djvu | d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795

General

Target

d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe
Size

706KB
MD5

d5a6096de9c752b863b3dca30f7e45bb
SHA1

ce44a164d2d9c53db84be578fe16f1a3502feb98
SHA256

d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795
SHA512

2ac5a5f22faf3c31b22582c715eaea55bff7d416c70c60b926f813989d59838bfec4cb3636f13fab5859e4c7c120847311338cb191fc617dc47e175edffc4dbc
SSDEEP

12288:CdSha8D5WazSYxsOUp5oVt3REwpXXQeU7MtWxMADtkbTfXH:+ca8DcazDUDobbpnQN7mW1DwfXH

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.wwza
offline_id
LtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1
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-xoUXGr6cqT 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: 0789JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/636-1-0x0000000002350000-0x000000000246B000-memory.dmp	family_djvu
behavioral2/memory/4020-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4020-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4020-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4020-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4020-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4984-21-0x0000000000400000-0x0000000000537000-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-1-5-21-919254492-3979293997-764407192-1000\Control Panel\International\Geo\Nation	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
5056	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-1-5-21-919254492-3979293997-764407192-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f4ecf4f6-35c6-4d9e-bc94-6f2724b13d8c\\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe\" --AutoStart"	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.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
16	api.2ip.ua
17	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 636 set thread context of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 2628 set thread context of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94

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
3424	4984	WerFault.exe	94

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4020	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe
4020	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 636 wrote to memory of 4020	636	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	86
PID 4020 wrote to memory of 5056	4020	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	88
PID 4020 wrote to memory of 5056	4020	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	88
PID 4020 wrote to memory of 5056	4020	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	88
PID 4020 wrote to memory of 2628	4020	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	90
PID 4020 wrote to memory of 2628	4020	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	90
PID 4020 wrote to memory of 2628	4020	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	90
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94
PID 2628 wrote to memory of 4984	2628	d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe	94

C:\Users\Admin\AppData\Local\Temp\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe
"C:\Users\Admin\AppData\Local\Temp\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:636
- C:\Users\Admin\AppData\Local\Temp\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe
  "C:\Users\Admin\AppData\Local\Temp\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4020
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f4ecf4f6-35c6-4d9e-bc94-6f2724b13d8c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:5056
- - C:\Users\Admin\AppData\Local\Temp\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe
    "C:\Users\Admin\AppData\Local\Temp\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2628
  - - C:\Users\Admin\AppData\Local\Temp\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe
      "C:\Users\Admin\AppData\Local\Temp\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4984
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 568
        5⤵
        Program crash
        
        PID:3424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4984 -ip 4984
1⤵
PID:1936

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\Local\f4ecf4f6-35c6-4d9e-bc94-6f2724b13d8c\d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795.exe

Filesize
706KB

MD5
d5a6096de9c752b863b3dca30f7e45bb

SHA1
ce44a164d2d9c53db84be578fe16f1a3502feb98

SHA256
d2a942146832748b6d83c11ea4a791e4b3b5ecfc21a5d4a48453b6595d1ee795

SHA512
2ac5a5f22faf3c31b22582c715eaea55bff7d416c70c60b926f813989d59838bfec4cb3636f13fab5859e4c7c120847311338cb191fc617dc47e175edffc4dbc

Download Submit
memory/636-0-0x00000000022B0000-0x0000000002342000-memory.dmp

Filesize
584KB

Download
memory/636-1-0x0000000002350000-0x000000000246B000-memory.dmp

Filesize
1.1MB

Download
memory/636-5-0x00000000022B0000-0x0000000002342000-memory.dmp

Filesize
584KB

Download
memory/4020-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4020-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4020-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4020-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4020-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4984-21-0x0000000000400000-0x0000000000537000-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