djvu | 11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c

General

Target

11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe
Size

744KB
MD5

b8aebc100a274c95d2c92c50f721d12e
SHA1

c5d43041dd429e8af06dc3c6302cca915ff77cc0
SHA256

11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c
SHA512

f746f6606befa5b5c510d99f4815e2dc26b45701ee32eea14f4498542216f112000d2e35a8ac1a727cffa21abd91f7c49be0b9d5b654a8f5311096e7ba386d50
SSDEEP

12288:5VPXOr5lH8F6Ls1bAJW5axYRy9bC9ooXo6Xiak3OUiPMkdUv+:HPSKbJ5axYYgN7il+UZaUv+

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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 17 IoCs

resource	yara_rule
behavioral2/memory/2216-2-0x0000000002620000-0x000000000273B000-memory.dmp	family_djvu
behavioral2/memory/4416-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4416-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4416-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4416-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4416-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-45-0x0000000000400000-0x0000000000537000-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
2416	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-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4d861f04-f43d-4f15-9f9d-96134352efdd\\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe\" --AutoStart"	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.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
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2216 set thread context of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 3084 set thread context of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86

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
4416	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe
4416	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe
4984	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe
4984	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 2216 wrote to memory of 4416	2216	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	81
PID 4416 wrote to memory of 2416	4416	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	82
PID 4416 wrote to memory of 2416	4416	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	82
PID 4416 wrote to memory of 2416	4416	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	82
PID 4416 wrote to memory of 3084	4416	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	83
PID 4416 wrote to memory of 3084	4416	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	83
PID 4416 wrote to memory of 3084	4416	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	83
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86
PID 3084 wrote to memory of 4984	3084	11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe	86

C:\Users\Admin\AppData\Local\Temp\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe
"C:\Users\Admin\AppData\Local\Temp\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Users\Admin\AppData\Local\Temp\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe
  "C:\Users\Admin\AppData\Local\Temp\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4416
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\4d861f04-f43d-4f15-9f9d-96134352efdd" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2416
- - C:\Users\Admin\AppData\Local\Temp\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe
    "C:\Users\Admin\AppData\Local\Temp\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3084
  - - C:\Users\Admin\AppData\Local\Temp\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe
      "C:\Users\Admin\AppData\Local\Temp\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4984

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

System Information Discovery

1

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
844a93e096b7ac8f56f9286642d59fed

SHA1
6bf7e649df885f4338d9b84864c4fb2c6d06d2ed

SHA256
5a344dea279de4e33fd977f55d63b9518cac5ad62e2e5cd09a81f56ced29eddb

SHA512
eea9f130fdbb0b0ad23e0fcfc25c14be2827cb641f1d1a6aa2097a1e8b9b81e8e3ebc5633f8fccac60039d361da971f1c5e1085371ca23bc0c3c125bdddd60df

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
807bcea43f38ca582bfa0a0042940dad

SHA1
8089dc240a46cf8be244b9b715bfd77739f867ec

SHA256
63c41dd28cca6ede44ff34a7decdfce8e0ac2a3556ac5017f1eb9b500ec71b49

SHA512
d4225a1be27edd1636e61e27481f399b97cd56c308160368ec159e6724fa63a266246798d61d6979f81c006ab1b5a9e4d6fbebe69a6c528836f4afe6e578a4f1

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

Filesize
392B

MD5
bb6aaf856cd4b841f05bda2242fde626

SHA1
09df7c0ddb8e962307c18d1f2101d2b36b5189a6

SHA256
f6cc71f758059393b167af51979ba040482f11c1bc9fe76a111d286054aa3308

SHA512
8f6a7572a7d1e0d4aad02fb3ed3cdcb760a493fbe35a45270d48a94170ba778bc81cacce8c9ac7ddc653fb4e0fe63dfa68d9552f4669c7930ddb798aa01caab9

Download Submit
C:\Users\Admin\AppData\Local\4d861f04-f43d-4f15-9f9d-96134352efdd\11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c.exe

Filesize
744KB

MD5
b8aebc100a274c95d2c92c50f721d12e

SHA1
c5d43041dd429e8af06dc3c6302cca915ff77cc0

SHA256
11787248543667fdcd0be279b136dcea5485b1bdffde066975921a268a1e675c

SHA512
f746f6606befa5b5c510d99f4815e2dc26b45701ee32eea14f4498542216f112000d2e35a8ac1a727cffa21abd91f7c49be0b9d5b654a8f5311096e7ba386d50

Download Submit
memory/2216-1-0x0000000002580000-0x000000000261A000-memory.dmp

Filesize
616KB

Download
memory/2216-2-0x0000000002620000-0x000000000273B000-memory.dmp

Filesize
1.1MB

Download
memory/3084-24-0x0000000000400000-0x0000000000812000-memory.dmp

Filesize
4.1MB

Download
memory/3084-27-0x0000000000400000-0x0000000000812000-memory.dmp

Filesize
4.1MB

Download
memory/4416-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4416-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4416-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4416-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4416-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads