Analysis
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max time kernel
125s -
max time network
51s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system -
submitted
11-12-2023 14:19
Static task
static1
Behavioral task
behavioral1
Sample
Scan_0366926812023.exe
Resource
win7-20231130-en
Behavioral task
behavioral2
Sample
Scan_0366926812023.exe
Resource
win10v2004-20231130-en
General
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Target
Scan_0366926812023.exe
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Size
694KB
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MD5
964b7d4d87d7b3e0399164197d8d32f1
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SHA1
48128fb0758e9c9ae80f5c3d3f4a3a51798b3431
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SHA256
22fe993d3d069bbd257db91dd0bc76cffabc3a67ac535e0cadc7e58649f78f49
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SHA512
5d151b87eca87a148dd025a0c4e87ba02bd82842b04666bff7b7ce92fbd65fc17f597343adc5ea75439aaf15fbf50e72c586f44efab995b369dd9ae1e0ad07de
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SSDEEP
12288:w3IU8S6eUd62pBI/NlGlPm5ITCIRMfiEw53QL+W5RlnVS7ga6k5:OItSAd62pZlRXRMfGV0+W5C5
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.wrklearning.com - Port:
587 - Username:
[email protected] - Password:
worke2300 - 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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Detect ZGRat V1 1 IoCs
resource yara_rule behavioral2/memory/4880-6-0x0000000007210000-0x0000000007228000-memory.dmp family_zgrat_v1 -
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-1-5-21-3936660601-1848837011-2142350499-1000\Control Panel\International\Geo\Nation Scan_0366926812023.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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3936660601-1848837011-2142350499-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan_0366926812023.exe Key opened \REGISTRY\USER\S-1-5-21-3936660601-1848837011-2142350499-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan_0366926812023.exe Key opened \REGISTRY\USER\S-1-5-21-3936660601-1848837011-2142350499-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan_0366926812023.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.
flow ioc 6 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4880 set thread context of 3140 4880 Scan_0366926812023.exe 94 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
pid Process 1968 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2444 powershell.exe 3140 Scan_0366926812023.exe 3140 Scan_0366926812023.exe 2444 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2444 powershell.exe Token: SeDebugPrivilege 3140 Scan_0366926812023.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4880 wrote to memory of 2444 4880 Scan_0366926812023.exe 96 PID 4880 wrote to memory of 2444 4880 Scan_0366926812023.exe 96 PID 4880 wrote to memory of 2444 4880 Scan_0366926812023.exe 96 PID 4880 wrote to memory of 1968 4880 Scan_0366926812023.exe 95 PID 4880 wrote to memory of 1968 4880 Scan_0366926812023.exe 95 PID 4880 wrote to memory of 1968 4880 Scan_0366926812023.exe 95 PID 4880 wrote to memory of 3140 4880 Scan_0366926812023.exe 94 PID 4880 wrote to memory of 3140 4880 Scan_0366926812023.exe 94 PID 4880 wrote to memory of 3140 4880 Scan_0366926812023.exe 94 PID 4880 wrote to memory of 3140 4880 Scan_0366926812023.exe 94 PID 4880 wrote to memory of 3140 4880 Scan_0366926812023.exe 94 PID 4880 wrote to memory of 3140 4880 Scan_0366926812023.exe 94 PID 4880 wrote to memory of 3140 4880 Scan_0366926812023.exe 94 PID 4880 wrote to memory of 3140 4880 Scan_0366926812023.exe 94 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3936660601-1848837011-2142350499-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan_0366926812023.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3936660601-1848837011-2142350499-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Scan_0366926812023.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Scan_0366926812023.exe"C:\Users\Admin\AppData\Local\Temp\Scan_0366926812023.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4880 -
C:\Users\Admin\AppData\Local\Temp\Scan_0366926812023.exe"C:\Users\Admin\AppData\Local\Temp\Scan_0366926812023.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3140
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FQlHsVTvVqkAaa" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8BB5.tmp"2⤵
- Creates scheduled task(s)
PID:1968
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FQlHsVTvVqkAaa.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2444
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5a96c4b5ded340529df43e377f9a8d337
SHA1a5d70670ff7ed9a473b242b844df852240e90ca7
SHA2565d4bd3b731d0488f43d4c198ee18c7bc20f74cfa638e8a3ab35204fa5ff4f8a8
SHA512117bef1b942ea8b2601455af585dce108fca898aa365c6ddcb3a21fc9bc9985addff80578af0ba47acf506b23eda8d757b5f10f57890227f7ffbea70b2d0878d