Analysis
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max time kernel
99s -
max time network
112s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
22-02-2021 07:26
General
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Target
YKRAB010B_KHE_Preminary Packing List.xlsx.exe
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Size
1.1MB
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MD5
9a06197daf40639c61cc898e8db91340
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SHA1
ffe7c6850523c7d4c7336dee86e65662d8a228db
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SHA256
7a44d661f4c1ac837b0045dc28562b098cb66b5e371bda8a79ef00000fa66a65
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SHA512
c90c7d9d0809e266a57110681078aaec2e224a01c567d7c6c115300b046ff1ea15d3b9f37d58aaf003e24a33714caa63b765275947515d7a45228eb208b4e277
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.hyshippingcn.com - Port:
587 - Username:
[email protected] - Password:
e*u@qkS4
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 2 IoCs
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Executes dropped EXE 1 IoCs
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Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext 1 IoCs
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Suspicious behavior: EnumeratesProcesses 4 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\YKRAB010B_KHE_Preminary Packing List.xlsx.exe"C:\Users\Admin\AppData\Local\Temp\YKRAB010B_KHE_Preminary Packing List.xlsx.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
4KB
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Filesize
44KB
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Filesize
4KB
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Filesize
6.9MB
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Filesize
4KB
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Filesize
132KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
6.9MB
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Filesize
240KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB