cryptbot

General

Target

RNSM00393.7z
Size

42.9MB
Sample

241101-2tqvxsvkgv
MD5

c669c4fc12893f651e89581f9988813c
SHA1

ecc05197cfa3d2dbfb34826c8593807445b1f963
SHA256

fa1da5867ebac2dddcf4b73fd40052b86847b66dd90019ab3f1f4d3f228b8739
SHA512

304dfc4f7d143ae65a49848510367a65ccd1756c9b58c5e28ca33981cc9885803115ed310024ae33ef80bce1b3b82d74d0727005c3df3090d0165651d97d4db2
SSDEEP

786432:sEpOmv03qjWHKUuSdZVZFhxZYTBudpPsuoVgThdqNiF+j85BMxw/zoy+aG7O9gci:sEUbqjQzuSdZVXhxStudJzoVg9Q8F+jN

Score

10^/10

Malware Config

Extracted

Family

cryptbot

C2

bibinene06.top

moraass11.top

Extracted

Family

djvu

C2

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

Attributes

extension
.moss
offline_id
JfQF2MdGDbN6Jyv88cdFwKcakT7HML8XzQtzmYt1
payload_url
http://cjto.top/files/penelop/updatewin1.exe

http://cjto.top/files/penelop/updatewin2.exe

http://cjto.top/files/penelop/updatewin.exe

http://cjto.top/files/penelop/3.exe

http://cjto.top/files/penelop/4.exe

http://cjto.top/files/penelop/5.exe
ransomnote
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rsa_pubkey.plain

Targets

- Target
  
  RNSM00393.7z
- Size
  
  42.9MB
- MD5
  
  c669c4fc12893f651e89581f9988813c
- SHA1
  
  ecc05197cfa3d2dbfb34826c8593807445b1f963
- SHA256
  
  fa1da5867ebac2dddcf4b73fd40052b86847b66dd90019ab3f1f4d3f228b8739
- SHA512
  
  304dfc4f7d143ae65a49848510367a65ccd1756c9b58c5e28ca33981cc9885803115ed310024ae33ef80bce1b3b82d74d0727005c3df3090d0165651d97d4db2
- SSDEEP
  
  786432:sEpOmv03qjWHKUuSdZVZFhxZYTBudpPsuoVgThdqNiF+j85BMxw/zoy+aG7O9gci:sEUbqjQzuSdZVXhxStudJzoVg9Q8F+jN
Score

10^/10

cryptbot dharma djvu gandcrab stormkitty backdoor defense_evasion discovery evasion execution impact persistence ransomware spyware stealer
- CryptBot
  CryptBot is a C++ stealer distributed widely in bundle with other software.
  spyware stealer cryptbot
- CryptBot payload
- Cryptbot family
  cryptbot
- Detected Djvu ransomware
- Dharma
  Dharma is a ransomware that uses security software installation to hide malicious activities.
  ransomware dharma
- Dharma family
  dharma
- Djvu Ransomware
  Ransomware which is a variant of the STOP family.
  ransomware djvu
- Djvu family
  djvu
- GandCrab payload
- Gandcrab
  Gandcrab is a Trojan horse that encrypts files on a computer.
  ransomware backdoor gandcrab
- Gandcrab family
  gandcrab
- StormKitty
  StormKitty is an open source info stealer written in C#.
  stealer stormkitty
- StormKitty payload
- Stormkitty family
  stormkitty
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware defense_evasion impact execution
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
  evasion
- Checks BIOS information in registry
  BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Drops startup file
- Executes dropped EXE
- Identifies Wine through registry keys
  Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
  evasion
- Loads dropped DLL
- Modifies file permissions
  discovery
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Adds Run key to start application
  persistence
- Drops desktop.ini file(s)
- 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.
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
behavioral1