Overview
overview
10Static
static
3Narsil.exe
windows7-x64
10Narsil.exe
windows10-1703-x64
10Narsil.exe
windows10-2004-x64
10Narsil.exe
windows11-21h2-x64
SurrogateS...vc.exe
windows7-x64
10SurrogateS...vc.exe
windows10-1703-x64
10SurrogateS...vc.exe
windows10-2004-x64
10SurrogateS...vc.exe
windows11-21h2-x64
10winserverupd.exe
windows7-x64
10winserverupd.exe
windows10-1703-x64
10winserverupd.exe
windows10-2004-x64
10winserverupd.exe
windows11-21h2-x64
10General
- Target Uemlxaw.zip
- Size 4.9MB
- Sample240318-slmnvscc5w
- SHA256 4a009d7516245a7af1dbc74beacd149316212a8cbd045132e7f95118bfafcece
- MD5 0f09286d0564589399c7b59fa150ec51
- SHA1 3c675f2710f3fb7b4793de2a10ed76c2646ffd82
- SHA512 17e85425b3dfc1be7d20cd7d187345db74e5004fb380d60b6e60b743ce648f7e912bae5a9d17c6144a360572e96011983b955ca12ce617cfff124808eea1ef9c
- SSDEEP 98304:9uEr9EEDARts9w9IT+Lgd3zYYjtB+kB4fLSgeZW9gNvjz:4EhWRtsS4/+YjC6427M9kvP
- MD5 SHA1 SHA512 SSDEEP
Static task
static1
Behavioral task
behavioral1
Sample
Narsil.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Narsil.exe
Resource
win10-20240221-en
Behavioral task
behavioral3
Sample
Narsil.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral4
Sample
Narsil.exe
Resource
win11-20240221-en
Behavioral task
behavioral5
Sample
SurrogateServerIntoSvc.exe
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
SurrogateServerIntoSvc.exe
Resource
win10-20240221-en
Behavioral task
behavioral7
Sample
SurrogateServerIntoSvc.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral8
Sample
SurrogateServerIntoSvc.exe
Resource
win11-20240221-en
Behavioral task
behavioral9
Sample
winserverupd.exe
Resource
win7-20240221-en
Behavioral task
behavioral10
Sample
winserverupd.exe
Resource
win10-20240221-en
Behavioral task
behavioral11
Sample
winserverupd.exe
Resource
win10v2004-20240226-en
Malware Config
Extracted
-
risepro
-
95.217.5.29:50500
Extracted
-
systembc
-
wprogs.top:4001
-
leadsoftware.top:4001
Targets
-
- Target Narsil.exe
- Size 146.9MB
- SHA256 33e28ac931d8477eb8d20603b7b8d8cd55a4356ef106d24b02fa3a36be0ee087
- MD5 a3e747b0e917fe4e066eb1c40729c97a
- SHA1 05d0cab40ea39437451b4f7a1058bbc34f9c0aa8
- SHA512 762dd71cbce06cafff547c3f4a9be0d51899797eaa676b00556778fb27f25649890cacc3efe1af7b3d36a259917185e2509e125444d5552935e2f5a8b873029e
- SSDEEP 49152:pKS9lXHCklzCAMKtoCKt0KKEtDiDJibri0Bp1D:oUXHCIWAMIoBWjCDeL0Bp1D
- MD5 SHA1 SHA512 SSDEEP
-
Detect ZGRat V1
-
Downloads MZ/PE file
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Executes dropped EXE
-
Accesses Microsoft Outlook profiles
-
Adds Run key to start application
-
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
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 SetThreadContext
-
- Target SurrogateServerIntoSvc.exe
- Size 147.8MB
- SHA256 df18a66e0d7dac7371e4371005a83e4735f5e22377b28f00bb0f41a3feee92a5
- MD5 498289ebcaf79eb8c4d1b32fda603ccc
- SHA1 5ba78056884ab0e19a81da9b95c8e1e7e8e7d2f6
- SHA512 492585cb98fd1608b9a30f82e7bf5480e4b483ea586375425ce39d805df2674cb81cf91d966ce0565c6b82479f88051398651e0191201f293f3e548f7e1051a7
- SSDEEP 49152:ndm9asqLK/r8ZOwN/Eqy8QDWGCYhYp/81SArFv29qh1z4S:n4whZOwNaDeR/uSyt29qDz
- MD5 SHA1 SHA512 SSDEEP
-
Detect ZGRat V1
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Legitimate hosting services abused for malware hosting/C2
-
Suspicious use of SetThreadContext
-
- Target winserverupd.exe
- Size 91KB
- SHA256 c06da1d7ce6843074ae3a964dc8aa862151f2196c0e15964d3d9959a44ba89f8
- MD5 607acc5a6b670bd144bf3897cda6b233
- SHA1 24a2fc93216adb3543ee555473b2f61f333384d2
- SHA512 75bd3c2fe2a6b96586e0e1ecf5d282d55f71fb9891961ca1dd6c6be90eaa9a196fd62c8343abfdb039e384895a593f2a01c725451c580980f238c40d764b4643
- SSDEEP 1536:r7fPGykbOqjoHm4pICdfkLtAfupcWX50MxFY+yIOlnToIfLx4fmSxL2MO2:nq6+ouCpk2mpcWJ0r+QNTBfLyfmSBR
- MD5 SHA1 SHA512 SSDEEP
-
Contains code to disable Windows Defender
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
-
Modifies security service
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2