Analysis
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max time kernel
119s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
15/07/2024, 06:15
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
991ad48a53c177172d1947f42e3e66a0N.exe
Resource
win7-20240704-en
windows7-x64
11 signatures
120 seconds
Behavioral task
behavioral2
Sample
991ad48a53c177172d1947f42e3e66a0N.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
10 signatures
120 seconds
General
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Target
991ad48a53c177172d1947f42e3e66a0N.exe
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Size
68KB
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MD5
991ad48a53c177172d1947f42e3e66a0
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SHA1
d579ae474bea4aca28dbb27e7cc4111efe95aa50
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SHA256
10153e999c99dd437dfc6a902eb9c0222c3f9e9b897009a362d89f2c24ca5bd0
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SHA512
efd98f3acba6e91022289fdd9f1baecad625374ef801689a05efa96424ba5a0ae59475bd6805a5b78cc4692885111e7f600cb3fc111331f624c9a228422b6140
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SSDEEP
1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8/:Olg35GTslA5t3/w8/
Score
10/10
Malware Config
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "25600" oupcitum.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600" oupcitum.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600" oupcitum.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600" oupcitum.exe -
Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{464D4544-4658-4645-464D-454446584645} oupcitum.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{464D4544-4658-4645-464D-454446584645}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" oupcitum.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{464D4544-4658-4645-464D-454446584645}\IsInstalled = "1" oupcitum.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{464D4544-4658-4645-464D-454446584645}\StubPath = "C:\\Windows\\system32\\ihgoadoor.exe" oupcitum.exe -
Event Triggered Execution: Image File Execution Options Injection 1 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe oupcitum.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a" oupcitum.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\asxotec.exe" oupcitum.exe -
Executes dropped EXE 2 IoCs
pid Process 2724 oupcitum.exe 2836 oupcitum.exe -
Loads dropped DLL 3 IoCs
pid Process 2672 991ad48a53c177172d1947f42e3e66a0N.exe 2672 991ad48a53c177172d1947f42e3e66a0N.exe 2724 oupcitum.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "25600" oupcitum.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600" oupcitum.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600" oupcitum.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600" oupcitum.exe -
Modifies WinLogon 2 TTPs 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B} oupcitum.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify oupcitum.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a" oupcitum.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\obxuren.dll" oupcitum.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup" oupcitum.exe -
Drops file in System32 directory 9 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\obxuren.dll oupcitum.exe File created C:\Windows\SysWOW64\obxuren.dll oupcitum.exe File created C:\Windows\SysWOW64\ihgoadoor.exe oupcitum.exe File created C:\Windows\SysWOW64\oupcitum.exe 991ad48a53c177172d1947f42e3e66a0N.exe File opened for modification C:\Windows\SysWOW64\asxotec.exe oupcitum.exe File created C:\Windows\SysWOW64\asxotec.exe oupcitum.exe File opened for modification C:\Windows\SysWOW64\ihgoadoor.exe oupcitum.exe File opened for modification C:\Windows\SysWOW64\oupcitum.exe oupcitum.exe File opened for modification C:\Windows\SysWOW64\oupcitum.exe 991ad48a53c177172d1947f42e3e66a0N.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2836 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe 2724 oupcitum.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2672 991ad48a53c177172d1947f42e3e66a0N.exe Token: SeDebugPrivilege 2724 oupcitum.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2672 wrote to memory of 2724 2672 991ad48a53c177172d1947f42e3e66a0N.exe 30 PID 2672 wrote to memory of 2724 2672 991ad48a53c177172d1947f42e3e66a0N.exe 30 PID 2672 wrote to memory of 2724 2672 991ad48a53c177172d1947f42e3e66a0N.exe 30 PID 2672 wrote to memory of 2724 2672 991ad48a53c177172d1947f42e3e66a0N.exe 30 PID 2724 wrote to memory of 432 2724 oupcitum.exe 5 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 2836 2724 oupcitum.exe 31 PID 2724 wrote to memory of 2836 2724 oupcitum.exe 31 PID 2724 wrote to memory of 2836 2724 oupcitum.exe 31 PID 2724 wrote to memory of 2836 2724 oupcitum.exe 31 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21 PID 2724 wrote to memory of 1164 2724 oupcitum.exe 21
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:432
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1164
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C:\Users\Admin\AppData\Local\Temp\991ad48a53c177172d1947f42e3e66a0N.exe"C:\Users\Admin\AppData\Local\Temp\991ad48a53c177172d1947f42e3e66a0N.exe"2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2672 -
C:\Windows\SysWOW64\oupcitum.exe"C:\Windows\system32\oupcitum.exe"3⤵
- Windows security bypass
- Boot or Logon Autostart Execution: Active Setup
- Event Triggered Execution: Image File Execution Options Injection
- Executes dropped EXE
- Loads dropped DLL
- Windows security modification
- Modifies WinLogon
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2724 -
C:\Windows\SysWOW64\oupcitum.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2836
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Winlogon Helper DLL
1Event Triggered Execution
1Image File Execution Options Injection
1Replay Monitor
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Downloads
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Filesize
72KB
MD5e7aaaf600a3119b9208a412253209583
SHA1d4e6a5747ac9dbfc120db32ae2854e2a46a72f56
SHA256e650e80a6f6eb6280fb761472f9c5cdbf86a62fb8c2c01f3a258cfe5dbeceb65
SHA512a4f66ff4d6875480286aec46d697139838b73f71c4f94bf8301b80cd1ee8e701e8a169f7e78268fdc6f88bc1523f27052fed8aea95d7927e1a32c97fbf031bfb
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Filesize
71KB
MD57868f8d217833855682ac15b8f9cecc4
SHA1fad991784168979c31632b6f9d8031f713cb01fb
SHA256151eab6b41903f856b11f3bd4ff6cc8a23db02ae153f1518e0d0acfac32dd7c0
SHA512cd92e43c5458f00c2d363a95677ce55e7d48114a4f87e7e9388f3ff7c7f0fda967a607a0c7132e76cc76d6aa01ad666531bab167b8916651d7d13598357ce37b
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Filesize
5KB
MD5f37b21c00fd81bd93c89ce741a88f183
SHA1b2796500597c68e2f5638e1101b46eaf32676c1c
SHA25676cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0
SHA512252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4
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Filesize
68KB
MD5991ad48a53c177172d1947f42e3e66a0
SHA1d579ae474bea4aca28dbb27e7cc4111efe95aa50
SHA25610153e999c99dd437dfc6a902eb9c0222c3f9e9b897009a362d89f2c24ca5bd0
SHA512efd98f3acba6e91022289fdd9f1baecad625374ef801689a05efa96424ba5a0ae59475bd6805a5b78cc4692885111e7f600cb3fc111331f624c9a228422b6140