Analysis
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max time kernel
117s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
29/02/2024, 12:04
Static task
static1
Behavioral task
behavioral1
Sample
Trojan.Win32.Small.exe
Resource
win7-20240221-en
General
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Target
Trojan.Win32.Small.exe
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Size
97KB
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MD5
1d5f8c24450948f2bfcc89c80b3d5f97
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SHA1
8b7563cb9fc9e4d269a0fb77ab5a5045e4ad2317
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SHA256
de00fe780f212cae5d248e9cfbcbb2864aa3a66e1c018dea2aa81bac770dab50
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SHA512
681e70c8dab349f8bb9001b02805e54d39a0c1219774eabc4fdc782b06ad2c8991732a85453e9ff69ad1cf758a32111d6178bbc71664a255cb032bc9ea70b5b4
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SSDEEP
1536:qiRRk7iOAYZBazwRhNKLYk4G7um6nrO0+BeTiiPMZlkCRjImd0:qQk7/FZh8UkRz6nrOLgOuEkC1Dd0
Malware Config
Extracted
sality
http://89.119.67.154/testo5/
http://kukutrustnet777.info/home.gif
http://kukutrustnet888.info/home.gif
http://kukutrustnet987.info/home.gif
Signatures
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Modifies firewall policy service 2 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" Trojan.Win32.Small.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Trojan.Win32.Small.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" Trojan.Win32.Small.exe -
Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 26 IoCs
resource yara_rule behavioral1/memory/2776-2-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-4-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-5-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-9-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-13-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-17-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-23-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-29-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-30-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-31-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-33-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-34-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-35-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-36-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-38-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-39-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-40-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-42-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-48-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-50-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-52-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-55-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-56-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-59-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-60-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine behavioral1/memory/2776-62-0x00000000006B0000-0x000000000176A000-memory.dmp INDICATOR_EXE_Packed_SimplePolyEngine -
UPX dump on OEP (original entry point) 27 IoCs
resource yara_rule behavioral1/memory/2776-2-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-4-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-5-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-9-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-13-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-17-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-23-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-29-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-30-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-31-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-33-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-34-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-35-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-36-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-38-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-39-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-40-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-42-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-48-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-50-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-52-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-55-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-56-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-59-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-60-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-62-0x00000000006B0000-0x000000000176A000-memory.dmp UPX behavioral1/memory/2776-80-0x0000000000400000-0x0000000000412000-memory.dmp UPX -
resource yara_rule behavioral1/memory/2776-2-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-4-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-5-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-9-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-13-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-17-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-23-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-29-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-30-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-31-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-33-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-34-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-35-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-36-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-38-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-39-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-40-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-42-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-48-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-50-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-52-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-55-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-56-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-59-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-60-0x00000000006B0000-0x000000000176A000-memory.dmp upx behavioral1/memory/2776-62-0x00000000006B0000-0x000000000176A000-memory.dmp upx -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" Trojan.Win32.Small.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" Trojan.Win32.Small.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" Trojan.Win32.Small.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Trojan.Win32.Small.exe -
Enumerates connected drives 3 TTPs 9 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\E: Trojan.Win32.Small.exe File opened (read-only) \??\H: Trojan.Win32.Small.exe File opened (read-only) \??\I: Trojan.Win32.Small.exe File opened (read-only) \??\J: Trojan.Win32.Small.exe File opened (read-only) \??\K: Trojan.Win32.Small.exe File opened (read-only) \??\L: Trojan.Win32.Small.exe File opened (read-only) \??\M: Trojan.Win32.Small.exe File opened (read-only) \??\G: Trojan.Win32.Small.exe File opened (read-only) \??\N: Trojan.Win32.Small.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SYSTEM.INI Trojan.Win32.Small.exe File created C:\Windows\f768e5b Trojan.Win32.Small.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2776 Trojan.Win32.Small.exe 2776 Trojan.Win32.Small.exe -
Suspicious use of AdjustPrivilegeToken 21 IoCs
description pid Process Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe Token: SeDebugPrivilege 2776 Trojan.Win32.Small.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2776 wrote to memory of 1092 2776 Trojan.Win32.Small.exe 20 PID 2776 wrote to memory of 1168 2776 Trojan.Win32.Small.exe 13 PID 2776 wrote to memory of 1200 2776 Trojan.Win32.Small.exe 19 PID 2776 wrote to memory of 1320 2776 Trojan.Win32.Small.exe 14 PID 2776 wrote to memory of 1092 2776 Trojan.Win32.Small.exe 20 PID 2776 wrote to memory of 1168 2776 Trojan.Win32.Small.exe 13 PID 2776 wrote to memory of 1200 2776 Trojan.Win32.Small.exe 19 -
System policy modification 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Trojan.Win32.Small.exe
Processes
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C:\Windows\system32\Dwm.exe"C:\Windows\system32\Dwm.exe"1⤵PID:1168
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}1⤵PID:1320
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1200
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C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Small.exe"C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Small.exe"2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2776
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C:\Windows\system32\taskhost.exe"taskhost.exe"1⤵PID:1092
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Create or Modify System Process
1Windows Service
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
3Disable or Modify Tools
3Modify Registry
5