General
-
Target
omass.exe
-
Size
36KB
-
Sample
210120-xkcxttydcx
-
MD5
aaa69c3544561ed70b13847f6ec763e9
-
SHA1
1e53ed306bd193cffa691f51f940e908ef18cf4b
-
SHA256
cfa46220d1b96e515eedbb82a0285229467f377ede30f732f7f6c48caba3ae1e
-
SHA512
b922f8bdbcc6ee25b635965a24ae87b8d129a8ac7cdd0458e5ddd1c5a62ede6f34b4a5c704fd6a08988f93ab4af424a95b18a563760d8dd584bb5eeba7062016
Static task
static1
Behavioral task
behavioral1
Sample
omass.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
omass.exe
Resource
win10v20201028
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.privateemail.com - Port:
587 - Username:
ashfaq.ali@nationalfuels.pw - Password:
@Mexico1.,
Targets
-
-
Target
omass.exe
-
Size
36KB
-
MD5
aaa69c3544561ed70b13847f6ec763e9
-
SHA1
1e53ed306bd193cffa691f51f940e908ef18cf4b
-
SHA256
cfa46220d1b96e515eedbb82a0285229467f377ede30f732f7f6c48caba3ae1e
-
SHA512
b922f8bdbcc6ee25b635965a24ae87b8d129a8ac7cdd0458e5ddd1c5a62ede6f34b4a5c704fd6a08988f93ab4af424a95b18a563760d8dd584bb5eeba7062016
-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
-
Modifies WinLogon for persistence
-
Turns off Windows Defender SpyNet reporting
-
AgentTesla Payload
-
Looks for VirtualBox Guest Additions in registry
-
Looks for VMWare Tools registry key
-
Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
-
Drops startup file
-
Reads data files stored by FTP clients
Tries to access configuration files associated with programs like FileZilla.
-
Reads user/profile data of local email clients
Email clients store some user data on disk where infostealers will often target it.
-
Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
-
Adds Run key to start application
-
Legitimate hosting services abused for malware hosting/C2
-
Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
-
Suspicious use of NtSetInformationThreadHideFromDebugger
-
Suspicious use of SetThreadContext
-
MITRE ATT&CK Matrix ATT&CK v6
Persistence
Winlogon Helper DLL
1Modify Existing Service
1Registry Run Keys / Startup Folder
1Defense Evasion
Modify Registry
6Disabling Security Tools
4Virtualization/Sandbox Evasion
2