Analysis
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max time kernel
64s -
max time network
125s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
09-11-2020 19:37
General
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Target
S_0004983002218_07_05_2020.exe
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Size
538KB
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MD5
e0bf3b5b7e427bf37687c7138fad0ed6
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SHA1
06982a0b678a1fdba05516919dfe775865739778
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SHA256
403ebe632490ce66b85d75f17ae996cfd0a89294e2c2cce1bcef66b5d4278a18
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SHA512
a5d891f820cb96dfdf3b2c990b5b244dad30235135d58d48d4ea10c06544e04cfc3c51141526394d23ce344bc9a11e9085d408febd000a2a490b165938a9274d
Malware Config
Extracted
Protocol: smtp- Host:
mail.reacsa.com.mx - Port:
587 - Username:
sucursal_puebla@reacsa.com.mx - Password:
(MzImXmp2u)!
Extracted
agenttesla
Protocol: smtp- Host:
mail.reacsa.com.mx - Port:
587 - Username:
sucursal_puebla@reacsa.com.mx - Password:
(MzImXmp2u)!
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
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AgentTesla Payload 2 IoCs
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rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
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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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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 3 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of SetWindowsHookEx 2 IoCs
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Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\S_0004983002218_07_05_2020.exe"C:\Users\Admin\AppData\Local\Temp\S_0004983002218_07_05_2020.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YAbRgkjnlXOSYZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5E71.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\S_0004983002218_07_05_2020.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\S_0004983002218_07_05_2020.exe.logMD5
b4f7a6a57cb46d94b72410eb6a6d45a9
SHA169f3596ffa027202d391444b769ceea0ae14c5f7
SHA25623994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b
SHA512be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c
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C:\Users\Admin\AppData\Local\Temp\tmp5E71.tmpMD5
0e80635caa09844b0d33d6cae5a25e69
SHA1359ca3dc74dea1f6a8d9ca9da66503bc9c317702
SHA25645056da5941e33487e0fecb874253840bc4eaf6cb9fbfc7e8d3834703a13a615
SHA5129d17653807962fb52ad3b8c2a60ee1adc243f1d95fe8a5c88f61886ba7fc7322d21596a68640c32fadcf369da8236c86b2272481df9b4fc2c1dcd07bfc7cd1d6
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memory/984-21-0x0000000005E70000-0x0000000005E71000-memory.dmpFilesize
4KB
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memory/984-20-0x0000000005370000-0x0000000005371000-memory.dmpFilesize
4KB
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memory/984-15-0x0000000073FA0000-0x000000007468E000-memory.dmpFilesize
6.9MB
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memory/984-13-0x000000000044A67E-mapping.dmp
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memory/984-12-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1768-22-0x0000000000000000-mapping.dmp
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memory/3284-10-0x0000000000000000-mapping.dmp
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memory/4696-5-0x0000000007990000-0x0000000007991000-memory.dmpFilesize
4KB
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memory/4696-9-0x000000000B3C0000-0x000000000B3C1000-memory.dmpFilesize
4KB
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memory/4696-8-0x000000000B2C0000-0x000000000B311000-memory.dmpFilesize
324KB
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memory/4696-7-0x0000000004E80000-0x0000000004E83000-memory.dmpFilesize
12KB
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memory/4696-6-0x00000000055B0000-0x00000000055B1000-memory.dmpFilesize
4KB
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memory/4696-0-0x0000000073FA0000-0x000000007468E000-memory.dmpFilesize
6.9MB
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memory/4696-4-0x0000000007E90000-0x0000000007E91000-memory.dmpFilesize
4KB
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memory/4696-3-0x0000000005360000-0x00000000053BB000-memory.dmpFilesize
364KB
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memory/4696-1-0x0000000000B30000-0x0000000000B31000-memory.dmpFilesize
4KB