88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6

Analysis

max time kernel
119s
max time network
17s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{43434A42-5654-4751-4343-4A4256544751}	tmoopeg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{43434A42-5654-4751-4343-4A4256544751}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	tmoopeg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{43434A42-5654-4751-4343-4A4256544751}\IsInstalled = "1"	tmoopeg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{43434A42-5654-4751-4343-4A4256544751}\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

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

pid	Process
2184	tmoopeg.exe
2304	tmoopeg.exe

Loads dropped DLL 3 IoCs

pid	Process
2232	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
2232	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
2184	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\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

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

description	ioc	Process
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
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2304	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe
2184	tmoopeg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2232	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
Token: SeDebugPrivilege	2184	tmoopeg.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2184	2232	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	31
PID 2232 wrote to memory of 2184	2232	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	31
PID 2232 wrote to memory of 2184	2232	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	31
PID 2232 wrote to memory of 2184	2232	88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe	31
PID 2184 wrote to memory of 2304	2184	tmoopeg.exe	32
PID 2184 wrote to memory of 2304	2184	tmoopeg.exe	32
PID 2184 wrote to memory of 2304	2184	tmoopeg.exe	32
PID 2184 wrote to memory of 2304	2184	tmoopeg.exe	32

C:\Users\Admin\AppData\Local\Temp\88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe
"C:\Users\Admin\AppData\Local\Temp\88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2232
- 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
  - 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:2184
- - C:\Windows\SysWOW64\tmoopeg.exe
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    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:2304

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
cd7aac45e1158a51f7c8199e43dd6cfe

SHA1
462b54a360f49da53140e1f4c4d5f5eef7fbff9a

SHA256
5eb7b4b108e16296d436e7000242319abce6ac1f163b5940267d075a876da480

SHA512
f1f79cc959b4557dc934035e76ff0dc419d7d353f59f079c42efb3068ec191b9ebf815390da0bfc8cba93335d5606d1703155471b8bc345b60d3a8f4b37099f8

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
133f79c5682a90bb180aa2dd0bfaeec3

SHA1
d2e91f13364a9e1c4de347681db0d7d8c3122e23

SHA256
d9ab2ac01b13d9f6652169c78f0b6be9b7e948a40922601e4d8b7669654d3837

SHA512
943cd410b8e22eb2bb659fd8397566c5e7d12cfb99ce8e00daf70d4ae0533b26a76e24e0a2655cf5c8dd19f8907b848290d2004361428f441977b7c8650f4aeb

Download Submit
\Windows\SysWOW64\tmoopeg.exe

Filesize
80KB

MD5
20a45d9ae451382a786fd41e3360ae2e

SHA1
4031c1473794671edbe1caebcacf5aeff4d6955b

SHA256
88eaa3c9b225811421a5e00376e452c9826d29e98c772f73e9d6be28051dcfc6

SHA512
b5f1ee0c8049be04f8be61fd28b973a9b0950d7de79952d85701964af574594909d022cb8a114990ff69454fdbc9aeaaddc612cf20572e2005210be3cf92360f

Download Submit
memory/2184-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2232-9-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2304-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download