djvu | 340c6116f270e754a3a4a70976120295cd810da1ad63c92dbe0119f1dcdcadda

General

Target

996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe
Size

749KB
MD5

5242248d32d98adaaa5ecdba0f021027
SHA1

437052aaae8a9408edb522314802065b46bb97a4
SHA256

996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010
SHA512

484083250fc0a063cc313cb95e06578a9af29732fcd16a23edad07c79bf4b727ee56c017a84d22c646e494d24bde5c86f23a1710ead671fdd78a2bea08c42c8e
SSDEEP

12288:OhO1qOL1f9SLwRWPJMV9d4HnWv1YlmHL81ZW5h3FmUpuBKi9mpgADO/rj4GRq8mm:OhO1qi1SE+JMV9d4HnWv1mm5AmpgTj4c

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.mlrd
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: 0805JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/2016-2-0x00000000023E0000-0x00000000024FB000-memory.dmp	family_djvu
behavioral2/memory/3300-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3300-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3300-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3300-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3300-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4796-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4796-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4796-23-0x0000000000400000-0x0000000000537000-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-1-5-21-2890696111-2332180956-3312704074-1000\Control Panel\International\Geo\Nation	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1012	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-1-5-21-2890696111-2332180956-3312704074-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f6662691-7ab5-47cb-9081-8231f9a89d9d\\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe\" --AutoStart"	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
41	api.2ip.ua
42	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2016 set thread context of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 1048 set thread context of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
648	4796	WerFault.exe	93

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3300	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe
3300	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 2016 wrote to memory of 3300	2016	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	87
PID 3300 wrote to memory of 1012	3300	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	89
PID 3300 wrote to memory of 1012	3300	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	89
PID 3300 wrote to memory of 1012	3300	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	89
PID 3300 wrote to memory of 1048	3300	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	91
PID 3300 wrote to memory of 1048	3300	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	91
PID 3300 wrote to memory of 1048	3300	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	91
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93
PID 1048 wrote to memory of 4796	1048	996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe	93

C:\Users\Admin\AppData\Local\Temp\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe
"C:\Users\Admin\AppData\Local\Temp\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Users\Admin\AppData\Local\Temp\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe
  "C:\Users\Admin\AppData\Local\Temp\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3300
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f6662691-7ab5-47cb-9081-8231f9a89d9d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1012
- - C:\Users\Admin\AppData\Local\Temp\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe
    "C:\Users\Admin\AppData\Local\Temp\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1048
  - - C:\Users\Admin\AppData\Local\Temp\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe
      "C:\Users\Admin\AppData\Local\Temp\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4796
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 568
        5⤵
        Program crash
        
        PID:648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4796 -ip 4796
1⤵
PID:740

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

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Downloads

C:\Users\Admin\AppData\Local\f6662691-7ab5-47cb-9081-8231f9a89d9d\996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010.exe

Filesize
749KB

MD5
5242248d32d98adaaa5ecdba0f021027

SHA1
437052aaae8a9408edb522314802065b46bb97a4

SHA256
996c1526dd77d46496c419a60d04ec93d6237e038189a7c5271d73fea720f010

SHA512
484083250fc0a063cc313cb95e06578a9af29732fcd16a23edad07c79bf4b727ee56c017a84d22c646e494d24bde5c86f23a1710ead671fdd78a2bea08c42c8e

Download Submit
memory/1048-18-0x00000000007B0000-0x0000000000845000-memory.dmp

Filesize
596KB

Download
memory/2016-1-0x0000000002240000-0x00000000022D4000-memory.dmp

Filesize
592KB

Download
memory/2016-2-0x00000000023E0000-0x00000000024FB000-memory.dmp

Filesize
1.1MB

Download
memory/3300-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3300-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3300-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3300-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3300-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4796-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4796-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4796-23-0x0000000000400000-0x0000000000537000-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