Analysis
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max time kernel
145s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
14-01-2025 01:31
Static task
static1
Behavioral task
behavioral1
Sample
Ref#11310057.exe
Resource
win7-20240903-en
General
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Target
Ref#11310057.exe
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Size
145KB
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MD5
4695c58b4e2dd8c7865ccc0bc0693367
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SHA1
a8d4b077cd63843ad5305b063aa1d95a4f398eb7
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SHA256
3a56216ded9e2b6fae078b2c0beb9601d8404444818bf9e413884e3cd886d8f8
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SHA512
27de43000cdb506632ac01049d767fbd1ace0783d2914f0d16083458f6555474159fb4e5345cd0b6e18ec9ddff95e74678077910a4ceae500229084da9f366f6
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SSDEEP
3072:rqoBB1EMoND5/7CbiAGtt4mt2PRKjIUuppC/j:1RkFAGt9MJKYW
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
162.254.34.31 - Port:
587 - Username:
[email protected] - Password:
UBnnnstayQMK - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Agenttesla family
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Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
description pid Process procid_target PID 2104 created 3356 2104 Ref#11310057.exe 55 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation Ref#11310057.exe -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ilsucsfth.vbs Ref#11310057.exe -
Executes dropped EXE 1 IoCs
pid Process 2780 ckuv.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.
flow ioc 38 api.ipify.org 39 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2104 set thread context of 5364 2104 Ref#11310057.exe 91 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Ref#11310057.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ckuv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2104 Ref#11310057.exe 2104 Ref#11310057.exe 2104 Ref#11310057.exe 5364 InstallUtil.exe 5364 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2104 Ref#11310057.exe Token: SeDebugPrivilege 2780 ckuv.exe Token: SeDebugPrivilege 2104 Ref#11310057.exe Token: SeDebugPrivilege 5364 InstallUtil.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2104 wrote to memory of 2780 2104 Ref#11310057.exe 90 PID 2104 wrote to memory of 2780 2104 Ref#11310057.exe 90 PID 2104 wrote to memory of 2780 2104 Ref#11310057.exe 90 PID 2104 wrote to memory of 5364 2104 Ref#11310057.exe 91 PID 2104 wrote to memory of 5364 2104 Ref#11310057.exe 91 PID 2104 wrote to memory of 5364 2104 Ref#11310057.exe 91 PID 2104 wrote to memory of 5364 2104 Ref#11310057.exe 91 PID 2104 wrote to memory of 5364 2104 Ref#11310057.exe 91 PID 2104 wrote to memory of 5364 2104 Ref#11310057.exe 91 PID 2104 wrote to memory of 5364 2104 Ref#11310057.exe 91 PID 2104 wrote to memory of 5364 2104 Ref#11310057.exe 91
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3356
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C:\Users\Admin\AppData\Local\Temp\Ref#11310057.exe"C:\Users\Admin\AppData\Local\Temp\Ref#11310057.exe"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Checks computer location settings
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2104 -
C:\Users\Admin\AppData\Local\Temp\ckuv.exe"C:\Users\Admin\AppData\Local\Temp\ckuv.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2780
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5364
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
56KB
MD5cdd3d1bb178c391a905c40d2b292f4d6
SHA1bf7fce373510e8fac054703f879c5aac2e8ed584
SHA256f0881d1c9f9e086eb8d814e03cd6c01f357f0cae2627ff27e011104c6e88ccea
SHA512e089bc47342b8ffe798e665f3d248de711e704058717398b240809db261e5226ad748f80f7e45ae1bb7efa27196a9a520109cb633782394c90c13b0d79c0e41a