Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-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
Protocol: smtp- Host:
mail.merlinmotorworks.com - Port:
587 - Username:
[email protected] - Password:
Merlin1080S
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 4636 powershell.exe 3304 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.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 29 ip-api.com -
Suspicious use of SetThreadContext 1 IoCs
Processes:
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exedescription pid Process procid_target PID 4524 set thread context of 2736 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 103 -
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 9 IoCs
Processes:
powershell.exepowershell.exe27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exepid Process 4636 powershell.exe 4636 powershell.exe 3304 powershell.exe 3304 powershell.exe 2736 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 2736 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 2736 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 4636 powershell.exe 3304 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
powershell.exepowershell.exe27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exedescription pid Process Token: SeDebugPrivilege 4636 powershell.exe Token: SeDebugPrivilege 3304 powershell.exe Token: SeDebugPrivilege 2736 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exedescription pid Process procid_target PID 4524 wrote to memory of 4636 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 97 PID 4524 wrote to memory of 4636 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 97 PID 4524 wrote to memory of 4636 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 97 PID 4524 wrote to memory of 3304 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 99 PID 4524 wrote to memory of 3304 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 99 PID 4524 wrote to memory of 3304 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 99 PID 4524 wrote to memory of 4016 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 100 PID 4524 wrote to memory of 4016 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 100 PID 4524 wrote to memory of 4016 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 100 PID 4524 wrote to memory of 2736 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 103 PID 4524 wrote to memory of 2736 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 103 PID 4524 wrote to memory of 2736 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 103 PID 4524 wrote to memory of 2736 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 103 PID 4524 wrote to memory of 2736 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 103 PID 4524 wrote to memory of 2736 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 103 PID 4524 wrote to memory of 2736 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 103 PID 4524 wrote to memory of 2736 4524 27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe 103
Processes
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C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"C:\Users\Admin\AppData\Local\Temp\27b38e7f384f2500f598c68d451d3abebbea3b30c7f65505a870f7819018d5aa.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4524 -
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:4636
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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:3304
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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\tmp7474.tmp"2⤵
- Creates scheduled task(s)
PID:4016
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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:2736
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD5ab436ca73b62e0677a54d52005035e8f
SHA174df163b6d5e724990a298f01de14ee7d59f1e74
SHA25692e98b08e2cb517244b4d3c6ac822381a5aded0045bcde5eaf3da6ffca3042af
SHA512f2cfa3dedb55246e47456ecbecceb9c4f1987fad14a36e14e0d2c9ec372e66dae5abcb87e32f161a72bb738fc483ee0ac1f0883ad7345bfadd4506784571e327
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD53769d3a99e81099d4505994d358ef550
SHA1ff16c1a265d3a5a2879743b294da8b13e08e4d3c
SHA256c3455bbbdb6620fab0201a4fac48208a3851d756afde2d8ed4d9a8e6fab570a6
SHA5120f9711fcbfb45b0befb2b5183ee398c668383933a47b4117d561ef039fbf433784abdc1e5cf325e159680f3b707de3e7dc23e677d5334d8ed6f172eb322a3d7a