42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0

Analysis

max time kernel
149s
max time network
122s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
14/05/2024, 21:01

Sharing

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General

Target

42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe
Size

71KB
MD5

52567479f68068d365c58c78a5f71b1b
SHA1

040258d09fc7fb974bca9e214416a5a806a2e3b8
SHA256

42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0
SHA512

3bb1003acf142a35bca807a477d292f3240d077193ae40530e8fba2da2c88f92a7701024c37b49d9e2ed85e9f47784385fd7d58e6a5eac95633dea3fe3fa1689
SSDEEP

1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8sl6:Olg35GTslA5t3/w8F

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"	oucmohoat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	oucmohoat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	oucmohoat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	oucmohoat.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\{554F5448-4350-4851-554F-544843504851}\StubPath = "C:\\Windows\\system32\\oulxekoas-eafix.exe"	oucmohoat.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{554F5448-4350-4851-554F-544843504851}	oucmohoat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{554F5448-4350-4851-554F-544843504851}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	oucmohoat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{554F5448-4350-4851-554F-544843504851}\IsInstalled = "1"	oucmohoat.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	oucmohoat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	oucmohoat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ihcexam-eafat.exe"	oucmohoat.exe

Executes dropped EXE 2 IoCs

pid	Process
1844	oucmohoat.exe
3016	oucmohoat.exe

Loads dropped DLL 3 IoCs

pid	Process
2176	42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe
2176	42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe
1844	oucmohoat.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"	oucmohoat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	oucmohoat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	oucmohoat.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	oucmohoat.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"	oucmohoat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\ovlooxon-iseab.dll"	oucmohoat.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	oucmohoat.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}	oucmohoat.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	oucmohoat.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\oucmohoat.exe	42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe
File created	C:\Windows\SysWOW64\ihcexam-eafat.exe	oucmohoat.exe
File opened for modification	C:\Windows\SysWOW64\ovlooxon-iseab.dll	oucmohoat.exe
File created	C:\Windows\SysWOW64\ovlooxon-iseab.dll	oucmohoat.exe
File opened for modification	C:\Windows\SysWOW64\oucmohoat.exe	oucmohoat.exe
File opened for modification	C:\Windows\SysWOW64\oucmohoat.exe	42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe
File opened for modification	C:\Windows\SysWOW64\ihcexam-eafat.exe	oucmohoat.exe
File opened for modification	C:\Windows\SysWOW64\oulxekoas-eafix.exe	oucmohoat.exe
File created	C:\Windows\SysWOW64\oulxekoas-eafix.exe	oucmohoat.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
3016	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe
1844	oucmohoat.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2176	42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe
Token: SeDebugPrivilege	1844	oucmohoat.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 1844	2176	42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe	28
PID 2176 wrote to memory of 1844	2176	42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe	28
PID 2176 wrote to memory of 1844	2176	42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe	28
PID 2176 wrote to memory of 1844	2176	42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe	28
PID 1844 wrote to memory of 432	1844	oucmohoat.exe	5
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 3016	1844	oucmohoat.exe	29
PID 1844 wrote to memory of 3016	1844	oucmohoat.exe	29
PID 1844 wrote to memory of 3016	1844	oucmohoat.exe	29
PID 1844 wrote to memory of 3016	1844	oucmohoat.exe	29
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21
PID 1844 wrote to memory of 1208	1844	oucmohoat.exe	21

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

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1208
- C:\Users\Admin\AppData\Local\Temp\42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe
  "C:\Users\Admin\AppData\Local\Temp\42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2176
- - C:\Windows\SysWOW64\oucmohoat.exe
    "C:\Windows\system32\oucmohoat.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:1844
  - - C:\Windows\SysWOW64\oucmohoat.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:3016

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\ihcexam-eafat.exe

Filesize
74KB

MD5
8e939a4f264692c2ad5b4b523e977a20

SHA1
d11f18f548659ae87ca04b8b6485ecc86c651da1

SHA256
f2f371809566a0fe11b07ea714d7bed41004d740b832dd8b2b23e54aed24a705

SHA512
4c7c681ae16ca7fe21d0ca4f51d1bb3ad29ee70fc2cd8f63602beb7e58e650928aa9086d614485734bbc85842ded5e026c012412820a98ff52da36bfe4179ec6

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

Filesize
71KB

MD5
52567479f68068d365c58c78a5f71b1b

SHA1
040258d09fc7fb974bca9e214416a5a806a2e3b8

SHA256
42c72f515a28a2465a57e8e2374ea9ea827172e4999e75e6a786a766236011e0

SHA512
3bb1003acf142a35bca807a477d292f3240d077193ae40530e8fba2da2c88f92a7701024c37b49d9e2ed85e9f47784385fd7d58e6a5eac95633dea3fe3fa1689

Download Submit
C:\Windows\SysWOW64\oulxekoas-eafix.exe

Filesize
73KB

MD5
b2890532589bd623d57c83862120bc30

SHA1
8c3e2315d9546e31dca3ce863982b302d32d36f1

SHA256
46d5d21c3794482ca05e1ea1d7f11c4e322073307865ed43a364e0a7caaf31b9

SHA512
bc5ad22d21c2cbc0d0ba8116d612be6d428f9732cfe2b3b852f53f531f66cc795b9c6b2d292310e0e6f3bfca250f1e0661abb66ce663b8ba6e4abcf1df411599

Download Submit
C:\Windows\SysWOW64\ovlooxon-iseab.dll

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

Download Submit
memory/1844-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2176-9-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3016-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download