Analysis
- max time kernel
103s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system - submitted
09/12/2022, 06:06
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220901-en
15 signatures
150 seconds
General
- Target file.exe
- Size 421KB
- Sample221209-gtrf8sfd9s
- SHA256 5e535fca8f9a9ffc8f15d6cc24ef479929f40c802959f788334898e3e074f87a
- MD5 5137fba29f813b1304703b9f3a75ec6c
- SHA1 5fe53033676b973f45cf7cfe1271d884f63087f2
- SHA512 49a1dcb5c7952128a9a06b8884cb4e53e47ee648b82d96b1f950a7900b48d8e0b66322fe034a46130bf32ce952310233c4fec8d63d799a2d5cd7a09a3bbd3dba
- SSDEEP 6144:0DvLeiixeodFBsAtkKwGPJ/u0wXhh6K9W9KvSHwtded89kTt:0zSiig2FBsG2G80OIK9W9KvWwuac
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
amadey
Version
-
3.50
C2
-
31.41.244.237/jg94cVd30f/index.php
Signatures
- Detect Amadey credential stealer module 2 IoCs
resource yara_rule behavioral2/files/0x0001000000022e04-156.dat amadey_cred_module behavioral2/files/0x0001000000022e04-157.dat amadey_cred_module - Blocklisted process makes network request 1 IoCs
flow pid Process 42 1312 rundll32.exe - Downloads MZ/PE file
- Executes dropped EXE 3 IoCs
pid Process 2668 gntuud.exe 4888 gntuud.exe 4396 gntuud.exe - Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation gntuud.exe - Loads dropped DLL 1 IoCs
pid Process 1312 rundll32.exe - Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 3 IoCs
pid pid_target Process procid_target 1032 3376 WerFault.exe 79 2372 4888 WerFault.exe 96 4112 4396 WerFault.exe 106 - Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1408 schtasks.exe - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1312 rundll32.exe 1312 rundll32.exe 1312 rundll32.exe 1312 rundll32.exe - Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 3376 wrote to memory of 2668 3376 file.exe 80 PID 3376 wrote to memory of 2668 3376 file.exe 80 PID 3376 wrote to memory of 2668 3376 file.exe 80 PID 2668 wrote to memory of 1408 2668 gntuud.exe 84 PID 2668 wrote to memory of 1408 2668 gntuud.exe 84 PID 2668 wrote to memory of 1408 2668 gntuud.exe 84 PID 2668 wrote to memory of 1356 2668 gntuud.exe 86 PID 2668 wrote to memory of 1356 2668 gntuud.exe 86 PID 2668 wrote to memory of 1356 2668 gntuud.exe 86 PID 1356 wrote to memory of 3540 1356 cmd.exe 88 PID 1356 wrote to memory of 3540 1356 cmd.exe 88 PID 1356 wrote to memory of 3540 1356 cmd.exe 88 PID 1356 wrote to memory of 1080 1356 cmd.exe 89 PID 1356 wrote to memory of 1080 1356 cmd.exe 89 PID 1356 wrote to memory of 1080 1356 cmd.exe 89 PID 1356 wrote to memory of 3328 1356 cmd.exe 90 PID 1356 wrote to memory of 3328 1356 cmd.exe 90 PID 1356 wrote to memory of 3328 1356 cmd.exe 90 PID 1356 wrote to memory of 1452 1356 cmd.exe 92 PID 1356 wrote to memory of 1452 1356 cmd.exe 92 PID 1356 wrote to memory of 1452 1356 cmd.exe 92 PID 1356 wrote to memory of 2232 1356 cmd.exe 91 PID 1356 wrote to memory of 2232 1356 cmd.exe 91 PID 1356 wrote to memory of 2232 1356 cmd.exe 91 PID 1356 wrote to memory of 3008 1356 cmd.exe 93 PID 1356 wrote to memory of 3008 1356 cmd.exe 93 PID 1356 wrote to memory of 3008 1356 cmd.exe 93 PID 2668 wrote to memory of 1312 2668 gntuud.exe 105 PID 2668 wrote to memory of 1312 2668 gntuud.exe 105 PID 2668 wrote to memory of 1312 2668 gntuud.exe 105 - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3376 -
C:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exe"C:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2668 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN gntuud.exe /TR "C:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exe" /F3⤵
- Creates scheduled task(s)
PID:1408
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k echo Y|CACLS "gntuud.exe" /P "Admin:N"&&CACLS "gntuud.exe" /P "Admin:R" /E&&echo Y|CACLS "..\9c69749b54" /P "Admin:N"&&CACLS "..\9c69749b54" /P "Admin:R" /E&&Exit3⤵
- Suspicious use of WriteProcessMemory
PID:1356 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo Y"4⤵PID:3540
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C:\Windows\SysWOW64\cacls.exeCACLS "gntuud.exe" /P "Admin:N"4⤵PID:1080
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C:\Windows\SysWOW64\cacls.exeCACLS "gntuud.exe" /P "Admin:R" /E4⤵PID:3328
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C:\Windows\SysWOW64\cacls.exeCACLS "..\9c69749b54" /P "Admin:N"4⤵PID:2232
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo Y"4⤵PID:1452
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C:\Windows\SysWOW64\cacls.exeCACLS "..\9c69749b54" /P "Admin:R" /E4⤵PID:3008
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\85f469ce401df1\cred64.dll, Main3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- outlook_win_path
PID:1312
-
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3376 -s 11442⤵
- Program crash
PID:1032
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3376 -ip 33761⤵PID:3588
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C:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exeC:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exe1⤵
- Executes dropped EXE
PID:4888 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4888 -s 4242⤵
- Program crash
PID:2372
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4888 -ip 48881⤵PID:1664
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C:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exeC:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exe1⤵
- Executes dropped EXE
PID:4396 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4396 -s 4162⤵
- Program crash
PID:4112
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 4396 -ip 43961⤵PID:2820
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exe
- Size 421KB
- SHA256 5e535fca8f9a9ffc8f15d6cc24ef479929f40c802959f788334898e3e074f87a
- MD5 5137fba29f813b1304703b9f3a75ec6c
- SHA1 5fe53033676b973f45cf7cfe1271d884f63087f2
- SHA512 49a1dcb5c7952128a9a06b8884cb4e53e47ee648b82d96b1f950a7900b48d8e0b66322fe034a46130bf32ce952310233c4fec8d63d799a2d5cd7a09a3bbd3dba
- SSDEEP 6144:0DvLeiixeodFBsAtkKwGPJ/u0wXhh6K9W9KvSHwtded89kTt:0zSiig2FBsG2G80OIK9W9KvWwuac
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exe
- Size 421KB
- SHA256 5e535fca8f9a9ffc8f15d6cc24ef479929f40c802959f788334898e3e074f87a
- MD5 5137fba29f813b1304703b9f3a75ec6c
- SHA1 5fe53033676b973f45cf7cfe1271d884f63087f2
- SHA512 49a1dcb5c7952128a9a06b8884cb4e53e47ee648b82d96b1f950a7900b48d8e0b66322fe034a46130bf32ce952310233c4fec8d63d799a2d5cd7a09a3bbd3dba
- SSDEEP 6144:0DvLeiixeodFBsAtkKwGPJ/u0wXhh6K9W9KvSHwtded89kTt:0zSiig2FBsG2G80OIK9W9KvWwuac
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exe
- Size 421KB
- SHA256 5e535fca8f9a9ffc8f15d6cc24ef479929f40c802959f788334898e3e074f87a
- MD5 5137fba29f813b1304703b9f3a75ec6c
- SHA1 5fe53033676b973f45cf7cfe1271d884f63087f2
- SHA512 49a1dcb5c7952128a9a06b8884cb4e53e47ee648b82d96b1f950a7900b48d8e0b66322fe034a46130bf32ce952310233c4fec8d63d799a2d5cd7a09a3bbd3dba
- SSDEEP 6144:0DvLeiixeodFBsAtkKwGPJ/u0wXhh6K9W9KvSHwtded89kTt:0zSiig2FBsG2G80OIK9W9KvWwuac
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\9c69749b54\gntuud.exe
- Size 421KB
- SHA256 5e535fca8f9a9ffc8f15d6cc24ef479929f40c802959f788334898e3e074f87a
- MD5 5137fba29f813b1304703b9f3a75ec6c
- SHA1 5fe53033676b973f45cf7cfe1271d884f63087f2
- SHA512 49a1dcb5c7952128a9a06b8884cb4e53e47ee648b82d96b1f950a7900b48d8e0b66322fe034a46130bf32ce952310233c4fec8d63d799a2d5cd7a09a3bbd3dba
- SSDEEP 6144:0DvLeiixeodFBsAtkKwGPJ/u0wXhh6K9W9KvSHwtded89kTt:0zSiig2FBsG2G80OIK9W9KvWwuac
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\85f469ce401df1\cred64.dll
- Size 126KB
- SHA256 c7d804e8fb096769b0e199102bdf8efa97dfae1a9b57a479819971146877368b
- MD5 c0fd0167e213b6148333351bd16ed1fb
- SHA1 1cfb2b42686557656dead53e02d1db3f2a848026
- SHA512 d514f35e62a5380b4ad96a3e0cddf82b53b1cf273e5ac542f040f30a75efd3c246fa2194e4bb273572cd2436a435a608e2b919f6df9fa4ebbf452b0d297b0cf9
- SSDEEP 3072:Yx7pOYzBek53tiINwyP7XSSJds3zhrjPcnqULv4i9:Yx7ZNh53vwyOztPc3L
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\85f469ce401df1\cred64.dll
- Size 126KB
- SHA256 c7d804e8fb096769b0e199102bdf8efa97dfae1a9b57a479819971146877368b
- MD5 c0fd0167e213b6148333351bd16ed1fb
- SHA1 1cfb2b42686557656dead53e02d1db3f2a848026
- SHA512 d514f35e62a5380b4ad96a3e0cddf82b53b1cf273e5ac542f040f30a75efd3c246fa2194e4bb273572cd2436a435a608e2b919f6df9fa4ebbf452b0d297b0cf9
- SSDEEP 3072:Yx7pOYzBek53tiINwyP7XSSJds3zhrjPcnqULv4i9:Yx7ZNh53vwyOztPc3L
- MD5 SHA1 SHA512 SSDEEP