djvu | 844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080

General

Target

844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe
Size

725KB
MD5

75321b3d5f2abb0dcbfe888c2f4ce3dd
SHA1

f79a20bc1929b9dbb74bc276335c03d2a2deb331
SHA256

844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080
SHA512

c73493d7045ea75623d0ae1f97a4c3dc63f36c82bb0de3dc54bf3eddd814191811b7c1710c8ee2fa1ca9e96fa2a05bc0d4da8d063bfcc1fcb6ed5ef12760f5c3
SSDEEP

12288:v2owNtMaPqWd88tbL5i+8rrqM/1bbL1jKVbO/s559P54jNwBN8NEMf4ANZ:v2owX/PqWdVtbL5i+8rrqM9mqkz9GasV

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes

extension
.ttwq
offline_id
9qw1wmu1ty4GEiHZdxilHPjCyX6ENKTotjt6MIt1
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-4vhLUot4Kz 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: 0798JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/4708-2-0x00000000042E0000-0x00000000043FB000-memory.dmp	family_djvu
behavioral1/memory/4792-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4792-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4792-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4792-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4792-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3756-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3756-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3756-23-0x0000000000400000-0x0000000000537000-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-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1816	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\\86ad973e-aa1e-4a43-9c6d-2468f7748766\\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe\" --AutoStart"	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.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
31	api.2ip.ua
32	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4708 set thread context of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4668 set thread context of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96

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
540	3756	WerFault.exe	96

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4792	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe
4792	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4708 wrote to memory of 4792	4708	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	88
PID 4792 wrote to memory of 1816	4792	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	89
PID 4792 wrote to memory of 1816	4792	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	89
PID 4792 wrote to memory of 1816	4792	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	89
PID 4792 wrote to memory of 4668	4792	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	90
PID 4792 wrote to memory of 4668	4792	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	90
PID 4792 wrote to memory of 4668	4792	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	90
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96
PID 4668 wrote to memory of 3756	4668	844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe	96

C:\Users\Admin\AppData\Local\Temp\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe
"C:\Users\Admin\AppData\Local\Temp\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4708
- C:\Users\Admin\AppData\Local\Temp\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe
  "C:\Users\Admin\AppData\Local\Temp\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4792
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\86ad973e-aa1e-4a43-9c6d-2468f7748766" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1816
- - C:\Users\Admin\AppData\Local\Temp\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe
    "C:\Users\Admin\AppData\Local\Temp\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4668
  - - C:\Users\Admin\AppData\Local\Temp\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe
      "C:\Users\Admin\AppData\Local\Temp\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:3756
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3756 -s 568
        5⤵
        Program crash
        
        PID:540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3756 -ip 3756
1⤵
PID:2032

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\86ad973e-aa1e-4a43-9c6d-2468f7748766\844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080.exe

Filesize
725KB

MD5
75321b3d5f2abb0dcbfe888c2f4ce3dd

SHA1
f79a20bc1929b9dbb74bc276335c03d2a2deb331

SHA256
844bbc22c216874616e09dc2f4d53128b2586d327bbba688bfacb144e3350080

SHA512
c73493d7045ea75623d0ae1f97a4c3dc63f36c82bb0de3dc54bf3eddd814191811b7c1710c8ee2fa1ca9e96fa2a05bc0d4da8d063bfcc1fcb6ed5ef12760f5c3

Download Submit
memory/3756-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3756-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3756-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4668-18-0x0000000003FB0000-0x0000000004046000-memory.dmp

Filesize
600KB

Download
memory/4708-1-0x0000000004220000-0x00000000042B4000-memory.dmp

Filesize
592KB

Download
memory/4708-2-0x00000000042E0000-0x00000000043FB000-memory.dmp

Filesize
1.1MB

Download
memory/4792-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4792-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4792-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4792-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4792-15-0x0000000000400000-0x0000000000537000-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