djvu | 86c75c65454898c6ee53a1178b2753ab0b379cea9015848263f0fd5a39c149a4

General

Target

d75fce41ee61ff4a5b4a85233a7324db.exe
Size

855KB
MD5

d75fce41ee61ff4a5b4a85233a7324db
SHA1

bb885872328fc4693f5992e24eceddbefb9c1b7e
SHA256

86c75c65454898c6ee53a1178b2753ab0b379cea9015848263f0fd5a39c149a4
SHA512

aaa4bdcbf5b7f4b43bb2fbff4edd331d5fde8bb54221bf9d6b9b82bb16478dc76a50757381f6b5a74401c59b0036c409aa0dafa85e87c51f3eb446bbdd32a4f8
SSDEEP

12288:T2/XAioyGp/W6hAbeanOTD+JvJXEH4DZaV8Q7hnZkr7jyryANhrr7dw4jHnXv:mXFMIA4ElmohnZwgrr24rv

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/nddddhsspen6/get.php

Attributes

extension
.aeur
offline_id
PLHYenhTzernvINe5FDZE1JEquSPr2tHDdFTTit1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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-rbzFCkr9sY 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: 0320gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 12 IoCs

resource	yara_rule
behavioral2/memory/972-2-0x00000000050F0000-0x000000000520B000-memory.dmp	family_djvu
behavioral2/memory/4372-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4372-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4372-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4372-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4372-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4372-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4372-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3524-23-0x0000000004F00000-0x0000000004F9C000-memory.dmp	family_djvu
behavioral2/memory/3608-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3608-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3608-28-0x0000000000400000-0x0000000000537000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	d75fce41ee61ff4a5b4a85233a7324db.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4928	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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\227ba774-6e5b-45c1-ba0e-22dbca60bc7f\\d75fce41ee61ff4a5b4a85233a7324db.exe\" --AutoStart"	d75fce41ee61ff4a5b4a85233a7324db.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
43	api.2ip.ua
44	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 972 set thread context of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 3524 set thread context of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107

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
2064	3608	WerFault.exe	107

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4372	d75fce41ee61ff4a5b4a85233a7324db.exe
4372	d75fce41ee61ff4a5b4a85233a7324db.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 972 wrote to memory of 4372	972	d75fce41ee61ff4a5b4a85233a7324db.exe	99
PID 4372 wrote to memory of 4928	4372	d75fce41ee61ff4a5b4a85233a7324db.exe	103
PID 4372 wrote to memory of 4928	4372	d75fce41ee61ff4a5b4a85233a7324db.exe	103
PID 4372 wrote to memory of 4928	4372	d75fce41ee61ff4a5b4a85233a7324db.exe	103
PID 4372 wrote to memory of 3524	4372	d75fce41ee61ff4a5b4a85233a7324db.exe	105
PID 4372 wrote to memory of 3524	4372	d75fce41ee61ff4a5b4a85233a7324db.exe	105
PID 4372 wrote to memory of 3524	4372	d75fce41ee61ff4a5b4a85233a7324db.exe	105
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107
PID 3524 wrote to memory of 3608	3524	d75fce41ee61ff4a5b4a85233a7324db.exe	107

C:\Users\Admin\AppData\Local\Temp\d75fce41ee61ff4a5b4a85233a7324db.exe
"C:\Users\Admin\AppData\Local\Temp\d75fce41ee61ff4a5b4a85233a7324db.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:972
- C:\Users\Admin\AppData\Local\Temp\d75fce41ee61ff4a5b4a85233a7324db.exe
  "C:\Users\Admin\AppData\Local\Temp\d75fce41ee61ff4a5b4a85233a7324db.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4372
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\227ba774-6e5b-45c1-ba0e-22dbca60bc7f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4928
- - C:\Users\Admin\AppData\Local\Temp\d75fce41ee61ff4a5b4a85233a7324db.exe
    "C:\Users\Admin\AppData\Local\Temp\d75fce41ee61ff4a5b4a85233a7324db.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3524
  - - C:\Users\Admin\AppData\Local\Temp\d75fce41ee61ff4a5b4a85233a7324db.exe
      "C:\Users\Admin\AppData\Local\Temp\d75fce41ee61ff4a5b4a85233a7324db.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:3608
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3608 -s 568
        5⤵
        Program crash
        
        PID:2064

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:4076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3608 -ip 3608
1⤵
PID:2452

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\227ba774-6e5b-45c1-ba0e-22dbca60bc7f\d75fce41ee61ff4a5b4a85233a7324db.exe

Filesize
855KB

MD5
d75fce41ee61ff4a5b4a85233a7324db

SHA1
bb885872328fc4693f5992e24eceddbefb9c1b7e

SHA256
86c75c65454898c6ee53a1178b2753ab0b379cea9015848263f0fd5a39c149a4

SHA512
aaa4bdcbf5b7f4b43bb2fbff4edd331d5fde8bb54221bf9d6b9b82bb16478dc76a50757381f6b5a74401c59b0036c409aa0dafa85e87c51f3eb446bbdd32a4f8

Download Submit
memory/972-2-0x00000000050F0000-0x000000000520B000-memory.dmp

Filesize
1.1MB

Download
memory/972-1-0x0000000005020000-0x00000000050B9000-memory.dmp

Filesize
612KB

Download
memory/3524-23-0x0000000004F00000-0x0000000004F9C000-memory.dmp

Filesize
624KB

Download
memory/3608-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3608-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3608-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4372-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4372-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4372-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4372-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4372-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4372-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4372-3-0x0000000000400000-0x0000000000537000-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