e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 01:23

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General

Target
e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e.exe
Size 69KB
Sample240311-br9bdagh9z
SHA256 e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e
MD5 c2d454e3daf6aafad0a08fa1195e34fd
SHA1 b7c35b1d14f6321316c1fdaa71ad39464a3763a2
SHA512 2abbc87e0d43532cf1887739b353740d26ef8dd1d954bb4058fac94862672608e8f167e9ea763bb69cee3c930648035d3c20df819cdd4c84644d7d096a471039
SSDEEP 1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8s:Olg35GTslA5t3/w8s
MD5 SHA1 SHA512 SSDEEP

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\AntiVirusOverride = "25600"	ugsamid.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	ugsamid.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	ugsamid.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	ugsamid.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 (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534C564A-4c42-4257-534C-564A4C424257}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	ugsamid.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534C564A-4c42-4257-534C-564A4C424257}\IsInstalled = "1"	ugsamid.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534C564A-4c42-4257-534C-564A4C424257}\StubPath = "C:\\Windows\\system32\\eahtixeat.exe"	ugsamid.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534C564A-4c42-4257-534C-564A4C424257}	ugsamid.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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe	ugsamid.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	ugsamid.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\eadresov-easur.exe"	ugsamid.exe

Executes dropped EXE 2 IoCs

pid	Process
4064	ugsamid.exe
1004	ugsamid.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\UpdatesDisableNotify = "25600"	ugsamid.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	ugsamid.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	ugsamid.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	ugsamid.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	ugsamid.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	ugsamid.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\abreahuc.dll"	ugsamid.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	ugsamid.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}	ugsamid.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\eadresov-easur.exe	ugsamid.exe
File opened for modification	C:\Windows\SysWOW64\abreahuc.dll	ugsamid.exe
File created	C:\Windows\SysWOW64\abreahuc.dll	ugsamid.exe
File opened for modification	C:\Windows\SysWOW64\ugsamid.exe	ugsamid.exe
File opened for modification	C:\Windows\SysWOW64\ugsamid.exe	e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e.exe
File created	C:\Windows\SysWOW64\ugsamid.exe	e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e.exe
File opened for modification	C:\Windows\SysWOW64\eadresov-easur.exe	ugsamid.exe
File opened for modification	C:\Windows\SysWOW64\eahtixeat.exe	ugsamid.exe
File created	C:\Windows\SysWOW64\eahtixeat.exe	ugsamid.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
1004	ugsamid.exe
1004	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe
4064	ugsamid.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4292	e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e.exe
Token: SeDebugPrivilege	4064	ugsamid.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4292 wrote to memory of 4064	4292	e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e.exe	88
PID 4292 wrote to memory of 4064	4292	e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e.exe	88
PID 4292 wrote to memory of 4064	4292	e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e.exe	88
PID 4064 wrote to memory of 1004	4064	ugsamid.exe	89
PID 4064 wrote to memory of 1004	4064	ugsamid.exe	89
PID 4064 wrote to memory of 1004	4064	ugsamid.exe	89
PID 4064 wrote to memory of 616	4064	ugsamid.exe	5
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57
PID 4064 wrote to memory of 3500	4064	ugsamid.exe	57

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

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3500
- C:\Users\Admin\AppData\Local\Temp\e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e.exe
  "C:\Users\Admin\AppData\Local\Temp\e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e.exe"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4292
- - C:\Windows\SysWOW64\ugsamid.exe
    "C:\Windows\system32\ugsamid.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:4064
  - - C:\Windows\SysWOW64\ugsamid.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:1004

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

abreahuc.dll

Path C:\Windows\SysWOW64\abreahuc.dll
Size 5KB
SHA256 76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0
MD5 f37b21c00fd81bd93c89ce741a88f183
SHA1 b2796500597c68e2f5638e1101b46eaf32676c1c
SHA512 252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4
SSDEEP 48:6/bHgJ2GVhcus1lli4NbE2eMGjofSA8YDITcSd3MA3MMIv0BvcvXQ3:yAJ2G6Vx5EUGU6wIASdcAcHvA3
MD5 SHA1 SHA512 SSDEEP

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eadresov-easur.exe

Path C:\Windows\SysWOW64\eadresov-easur.exe
Size 72KB
SHA256 d38b37d8d2eb164a6ed49181a5cd9121b9722677e47b94f31fa33372481a2035
MD5 133b1b91962f559604f2963229255356
SHA1 2b8dd4357dfff2e3ace16c6f91dee8f1f02b3246
SHA512 4cb0a74f4cb426b1c86c021acb2d8d468b4e248d3660ba1cda6f05418e4071f59a97c10fbfaa737a858ce59832796bf60bc09815399666ad3fe86c8223dae773
SSDEEP 768:hZZ6Zyf9nHJKMFZDZwJisjaUEHyY3t8c0rVpORbI5+sLNyT1hywuuALPtPqUuiuA:1JHv1wJKSY3t8c0rbs0N2/DuTLpCSZ0G
MD5 SHA1 SHA512 SSDEEP

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eahtixeat.exe

Path C:\Windows\SysWOW64\eahtixeat.exe
Size 71KB
SHA256 fbbf3c521c2675a9eb1e6d80d82775062e4254c9f82de5b178e86312d30e773b
MD5 0b015fd0c1d8c3399b2e6b31e076b925
SHA1 619c440aea397027ac2f2ea769abc51f1dfe4c4a
SHA512 93eeab69a1352130f74083b6fb230f289777b45599e7f2b0ac9c333fc5a9945161218234da3e3a0fbdfdb38fa6e95627b997860fcb05249038a50c2f23ee496d
SSDEEP 1536:xAyToPledgGkAlSt9yzkwUk6Nr5kEHIwAbfT:3hgRAlStYzkrJNFkEHsT
MD5 SHA1 SHA512 SSDEEP

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ugsamid.exe

Path C:\Windows\SysWOW64\ugsamid.exe
Size 69KB
SHA256 e1a103791a74876499adafef1291a3953b8fbfd4328495d0f945c9bd8dd0c02e
MD5 c2d454e3daf6aafad0a08fa1195e34fd
SHA1 b7c35b1d14f6321316c1fdaa71ad39464a3763a2
SHA512 2abbc87e0d43532cf1887739b353740d26ef8dd1d954bb4058fac94862672608e8f167e9ea763bb69cee3c930648035d3c20df819cdd4c84644d7d096a471039
SSDEEP 1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8s:Olg35GTslA5t3/w8s
MD5 SHA1 SHA512 SSDEEP

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memory/4292-4-0x0000000000400000-0x0000000000414000-memory.dmp

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