6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed

Analysis

max time kernel
149s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2024, 22:33

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General

Target

6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed.exe
Size

70KB
MD5

29362b0bb6545b9e671fb74aac88c532
SHA1

d2b752ebd07e2972dcd0ebd05dd5369321034f66
SHA256

6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed
SHA512

7d5e143a7d5b27ea457db9072b6addd7accdf575a4ef747a18af3135c8de6b3566f74fea7c94e68e749c46502ea65aac01da97f255a12e5015ff7229c52aab37
SSDEEP

1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8z7:Olg35GTslA5t3/w8z7

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	oudsader.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	oudsader.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	oudsader.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	oudsader.exe

Modifies Installed Components in the registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{484E4F50-4d4c-5059-484E-4F504D4C5059}\IsInstalled = "1"	oudsader.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{484E4F50-4d4c-5059-484E-4F504D4C5059}\StubPath = "C:\\Windows\\system32\\ulrootat.exe"	oudsader.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{484E4F50-4d4c-5059-484E-4F504D4C5059}	oudsader.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{484E4F50-4d4c-5059-484E-4F504D4C5059}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	oudsader.exe

Sets file execution options in registry 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	oudsader.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\eabveafoas.exe"	oudsader.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe	oudsader.exe

Executes dropped EXE 2 IoCs

pid	Process
4864	oudsader.exe
2852	oudsader.exe

Windows security modification 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	oudsader.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	oudsader.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	oudsader.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	oudsader.exe

Modifies WinLogon 2 TTPs 5 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}	oudsader.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	oudsader.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	oudsader.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\eahbeatad.dll"	oudsader.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	oudsader.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\eahbeatad.dll	oudsader.exe
File created	C:\Windows\SysWOW64\eahbeatad.dll	oudsader.exe
File created	C:\Windows\SysWOW64\oudsader.exe	6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed.exe
File opened for modification	C:\Windows\SysWOW64\eabveafoas.exe	oudsader.exe
File created	C:\Windows\SysWOW64\eabveafoas.exe	oudsader.exe
File opened for modification	C:\Windows\SysWOW64\ulrootat.exe	oudsader.exe
File created	C:\Windows\SysWOW64\ulrootat.exe	oudsader.exe
File opened for modification	C:\Windows\SysWOW64\oudsader.exe	oudsader.exe
File opened for modification	C:\Windows\SysWOW64\oudsader.exe	6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
2852	oudsader.exe
2852	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe
4864	oudsader.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2156	6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed.exe
Token: SeDebugPrivilege	4864	oudsader.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 4864	2156	6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed.exe	83
PID 2156 wrote to memory of 4864	2156	6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed.exe	83
PID 2156 wrote to memory of 4864	2156	6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed.exe	83
PID 4864 wrote to memory of 616	4864	oudsader.exe	5
PID 4864 wrote to memory of 2852	4864	oudsader.exe	84
PID 4864 wrote to memory of 2852	4864	oudsader.exe	84
PID 4864 wrote to memory of 2852	4864	oudsader.exe	84
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56
PID 4864 wrote to memory of 3440	4864	oudsader.exe	56

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3440
- C:\Users\Admin\AppData\Local\Temp\6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed.exe
  "C:\Users\Admin\AppData\Local\Temp\6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed.exe"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Windows\SysWOW64\oudsader.exe
    "C:\Windows\system32\oudsader.exe"
    3⤵
    - Windows security bypass
    - Modifies Installed Components in the registry
    - Sets file execution options in registry
    - Executes dropped EXE
    - Windows security modification
    - Modifies WinLogon
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4864
  - - C:\Windows\SysWOW64\oudsader.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:2852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\eabveafoas.exe

Filesize
73KB

MD5
67211c4cedb641bbc8db08dcd07c5aee

SHA1
4c0c48f35b9599410c334d5ed96edb40fc1962cd

SHA256
e622059c5291b5f543cc6c119833f444b47dd5e1f3861e18e18216d7ff6a3c5e

SHA512
875495cd22f149f3210dea01cf3b564d8959387be5aa0a0a3017afa8ef331668eb23866cde84d0c583c33af7e858d67943432e373ef94c14067ac180430b41f1

Download Submit
C:\Windows\SysWOW64\eahbeatad.dll

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

Download Submit
C:\Windows\SysWOW64\oudsader.exe

Filesize
70KB

MD5
29362b0bb6545b9e671fb74aac88c532

SHA1
d2b752ebd07e2972dcd0ebd05dd5369321034f66

SHA256
6358f87865da9a86c647964144b0a2db9fec498fa2a3f8112776d9d5053618ed

SHA512
7d5e143a7d5b27ea457db9072b6addd7accdf575a4ef747a18af3135c8de6b3566f74fea7c94e68e749c46502ea65aac01da97f255a12e5015ff7229c52aab37

Download Submit
C:\Windows\SysWOW64\ulrootat.exe

Filesize
72KB

MD5
44895017d2f0b164a7951e35c9b187a5

SHA1
42711a2cdff12ae4c0c23ba32de8087b8814d578

SHA256
11944fd8a8117a9357bc6ca15f4be1e6f37e221e4187fb0cd3959bb09c5b329d

SHA512
1aad057f46402ef781c0281d46a447edcb7688daf9faf809569df1c88212525cd40ef970a42ebcdecf81e35093d8fa444da4df1960b0ef5547e3a080bbc3967d

Download Submit
memory/2156-4-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2852-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4864-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download