Analysis
- max time kernel
144s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220331-en - submitted
13/04/2022, 15:19
Static task
static1
Behavioral task
behavioral1
Sample
CIELHKGAE0003561816.exe
Resource
win7-20220331-en
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
CIELHKGAE0003561816.exe
Resource
win10v2004-20220331-en
0 signatures
0 seconds
General
- Target CIELHKGAE0003561816.exe
- Size 894KB
- Sample220413-sp6adacgbr
- SHA256 56cea0a1ff889dc76f6f50d21bec9e36fd32f15db170f8e6c1629ccb37eb20b0
- MD5 8783d9b7530dbd144b92ea0439bfd8c8
- SHA1 ae973fd1a66afc0902afd1cf79ccc6a1d4969159
- SHA512 1543a2eaf4e77e20e9f127e518149984238f8c6f956912698b27b59c57c387ae7fa080af6dc654b62b69a68260225bd32af07c958a487fa0f29e2dc40d587e1f
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
-
agenttesla
C2
-
https://api.telegram.org/bot1611551445:AAFDJ3yQMlB3zXJGib2_TFkq1jedBMj3GTw/sendDocument
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 1 IoCs
resource yara_rule behavioral2/memory/2496-131-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla - Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\system32\drivers\etc\hosts CIELHKGAE0003561816.exe - Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-157025953-3125636059-437143553-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CIELHKGAE0003561816.exe Key opened \REGISTRY\USER\S-1-5-21-157025953-3125636059-437143553-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CIELHKGAE0003561816.exe Key opened \REGISTRY\USER\S-1-5-21-157025953-3125636059-437143553-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CIELHKGAE0003561816.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-157025953-3125636059-437143553-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe" CIELHKGAE0003561816.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2236 set thread context of 2496 2236 CIELHKGAE0003561816.exe 86 - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2496 CIELHKGAE0003561816.exe 2496 CIELHKGAE0003561816.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2496 CIELHKGAE0003561816.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2236 wrote to memory of 2496 2236 CIELHKGAE0003561816.exe 86 PID 2236 wrote to memory of 2496 2236 CIELHKGAE0003561816.exe 86 PID 2236 wrote to memory of 2496 2236 CIELHKGAE0003561816.exe 86 PID 2236 wrote to memory of 2496 2236 CIELHKGAE0003561816.exe 86 PID 2236 wrote to memory of 2496 2236 CIELHKGAE0003561816.exe 86 PID 2236 wrote to memory of 2496 2236 CIELHKGAE0003561816.exe 86 PID 2236 wrote to memory of 2496 2236 CIELHKGAE0003561816.exe 86 PID 2236 wrote to memory of 2496 2236 CIELHKGAE0003561816.exe 86 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-157025953-3125636059-437143553-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CIELHKGAE0003561816.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-157025953-3125636059-437143553-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CIELHKGAE0003561816.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\CIELHKGAE0003561816.exe"C:\Users\Admin\AppData\Local\Temp\CIELHKGAE0003561816.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2236 -
C:\Users\Admin\AppData\Local\Temp\CIELHKGAE0003561816.exe"C:\Users\Admin\AppData\Local\Temp\CIELHKGAE0003561816.exe"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2496
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\CIELHKGAE0003561816.exe.log
- Size 1KB
- SHA256 8d7143472e7cf3a40f46c6346251661e10fe3a932321cff14190648ee3d9c02f
- MD5 3aea5c16a0e7b995983bd1771d5ea11d
- SHA1 5ce845c82ace7946cec271a8bac45572b977419c
- SHA512 4d0949cc3c0b7bc19b94a7166fb1a528c5833773b4b577f1730c4aab93ec03f3d72714ebf8a103f2a6ab4f97abef2945e78c91d464885fb4f1f9c584d7a1b243
- MD5 SHA1 SHA512