chimera

Target

advbattoexeconverter.exe
Size

804KB
Sample

240415-xxtnrsdh25
MD5

83bb1b476c7143552853a2cf983c1142
SHA1

8ff8ed5c533d70a7d933ec45264dd700145acd8c
SHA256

af09248cb756488850f9e6f9a7a00149005bf47a9b2087b792ff6bd937297ffb
SHA512

6916c6c5addf43f56b9de217e1b640ab6f4d7e5a73cd33a7189f66c9b7f0b954c5aa635f92fcef5692ca0ca0c8767e97a678e90d545079b5e6d421555f5b761a
SSDEEP

24576:0xFkFHdJ8aT/iziXH6FGnYhqQuimKC6Qpor:0IdJ1KiBYhsl+r

Score

10^/10

Malware Config

Targets

- Target
  
  advbattoexeconverter.exe
- Size
  
  804KB
- MD5
  
  83bb1b476c7143552853a2cf983c1142
- SHA1
  
  8ff8ed5c533d70a7d933ec45264dd700145acd8c
- SHA256
  
  af09248cb756488850f9e6f9a7a00149005bf47a9b2087b792ff6bd937297ffb
- SHA512
  
  6916c6c5addf43f56b9de217e1b640ab6f4d7e5a73cd33a7189f66c9b7f0b954c5aa635f92fcef5692ca0ca0c8767e97a678e90d545079b5e6d421555f5b761a
- SSDEEP
  
  24576:0xFkFHdJ8aT/iziXH6FGnYhqQuimKC6Qpor:0IdJ1KiBYhsl+r
Score

10^/10

chimera adware discovery evasion persistence ransomware spyware stealer
- Adds autorun key to be loaded by Explorer.exe on startup
  persistence
- Chimera
  Ransomware which infects local and network files, often distributed via Dropbox links.
  ransomware chimera
- Chimera Ransomware Loader DLL
  Drops/unpacks executable file which resembles Chimera's Loader.dll.
  ransomware
- Modifies WinLogon for persistence
  persistence
- Modifies firewall policy service
  evasion
- Modifies security service
  evasion
- Renames multiple (3248) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Downloads MZ/PE file
- Manipulates Digital Signatures
  Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.
- Modifies Installed Components in the registry
  persistence
- Registers new Print Monitor
  persistence
- Sets file execution options in registry
  persistence
- Executes dropped EXE
- Loads dropped DLL
- Modifies system executable filetype association
  persistence
- 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
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Drops desktop.ini file(s)
- Installs/modifies Browser Helper Object
  BHOs are DLL modules which act as plugins for Internet Explorer.
  stealer adware
- 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.
- Maps connected drives based on registry
  Disk information is often read in order to detect sandboxing environments.
- Modifies WinLogon
  persistence
- Drops file in System32 directory
behavioral1