Analysis
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max time kernel
139s -
max time network
169s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 12:38
Static task
static1
Behavioral task
behavioral1
Sample
Scan copies of YR2020EXP02-005A.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
Scan copies of YR2020EXP02-005A.exe
Resource
win10v2004-20220812-en
General
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Target
Scan copies of YR2020EXP02-005A.exe
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Size
985KB
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MD5
7c997b40e724596134150d838380d8fc
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SHA1
4f352918c60a77f25b74d3bb48df397e7ad54a66
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SHA256
79fe46d2be00c4f28ed865d1fec837d8d34d16fdaf74b901d05018dc03e67686
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SHA512
dce5e073f67d554b4265dfa143074b1dc2887d3629d1800ce329871d593b709eb85f9a596097af3f8dd1f52ffdbecd15a86666ee8d8adc7654854c386a842a80
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SSDEEP
24576:1+gG7tqzU376CskFg/IyXt9hLJYdNmpmIkrgD968WlG6ZPnEmd+Qu:E7hekoXQmpmIkrgD96lTNnH8Qu
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.strictfacilityservices.com - Port:
587 - Username:
[email protected] - Password:
SFS!@#321 - 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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Scan copies of YR2020EXP02-005A.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation Scan copies of YR2020EXP02-005A.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:
Scan copies of YR2020EXP02-005A.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan copies of YR2020EXP02-005A.exe Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan copies of YR2020EXP02-005A.exe Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan copies of YR2020EXP02-005A.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 31 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Scan copies of YR2020EXP02-005A.exedescription pid process target process PID 4840 set thread context of 2000 4840 Scan copies of YR2020EXP02-005A.exe Scan copies of YR2020EXP02-005A.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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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
Scan copies of YR2020EXP02-005A.exeScan copies of YR2020EXP02-005A.exepid process 4840 Scan copies of YR2020EXP02-005A.exe 2000 Scan copies of YR2020EXP02-005A.exe 2000 Scan copies of YR2020EXP02-005A.exe 2000 Scan copies of YR2020EXP02-005A.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Scan copies of YR2020EXP02-005A.exeScan copies of YR2020EXP02-005A.exedescription pid process Token: SeDebugPrivilege 4840 Scan copies of YR2020EXP02-005A.exe Token: SeDebugPrivilege 2000 Scan copies of YR2020EXP02-005A.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Scan copies of YR2020EXP02-005A.exepid process 2000 Scan copies of YR2020EXP02-005A.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
Scan copies of YR2020EXP02-005A.exedescription pid process target process PID 4840 wrote to memory of 3744 4840 Scan copies of YR2020EXP02-005A.exe schtasks.exe PID 4840 wrote to memory of 3744 4840 Scan copies of YR2020EXP02-005A.exe schtasks.exe PID 4840 wrote to memory of 3744 4840 Scan copies of YR2020EXP02-005A.exe schtasks.exe PID 4840 wrote to memory of 2000 4840 Scan copies of YR2020EXP02-005A.exe Scan copies of YR2020EXP02-005A.exe PID 4840 wrote to memory of 2000 4840 Scan copies of YR2020EXP02-005A.exe Scan copies of YR2020EXP02-005A.exe PID 4840 wrote to memory of 2000 4840 Scan copies of YR2020EXP02-005A.exe Scan copies of YR2020EXP02-005A.exe PID 4840 wrote to memory of 2000 4840 Scan copies of YR2020EXP02-005A.exe Scan copies of YR2020EXP02-005A.exe PID 4840 wrote to memory of 2000 4840 Scan copies of YR2020EXP02-005A.exe Scan copies of YR2020EXP02-005A.exe PID 4840 wrote to memory of 2000 4840 Scan copies of YR2020EXP02-005A.exe Scan copies of YR2020EXP02-005A.exe PID 4840 wrote to memory of 2000 4840 Scan copies of YR2020EXP02-005A.exe Scan copies of YR2020EXP02-005A.exe PID 4840 wrote to memory of 2000 4840 Scan copies of YR2020EXP02-005A.exe Scan copies of YR2020EXP02-005A.exe -
outlook_office_path 1 IoCs
Processes:
Scan copies of YR2020EXP02-005A.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan copies of YR2020EXP02-005A.exe -
outlook_win_path 1 IoCs
Processes:
Scan copies of YR2020EXP02-005A.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan copies of YR2020EXP02-005A.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Scan copies of YR2020EXP02-005A.exe"C:\Users\Admin\AppData\Local\Temp\Scan copies of YR2020EXP02-005A.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4840 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gDqcOkt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp708C.tmp"2⤵
- Creates scheduled task(s)
PID:3744 -
C:\Users\Admin\AppData\Local\Temp\Scan copies of YR2020EXP02-005A.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:2000
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Scan copies of YR2020EXP02-005A.exe.logFilesize
1KB
MD57ef67a0a2b1e31df887adcdaf86e4bbd
SHA1348aad52be33f1a0c477e2ace332ecf91bb0e1a8
SHA256af207d70281cc3264107da297e00ab97d0af2f055d6065ca5936cf69db6d783f
SHA5124ffab7944ec049f2597bda791de5fd3ae3578b03ef019d2222850b8f5a298e3aae8b6e33f71c38e47132d63fb58ab1b03c876b9a01665bc8bbcf01466e7d79e1
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C:\Users\Admin\AppData\Local\Temp\tmp708C.tmpFilesize
1KB
MD5c155eb1e53406c975705363ac6ac3df0
SHA1e6832a85483ece45959c2247aac39f517aaa0f6a
SHA25664c172f172c780f94b5e42485ebff47bbf5f6ba05bda130aad69ba1b6fd419c2
SHA5127acbe4dbd50f550e98e8a84e2afc4f6e4584cb1dcfb7dc4f5a455bd2770db3f8c43ad7e2b35418dd6e88742f6470a8a337b7037419586450ac927f1bd356cee0
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memory/2000-139-0x0000000000000000-mapping.dmp
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memory/2000-140-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/2000-142-0x0000000006550000-0x00000000065B6000-memory.dmpFilesize
408KB
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memory/2000-143-0x0000000007360000-0x00000000073B0000-memory.dmpFilesize
320KB
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memory/3744-137-0x0000000000000000-mapping.dmp
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memory/4840-132-0x0000000000D60000-0x0000000000E5C000-memory.dmpFilesize
1008KB
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memory/4840-133-0x0000000005D10000-0x00000000062B4000-memory.dmpFilesize
5.6MB
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memory/4840-134-0x0000000005800000-0x0000000005892000-memory.dmpFilesize
584KB
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memory/4840-135-0x00000000059E0000-0x0000000005A7C000-memory.dmpFilesize
624KB
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memory/4840-136-0x0000000005910000-0x000000000591A000-memory.dmpFilesize
40KB