88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6

Analysis

max time kernel
119s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 16:26

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General

Target

88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
Size

80KB
MD5

20a45d9ae451382a786fd41e3360ae2e
SHA1

4031c1473794671edbe1caebcacf5aeff4d6955b
SHA256

88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6
SHA512

b5f1ee0c8049be04f8be61fd28b973a9b0950d7de79952d85701964af574594909d022cb8a114990ff69454fdbc9aeaaddc612cf20572e2005210be3cf92360f
SSDEEP

1536:BteqGDlXvCDB04f5Gn/L8ZlALNtnd1bKwf/:ulg35GTclABtnzKwf/

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

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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4B424B57-4745-424b-4B42-4B574745424b}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	tmoopeg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4B424B57-4745-424b-4B42-4B574745424b}\IsInstalled = "1"	tmoopeg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4B424B57-4745-424b-4B42-4B574745424b}\StubPath = "C:\\Windows\\system32\\acberab.exe"	tmoopeg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4B424B57-4745-424b-4B42-4B574745424b}	tmoopeg.exe

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

persistence

Image File Execution Options Injection

T1546.012

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

Executes dropped EXE 2 IoCs

pid	Process
5044	tmoopeg.exe
3668	tmoopeg.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"	tmoopeg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	tmoopeg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	tmoopeg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	tmoopeg.exe

Indicator Removal: Clear Persistence 1 TTPs 1 IoCs

remove IFEO.

defense_evasion

Clear Persistence

T1070.009

description	ioc	Process
Delete value	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger	tmoopeg.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}	tmoopeg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	tmoopeg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	tmoopeg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\atvofeak.dll"	tmoopeg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	tmoopeg.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\tmoopeg.exe	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
File opened for modification	C:\Windows\SysWOW64\ouctisuc.exe	tmoopeg.exe
File opened for modification	C:\Windows\SysWOW64\tmoopeg.exe	tmoopeg.exe
File opened for modification	C:\Windows\SysWOW64\atvofeak.dll	tmoopeg.exe
File created	C:\Windows\SysWOW64\atvofeak.dll	tmoopeg.exe
File created	C:\Windows\SysWOW64\tmoopeg.exe	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
File created	C:\Windows\SysWOW64\ouctisuc.exe	tmoopeg.exe
File opened for modification	C:\Windows\SysWOW64\acberab.exe	tmoopeg.exe
File created	C:\Windows\SysWOW64\acberab.exe	tmoopeg.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmoopeg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmoopeg.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
3668	tmoopeg.exe
3668	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe
5044	tmoopeg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3764	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
Token: SeDebugPrivilege	5044	tmoopeg.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 5044	3764	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	83
PID 3764 wrote to memory of 5044	3764	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	83
PID 3764 wrote to memory of 5044	3764	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	83
PID 5044 wrote to memory of 3668	5044	tmoopeg.exe	84
PID 5044 wrote to memory of 3668	5044	tmoopeg.exe	84
PID 5044 wrote to memory of 3668	5044	tmoopeg.exe	84

C:\Users\Admin\AppData\Local\Temp\88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
"C:\Users\Admin\AppData\Local\Temp\88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3764
- C:\Windows\SysWOW64\tmoopeg.exe
  "C:\Windows\system32\tmoopeg.exe"
  2⤵
  - Windows security bypass
  - Boot or Logon Autostart Execution: Active Setup
  - Event Triggered Execution: Image File Execution Options Injection
  - Executes dropped EXE
  - 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:5044
- - C:\Windows\SysWOW64\tmoopeg.exe
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    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3668

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\acberab.exe

Filesize
82KB

MD5
b95efdc8afd3ce51ce79ca5170a635b9

SHA1
d89fcdd4fcf4d43ac8dec7a7bdbeab8b44e95e8b

SHA256
703820e093c8ae976b6b4db35e17b69346e95d7a740de01d12eb2b85eae99a0d

SHA512
68e6b3c935f3d63fe9e1bff0a850b2a33fb67dd58d195b7bfbc3e81337571c82bf2aed64bfcfc2ce485dbf4b62f0bd62af1e330f8ce425aa698d0283e47799e8

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

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

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

Filesize
83KB

MD5
3c9f69224605bdd4d46a35a93a5020d6

SHA1
e6b21cdbb2c3cd2ee3ad482973c9f3a19b6cede2

SHA256
a04ed68ee60ee821bc55a214279e8dd49c61e48870185e2dd9b0fb92844dcb3d

SHA512
e6289c7bee4835127b627e3d1b6575c2975ed82263bff9c0bdd85de3862d5ab2d86ff671ab27d25f1cd540fec51454bf727c7f4def72a800298a26fe84d0fe54

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

Filesize
80KB

MD5
20a45d9ae451382a786fd41e3360ae2e

SHA1
4031c1473794671edbe1caebcacf5aeff4d6955b

SHA256
88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6

SHA512
b5f1ee0c8049be04f8be61fd28b973a9b0950d7de79952d85701964af574594909d022cb8a114990ff69454fdbc9aeaaddc612cf20572e2005210be3cf92360f

Download Submit
memory/3668-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3764-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5044-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download