guloader | 1f6b4b1a64f758fa24dd62070d9df7c923ec400786e44c9a0f713ab77eae3019

General

Target

1f6b4b1a64f758fa24dd62070d9df7c923ec400786e44c9a0f713ab77eae3019.exe
Size

672KB
Sample

250215-c475hstlaw
MD5

f73d42881b7d92be154cff027cb90a39
SHA1

497b6abfcd4d89c7e622457ad0ac1409442592a8
SHA256

1f6b4b1a64f758fa24dd62070d9df7c923ec400786e44c9a0f713ab77eae3019
SHA512

2e072b55dbd84c5c029fc8a0674736d0044616ba1d6d2e668b5ee7ad30636defb15baa4d3501323b352a5dcf2ce719a6482f05fe6867cc32414879599abb2879
SSDEEP

12288:hDG4hAuAsoM6yD08VfmyVzya788Ek9CeXDVuMNrv:t2nsoMnDNVfLVzfALVe57Nb

Score

10^/10

Malware Config

Targets

- Target
  
  1f6b4b1a64f758fa24dd62070d9df7c923ec400786e44c9a0f713ab77eae3019.exe
- Size
  
  672KB
- MD5
  
  f73d42881b7d92be154cff027cb90a39
- SHA1
  
  497b6abfcd4d89c7e622457ad0ac1409442592a8
- SHA256
  
  1f6b4b1a64f758fa24dd62070d9df7c923ec400786e44c9a0f713ab77eae3019
- SHA512
  
  2e072b55dbd84c5c029fc8a0674736d0044616ba1d6d2e668b5ee7ad30636defb15baa4d3501323b352a5dcf2ce719a6482f05fe6867cc32414879599abb2879
- SSDEEP
  
  12288:hDG4hAuAsoM6yD08VfmyVzya788Ek9CeXDVuMNrv:t2nsoMnDNVfLVzfALVe57Nb
Score

10^/10

guloader discovery downloader spyware stealer collection
- Guloader family
  guloader
- Guloader,Cloudeye
  A shellcode based downloader first seen in 2020.
  downloader guloader
- Downloads MZ/PE file
- Executes dropped EXE
- Loads dropped DLL
- Reads user/profile data of local email clients
  Email clients store some user data on disk where infostealers will often target it.
  spyware stealer
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Accesses Microsoft Outlook profiles
  collection
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- 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 NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
behavioral1 behavioral2
- Target
  
  $PLUGINSDIR/System.dll
- Size
  
  11KB
- MD5
  
  ee260c45e97b62a5e42f17460d406068
- SHA1
  
  df35f6300a03c4d3d3bd69752574426296b78695
- SHA256
  
  e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
- SHA512
  
  a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3
- SSDEEP
  
  192:eF24sihno00Wfl97nH6T2enXwWobpWBTU4VtHT7dmN35Ol9Sl:h8QIl975eXqlWBrz7YLOl9
Score

8^/10

discovery
- Downloads MZ/PE file
behavioral3 behavioral4