djvu | a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c

General

Target

a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe
Size

733KB
MD5

fe346c873e1e18c64bc89e26c1e181fc
SHA1

8030d560bc7d5576a23b5bb5b254e485299272bd
SHA256

a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c
SHA512

86e51c9a509b8d07907090b571bbdd06db31d1627227701e0c6f21127eadf937fc37b26893220467731e217309e15580c36c780bc8d7084d07c398180681fe13
SSDEEP

12288:Bf1nRBhRpGPMQHcOi6LzNKBxWIAARH81VMeYJ/QSK9zD6PvrvtN4mZugwqJyzOnX:Bf1n3hjSJH5iMzNyxeARcYeiK9z+71NZ

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.azhi
offline_id
GQ9DjFmWFDqpsyzsOnaxE1Xr4MPL1dG4vPfPDNt1
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-e5pgPH03fe 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: 0793

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/1864-1-0x0000000002210000-0x000000000232B000-memory.dmp	family_djvu
behavioral2/memory/4300-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4300-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4300-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4300-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4300-14-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4204-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4204-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4204-21-0x0000000000400000-0x0000000000537000-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-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3900	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-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ad8c50de-00e5-4a49-aa47-9e1154950ed1\\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe\" --AutoStart"	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.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
50	api.2ip.ua
51	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1864 set thread context of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1076 set thread context of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99

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
5064	4204	WerFault.exe	99

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4300	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe
4300	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 1864 wrote to memory of 4300	1864	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	89
PID 4300 wrote to memory of 3900	4300	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	94
PID 4300 wrote to memory of 3900	4300	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	94
PID 4300 wrote to memory of 3900	4300	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	94
PID 4300 wrote to memory of 1076	4300	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	95
PID 4300 wrote to memory of 1076	4300	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	95
PID 4300 wrote to memory of 1076	4300	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	95
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99
PID 1076 wrote to memory of 4204	1076	a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe	99

C:\Users\Admin\AppData\Local\Temp\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe
"C:\Users\Admin\AppData\Local\Temp\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1864
- C:\Users\Admin\AppData\Local\Temp\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe
  "C:\Users\Admin\AppData\Local\Temp\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4300
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\ad8c50de-00e5-4a49-aa47-9e1154950ed1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3900
- - C:\Users\Admin\AppData\Local\Temp\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe
    "C:\Users\Admin\AppData\Local\Temp\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1076
  - - C:\Users\Admin\AppData\Local\Temp\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe
      "C:\Users\Admin\AppData\Local\Temp\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4204
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4204 -s 568
        5⤵
        Program crash
        
        PID:5064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4204 -ip 4204
1⤵
PID:4220

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\ad8c50de-00e5-4a49-aa47-9e1154950ed1\a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c.exe

Filesize
733KB

MD5
fe346c873e1e18c64bc89e26c1e181fc

SHA1
8030d560bc7d5576a23b5bb5b254e485299272bd

SHA256
a9c957fcae042f43e5b80f9fa373073eaa75ff7f7195a412a25aeaab042cb08c

SHA512
86e51c9a509b8d07907090b571bbdd06db31d1627227701e0c6f21127eadf937fc37b26893220467731e217309e15580c36c780bc8d7084d07c398180681fe13

Download Submit
memory/1076-16-0x0000000002170000-0x0000000002201000-memory.dmp

Filesize
580KB

Download
memory/1864-0-0x0000000002170000-0x0000000002201000-memory.dmp

Filesize
580KB

Download
memory/1864-1-0x0000000002210000-0x000000000232B000-memory.dmp

Filesize
1.1MB

Download
memory/4204-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4204-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4204-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4300-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4300-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4300-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4300-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4300-14-0x0000000000400000-0x0000000000537000-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