Analysis
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max time kernel
134s -
max time network
103s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
31-05-2024 07:41
Static task
static1
Behavioral task
behavioral1
Sample
Employee Handbook English.exe
Resource
win7-20240419-en
General
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Target
Employee Handbook English.exe
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Size
652KB
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MD5
6554cf839ea2e5749ee45c9dffe7b16f
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SHA1
dfa0c3d9e29d7498a7243b4137230049ba89fc0a
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SHA256
28b3c09f079c35e84e7cb01688b99e15dc105a0abb481294e796d1d70db030a1
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SHA512
c4332870bf03ec897cf5af0e18c33c8cd3e877c8bbc5dad9e552116ebf135774288e186e340c32cca1c0503f39144f21f1beb177542eef637052bc271cbf00fc
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SSDEEP
12288:JdJS4Vk1mSR1mmsXYyJu1FbrOXsCWhU7UyOg/dnK2ViSqjDDLy:pSckDRNBTv0ZWKQyOsdK2nqjH2
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
cemfa.com - Port:
587 - Username:
[email protected] - Password:
mohamed@cemfa - 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.
pid Process 3156 powershell.exe 960 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation Employee Handbook English.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4600 set thread context of 4000 4600 Employee Handbook English.exe 104 -
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.
pid Process 1388 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
pid Process 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 4600 Employee Handbook English.exe 960 powershell.exe 4600 Employee Handbook English.exe 4000 MSBuild.exe 4000 MSBuild.exe 3156 powershell.exe 960 powershell.exe 3156 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4600 Employee Handbook English.exe Token: SeDebugPrivilege 3156 powershell.exe Token: SeDebugPrivilege 960 powershell.exe Token: SeDebugPrivilege 4000 MSBuild.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 4600 wrote to memory of 960 4600 Employee Handbook English.exe 98 PID 4600 wrote to memory of 960 4600 Employee Handbook English.exe 98 PID 4600 wrote to memory of 960 4600 Employee Handbook English.exe 98 PID 4600 wrote to memory of 3156 4600 Employee Handbook English.exe 100 PID 4600 wrote to memory of 3156 4600 Employee Handbook English.exe 100 PID 4600 wrote to memory of 3156 4600 Employee Handbook English.exe 100 PID 4600 wrote to memory of 1388 4600 Employee Handbook English.exe 102 PID 4600 wrote to memory of 1388 4600 Employee Handbook English.exe 102 PID 4600 wrote to memory of 1388 4600 Employee Handbook English.exe 102 PID 4600 wrote to memory of 4000 4600 Employee Handbook English.exe 104 PID 4600 wrote to memory of 4000 4600 Employee Handbook English.exe 104 PID 4600 wrote to memory of 4000 4600 Employee Handbook English.exe 104 PID 4600 wrote to memory of 4000 4600 Employee Handbook English.exe 104 PID 4600 wrote to memory of 4000 4600 Employee Handbook English.exe 104 PID 4600 wrote to memory of 4000 4600 Employee Handbook English.exe 104 PID 4600 wrote to memory of 4000 4600 Employee Handbook English.exe 104 PID 4600 wrote to memory of 4000 4600 Employee Handbook English.exe 104
Processes
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C:\Users\Admin\AppData\Local\Temp\Employee Handbook English.exe"C:\Users\Admin\AppData\Local\Temp\Employee Handbook English.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4600 -
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\Employee Handbook English.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:960
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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\VhuFpqC.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3156
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VhuFpqC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE455.tmp"2⤵
- Creates scheduled task(s)
PID:1388
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4000
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
18KB
MD50a3cc63b074c8cc9ce4c486f49daaeb9
SHA12816b89a1f18feb7b81ba3195d32f8d9e042f89b
SHA256baa3d8394e8f084b4fa1c0654a20dafd508059e19f1f6fe39100fb65d3a9f8f4
SHA512adccdf11eba64892941178e0301d8126f542faec195206f1b77cd0d454ced9b20b6d4c0f90f1dd22885f9d4be43d012b052860d53ea0e4b5210d22d0b7612239
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD52167f59246b8c394bd64f85bc67a3281
SHA18533724f9fbe7cbe11644ce8741bb1ab640e0139
SHA256da27a19c3675e98b4883b1abfb466d63e7f1e1c22e2e3eda8f44f01e15400aac
SHA512502ffdf8768681a246a1b46556d4fb2fb7d8e2ba028d9b73758a6366ff993ba18d46a6126084007dd4bf8cdeefa944641dd5a34eaf28fff6684ba44446fbca2c