djvu | 581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718

General

Target

JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe
Size

715KB
MD5

c05ae2a0c8027f9fd9373092438a96bf
SHA1

6c6bd896eb8f5ddbef77c67201a3ce1e33f0018c
SHA256

581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718
SHA512

b14c8982e6a8139f543184a8f0a1bc6189a48abae7d6b5e5c7fa0d585148e1a1aa1fe012c8d1c67c790a83e99abafed56956cd52c4d50cd3559c0b16d6132cf1
SSDEEP

12288:UKu0/fa1PT3c0CFBSNrwIQAbbflMz6WM4R3DcZgY8ECMlQyQId5xkHCbQU3oh:UUfa1PTMJKrwnAbbfuVMhCMx7xei3oh

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/4580-1-0x00000000022B0000-0x00000000023CB000-memory.dmp	family_djvu
behavioral2/memory/3784-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3784-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3784-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3784-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3784-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4100-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4100-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4100-21-0x0000000000400000-0x0000000000537000-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-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3088	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-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\abdc298d-af3f-4576-8441-31c3a0d4216c\\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe\" --AutoStart"	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.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
27	api.2ip.ua
26	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4580 set thread context of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 1884 set thread context of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.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
1808	4100	WerFault.exe	91

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3784	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe
3784	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 4580 wrote to memory of 3784	4580	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	87
PID 3784 wrote to memory of 3088	3784	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	88
PID 3784 wrote to memory of 3088	3784	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	88
PID 3784 wrote to memory of 3088	3784	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	88
PID 3784 wrote to memory of 1884	3784	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	89
PID 3784 wrote to memory of 1884	3784	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	89
PID 3784 wrote to memory of 1884	3784	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	89
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91
PID 1884 wrote to memory of 4100	1884	JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe	91

C:\Users\Admin\AppData\Local\Temp\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe
"C:\Users\Admin\AppData\Local\Temp\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Users\Admin\AppData\Local\Temp\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe
  "C:\Users\Admin\AppData\Local\Temp\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3784
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\abdc298d-af3f-4576-8441-31c3a0d4216c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3088
- - C:\Users\Admin\AppData\Local\Temp\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe
    "C:\Users\Admin\AppData\Local\Temp\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1884
  - - C:\Users\Admin\AppData\Local\Temp\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe
      "C:\Users\Admin\AppData\Local\Temp\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4100
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4100 -s 568
        5⤵
        Program crash
        
        PID:1808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4100 -ip 4100
1⤵
PID:2336

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\abdc298d-af3f-4576-8441-31c3a0d4216c\JC_581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718.exe

Filesize
715KB

MD5
c05ae2a0c8027f9fd9373092438a96bf

SHA1
6c6bd896eb8f5ddbef77c67201a3ce1e33f0018c

SHA256
581ccd2b2e2463e729a48af995bec11ef941f885d4e10a3627416dbc69190718

SHA512
b14c8982e6a8139f543184a8f0a1bc6189a48abae7d6b5e5c7fa0d585148e1a1aa1fe012c8d1c67c790a83e99abafed56956cd52c4d50cd3559c0b16d6132cf1

Download Submit
memory/3784-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3784-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3784-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3784-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3784-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4100-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4100-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4100-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4580-0-0x0000000002190000-0x0000000002221000-memory.dmp

Filesize
580KB

Download
memory/4580-1-0x00000000022B0000-0x00000000023CB000-memory.dmp

Filesize
1.1MB

Download
memory/4580-4-0x0000000002190000-0x0000000002221000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads