e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d

Analysis

max time kernel
149s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
08-03-2024 01:10

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General

Target

e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe
Size

68KB
MD5

975294c253bb3e96ac1c24d9e2ab1c18
SHA1

4b063b1ee304a6289c4c29238d92800c3fdd43fa
SHA256

e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d
SHA512

944121457a36247442091c62a67d3c00580caa21966fcfffbdf6ba359b8c1bb2825bb982507b5dbd1c8ba04ab815c6a851d3f29247a05d302cea37656eb1b21a
SSDEEP

1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8h:Olg35GTslA5t3/w8h

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"	ulboocob.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	ulboocob.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	ulboocob.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	ulboocob.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 (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{484B554C-4249-4255-484B-554C42494255}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	ulboocob.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{484B554C-4249-4255-484B-554C42494255}\IsInstalled = "1"	ulboocob.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{484B554C-4249-4255-484B-554C42494255}\StubPath = "C:\\Windows\\system32\\evboxat.exe"	ulboocob.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{484B554C-4249-4255-484B-554C42494255}	ulboocob.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	ulboocob.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ipherup.exe"	ulboocob.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe	ulboocob.exe

Executes dropped EXE 2 IoCs

pid	Process
2892	ulboocob.exe
2644	ulboocob.exe

Loads dropped DLL 3 IoCs

pid	Process
1968	e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe
1968	e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe
2892	ulboocob.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"	ulboocob.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	ulboocob.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	ulboocob.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	ulboocob.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}	ulboocob.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	ulboocob.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	ulboocob.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\acxigoos.dll"	ulboocob.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	ulboocob.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ulboocob.exe	e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe
File opened for modification	C:\Windows\SysWOW64\ipherup.exe	ulboocob.exe
File created	C:\Windows\SysWOW64\ipherup.exe	ulboocob.exe
File opened for modification	C:\Windows\SysWOW64\evboxat.exe	ulboocob.exe
File created	C:\Windows\SysWOW64\ulboocob.exe	e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe
File created	C:\Windows\SysWOW64\evboxat.exe	ulboocob.exe
File opened for modification	C:\Windows\SysWOW64\acxigoos.dll	ulboocob.exe
File created	C:\Windows\SysWOW64\acxigoos.dll	ulboocob.exe
File opened for modification	C:\Windows\SysWOW64\ulboocob.exe	ulboocob.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2644	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe
2892	ulboocob.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe
Token: SeDebugPrivilege	2892	ulboocob.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2892	1968	e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe	28
PID 1968 wrote to memory of 2892	1968	e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe	28
PID 1968 wrote to memory of 2892	1968	e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe	28
PID 1968 wrote to memory of 2892	1968	e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe	28
PID 2892 wrote to memory of 436	2892	ulboocob.exe	5
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 2644	2892	ulboocob.exe	29
PID 2892 wrote to memory of 2644	2892	ulboocob.exe	29
PID 2892 wrote to memory of 2644	2892	ulboocob.exe	29
PID 2892 wrote to memory of 2644	2892	ulboocob.exe	29
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21
PID 2892 wrote to memory of 1176	2892	ulboocob.exe	21

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

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1176
- C:\Users\Admin\AppData\Local\Temp\e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe
  "C:\Users\Admin\AppData\Local\Temp\e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Windows\SysWOW64\ulboocob.exe
    "C:\Windows\system32\ulboocob.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:2892
  - - C:\Windows\SysWOW64\ulboocob.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:2644

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\acxigoos.dll

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

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

Filesize
70KB

MD5
2e3dfa0468df238d2f698d68b8262b2d

SHA1
bc1ffc4619e5c32784ce4687f4e0ee7c4dc1f43b

SHA256
71b68b3b1cd7ce94b6ade2fab47d6e142f8bdf1d1a1a355ddc53b6c3fa5bf49c

SHA512
4606e6c6e1105d420da057fac45b0c96d90f52924b6139fae2160bfc425f53514c9b9577347ac6ce05d3a1497caf40151823bae5c4158e3da559667b07e50f21

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

Filesize
71KB

MD5
9d473c0646e4233b314aa77e6455f805

SHA1
39aa879dd047b393bd4512f985a00901bcb97b70

SHA256
c0400eea8002ed94bf8fca56f2c50800bfd7d0f9d5e506f1f4629b0c254acec1

SHA512
4e20ebbe2facfe72a913c5ed0ab0ed98f190445ee82ae6e0369630a0c1365996552c9d4ec151d8f8e137798aafd4c0925b9dac057ef3ee2dc771b6812d3a47ca

Download Submit
\Windows\SysWOW64\ulboocob.exe

Filesize
68KB

MD5
975294c253bb3e96ac1c24d9e2ab1c18

SHA1
4b063b1ee304a6289c4c29238d92800c3fdd43fa

SHA256
e401299998d81e423d5ee13cfeef096375619be8fee45db93b9da392e329df7d

SHA512
944121457a36247442091c62a67d3c00580caa21966fcfffbdf6ba359b8c1bb2825bb982507b5dbd1c8ba04ab815c6a851d3f29247a05d302cea37656eb1b21a

Download Submit
memory/1968-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2644-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2892-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download