General
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Target
QUOTATION.doc
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Size
264KB
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Sample
210120-jm9tg6yn96
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MD5
0e038d032902a690430c70eb33883cb0
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SHA1
27d41bdda3d1c9c2f59d33e9a8a384bfc7e2971b
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SHA256
678c5e3b494d58314a8eac0c391c6ef9a13bbd983d40603a717b902be954cd2c
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SHA512
42520cb600a909d39f28929ec97cd844508b91e41bd51d18a12c42bfa661cce2a24ce82c4010c0f6cbaf3d55db1a426bde70789830bf3800f69c4ee3ca01e036
Static task
static1
Behavioral task
behavioral1
Sample
QUOTATION.doc
Resource
win7v20201028
Behavioral task
behavioral2
Sample
QUOTATION.doc
Resource
win10v20201028
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.privateemail.com - Port:
587 - Username:
sales1@razorwirefecning.com - Password:
Blessings@12345
Targets
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Target
QUOTATION.doc
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Size
264KB
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MD5
0e038d032902a690430c70eb33883cb0
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SHA1
27d41bdda3d1c9c2f59d33e9a8a384bfc7e2971b
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SHA256
678c5e3b494d58314a8eac0c391c6ef9a13bbd983d40603a717b902be954cd2c
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SHA512
42520cb600a909d39f28929ec97cd844508b91e41bd51d18a12c42bfa661cce2a24ce82c4010c0f6cbaf3d55db1a426bde70789830bf3800f69c4ee3ca01e036
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Modifies WinLogon for persistence
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AgentTesla Payload
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Looks for VirtualBox Guest Additions in registry
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Blocklisted process makes network request
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Executes dropped EXE
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Looks for VMWare Tools registry key
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Drops startup file
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Loads dropped DLL
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Reads data files stored by FTP clients
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application
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Legitimate hosting services abused for malware hosting/C2
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Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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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
3Virtualization/Sandbox Evasion
2