Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
31-03-2023 10:56
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20230220-en
General
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Target
tmp.exe
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Size
778KB
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MD5
992d6ad7f5365199de9a1a789b08c358
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SHA1
17d8db7c926cb9be034d5ea544ca106bb41619d9
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SHA256
2bda91406a11bcfa7233b2798297164c5ffe514b4100af0062fc166b9ab55b60
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SHA512
12fed10bbdfff61275564151bbd51453352a0d102b837c621f1f12806de26bba8515ba43b136ef16551cd70a24d9b4debd2a2d039345ed517e02dee507891b52
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SSDEEP
12288:DtlhARwKdJVZz5d7n/XBrNU4QpuLIXD2DJdpCTTQDTVh7DhGZ7jnzVs/Mbd4IA:yBVZ99XB6hRXDwJvCTUDBh/QHzVUI
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
server320.web-hosting.com - Port:
587 - Username:
admin@igls.cc - Password:
lagos@123 - Email To:
nel@igls.cc
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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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
Processes:
tmp.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.exe Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.exe Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
tmp.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RMBJLaF = "C:\\Users\\Admin\\AppData\\Roaming\\RMBJLaF\\RMBJLaF.exe" tmp.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 32 api.ipify.org 33 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
tmp.exedescription pid process target process PID 4296 set thread context of 4680 4296 tmp.exe tmp.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
tmp.exepid process 4296 tmp.exe 4296 tmp.exe 4296 tmp.exe 4296 tmp.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
tmp.exetmp.exedescription pid process Token: SeDebugPrivilege 4296 tmp.exe Token: SeDebugPrivilege 4680 tmp.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
tmp.exedescription pid process target process PID 4296 wrote to memory of 4324 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4324 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4324 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4680 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4680 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4680 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4680 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4680 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4680 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4680 4296 tmp.exe tmp.exe PID 4296 wrote to memory of 4680 4296 tmp.exe tmp.exe -
outlook_office_path 1 IoCs
Processes:
tmp.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.exe -
outlook_win_path 1 IoCs
Processes:
tmp.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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\tmp.exe.logFilesize
1KB
MD5b7b9acb869ccc7f7ecb5304ec0384dee
SHA16a90751c95817903ee833d59a0abbef425a613b3
SHA2568cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4
SHA5127bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764
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memory/4296-139-0x0000000007C80000-0x0000000007D1C000-memory.dmpFilesize
624KB
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memory/4296-135-0x00000000056F0000-0x0000000005782000-memory.dmpFilesize
584KB
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memory/4296-136-0x0000000005850000-0x0000000005860000-memory.dmpFilesize
64KB
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memory/4296-137-0x00000000057D0000-0x00000000057DA000-memory.dmpFilesize
40KB
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memory/4296-138-0x0000000005850000-0x0000000005860000-memory.dmpFilesize
64KB
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memory/4296-133-0x0000000000C80000-0x0000000000D48000-memory.dmpFilesize
800KB
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memory/4296-134-0x0000000005BA0000-0x0000000006144000-memory.dmpFilesize
5.6MB
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memory/4680-140-0x0000000000400000-0x0000000000430000-memory.dmpFilesize
192KB
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memory/4680-143-0x00000000053F0000-0x0000000005456000-memory.dmpFilesize
408KB
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memory/4680-144-0x00000000054F0000-0x0000000005500000-memory.dmpFilesize
64KB
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memory/4680-146-0x0000000006F20000-0x0000000006F70000-memory.dmpFilesize
320KB
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memory/4680-147-0x0000000007250000-0x0000000007412000-memory.dmpFilesize
1.8MB
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memory/4680-148-0x00000000054F0000-0x0000000005500000-memory.dmpFilesize
64KB