djvu | 7173b4968de2b52c40d49fd0e752baa7460c8bf3470f69bc3d16db69843d29d2

General

Target

7173b4968de2b52c40d49fd0e752baa7460c8bf3470f69bc3d16db69843d29d2
Size

201KB
Sample

220925-ga24maddg7
MD5

d60e9559ac90afab9072c4afc2fc2dce
SHA1

9ceae279c46bbc44a5484ed6f99b3a673b7a1e53
SHA256

7173b4968de2b52c40d49fd0e752baa7460c8bf3470f69bc3d16db69843d29d2
SHA512

775068f63dd926aa2dbabce86e54dfba3c5d570d2ed076cb8428fd2dc9e1ebe517aa22e75825a2f9f845c88d97c3481504631b4937ed3bf6f24c9ef9d76b6369
SSDEEP

3072:l23VZLDWJ91rN5NwKoEGWC0Zs7JnqvqBcnSFZwN/PkIXx:sLD81xwTWC0ilnWzSF

Score

10^/10

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/lancer/get.php

Attributes

extension
.ofww
offline_id
xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1
payload_url
http://rgyui.top/dl/build2.exe
http://winnlinne.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

- Target
  
  7173b4968de2b52c40d49fd0e752baa7460c8bf3470f69bc3d16db69843d29d2
- Size
  
  201KB
- MD5
  
  d60e9559ac90afab9072c4afc2fc2dce
- SHA1
  
  9ceae279c46bbc44a5484ed6f99b3a673b7a1e53
- SHA256
  
  7173b4968de2b52c40d49fd0e752baa7460c8bf3470f69bc3d16db69843d29d2
- SHA512
  
  775068f63dd926aa2dbabce86e54dfba3c5d570d2ed076cb8428fd2dc9e1ebe517aa22e75825a2f9f845c88d97c3481504631b4937ed3bf6f24c9ef9d76b6369
- SSDEEP
  
  3072:l23VZLDWJ91rN5NwKoEGWC0Zs7JnqvqBcnSFZwN/PkIXx:sLD81xwTWC0ilnWzSF
Score

10^/10

djvu smokeloader tofsee backdoor collection discovery evasion persistence ransomware trojan
- Detected Djvu ransomware
- Detects Smokeloader packer
- Djvu Ransomware
  Ransomware which is a variant of the STOP family.
  ransomware djvu
- SmokeLoader
  Modular backdoor trojan in use since 2014.
  trojan backdoor smokeloader
- Tofsee
  Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
  trojan tofsee
- Creates new service(s)
  persistence
- Downloads MZ/PE file
- Executes dropped EXE
- Modifies Windows Firewall
  evasion
- Deletes itself
- Loads dropped DLL
- Modifies file permissions
  discovery
- Accesses Microsoft Outlook profiles
  collection
- Adds Run key to start application
  persistence
- Legitimate hosting services abused for malware hosting/C2
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext
behavioral1