Analysis
- max time kernel
143s - max time network
129s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
26/05/2023, 07:02
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
8355916 (61kb) .PDF_524256146100.exe
Resource
win7-20230220-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
8355916 (61kb) .PDF_524256146100.exe
Resource
win10v2004-20230220-en
13 signatures
150 seconds
General
- Target 8355916 (61kb) .PDF_524256146100.exe
- Size 728KB
- Sample230526-httr2aec38
- SHA256 be06d327419c53584beff876b97e9620c5e47b1cdca45d895d059cc2ed3644f7
- MD5 f348177b50f32cdcbe8d643f9989d3f6
- SHA1 e91056ec6b3cf0fb316e6e18aabfbb7a083167d4
- SHA512 a5d4d1c26e0685b42f5cefa7f7e95a89c24dc2587ec93f5ed1e23fe7515247d36f3aeb24fab955024a4a09f9a5a1e601fb7fb71f60fbde20cc5bfbcb9b65ed2e
- SSDEEP 12288:h7z5GoJiGaq5au4gMSEgA//G9uUaWC9ybGZY+vh2AXBEOc2:95GoR5azgMTgyOPUHp2AXBK
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
-
agenttesla
C2
-
https://api.telegram.org/bot1360033246:AAF6H8m6YrL09doyxtsvJzZ_cIl__BCF4aU/sendDocument
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla payload 1 IoCs
resource yara_rule behavioral2/memory/4468-140-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla - 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-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8355916 (61kb) .PDF_524256146100.exe Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8355916 (61kb) .PDF_524256146100.exe Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8355916 (61kb) .PDF_524256146100.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kmk = "C:\\Users\\Admin\\AppData\\Roaming\\kmk\\kmk.exe" 8355916 (61kb) .PDF_524256146100.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3116 set thread context of 4468 3116 8355916 (61kb) .PDF_524256146100.exe 91 - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3116 8355916 (61kb) .PDF_524256146100.exe 3116 8355916 (61kb) .PDF_524256146100.exe 4468 8355916 (61kb) .PDF_524256146100.exe 4468 8355916 (61kb) .PDF_524256146100.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3116 8355916 (61kb) .PDF_524256146100.exe Token: SeDebugPrivilege 4468 8355916 (61kb) .PDF_524256146100.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4468 8355916 (61kb) .PDF_524256146100.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3116 wrote to memory of 4468 3116 8355916 (61kb) .PDF_524256146100.exe 91 PID 3116 wrote to memory of 4468 3116 8355916 (61kb) .PDF_524256146100.exe 91 PID 3116 wrote to memory of 4468 3116 8355916 (61kb) .PDF_524256146100.exe 91 PID 3116 wrote to memory of 4468 3116 8355916 (61kb) .PDF_524256146100.exe 91 PID 3116 wrote to memory of 4468 3116 8355916 (61kb) .PDF_524256146100.exe 91 PID 3116 wrote to memory of 4468 3116 8355916 (61kb) .PDF_524256146100.exe 91 PID 3116 wrote to memory of 4468 3116 8355916 (61kb) .PDF_524256146100.exe 91 PID 3116 wrote to memory of 4468 3116 8355916 (61kb) .PDF_524256146100.exe 91 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8355916 (61kb) .PDF_524256146100.exe - outlook_win_path 1 IoCs
description 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 8355916 (61kb) .PDF_524256146100.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\8355916 (61kb) .PDF_524256146100.exe"C:\Users\Admin\AppData\Local\Temp\8355916 (61kb) .PDF_524256146100.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3116 -
C:\Users\Admin\AppData\Local\Temp\8355916 (61kb) .PDF_524256146100.exe"C:\Users\Admin\AppData\Local\Temp\8355916 (61kb) .PDF_524256146100.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:4468
-
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\8355916 (61kb) .PDF_524256146100.exe.log
- Size 1KB
- SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
- MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
- SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
- SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
- MD5 SHA1 SHA512