Analysis
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max time kernel
212s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
27-01-2025 19:49
Behavioral task
behavioral1
Sample
Tryhard - External.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
Tryhard - External.exe
Resource
win10v2004-20241007-en
General
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Target
Tryhard - External.exe
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Size
15.2MB
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MD5
b032db979b409e9c010322709ccfa2ca
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SHA1
ade674caa85fbce63b6226d100a3e1ca12b7abce
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SHA256
6e730445f480928385d507a3cfb776caba82e0097c4a754d427a1777dc649c98
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SHA512
9e62ceb443863659af0ba8334bd89138e0b557d67c4a9ff5c09a120dba2e3eae820b426122449fad70454296ec90889388dfb749dfe35f893cfc1a3b4c7bd016
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SSDEEP
393216:znyYZteycGUMPXZ5MOD9dbH2urEUWjJjIfoo4jLxhI:zyiteycQZOOx1WdbJ8fUnxhI
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe" svchost.exe -
Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" svchost.exe Set value (int) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" explorer.exe -
Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
description ioc Process Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999} svchost.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666} explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR" explorer.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999} svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR" svchost.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666} svchost.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666} svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR" svchost.exe -
Executes dropped EXE 8 IoCs
pid Process 2256 tryhard - external.exe 2676 tryhard - external.exe 1192 Process not Found 2032 icsys.icn.exe 316 explorer.exe 1652 spoolsv.exe 2140 svchost.exe 2176 spoolsv.exe -
Loads dropped DLL 20 IoCs
pid Process 324 Tryhard - External.exe 2256 tryhard - external.exe 2676 tryhard - external.exe 2676 tryhard - external.exe 2676 tryhard - external.exe 2676 tryhard - external.exe 2676 tryhard - external.exe 2676 tryhard - external.exe 2676 tryhard - external.exe 1192 Process not Found 324 Tryhard - External.exe 324 Tryhard - External.exe 2032 icsys.icn.exe 2032 icsys.icn.exe 316 explorer.exe 316 explorer.exe 1652 spoolsv.exe 1652 spoolsv.exe 2140 svchost.exe 2140 svchost.exe -
Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO" svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO" svchost.exe -
resource yara_rule behavioral1/files/0x000500000001ad50-85.dat upx behavioral1/memory/2676-87-0x000007FEF6F30000-0x000007FEF75F5000-memory.dmp upx -
Drops file in Windows directory 6 IoCs
description ioc Process File opened for modification \??\c:\windows\system\explorer.exe icsys.icn.exe File opened for modification \??\c:\windows\system\spoolsv.exe explorer.exe File opened for modification \??\c:\windows\system\svchost.exe spoolsv.exe File opened for modification \??\c:\windows\system\explorer.exe explorer.exe File opened for modification \??\c:\windows\system\svchost.exe svchost.exe File opened for modification C:\Windows\system\udsys.exe explorer.exe -
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 10 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 svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language at.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language at.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language at.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Tryhard - External.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icsys.icn.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language explorer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language spoolsv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language spoolsv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language at.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2032 icsys.icn.exe 316 explorer.exe 316 explorer.exe 316 explorer.exe 316 explorer.exe 316 explorer.exe 2140 svchost.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 316 explorer.exe 2140 svchost.exe 2140 svchost.exe 316 explorer.exe 316 explorer.exe 2140 svchost.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 316 explorer.exe 2140 svchost.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe 2140 svchost.exe 316 explorer.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 316 explorer.exe 2140 svchost.exe -
Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 324 Tryhard - External.exe 324 Tryhard - External.exe 2032 icsys.icn.exe 2032 icsys.icn.exe 316 explorer.exe 316 explorer.exe 1652 spoolsv.exe 1652 spoolsv.exe 2140 svchost.exe 2140 svchost.exe 2176 spoolsv.exe 2176 spoolsv.exe 316 explorer.exe 316 explorer.exe -
Suspicious use of WriteProcessMemory 43 IoCs
description pid Process procid_target PID 324 wrote to memory of 2256 324 Tryhard - External.exe 29 PID 324 wrote to memory of 2256 324 Tryhard - External.exe 29 PID 324 wrote to memory of 2256 324 Tryhard - External.exe 29 PID 324 wrote to memory of 2256 324 Tryhard - External.exe 29 PID 2256 wrote to memory of 2676 2256 tryhard - external.exe 30 PID 2256 wrote to memory of 2676 2256 tryhard - external.exe 30 PID 2256 wrote to memory of 2676 2256 tryhard - external.exe 30 PID 324 wrote to memory of 2032 324 Tryhard - External.exe 31 PID 324 wrote to memory of 2032 324 Tryhard - External.exe 31 PID 324 wrote to memory of 2032 324 Tryhard - External.exe 31 PID 324 wrote to memory of 2032 324 Tryhard - External.exe 31 PID 2032 wrote to memory of 316 2032 icsys.icn.exe 32 PID 2032 wrote to memory of 316 2032 icsys.icn.exe 32 PID 2032 wrote to memory of 316 2032 icsys.icn.exe 32 PID 2032 wrote to memory of 316 2032 icsys.icn.exe 32 PID 316 wrote to memory of 1652 316 explorer.exe 33 PID 316 wrote to memory of 1652 316 explorer.exe 33 PID 316 wrote to memory of 1652 316 explorer.exe 33 PID 316 wrote to memory of 1652 316 explorer.exe 33 PID 1652 wrote to memory of 2140 1652 spoolsv.exe 34 PID 1652 wrote to memory of 2140 1652 spoolsv.exe 34 PID 1652 wrote to memory of 2140 1652 spoolsv.exe 34 PID 1652 wrote to memory of 2140 1652 spoolsv.exe 34 PID 2140 wrote to memory of 2176 2140 svchost.exe 35 PID 2140 wrote to memory of 2176 2140 svchost.exe 35 PID 2140 wrote to memory of 2176 2140 svchost.exe 35 PID 2140 wrote to memory of 2176 2140 svchost.exe 35 PID 2140 wrote to memory of 1236 2140 svchost.exe 36 PID 2140 wrote to memory of 1236 2140 svchost.exe 36 PID 2140 wrote to memory of 1236 2140 svchost.exe 36 PID 2140 wrote to memory of 1236 2140 svchost.exe 36 PID 2140 wrote to memory of 2252 2140 svchost.exe 38 PID 2140 wrote to memory of 2252 2140 svchost.exe 38 PID 2140 wrote to memory of 2252 2140 svchost.exe 38 PID 2140 wrote to memory of 2252 2140 svchost.exe 38 PID 2140 wrote to memory of 1464 2140 svchost.exe 40 PID 2140 wrote to memory of 1464 2140 svchost.exe 40 PID 2140 wrote to memory of 1464 2140 svchost.exe 40 PID 2140 wrote to memory of 1464 2140 svchost.exe 40 PID 2140 wrote to memory of 2740 2140 svchost.exe 42 PID 2140 wrote to memory of 2740 2140 svchost.exe 42 PID 2140 wrote to memory of 2740 2140 svchost.exe 42 PID 2140 wrote to memory of 2740 2140 svchost.exe 42
Processes
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C:\Users\Admin\AppData\Local\Temp\Tryhard - External.exe"C:\Users\Admin\AppData\Local\Temp\Tryhard - External.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:324 -
\??\c:\users\admin\appdata\local\temp\tryhard - external.exe"c:\users\admin\appdata\local\temp\tryhard - external.exe "2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2256 -
\??\c:\users\admin\appdata\local\temp\tryhard - external.exe"c:\users\admin\appdata\local\temp\tryhard - external.exe "3⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2676
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C:\Users\Admin\AppData\Local\icsys.icn.exeC:\Users\Admin\AppData\Local\icsys.icn.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2032 -
\??\c:\windows\system\explorer.exec:\windows\system\explorer.exe3⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Boot or Logon Autostart Execution: Active Setup
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:316 -
\??\c:\windows\system\spoolsv.exec:\windows\system\spoolsv.exe SE4⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1652 -
\??\c:\windows\system\svchost.exec:\windows\system\svchost.exe5⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Boot or Logon Autostart Execution: Active Setup
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2140 -
\??\c:\windows\system\spoolsv.exec:\windows\system\spoolsv.exe PR6⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2176
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C:\Windows\SysWOW64\at.exeat 19:51 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe6⤵
- System Location Discovery: System Language Discovery
PID:1236
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C:\Windows\SysWOW64\at.exeat 19:52 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe6⤵
- System Location Discovery: System Language Discovery
PID:2252
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C:\Windows\SysWOW64\at.exeat 19:53 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe6⤵
- System Location Discovery: System Language Discovery
PID:1464
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C:\Windows\SysWOW64\at.exeat 19:54 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe6⤵
- System Location Discovery: System Language Discovery
PID:2740
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Active Setup
1Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
3Active Setup
1Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
4Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
21KB
MD51c58526d681efe507deb8f1935c75487
SHA10e6d328faf3563f2aae029bc5f2272fb7a742672
SHA256ef13dce8f71173315dfc64ab839b033ab19a968ee15230e9d4d2c9d558efeee2
SHA5128edb9a0022f417648e2ece9e22c96e2727976332025c3e7d8f15bcf6d7d97e680d1bf008eb28e2e0bd57787dcbb71d38b2deb995b8edc35fa6852ab1d593f3d1
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Filesize
18KB
MD5bfffa7117fd9b1622c66d949bac3f1d7
SHA1402b7b8f8dcfd321b1d12fc85a1ee5137a5569b2
SHA2561ea267a2e6284f17dd548c6f2285e19f7edb15d6e737a55391140ce5cb95225e
SHA512b319cc7b436b1be165cdf6ffcab8a87fe29de78f7e0b14c8f562be160481fb5483289bd5956fdc1d8660da7a3f86d8eede35c6cc2b7c3d4c852decf4b2dcdb7f
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Filesize
21KB
MD5724223109e49cb01d61d63a8be926b8f
SHA1072a4d01e01dbbab7281d9bd3add76f9a3c8b23b
SHA2564e975f618df01a492ae433dff0dd713774d47568e44c377ceef9e5b34aad1210
SHA51219b0065b894dc66c30a602c9464f118e7f84d83010e74457d48e93aaca4422812b093b15247b24d5c398b42ef0319108700543d13f156067b169ccfb4d7b6b7c
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Filesize
21KB
MD5517eb9e2cb671ae49f99173d7f7ce43f
SHA14ccf38fed56166ddbf0b7efb4f5314c1f7d3b7ab
SHA25657cc66bf0909c430364d35d92b64eb8b6a15dc201765403725fe323f39e8ac54
SHA512492be2445b10f6bfe6c561c1fc6f5d1af6d1365b7449bc57a8f073b44ae49c88e66841f5c258b041547fcd33cbdcb4eb9dd3e24f0924db32720e51651e9286be
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Filesize
1.7MB
MD5fb8bedf8440eb432c9f3587b8114abc0
SHA1136bb4dd38a7f6cb3e2613910607131c97674f7c
SHA256cb627a3c89de8e114c95bda70e9e75c73310eb8af6cf3a937b1e3678c8f525b6
SHA512b632235d5f60370efa23f8c50170a8ac569ba3705ec3d515efcad14009e0641649ab0f2139f06868024d929defffffefb352bd2516e8cd084e11557b31e95a63
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Filesize
992KB
MD50e0bac3d1dcc1833eae4e3e4cf83c4ef
SHA14189f4459c54e69c6d3155a82524bda7549a75a6
SHA2568a91052ef261b5fbf3223ae9ce789af73dfe1e9b0ba5bdbc4d564870a24f2bae
SHA512a45946e3971816f66dd7ea3788aacc384a9e95011500b458212dc104741315b85659e0d56a41570731d338bdf182141c093d3ced222c007038583ceb808e26fd
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Filesize
206KB
MD52a9a75881394cf3f5d3ddde34c19fe1c
SHA10255921cfa316a74e13eed0bb5cda3f45a77ceba
SHA2560eea3b616221d0e3a89a5f54fbe208f18f27bd466f7035e449177a5bb2fa9378
SHA512182a321cb9eecdcf4bdc389faa05cc18ffd2fa82aee0ce531a0fa525e60c8b99429e3dc9a89736252cc05b882de258f65ebbfc561dd9208a7194fbe8b60dfb9d
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Filesize
207KB
MD503a09ed474f2fc96aa5a9760a49f18b2
SHA1dc9be93b4d857791820f9ed01b37230df6664065
SHA256c6248a08e69bf2d1ba7be25e574a5234460c6e0673fe6de88f22beb298c0e867
SHA5123d20b6f5b80c54ce3634616250e1dd4534fd31890960acdb37e459ffd50d62a4a6d70699dab2e44fd3f297b5349ea1e3bfbfaab2f0b5ee06f58fcfdf9a7d74c3
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Filesize
21KB
MD5d12403ee11359259ba2b0706e5e5111c
SHA103cc7827a30fd1dee38665c0cc993b4b533ac138
SHA256f60e1751a6ac41f08e46480bf8e6521b41e2e427803996b32bdc5e78e9560781
SHA5129004f4e59835af57f02e8d9625814db56f0e4a98467041da6f1367ef32366ad96e0338d48fff7cc65839a24148e2d9989883bcddc329d9f4d27cae3f843117d0
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Filesize
15.0MB
MD59a734facf345e670da596dfafe58bd2b
SHA15da6d276f31aea758605321412c5a8aeaa31c9d3
SHA256da93fb3f0ce8c6d5388607359db3388cd3448d5f291d984dd05a4ca851240a56
SHA51266b3e76a28c15fcedab2b967476cfc32a4737ab598f6cf138346076bbb3154b3040b251a2e9f8372552fcd14732a0382472e9ec8212dc2dbc124545a8ab346d2
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Filesize
206KB
MD5e387e3245b8270c962a7523eb8a0406d
SHA11931834a11565c29d347d1c16d8bf01dc47bc34b
SHA256d9eb0356b0cabfc941b93106997e6f18ed2a62949251f1ad8c5e432ce897910f
SHA512b95acf286ab48bc3745824e7953bc21bfabf0797bc55a8ce379dd14a38969bb1d76333b135ec53847fd9724abe3c85285676905575416501982f8fea5eb986ae
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Filesize
206KB
MD549bdf5ef97e93b4f258fb732084e70c6
SHA16a4fa73c081d4c0b4cdcacb784730208a731917f
SHA256bcfb7650135e30c99188cca42fcb4b777771c6194ceabd22957ebae923d40fe2
SHA51255e79b429489d7038bca0f6488d08ab60769279a92b6add6eccf53c13e7292eaffcdb77aada6bbd4b60e3f292994076dd785c9ad50f2a35f5e233e5cbe72a843
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Filesize
206KB
MD5a9a53f2aa98ecc890e90b8b31f6cc9ff
SHA1e3e4e29c1eef88b39c371635e40b87de1c3dfaf6
SHA2560458f661891d78ef1a79908c641cd5e263cc0fafd874be1679b66317bd391528
SHA512c0a8e389f22825048ddb0aef162e1a17e40b5c64215713c8c5213c5e615d4f955f7f1a872b5e7f2fde73f4db8b79bf9137065d3352eb5f2d699fe388849cf8a3