7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403

Analysis

max time kernel
149s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
05-05-2024 01:08

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General

Target

7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe
Size

70KB
MD5

bbf91866c7f6e89eaadf41c35fda5bd0
SHA1

b83ae6482b8a388e0f6a0ea976ec3cdfc69c194f
SHA256

7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403
SHA512

382e5b00751f63933f8c849154f5b57551138980b6293e7a3a3beca24dac003a2bc56d8b5e2289e689e7f888b68fffe5c1ce3b3b734a16c1e741d6446514ce4f
SSDEEP

1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8sldT+:Olg35GTslA5t3/w8YS

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"	oukcuteab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	oukcuteab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	oukcuteab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	oukcuteab.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 (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4249534D-495a-4858-4249-534D495A4858}\IsInstalled = "1"	oukcuteab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4249534D-495a-4858-4249-534D495A4858}\StubPath = "C:\\Windows\\system32\\urkooxat.exe"	oukcuteab.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4249534D-495a-4858-4249-534D495A4858}	oukcuteab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4249534D-495a-4858-4249-534D495A4858}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	oukcuteab.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	oukcuteab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	oukcuteab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\offoates-aboot.exe"	oukcuteab.exe

Executes dropped EXE 2 IoCs

pid	Process
2688	oukcuteab.exe
2540	oukcuteab.exe

Loads dropped DLL 3 IoCs

pid	Process
2916	7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe
2916	7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe
2688	oukcuteab.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"	oukcuteab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	oukcuteab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	oukcuteab.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	oukcuteab.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}	oukcuteab.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	oukcuteab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	oukcuteab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\dmutud.dll"	oukcuteab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	oukcuteab.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\dmutud.dll	oukcuteab.exe
File opened for modification	C:\Windows\SysWOW64\oukcuteab.exe	7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe
File created	C:\Windows\SysWOW64\oukcuteab.exe	7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe
File opened for modification	C:\Windows\SysWOW64\urkooxat.exe	oukcuteab.exe
File created	C:\Windows\SysWOW64\urkooxat.exe	oukcuteab.exe
File created	C:\Windows\SysWOW64\dmutud.dll	oukcuteab.exe
File opened for modification	C:\Windows\SysWOW64\oukcuteab.exe	oukcuteab.exe
File opened for modification	C:\Windows\SysWOW64\offoates-aboot.exe	oukcuteab.exe
File created	C:\Windows\SysWOW64\offoates-aboot.exe	oukcuteab.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2540	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe
2688	oukcuteab.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe
Token: SeDebugPrivilege	2688	oukcuteab.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2688	2916	7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe	28
PID 2916 wrote to memory of 2688	2916	7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe	28
PID 2916 wrote to memory of 2688	2916	7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe	28
PID 2916 wrote to memory of 2688	2916	7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe	28
PID 2688 wrote to memory of 436	2688	oukcuteab.exe	5
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 2540	2688	oukcuteab.exe	29
PID 2688 wrote to memory of 2540	2688	oukcuteab.exe	29
PID 2688 wrote to memory of 2540	2688	oukcuteab.exe	29
PID 2688 wrote to memory of 2540	2688	oukcuteab.exe	29
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20
PID 2688 wrote to memory of 1152	2688	oukcuteab.exe	20

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:436

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1152
- C:\Users\Admin\AppData\Local\Temp\7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe
  "C:\Users\Admin\AppData\Local\Temp\7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\SysWOW64\oukcuteab.exe
    "C:\Windows\system32\oukcuteab.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:2688
  - - C:\Windows\SysWOW64\oukcuteab.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:2540

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\dmutud.dll

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

Download Submit
C:\Windows\SysWOW64\offoates-aboot.exe

Filesize
73KB

MD5
ea71a9497a2b9b9926b2711f89def3ed

SHA1
226acd13d2ad5b6ba5da8d6fc0403685fa6e9bad

SHA256
e4abf2bebfb7205c3741296a2f1d04fef6221b0385c867880ddf645170f61784

SHA512
0bd5cfe7ef11c25d3ab65916bd40eaeaa8821add9531387035612c48f361efb445087da2fae5939f3a3006aa370f14b2730a10ab33a15dce77c1e46583d79512

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

Filesize
72KB

MD5
6ae88d2f6b461eb1c9dc588c1cc6ae80

SHA1
763ad696408b323dabb8c744f0afa78cc867dc84

SHA256
41cc68a856b94e11aea1cf6aba4da032aa204693cffa892289d1b031ea5e5ab8

SHA512
b86dec919155d638be89b7d645ead1e687732c255b34f07487755c3177891a1792551b3e39a3be3d78868a5aa5f43f71ec4d373ed1003f90c2a1559cb6c051fc

Download Submit
\Windows\SysWOW64\oukcuteab.exe

Filesize
70KB

MD5
bbf91866c7f6e89eaadf41c35fda5bd0

SHA1
b83ae6482b8a388e0f6a0ea976ec3cdfc69c194f

SHA256
7d99a127b545c2f9a9fbba7e6245ce1a5aa0052cb2c79195aef7828000ec9403

SHA512
382e5b00751f63933f8c849154f5b57551138980b6293e7a3a3beca24dac003a2bc56d8b5e2289e689e7f888b68fffe5c1ce3b3b734a16c1e741d6446514ce4f

Download Submit
memory/2540-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2916-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download