Analysis
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max time kernel
90s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
20-05-2022 23:15
Static task
static1
Behavioral task
behavioral1
Sample
doc2022052000010030010101.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
doc2022052000010030010101.exe
Resource
win10v2004-20220414-en
General
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Target
doc2022052000010030010101.exe
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Size
24KB
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MD5
494e6c34de631134bff5a01092583701
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SHA1
56cda18a9b4dccf0fec27aa5ff208f12e7ff8d5a
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SHA256
11d62aa2e8c63691f11d88d485213cfaa82b48af8c505e7232beb9f2e5fc2f6a
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SHA512
ad32e62388246ed088d27a03a83e26de0ca9382209322ab47024ff8b42da24165d1a43941c7ac7a6be4563efedf3a147c787f128ea12f03f88b1c54324371b71
Malware Config
Extracted
agenttesla
https://api.telegram.org/bot5310370668:AAEdB2nfvvFj53YoaxJ-AleA2m93WUxxyM0/sendDocument
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
doc2022052000010030010101.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation doc2022052000010030010101.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
InstallUtil.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
doc2022052000010030010101.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Squri = "\"C:\\Users\\Admin\\AppData\\Roaming\\Obzdxbs\\Squri.exe\"" doc2022052000010030010101.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
doc2022052000010030010101.exedescription pid process target process PID 3304 set thread context of 2216 3304 doc2022052000010030010101.exe InstallUtil.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3736 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
doc2022052000010030010101.exeInstallUtil.exepid process 3304 doc2022052000010030010101.exe 3304 doc2022052000010030010101.exe 2216 InstallUtil.exe 2216 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
doc2022052000010030010101.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 3304 doc2022052000010030010101.exe Token: SeDebugPrivilege 2216 InstallUtil.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
doc2022052000010030010101.execmd.exedescription pid process target process PID 3304 wrote to memory of 4548 3304 doc2022052000010030010101.exe cmd.exe PID 3304 wrote to memory of 4548 3304 doc2022052000010030010101.exe cmd.exe PID 3304 wrote to memory of 4548 3304 doc2022052000010030010101.exe cmd.exe PID 4548 wrote to memory of 3736 4548 cmd.exe timeout.exe PID 4548 wrote to memory of 3736 4548 cmd.exe timeout.exe PID 4548 wrote to memory of 3736 4548 cmd.exe timeout.exe PID 3304 wrote to memory of 2216 3304 doc2022052000010030010101.exe InstallUtil.exe PID 3304 wrote to memory of 2216 3304 doc2022052000010030010101.exe InstallUtil.exe PID 3304 wrote to memory of 2216 3304 doc2022052000010030010101.exe InstallUtil.exe PID 3304 wrote to memory of 2216 3304 doc2022052000010030010101.exe InstallUtil.exe PID 3304 wrote to memory of 2216 3304 doc2022052000010030010101.exe InstallUtil.exe PID 3304 wrote to memory of 2216 3304 doc2022052000010030010101.exe InstallUtil.exe PID 3304 wrote to memory of 2216 3304 doc2022052000010030010101.exe InstallUtil.exe PID 3304 wrote to memory of 2216 3304 doc2022052000010030010101.exe InstallUtil.exe -
outlook_office_path 1 IoCs
Processes:
InstallUtil.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe -
outlook_win_path 1 IoCs
Processes:
InstallUtil.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\doc2022052000010030010101.exe"C:\Users\Admin\AppData\Local\Temp\doc2022052000010030010101.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 202⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 203⤵
- Delays execution with timeout.exe
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2216-136-0x0000000000000000-mapping.dmp
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memory/2216-137-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/2216-138-0x0000000005230000-0x00000000052CC000-memory.dmpFilesize
624KB
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memory/2216-139-0x0000000005E00000-0x0000000005E66000-memory.dmpFilesize
408KB
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memory/2216-140-0x00000000064D0000-0x0000000006520000-memory.dmpFilesize
320KB
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memory/3304-130-0x0000000000210000-0x000000000021C000-memory.dmpFilesize
48KB
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memory/3304-131-0x0000000005090000-0x0000000005634000-memory.dmpFilesize
5.6MB
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memory/3304-132-0x0000000004BC0000-0x0000000004C52000-memory.dmpFilesize
584KB
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memory/3304-133-0x0000000004D60000-0x0000000004D6A000-memory.dmpFilesize
40KB
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memory/3736-135-0x0000000000000000-mapping.dmp
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memory/4548-134-0x0000000000000000-mapping.dmp