djvu | b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502

General

Target

b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe
Size

809KB
MD5

0c2114f292da69f8b82e78a1a8441649
SHA1

908a6fd97369255fa3fca0fede95e0a985cce375
SHA256

b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502
SHA512

bad5cb1ae71dee29e22729e06eb2293a8b92093b7fbcdf41813427a638b816b4394afa4ad1a69e3c7ee97d153473f5dbe68f78be6fe8037180c8ca55a72e5fb2
SSDEEP

12288:eMb3r6sp6A3X39nZgbsPt3hb/QusXDNE8M/hlMbH3JfkLd052ksYT:eMbu4H39nZg4FRbnszNE868RkOr

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.ooza
offline_id
dhL6XvokZotUzL67Na5WfNIBufODsob7eYc3mzt1
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-XA1LckrLRP 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: 0785Okhu

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/2020-2-0x0000000004110000-0x000000000422B000-memory.dmp	family_djvu
behavioral2/memory/2004-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2004-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2004-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2004-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2004-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4308-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4308-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4308-23-0x0000000000400000-0x0000000000537000-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-1-5-21-3027552071-446050021-1254071215-1000\Control Panel\International\Geo\Nation	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3488	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-1-5-21-3027552071-446050021-1254071215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\af21e22b-3197-4714-9004-b8b5647f7841\\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe\" --AutoStart"	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.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
18	api.2ip.ua
19	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2020 set thread context of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 5084 set thread context of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91

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
3080	4308	WerFault.exe	91

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2004	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe
2004	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2020 wrote to memory of 2004	2020	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	87
PID 2004 wrote to memory of 3488	2004	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	88
PID 2004 wrote to memory of 3488	2004	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	88
PID 2004 wrote to memory of 3488	2004	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	88
PID 2004 wrote to memory of 5084	2004	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	89
PID 2004 wrote to memory of 5084	2004	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	89
PID 2004 wrote to memory of 5084	2004	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	89
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91
PID 5084 wrote to memory of 4308	5084	b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe	91

C:\Users\Admin\AppData\Local\Temp\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe
"C:\Users\Admin\AppData\Local\Temp\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Users\Admin\AppData\Local\Temp\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe
  "C:\Users\Admin\AppData\Local\Temp\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\af21e22b-3197-4714-9004-b8b5647f7841" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3488
- - C:\Users\Admin\AppData\Local\Temp\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe
    "C:\Users\Admin\AppData\Local\Temp\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:5084
  - - C:\Users\Admin\AppData\Local\Temp\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe
      "C:\Users\Admin\AppData\Local\Temp\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4308
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4308 -s 568
        5⤵
        Program crash
        
        PID:3080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4308 -ip 4308
1⤵
PID:1808

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\af21e22b-3197-4714-9004-b8b5647f7841\b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502.exe

Filesize
809KB

MD5
0c2114f292da69f8b82e78a1a8441649

SHA1
908a6fd97369255fa3fca0fede95e0a985cce375

SHA256
b8bab1dc91278db234438483c3619bc310e1969db6405533fc836aad60a7e502

SHA512
bad5cb1ae71dee29e22729e06eb2293a8b92093b7fbcdf41813427a638b816b4394afa4ad1a69e3c7ee97d153473f5dbe68f78be6fe8037180c8ca55a72e5fb2

Download Submit
memory/2004-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2004-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2020-1-0x0000000003FB0000-0x0000000004046000-memory.dmp

Filesize
600KB

Download
memory/2020-2-0x0000000004110000-0x000000000422B000-memory.dmp

Filesize
1.1MB

Download
memory/4308-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4308-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4308-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5084-18-0x0000000003F60000-0x0000000004001000-memory.dmp

Filesize
644KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads