88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6

Analysis

max time kernel
149s
max time network
150s
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 16:36

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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

Processes:

tmoopeg.exe

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

Processes:

tmoopeg.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F5A4D43-5653-5153-4F5A-4D4356535153}	tmoopeg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F5A4D43-5653-5153-4F5A-4D4356535153}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	tmoopeg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F5A4D43-5653-5153-4F5A-4D4356535153}\IsInstalled = "1"	tmoopeg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F5A4D43-5653-5153-4F5A-4D4356535153}\StubPath = "C:\\Windows\\system32\\acberab.exe"	tmoopeg.exe

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

persistence

Image File Execution Options Injection

T1546.012

Processes:

tmoopeg.exe

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe	tmoopeg.exe

Executes dropped EXE 2 IoCs

Processes:

tmoopeg.exetmoopeg.exe

pid	Process
832	tmoopeg.exe
2216	tmoopeg.exe

Windows security modification 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

tmoopeg.exe

description	ioc	Process
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
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

Indicator Removal: Clear Persistence 1 TTPs 1 IoCs

remove IFEO.

defense_evasion

Clear Persistence

T1070.009

Processes:

tmoopeg.exe

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

Processes:

tmoopeg.exe

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}	tmoopeg.exe

Drops file in System32 directory 9 IoCs

Processes:

88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exetmoopeg.exe

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

Processes:

tmoopeg.exetmoopeg.exe88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

tmoopeg.exetmoopeg.exe

pid	Process
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
2216	tmoopeg.exe
2216	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe
832	tmoopeg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exetmoopeg.exe

description	pid	Process
Token: SeDebugPrivilege	1788	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
Token: SeDebugPrivilege	832	tmoopeg.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exetmoopeg.exe

description	pid	Process	procid_target
PID 1788 wrote to memory of 832	1788	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	81
PID 1788 wrote to memory of 832	1788	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	81
PID 1788 wrote to memory of 832	1788	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	81
PID 832 wrote to memory of 2216	832	tmoopeg.exe	82
PID 832 wrote to memory of 2216	832	tmoopeg.exe	82
PID 832 wrote to memory of 2216	832	tmoopeg.exe	82

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:1788
- 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:832
- - C:\Windows\SysWOW64\tmoopeg.exe
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    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2216

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
834ebde07280c2408639b8d61ada273a

SHA1
2d31a9221f720c34824f45912afc8f7a4b1e4c24

SHA256
1ebb8b8f026450ba152c24c676c3118b279bf641319c359fde37ec221b112ec0

SHA512
7cd538a122b8f44639c050b300a09ce58eaf6050099d68ba8c77203c1745e84d6d2bad88ae7c37907449114f789dcd563d2188977800c91b3cb6fb958fa16e2e

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
aae07c8701f34acb1b34fbf0ff8bb985

SHA1
d2a3665e2eeef43743fe94401d407ff90cf94904

SHA256
2138b4ae95d4dc630f069238dc30a46c771e99031e8c84f4eb50ade0ac2833f7

SHA512
53fafbdbf85017139811553a93da7b1f3c654ab97b628d3e6c6e62cc2e148a6225f60170bc92073e8348cdb363df75f3472fd991e2173617f3567369a10d45b6

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

Filesize
80KB

MD5
20a45d9ae451382a786fd41e3360ae2e

SHA1
4031c1473794671edbe1caebcacf5aeff4d6955b

SHA256
88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6

SHA512
b5f1ee0c8049be04f8be61fd28b973a9b0950d7de79952d85701964af574594909d022cb8a114990ff69454fdbc9aeaaddc612cf20572e2005210be3cf92360f

Download Submit
memory/832-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1788-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2216-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download