Analysis
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max time kernel
90s -
max time network
48s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
12-07-2022 14:32
Static task
static1
Behavioral task
behavioral1
Sample
SOA APRIL.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
SOA APRIL.exe
Resource
win10v2004-20220414-en
General
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Target
SOA APRIL.exe
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Size
414KB
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MD5
8cf823ee0766126638d33918383ca5d8
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SHA1
3b215b084b9ff049a860fc29108f62c4b6d2133b
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SHA256
6de7efc9e04cb4db0acc603a7ed700b186d0545acd0e8e84a1d8cce668202dc8
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SHA512
41cd0278ebb15faddd178fb826e8dc74021980f09b94ff785b1b6d88d5504c2e7b37450484666fd7a00e3c3e865459ace696c41ad84e4d0630d1ef893e93ed94
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.cpworldindia.com - Port:
587 - Username:
import.cs@ahd.cpworldindia.com - Password:
imprtcs@2019
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
Processes:
resource yara_rule behavioral1/memory/1800-56-0x0000000000590000-0x0000000000598000-memory.dmp coreentity -
AgentTesla payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/1680-63-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1680-64-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1680-65-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1680-66-0x000000000044C91E-mapping.dmp family_agenttesla behavioral1/memory/1680-68-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1680-70-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla -
ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
Processes:
resource yara_rule behavioral1/memory/1800-57-0x00000000043F0000-0x0000000004448000-memory.dmp rezer0 -
Disables Task Manager via registry modification
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Drops file in Drivers directory 1 IoCs
Processes:
SOA APRIL.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts SOA APRIL.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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
SOA APRIL.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 SOA APRIL.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 SOA APRIL.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 SOA APRIL.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
SOA APRIL.exedescription pid process target process PID 1800 set thread context of 1680 1800 SOA APRIL.exe SOA APRIL.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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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Modifies registry key 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
SOA APRIL.exeSOA APRIL.exepid process 1800 SOA APRIL.exe 1680 SOA APRIL.exe 1680 SOA APRIL.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
SOA APRIL.exeSOA APRIL.exedescription pid process Token: SeDebugPrivilege 1800 SOA APRIL.exe Token: SeDebugPrivilege 1680 SOA APRIL.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
SOA APRIL.exeSOA APRIL.exedescription pid process target process PID 1800 wrote to memory of 996 1800 SOA APRIL.exe schtasks.exe PID 1800 wrote to memory of 996 1800 SOA APRIL.exe schtasks.exe PID 1800 wrote to memory of 996 1800 SOA APRIL.exe schtasks.exe PID 1800 wrote to memory of 996 1800 SOA APRIL.exe schtasks.exe PID 1800 wrote to memory of 1680 1800 SOA APRIL.exe SOA APRIL.exe PID 1800 wrote to memory of 1680 1800 SOA APRIL.exe SOA APRIL.exe PID 1800 wrote to memory of 1680 1800 SOA APRIL.exe SOA APRIL.exe PID 1800 wrote to memory of 1680 1800 SOA APRIL.exe SOA APRIL.exe PID 1800 wrote to memory of 1680 1800 SOA APRIL.exe SOA APRIL.exe PID 1800 wrote to memory of 1680 1800 SOA APRIL.exe SOA APRIL.exe PID 1800 wrote to memory of 1680 1800 SOA APRIL.exe SOA APRIL.exe PID 1800 wrote to memory of 1680 1800 SOA APRIL.exe SOA APRIL.exe PID 1800 wrote to memory of 1680 1800 SOA APRIL.exe SOA APRIL.exe PID 1680 wrote to memory of 452 1680 SOA APRIL.exe REG.exe PID 1680 wrote to memory of 452 1680 SOA APRIL.exe REG.exe PID 1680 wrote to memory of 452 1680 SOA APRIL.exe REG.exe PID 1680 wrote to memory of 452 1680 SOA APRIL.exe REG.exe PID 1680 wrote to memory of 1004 1680 SOA APRIL.exe netsh.exe PID 1680 wrote to memory of 1004 1680 SOA APRIL.exe netsh.exe PID 1680 wrote to memory of 1004 1680 SOA APRIL.exe netsh.exe PID 1680 wrote to memory of 1004 1680 SOA APRIL.exe netsh.exe -
outlook_office_path 1 IoCs
Processes:
SOA APRIL.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 SOA APRIL.exe -
outlook_win_path 1 IoCs
Processes:
SOA APRIL.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 SOA APRIL.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\SOA APRIL.exe"C:\Users\Admin\AppData\Local\Temp\SOA APRIL.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FzcrWS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp31D.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\SOA APRIL.exe"{path}"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f3⤵
- Modifies registry key
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp31D.tmpFilesize
1KB
MD514d6dd7fd4cbc5a808cbaa4d88f20312
SHA1474cedd366d6691b96d29581c7c606e5f217608b
SHA256e994b340ec41b58072f693a1fbcef7ef0005c196f8d715518fd8af3c1a8ef2d9
SHA512a4dd325dd0c9fae25e0130a7b0ca933dbf669001139968df4e0d01d03b6042d59fce1902424155bf324fa1ddec8b7f1560465b117468ae63cff090ce6f13ea14
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memory/452-72-0x0000000000000000-mapping.dmp
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memory/996-58-0x0000000000000000-mapping.dmp
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memory/1004-73-0x0000000000000000-mapping.dmp
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memory/1680-63-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1680-60-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1680-61-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1680-64-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1680-65-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1680-66-0x000000000044C91E-mapping.dmp
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memory/1680-68-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1680-70-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1800-57-0x00000000043F0000-0x0000000004448000-memory.dmpFilesize
352KB
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memory/1800-54-0x0000000000A20000-0x0000000000A8E000-memory.dmpFilesize
440KB
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memory/1800-56-0x0000000000590000-0x0000000000598000-memory.dmpFilesize
32KB
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memory/1800-55-0x0000000074E91000-0x0000000074E93000-memory.dmpFilesize
8KB