Analysis
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max time kernel
149s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
20/06/2024, 03:05
Static task
static1
Behavioral task
behavioral1
Sample
chem-03240.pdf.exe
Resource
win7-20240221-en
General
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Target
chem-03240.pdf.exe
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Size
975KB
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MD5
fb037c0e0a26a6399cc3c22f24d819db
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SHA1
9da8dfc260523640c23d77bd37cc012af7275e09
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SHA256
c5e436daea517264f270beba101c5d2ae9d9b25a72c8c4ed049239ecddb7fcc8
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SHA512
a23fc689ca44c46ebc78eaf39dfbe4aac5b366cffe0b43cfbf2214f02a67c19b8a9977b5cf1d5bb1374fca9f335245a7742907f58a152008dbc0de941fd1f62e
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SSDEEP
24576:hbtQQlz5uaQ9pOXsSdsSSd6MsxpnmhB4nYJ/Z:hbN1EjpOXsksSbfdYL
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
proglass.com.sg - Port:
587 - Username:
[email protected] - Password:
NiconPay$ - 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 1108 powershell.exe 3944 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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation chem-03240.pdf.exe -
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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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4672 set thread context of 3824 4672 chem-03240.pdf.exe 92 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2112 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
pid Process 4672 chem-03240.pdf.exe 1108 powershell.exe 3944 powershell.exe 4672 chem-03240.pdf.exe 4672 chem-03240.pdf.exe 4672 chem-03240.pdf.exe 1108 powershell.exe 3824 chem-03240.pdf.exe 3824 chem-03240.pdf.exe 3944 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4672 chem-03240.pdf.exe Token: SeDebugPrivilege 1108 powershell.exe Token: SeDebugPrivilege 3944 powershell.exe Token: SeDebugPrivilege 3824 chem-03240.pdf.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3824 chem-03240.pdf.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4672 wrote to memory of 1108 4672 chem-03240.pdf.exe 85 PID 4672 wrote to memory of 1108 4672 chem-03240.pdf.exe 85 PID 4672 wrote to memory of 1108 4672 chem-03240.pdf.exe 85 PID 4672 wrote to memory of 3944 4672 chem-03240.pdf.exe 87 PID 4672 wrote to memory of 3944 4672 chem-03240.pdf.exe 87 PID 4672 wrote to memory of 3944 4672 chem-03240.pdf.exe 87 PID 4672 wrote to memory of 2112 4672 chem-03240.pdf.exe 89 PID 4672 wrote to memory of 2112 4672 chem-03240.pdf.exe 89 PID 4672 wrote to memory of 2112 4672 chem-03240.pdf.exe 89 PID 4672 wrote to memory of 5032 4672 chem-03240.pdf.exe 91 PID 4672 wrote to memory of 5032 4672 chem-03240.pdf.exe 91 PID 4672 wrote to memory of 5032 4672 chem-03240.pdf.exe 91 PID 4672 wrote to memory of 3824 4672 chem-03240.pdf.exe 92 PID 4672 wrote to memory of 3824 4672 chem-03240.pdf.exe 92 PID 4672 wrote to memory of 3824 4672 chem-03240.pdf.exe 92 PID 4672 wrote to memory of 3824 4672 chem-03240.pdf.exe 92 PID 4672 wrote to memory of 3824 4672 chem-03240.pdf.exe 92 PID 4672 wrote to memory of 3824 4672 chem-03240.pdf.exe 92 PID 4672 wrote to memory of 3824 4672 chem-03240.pdf.exe 92 PID 4672 wrote to memory of 3824 4672 chem-03240.pdf.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4672 -
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\chem-03240.pdf.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1108
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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\jBIBnuQ.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3944
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jBIBnuQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6E69.tmp"2⤵
- Scheduled Task/Job: Scheduled Task
PID:2112
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C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"2⤵PID:5032
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C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3824
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD53d086a433708053f9bf9523e1d87a4e8
SHA1b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA2566f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
SHA512931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
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Filesize
18KB
MD538f863352b444d061f67b2ac28f03599
SHA1ac6c400e9ead0bfedab419fe71625770e0629027
SHA2560e9f4eef6251eef288a9ec9e0351fe24c5051b5949027a656a5779f74f122e74
SHA512cd73b24b08c626686bd4d33462c499b7ea5b0e650932a8aa3e7c4460629f8cfa7640bca226fe71720c24b81db2190430a52c96d2d42334f33b06adea7572c96a
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD50a2bd48b8e0269c0b3fa579d1002289e
SHA13266f75727eecca4eabe3c36cecdb30b28a36cb7
SHA25679b952a45b7ccf6d11937c23d1a8e9af81a64e7bc88dd5d10e6b5c73151f416b
SHA512bf0425419c4b849fc0da36d6b140a2c295a4ce6fb06323ea83c02c018de6aebaad10a8fa69cfa3eedc38d354ed4502b38c8ac6b2de11bde0ff580ee34a6e285c