guloader | 8a4d38092e7f0245aa376d724cf3dbe08d4b563a86db3c99e70defaa38beb969

General

Target

8a4d38092e7f0245aa376d724cf3dbe08d4b563a86db3c99e70defaa38beb969_Sigmanly
Size

466KB
Sample

241220-yg5xjasndt
MD5

745504717878bb22b600df7e2c2dd9f4
SHA1

9515d0277803511a4f401674f40f022ed69c85d7
SHA256

8a4d38092e7f0245aa376d724cf3dbe08d4b563a86db3c99e70defaa38beb969
SHA512

8035ff6f18deaaec620acd824bbcecf07d38f2e2f77e322942f635320af75bbc4bd60250f0e61094eed22cfeef652791d61476bd7b4c613ebb6fb7952ae48e4d
SSDEEP

12288:I5AlMIL/obq71R7Oj6rgcPIcXuQd7lxu7Jj1JK8s5FEeKN:ZtL/o2BR7Zrgcwgpxu7Jj1Jiceg

Score

10^/10

Malware Config

Targets

- Target
  
  8a4d38092e7f0245aa376d724cf3dbe08d4b563a86db3c99e70defaa38beb969_Sigmanly
- Size
  
  466KB
- MD5
  
  745504717878bb22b600df7e2c2dd9f4
- SHA1
  
  9515d0277803511a4f401674f40f022ed69c85d7
- SHA256
  
  8a4d38092e7f0245aa376d724cf3dbe08d4b563a86db3c99e70defaa38beb969
- SHA512
  
  8035ff6f18deaaec620acd824bbcecf07d38f2e2f77e322942f635320af75bbc4bd60250f0e61094eed22cfeef652791d61476bd7b4c613ebb6fb7952ae48e4d
- SSDEEP
  
  12288:I5AlMIL/obq71R7Oj6rgcPIcXuQd7lxu7Jj1JK8s5FEeKN:ZtL/o2BR7Zrgcwgpxu7Jj1Jiceg
Score

10^/10

guloader discovery downloader evasion spyware stealer collection
- Guloader family
  guloader
- Guloader,Cloudeye
  A shellcode based downloader first seen in 2020.
  downloader guloader
- Disables Task Manager via registry modification
  evasion
- 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
- 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 NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
behavioral1 behavioral2
- Target
  
  $PLUGINSDIR/System.dll
- Size
  
  11KB
- MD5
  
  ee260c45e97b62a5e42f17460d406068
- SHA1
  
  df35f6300a03c4d3d3bd69752574426296b78695
- SHA256
  
  e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
- SHA512
  
  a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3
- SSDEEP
  
  192:eF24sihno00Wfl97nH6T2enXwWobpWBTU4VtHT7dmN35Ol9Sl:h8QIl975eXqlWBrz7YLOl9
Score

3^/10

discovery
behavioral3 behavioral4