a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4

Analysis

max time kernel
149s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 02:51

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General

Target

a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe
Size

81KB
MD5

ddd373fcb79591bde864941b65d905c7
SHA1

32f427208c621919cc466a32cc25b462f9c02e4c
SHA256

a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4
SHA512

c951a2ba1d7d0c08888b03ef9ab9541a72e98ddf033839df301aaf16c24540453014fb9936369d603b3a2a09af85a4012430682172757da00a9226c43c187b9c
SSDEEP

1536:BteqGDlXvCDB04f5Gn/L8ZlALNtnd17i9wk:Olg35GTclABtnDi9wk

Score

10^/10

defense_evasion discovery evasion persistence trojan

Malware Config

Signatures

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

omvoohoav.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	omvoohoav.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	omvoohoav.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	omvoohoav.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	omvoohoav.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.

persistence

Active Setup

T1547.014

Modify Registry

T1112

Processes:

omvoohoav.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{55504E45-4356-4955-5550-4E4543564955}\IsInstalled = "1"	omvoohoav.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{55504E45-4356-4955-5550-4E4543564955}\StubPath = "C:\\Windows\\system32\\atdegup.exe"	omvoohoav.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{55504E45-4356-4955-5550-4E4543564955}	omvoohoav.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{55504E45-4356-4955-5550-4E4543564955}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	omvoohoav.exe

Event Triggered Execution: Image File Execution Options Injection 1 TTPs 3 IoCs

persistence

Image File Execution Options Injection

T1546.012

Processes:

omvoohoav.exe

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

Executes dropped EXE 2 IoCs

Processes:

omvoohoav.exeomvoohoav.exe

pid	Process
2124	omvoohoav.exe
2380	omvoohoav.exe

Loads dropped DLL 3 IoCs

Processes:

a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exeomvoohoav.exe

pid	Process
1800	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe
1800	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe
2124	omvoohoav.exe

Windows security modification 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

omvoohoav.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	omvoohoav.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	omvoohoav.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	omvoohoav.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	omvoohoav.exe

Indicator Removal: Clear Persistence 1 TTPs 1 IoCs

remove IFEO.

defense_evasion

Clear Persistence

T1070.009

Processes:

omvoohoav.exe

description	ioc	Process
Delete value	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger	omvoohoav.exe

Modifies WinLogon 2 TTPs 5 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

omvoohoav.exe

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

Drops file in System32 directory 9 IoCs

Processes:

a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exeomvoohoav.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\omvoohoav.exe	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe
File created	C:\Windows\SysWOW64\aproaxeap-eacex.exe	omvoohoav.exe
File opened for modification	C:\Windows\SysWOW64\atdegup.exe	omvoohoav.exe
File opened for modification	C:\Windows\SysWOW64\pvohear.dll	omvoohoav.exe
File opened for modification	C:\Windows\SysWOW64\omvoohoav.exe	omvoohoav.exe
File created	C:\Windows\SysWOW64\omvoohoav.exe	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe
File opened for modification	C:\Windows\SysWOW64\aproaxeap-eacex.exe	omvoohoav.exe
File created	C:\Windows\SysWOW64\atdegup.exe	omvoohoav.exe
File created	C:\Windows\SysWOW64\pvohear.dll	omvoohoav.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exeomvoohoav.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	omvoohoav.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

omvoohoav.exeomvoohoav.exe

pid	Process
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2380	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe
2124	omvoohoav.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exeomvoohoav.exe

description	pid	Process
Token: SeDebugPrivilege	1800	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe
Token: SeDebugPrivilege	2124	omvoohoav.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exeomvoohoav.exe

description	pid	Process	procid_target
PID 1800 wrote to memory of 2124	1800	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe	30
PID 1800 wrote to memory of 2124	1800	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe	30
PID 1800 wrote to memory of 2124	1800	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe	30
PID 1800 wrote to memory of 2124	1800	a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe	30
PID 2124 wrote to memory of 420	2124	omvoohoav.exe	5
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 2380	2124	omvoohoav.exe	31
PID 2124 wrote to memory of 2380	2124	omvoohoav.exe	31
PID 2124 wrote to memory of 2380	2124	omvoohoav.exe	31
PID 2124 wrote to memory of 2380	2124	omvoohoav.exe	31
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21
PID 2124 wrote to memory of 1204	2124	omvoohoav.exe	21

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:420

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1204
- C:\Users\Admin\AppData\Local\Temp\a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe
  "C:\Users\Admin\AppData\Local\Temp\a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1800
- - C:\Windows\SysWOW64\omvoohoav.exe
    "C:\Windows\system32\omvoohoav.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
    - Indicator Removal: Clear Persistence
    - Modifies WinLogon
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2124
  - - C:\Windows\SysWOW64\omvoohoav.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:2380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

Image File Execution Options Injection

T1546.012

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

Image File Execution Options Injection

T1546.012

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Indicator Removal

T1070

Clear Persistence

T1070.009

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\aproaxeap-eacex.exe

Filesize
84KB

MD5
e4a80a1a9356e36151d21363c777bcfa

SHA1
549a2f7a0be70c58e4ccb6d5076477a4c44f4fd9

SHA256
36576c99a3e20f9a9283bf1bb872710064e79fbf4ca4f6a21c0f66a2de563fad

SHA512
ed83a45795cbb7f0a81dec6f9de7061a4d6bae81a5776e2d8b272ec249fd85f55fc94a351bd4642fd8d1f0c00deb026cc5e608a89433f0fa70ecbcd66351c20d

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

Filesize
83KB

MD5
364cea87fae83546ffedbb74b22a9c76

SHA1
dac3da8eef2a726be3b359334e27266c210c5cb0

SHA256
2227cdfe66eb75710f5162f1fc1af9828ee3a6a868bab09c7140a2dd5577ac44

SHA512
ebdf6dd7dce05e4532d99882ac766fdc4b1e6f3819f2ed769c0cab22ff7289381da3901f5b04bdac2b9435194be39eea00cfcb97889fdae8bd0b311692bad9d4

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

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

Download Submit
\Windows\SysWOW64\omvoohoav.exe

Filesize
81KB

MD5
ddd373fcb79591bde864941b65d905c7

SHA1
32f427208c621919cc466a32cc25b462f9c02e4c

SHA256
a682ca54976034954cf37942a5af3e8d4004fcad800ee3f0e8374b2858a312e4

SHA512
c951a2ba1d7d0c08888b03ef9ab9541a72e98ddf033839df301aaf16c24540453014fb9936369d603b3a2a09af85a4012430682172757da00a9226c43c187b9c

Download Submit
memory/1800-9-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2124-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2380-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download