a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab

Analysis

max time kernel
149s
max time network
121s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
12/05/2024, 01:46

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General

Target

a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe
Size

72KB
MD5

1e57bfe9b8d6adbccae220e1cad3089e
SHA1

3e31dd29675b4be9c28a88768be66973f8410611
SHA256

a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab
SHA512

776323a61de8805dbd371f074700abe977b3a7bd9ea33cdc8ff8352c3fa0bcc523d40514376a228a0e14c682673341d486beef0479635e65164b88f3ef2339a8
SSDEEP

1536:xAyToPledgGkAlSt9yzkwUk6Nr5kEHIwA4:3hgRAlStYzkrJNFkEH9

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"	ohfokev-atat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	ohfokev-atat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	ohfokev-atat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	ohfokev-atat.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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5549424E-514e-4d41-5549-424E514E4d41}	ohfokev-atat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5549424E-514e-4d41-5549-424E514E4d41}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	ohfokev-atat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5549424E-514e-4d41-5549-424E514E4d41}\IsInstalled = "1"	ohfokev-atat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5549424E-514e-4d41-5549-424E514E4d41}\StubPath = "C:\\Windows\\system32\\eambeanig.exe"	ohfokev-atat.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	ohfokev-atat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	ohfokev-atat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ocgacoob.exe"	ohfokev-atat.exe

Executes dropped EXE 2 IoCs

pid	Process
3048	ohfokev-atat.exe
1572	ohfokev-atat.exe

Loads dropped DLL 3 IoCs

pid	Process
3024	a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe
3024	a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe
3048	ohfokev-atat.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\FirewallDisableNotify = "25600"	ohfokev-atat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	ohfokev-atat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	ohfokev-atat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	ohfokev-atat.exe

Modifies WinLogon 2 TTPs 5 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	ohfokev-atat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\ouvheket.dll"	ohfokev-atat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	ohfokev-atat.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}	ohfokev-atat.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	ohfokev-atat.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ohfokev-atat.exe	ohfokev-atat.exe
File opened for modification	C:\Windows\SysWOW64\ohfokev-atat.exe	a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe
File opened for modification	C:\Windows\SysWOW64\ouvheket.dll	ohfokev-atat.exe
File created	C:\Windows\SysWOW64\ouvheket.dll	ohfokev-atat.exe
File opened for modification	C:\Windows\SysWOW64\eambeanig.exe	ohfokev-atat.exe
File created	C:\Windows\SysWOW64\eambeanig.exe	ohfokev-atat.exe
File created	C:\Windows\SysWOW64\ohfokev-atat.exe	a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe
File opened for modification	C:\Windows\SysWOW64\ocgacoob.exe	ohfokev-atat.exe
File created	C:\Windows\SysWOW64\ocgacoob.exe	ohfokev-atat.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
1572	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe
3048	ohfokev-atat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3048	ohfokev-atat.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 3048	3024	a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe	28
PID 3024 wrote to memory of 3048	3024	a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe	28
PID 3024 wrote to memory of 3048	3024	a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe	28
PID 3024 wrote to memory of 3048	3024	a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe	28
PID 3048 wrote to memory of 432	3048	ohfokev-atat.exe	5
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1572	3048	ohfokev-atat.exe	29
PID 3048 wrote to memory of 1572	3048	ohfokev-atat.exe	29
PID 3048 wrote to memory of 1572	3048	ohfokev-atat.exe	29
PID 3048 wrote to memory of 1572	3048	ohfokev-atat.exe	29
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21
PID 3048 wrote to memory of 1192	3048	ohfokev-atat.exe	21

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:432

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1192
- C:\Users\Admin\AppData\Local\Temp\a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe
  "C:\Users\Admin\AppData\Local\Temp\a2b02ba38dff258acae67438e2dc428e7a59fae6925ac0bf0e5da9e50eefaeab.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3024
- - C:\Windows\SysWOW64\ohfokev-atat.exe
    "C:\Windows\SysWOW64\ohfokev-atat.exe"
    3⤵
    - Windows security bypass
    - Modifies Installed Components in the registry
    - Sets file execution options in registry
    - 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:3048
  - - C:\Windows\SysWOW64\ohfokev-atat.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:1572

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\eambeanig.exe

Filesize
72KB

MD5
1d26cbcffe1b473971b30e73a94da8ce

SHA1
9733f9974b1a9d06999283ce36f9a83973c488d8

SHA256
6110a5db61698cd9bbc65f718077d369447da4227114ac17dd2381e5874d6f6d

SHA512
2905914651b5ea7ea86070faf9d33183a307b79f5c6cbe7243f857a9e1bd2e5c35db6b7c3fbca3e0fd8ff43d5fcdacee783930eb0628563fac8b04bece0cf97a

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

Filesize
73KB

MD5
320d7629a8719cb1461dd47410685b8a

SHA1
6d728c6b964aab077c53ad9b20a768c91d58c4b1

SHA256
07c181a10ee9371dca0444f786bb29206598577f07abba9b48bd07c1b6eadb1c

SHA512
a52f1eb2ef1c82cff4271e4293568b22e2b372abf9686ddd89c1fec48152dbe33dce95ab9d9315dbe0c39334a0e598d8ac895047e1f0e26e525531493e58dc06

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

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

Download Submit
\Windows\SysWOW64\ohfokev-atat.exe

Filesize
70KB

MD5
be86e6ea1d575a488521b29065e0adb0

SHA1
91ca25bf222840c7337b60d870385e122405bec7

SHA256
48e8e5a596d86a18f5c1ff13b8d80f75c6decb5f956b4168f77efcc2c2b154cf

SHA512
b51b17f0fe1608a9940b3227f5c37ea48577c94984cf5cbc4f45485a27898724f22329b002cc675076a0ad59351672f64969a3a646fa8a33d5522fd2687b25f1

Download Submit
memory/1572-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3024-7-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/3048-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download