122b312c51a0e6f5a8a50f9628af6f5f88591ca55c0701b1e2

General

Target

ffbbfa6c81ca32eac215287560bf3ad7.exe
Size

837KB
MD5

ffbbfa6c81ca32eac215287560bf3ad7
SHA1

0f363826ab66fb3d121fcd38b4a229aec5c61892
SHA256

682c4dd9e48673122b312c51a0e6f5a8a50f9628af6f5f88591ca55c0701b1e2
SHA512

6f8677a2764ce560f3c09afe189ece821f9b612765185d22772797e362652087b49d5ff3c5958729bfee3bb33b7b3888e03ccdacabb220e77fb3137b29caa79f
SSDEEP

12288:PZCJTx9Cw3C1e7WzShOqpXJeUButbdxVgx6hnEWB7wR0UUhe3PIPTezrI5E/KzlW:Ux9CK4qreUi7DpA0UUQ/IPurAnlGB5j

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/nddddhsspen6/get.php

Attributes

extension
.moqs
offline_id
CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1
payload_url
http://securebiz.org/dl/build2.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-N3p42CffoV 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: 0318ewgfDd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/4632-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4632-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4632-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4632-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4212-2-0x0000000002380000-0x000000000249B000-memory.dmp	family_djvu
behavioral2/memory/4632-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-37-0x0000000000400000-0x0000000000537000-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
3256	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-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c3e976a4-51ae-4d80-97d1-8bb5868b3af2\\ffbbfa6c81ca32eac215287560bf3ad7.exe\" --AutoStart"	ffbbfa6c81ca32eac215287560bf3ad7.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
17	api.2ip.ua
32	api.2ip.ua

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4212 set thread context of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4632	ffbbfa6c81ca32eac215287560bf3ad7.exe
4632	ffbbfa6c81ca32eac215287560bf3ad7.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4212 wrote to memory of 4632	4212	ffbbfa6c81ca32eac215287560bf3ad7.exe	46
PID 4632 wrote to memory of 3256	4632	ffbbfa6c81ca32eac215287560bf3ad7.exe	73
PID 4632 wrote to memory of 3256	4632	ffbbfa6c81ca32eac215287560bf3ad7.exe	73
PID 4632 wrote to memory of 3256	4632	ffbbfa6c81ca32eac215287560bf3ad7.exe	73

C:\Users\Admin\AppData\Local\Temp\ffbbfa6c81ca32eac215287560bf3ad7.exe
"C:\Users\Admin\AppData\Local\Temp\ffbbfa6c81ca32eac215287560bf3ad7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4212
- C:\Users\Admin\AppData\Local\Temp\ffbbfa6c81ca32eac215287560bf3ad7.exe
  "C:\Users\Admin\AppData\Local\Temp\ffbbfa6c81ca32eac215287560bf3ad7.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4632
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c3e976a4-51ae-4d80-97d1-8bb5868b3af2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3256
- - C:\Users\Admin\AppData\Local\Temp\ffbbfa6c81ca32eac215287560bf3ad7.exe
    "C:\Users\Admin\AppData\Local\Temp\ffbbfa6c81ca32eac215287560bf3ad7.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    PID:4980
  - - C:\Users\Admin\AppData\Local\Temp\ffbbfa6c81ca32eac215287560bf3ad7.exe
      "C:\Users\Admin\AppData\Local\Temp\ffbbfa6c81ca32eac215287560bf3ad7.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:1336

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\c3e976a4-51ae-4d80-97d1-8bb5868b3af2\ffbbfa6c81ca32eac215287560bf3ad7.exe

Filesize
92KB

MD5
5432881de2bbe5cb7437b77aabc11f2b

SHA1
ded40ab57e63f9366db063b80a6e6c9ff382ad08

SHA256
a5c5e6917a98078cb1422b299928e89ecd7248add5686ec7e20f0b53cab2e629

SHA512
801e3a9b717cf090a5a72fc8e1225a40205646e769dab0857fc1b7752dbb83f418477fbba205c837a66886da4465248c19b4a31e9324c5c048881fe556b9b9ce

Download Submit
memory/1336-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4212-1-0x0000000002280000-0x000000000231B000-memory.dmp

Filesize
620KB

Download
memory/4212-2-0x0000000002380000-0x000000000249B000-memory.dmp

Filesize
1.1MB

Download
memory/4632-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4632-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4632-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4632-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4632-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4980-18-0x0000000001FF0000-0x000000000208B000-memory.dmp

Filesize
620KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads