4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19-04-2024 21:25

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General

Target

4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f.exe
Size

70KB
MD5

7fe457a396a7da4049c15582f0f1492a
SHA1

bb4de9fb33a5999cb62024f75316416309cdda76
SHA256

4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f
SHA512

2319b0ef2f63b065c9392d1a7374cf13af4fd258013ab163faa0a2d82708a51b6b8ae090984662923526937ae42d681c79b57d8ad1cd047fb6e993600146512c
SSDEEP

1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8v0:Olg35GTslA5t3/w88

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"	oulsoodom.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	oulsoodom.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	oulsoodom.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	oulsoodom.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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4A455342-485a-5457-4A45-5342485A5457}	oulsoodom.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4A455342-485a-5457-4A45-5342485A5457}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	oulsoodom.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4A455342-485a-5457-4A45-5342485A5457}\IsInstalled = "1"	oulsoodom.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4A455342-485a-5457-4A45-5342485A5457}\StubPath = "C:\\Windows\\system32\\ifkinuv.exe"	oulsoodom.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	oulsoodom.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	oulsoodom.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ouxfifib-ahor.exe"	oulsoodom.exe

Executes dropped EXE 2 IoCs

pid	Process
4456	oulsoodom.exe
3100	oulsoodom.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\AntiVirusDisableNotify = "25600"	oulsoodom.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	oulsoodom.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	oulsoodom.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	oulsoodom.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}	oulsoodom.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	oulsoodom.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	oulsoodom.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\ouvfotis.dll"	oulsoodom.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	oulsoodom.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\oulsoodom.exe	4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f.exe
File created	C:\Windows\SysWOW64\ifkinuv.exe	oulsoodom.exe
File opened for modification	C:\Windows\SysWOW64\ouvfotis.dll	oulsoodom.exe
File created	C:\Windows\SysWOW64\ouvfotis.dll	oulsoodom.exe
File opened for modification	C:\Windows\SysWOW64\oulsoodom.exe	oulsoodom.exe
File created	C:\Windows\SysWOW64\oulsoodom.exe	4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f.exe
File opened for modification	C:\Windows\SysWOW64\ouxfifib-ahor.exe	oulsoodom.exe
File created	C:\Windows\SysWOW64\ouxfifib-ahor.exe	oulsoodom.exe
File opened for modification	C:\Windows\SysWOW64\ifkinuv.exe	oulsoodom.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
3100	oulsoodom.exe
3100	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe
4456	oulsoodom.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5104	4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f.exe
Token: SeDebugPrivilege	4456	oulsoodom.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 5104 wrote to memory of 4456	5104	4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f.exe	85
PID 5104 wrote to memory of 4456	5104	4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f.exe	85
PID 5104 wrote to memory of 4456	5104	4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f.exe	85
PID 4456 wrote to memory of 604	4456	oulsoodom.exe	5
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3100	4456	oulsoodom.exe	86
PID 4456 wrote to memory of 3100	4456	oulsoodom.exe	86
PID 4456 wrote to memory of 3100	4456	oulsoodom.exe	86
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56
PID 4456 wrote to memory of 3532	4456	oulsoodom.exe	56

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:604

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3532
- C:\Users\Admin\AppData\Local\Temp\4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f.exe
  "C:\Users\Admin\AppData\Local\Temp\4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f.exe"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5104
- - C:\Windows\SysWOW64\oulsoodom.exe
    "C:\Windows\system32\oulsoodom.exe"
    3⤵
    - Windows security bypass
    - Modifies Installed Components in the registry
    - Sets file execution options in registry
    - Executes dropped EXE
    - Windows security modification
    - Modifies WinLogon
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4456
  - - C:\Windows\SysWOW64\oulsoodom.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:3100

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\ifkinuv.exe

Filesize
72KB

MD5
073a655fd1b4b5897a67e2504a9ebcc3

SHA1
2fe2487a24ebcc57f56a9ff8d3ce398b7e6dd5e9

SHA256
793767bd3a301e47b3fd8ecc38ccb4d58d76181d2d526623193c2eb8e19bf980

SHA512
d28cbf99403d4fecb64cb23fcf4772fced06b41780aafe447537fc614b5448b642824692bf607ffb2f9e05fa1bae02dd062922c3854155e798258bb604784f2b

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

Filesize
70KB

MD5
7fe457a396a7da4049c15582f0f1492a

SHA1
bb4de9fb33a5999cb62024f75316416309cdda76

SHA256
4eb40a4987445701674ab03900a86804850889b352034a1b8b262146a97e674f

SHA512
2319b0ef2f63b065c9392d1a7374cf13af4fd258013ab163faa0a2d82708a51b6b8ae090984662923526937ae42d681c79b57d8ad1cd047fb6e993600146512c

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

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

Download Submit
C:\Windows\SysWOW64\ouxfifib-ahor.exe

Filesize
73KB

MD5
73a090612b3fe5293496858f45ac07fe

SHA1
1fb53aa41966755f843a20ec2cf94f1bce833eab

SHA256
82f2d22817306447dfe605a66abe6fd5f99543de19bf722ba3859abbf2849254

SHA512
f68d0c64fa13e72501acdeb969d6c029db6643c2cf8c8028a3adea1e54d696b869e4700e37a8f7e58f8904c8908224545f46569ad917fe11a86341301ea0ed43

Download Submit
memory/5104-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download