Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
04-06-2024 01:45
Static task
static1
Behavioral task
behavioral1
Sample
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe
Resource
win7-20240508-en
General
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Target
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe
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Size
712KB
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MD5
38d30f05e8c4ad2e0061948d66e245b1
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SHA1
1837d9e6f35f9a67a6c4909020f737050bbb7ba7
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SHA256
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa
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SHA512
f05579219a0761e558bd9ca96feafa697791a8fba153b7ccf8bfb2169ff52dabe286bb390282f894d74be9862161cca0d86a33340e6b0c26932da6402e2ac3a3
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SSDEEP
12288:LVmKt/rFfa7mlaGLcuz2PUPCRYDdhKmmVF5jyvgBC7kQW5gWR2ZQ2O4dh1:8KN5imJyPsCRYD3K1X2vCHQykZQ8dh1
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.merlinmotorworks.com - Port:
587 - Username:
[email protected] - Password:
Merlin1080S - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Processes:
powershell.exepowershell.exepid Process 2676 powershell.exe 2744 powershell.exe -
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 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 2 ip-api.com -
Suspicious use of SetThreadContext 1 IoCs
Processes:
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exedescription pid Process procid_target PID 2036 set thread context of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 4 IoCs
Processes:
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exepowershell.exepowershell.exepid Process 2004 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 2004 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 2744 powershell.exe 2676 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exepowershell.exepowershell.exedescription pid Process Token: SeDebugPrivilege 2004 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe Token: SeDebugPrivilege 2744 powershell.exe Token: SeDebugPrivilege 2676 powershell.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exedescription pid Process procid_target PID 2036 wrote to memory of 2676 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 28 PID 2036 wrote to memory of 2676 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 28 PID 2036 wrote to memory of 2676 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 28 PID 2036 wrote to memory of 2676 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 28 PID 2036 wrote to memory of 2744 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 30 PID 2036 wrote to memory of 2744 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 30 PID 2036 wrote to memory of 2744 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 30 PID 2036 wrote to memory of 2744 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 30 PID 2036 wrote to memory of 2752 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 32 PID 2036 wrote to memory of 2752 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 32 PID 2036 wrote to memory of 2752 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 32 PID 2036 wrote to memory of 2752 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 32 PID 2036 wrote to memory of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34 PID 2036 wrote to memory of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34 PID 2036 wrote to memory of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34 PID 2036 wrote to memory of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34 PID 2036 wrote to memory of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34 PID 2036 wrote to memory of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34 PID 2036 wrote to memory of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34 PID 2036 wrote to memory of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34 PID 2036 wrote to memory of 2004 2036 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2676
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YRcUAyKHnV.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2744
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YRcUAyKHnV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp53AC.tmp"2⤵
- Creates scheduled task(s)
PID:2752
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C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2004
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5ee49dac15cc5ab8ed1bc2ff849f670fa
SHA13d37b87ae0e62bbf2abbc5cfc8676cb1eff2f4f7
SHA25630b468500b893c65a923e6b5a32dcc97b62a636e26129017f9e3d595d0c70e1b
SHA5124a2c040b49826afd58dc2ea84170647b1d9a15475d76e4708fe6870b115cc34f96f4e6a690418a34817ecc276082045e5cd4ee0cfe0cc71c3694b664aa0119de
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD5c17ffb9d20e5453b2911f6734a619a2b
SHA1aa5f14571d6a8034f1e7d29e1c039325f8518a38
SHA256649f4524215c4ee1bc7e35abd54c2032165199b11617d3f32e9e7c11b764bc53
SHA512f20dcccd8edaefce36861d39aeacd733e229ed1d26516b8168520b0eb10123df480953c46d1871a0dcf7abb038dbe67f6733c3967afd9a388fdc4cc519ee0e6f