Analysis
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max time kernel
190s -
max time network
199s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 11:17
General
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Target
BL & Original Shipping Documents AWB-62987268.exe
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Size
731KB
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MD5
7236e60628c25d1b48ae9de6eb5e6b8c
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SHA1
486cab73374fc98b369a1caf19bc2fc7c9285ad1
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SHA256
8ac57ec0d32b453aa23a1c7149d5cd5695c8a99a9bd0b792bfc1411b1216c4da
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SHA512
32e489c7ad82171d9349d7a89191d222aa3f784e462589345f3d1a010e63c024cd08232844d529d3396b60c505b3ef35f9378cea2c6efdd094e4b94c58d72873
Malware Config
Extracted
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
drsaint1992101
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
drsaint1992101
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 1 IoCs
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Disables RegEdit via registry modification
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
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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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Program crash 1 IoCs
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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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Modifies registry key 1 TTPs 3 IoCs
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Suspicious behavior: EnumeratesProcesses 3 IoCs
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Suspicious behavior: RenamesItself 1 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 20 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\BL & Original Shipping Documents AWB-62987268.exe"C:\Users\Admin\AppData\Local\Temp\BL & Original Shipping Documents AWB-62987268.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CdKZXCSedTjRc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB277.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\BL & Original Shipping Documents AWB-62987268.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f3⤵
- Modifies registry key
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C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer / v NoRun / t REG_DWORD / d 1 / f3⤵
- Modifies registry key
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C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer / v NoControlPanel / t REG_DWORD / d 1 / f3⤵
- Modifies registry key
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4164 -s 21283⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4164 -ip 41641⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\BL & Original Shipping Documents AWB-62987268.exe.logFilesize
685B
MD564f7d1001f1b3c983776387519079574
SHA19696fb5ffd5597c12fc1ca6bcb7fe889f8cc9c2c
SHA256b7724fa480f240bb6e0131973d0f085d5fb0865677f277a2a306f4fa89c89485
SHA512bf81147d1a43290c845f788fbe633bf0ae8abff31a342b0278e525fdf65bd5294e797b3a11f375027e5b2c42d224459583d5a0e753f563d5034d4d7653d39eba
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C:\Users\Admin\AppData\Local\Temp\tmpB277.tmpFilesize
1KB
MD5e15ef74c3535491599071324783cf5b9
SHA14a2eac8a07b36efc82a784fa3a955252f3e10766
SHA256c0dac7ea75a5bbeba9ffdd822a0d90c974efea4cd09e70c83146469ef721289c
SHA512510c0d7961e13f8abf68c43e9b80d8679103d7d9c8a4b53d429a792e585bf3b8d5967a451382689d213fe80fcebbdc45e2327d9fde29c097063d363219a90e0e
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memory/1096-144-0x0000000000000000-mapping.dmp
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memory/2292-132-0x00000000056E0000-0x0000000005772000-memory.dmpFilesize
584KB
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memory/2292-133-0x00000000064D0000-0x0000000006656000-memory.dmpFilesize
1.5MB
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memory/2292-134-0x0000000005C40000-0x0000000005CDC000-memory.dmpFilesize
624KB
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memory/2292-130-0x0000000000C90000-0x0000000000D4E000-memory.dmpFilesize
760KB
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memory/2292-131-0x0000000005D90000-0x0000000006334000-memory.dmpFilesize
5.6MB
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memory/3428-142-0x0000000000000000-mapping.dmp
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memory/3864-143-0x0000000000000000-mapping.dmp
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memory/4164-141-0x0000000006B10000-0x0000000006B60000-memory.dmpFilesize
320KB
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memory/4164-140-0x0000000005DE0000-0x0000000005E46000-memory.dmpFilesize
408KB
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memory/4164-138-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/4164-137-0x0000000000000000-mapping.dmp
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memory/4956-135-0x0000000000000000-mapping.dmp