guloader | 404947450f41c9340be9c9c6ffc432b248f15455c7156e82a4b0fe725d8625c1

General

Target

404947450f41c9340be9c9c6ffc432b248f15455c7156e82a4b0fe725d8625c1
Size

654KB
Sample

250417-dc37xsysc1
MD5

16180461e9e21befe92ce7e0e85eb8f6
SHA1

6186539530e74c1d6cd5733a609ff22857dd878c
SHA256

404947450f41c9340be9c9c6ffc432b248f15455c7156e82a4b0fe725d8625c1
SHA512

14da2b6421f295b5b3190fbf1f9b0dd0c057db4a65c4bf9030d740ced7966ace2e311c3af4b384f710a4a267b90d6e1d9cc3211af74224b80faa8e45100ed55d
SSDEEP

12288:3kAdxdGYu0+DHUDWAeIk3n4OcmVhMtHe45rPICyx27fTJ2XX5yiBeFsSYK:3kGxdG++D1Aevdv2rPxAwbJ2XXRqd

Score

10^/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

196.251.115.182:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-J42W19
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Targets

- Target
  
  Kubba.exe
- Size
  
  676KB
- MD5
  
  332aa2564ed356587d489977705fb53a
- SHA1
  
  333847db1556bd2845e616cdbcda32452204e817
- SHA256
  
  6d73791cb1c08f5c2c98760bee7cc2fce021b022e2e420ad2e18588daf37c045
- SHA512
  
  92b47205a445f0af0505fcfc23cbd0cc2a8bb769969ea8975cac054940a63a5a8674ed4fe82e5527b92347db0ff9c4e384a77d053792dc9954f00723237516c5
- SSDEEP
  
  12288:0Y/WcAdxdOYu0IDH4DUAemK9n4ycm5hMFHeG5r5ICyx27ZTJ2lp5siBeFsk:0Y/WcGxdO+IDhAerd7+r5xAwRJ2lpTqZ
Score

10^/10

guloader remcos remotehost discovery downloader persistence rat
- Guloader family
  guloader
- Guloader,Cloudeye
  A shellcode based downloader first seen in 2020.
  downloader guloader
- Remcos
  Remcos is a closed-source remote control and surveillance software.
  rat remcos
- Remcos family
  remcos
- Detected Nirsoft tools
  Free utilities often used by attackers which can steal passwords, product keys, etc.
- NirSoft MailPassView
  Password recovery tool for various email clients
- NirSoft WebBrowserPassView
  Password recovery tool for various web browsers
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
  persistence
- Legitimate hosting services abused for malware hosting/C2
- Drops file in System32 directory
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
behavioral1 behavioral2
- Target
  
  $PLUGINSDIR/System.dll
- Size
  
  12KB
- MD5
  
  cff85c549d536f651d4fb8387f1976f2
- SHA1
  
  d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
- SHA256
  
  8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
- SHA512
  
  531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88
- SSDEEP
  
  192:Zjvco0qWTlt70m5Aj/lQ0sEWD/wtYbBHFNaDybC7y+XBz0QPi:FHQlt70mij/lQRv/9VMjzr
Score

3^/10

discovery
behavioral3 behavioral4