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Analysis
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max time kernel
47s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
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submitted
18/04/2023, 10:46
General
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Target
Bestar Steel RFQ 0100423(MECH)NBI April-1423.exe
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Size
743KB
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MD5
7b2a0af9c2e205c94e844ad81f8a5e28
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SHA1
d34260f61c9924d5b930500793cb26790fc1f71e
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SHA256
856c8bb75c2b8c79b99f9249c201d20838251a94a4f830afa7995a3af0952842
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SHA512
d2fc07067d70257f199b22aac86436528abe6cb111ca300f1405e39a942e55d74b4b7eb16ef2fad748df55861f0ed7f566a2c8205cc1fb50c154b8249720d02d
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SSDEEP
12288:y/MiJO0BLWwL/Gl6uldjwUyhhUh/GsE0C3OWQqpiHHsYsr9ws7LB:ytI04YnulW3CO7hOW5SHsYsZwCLB
Malware Config
Extracted
agenttesla
https://api.telegram.org/bot5409839916:AAEYUYZy0IhJQAm4VXi620si4okGW8FDL2w/
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
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Looks for VMWare Tools registry key 2 TTPs 1 IoCs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
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Reads user/profile data of local email clients 2 TTPs
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 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
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Suspicious use of SetThreadContext 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious behavior: RenamesItself 1 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 13 IoCs
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outlook_office_path 1 IoCs
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outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Bestar Steel RFQ 0100423(MECH)NBI April-1423.exe"C:\Users\Admin\AppData\Local\Temp\Bestar Steel RFQ 0100423(MECH)NBI April-1423.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mDCsLcbtJNBW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp673C.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Bestar Steel RFQ 0100423(MECH)NBI April-1423.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD564faad36ea254aea550a75e2e4f230f8
SHA151b156e34d3e919a7b93465c79f0cdddc2c2dc5c
SHA2569373e63ea282e07d8ac312e21de3e07218151d0757f9722b145e53ea4d9acf56
SHA5129eeff030d3da096a3802ad8499d3c0f9b91c798f7e25bc58cb2e01489c75eaf081d5615c75e135881a99991bb36c0c1dd6dfa39b8af49b445d2081a5536c9683
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Filesize
232KB
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Filesize
4KB
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Filesize
256KB
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Filesize
256KB
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Filesize
232KB
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Filesize
232KB
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Filesize
232KB
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Filesize
232KB
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Filesize
232KB
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Filesize
232KB
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Filesize
48KB
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Filesize
760KB
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Filesize
256KB
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Filesize
232KB
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Filesize
528KB
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Filesize
256KB