b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f

Analysis

max time kernel
149s
max time network
122s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
16-05-2024 02:23

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General

Target

b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe
Size

73KB
MD5

4fe28d98bbe0f7050f82b7f48b4063c0
SHA1

c8b71fb6bb65e612e73231649bf525634d49ce88
SHA256

b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f
SHA512

410bbf57cca23b9d11662eda9ff51b0441fa15b224bb77c9cd98a0da4178e017159bc813858e6084cc126a261cdcdce73a1f7276c7f2264d65b6c6e6fee3216e
SSDEEP

768:x/nlrF9TAbYmFr1BndWdhKjJFJLLeTYSOmPPxfXjGca8Iaxqm4Ts9s5qCfRpXMRo:x5FNAlTnd+5rO0PxfXZVBZq5qYXMER

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"	uxhukok.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	uxhukok.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	uxhukok.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	uxhukok.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\{554F5448-4350-4851-554F-544843504851}	uxhukok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{554F5448-4350-4851-554F-544843504851}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	uxhukok.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{554F5448-4350-4851-554F-544843504851}\IsInstalled = "1"	uxhukok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{554F5448-4350-4851-554F-544843504851}\StubPath = "C:\\Windows\\system32\\usmeapuv.exe"	uxhukok.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	uxhukok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	uxhukok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ukkunun-uxac.exe"	uxhukok.exe

Executes dropped EXE 2 IoCs

pid	Process
2100	uxhukok.exe
2580	uxhukok.exe

Loads dropped DLL 3 IoCs

pid	Process
3048	b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe
3048	b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe
2100	uxhukok.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"	uxhukok.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	uxhukok.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	uxhukok.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	uxhukok.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}	uxhukok.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	uxhukok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	uxhukok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\uptexec-xex.dll"	uxhukok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	uxhukok.exe

Drops file in System32 directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\usmeapuv.exe	uxhukok.exe
File created	C:\Windows\SysWOW64\usmeapuv.exe	uxhukok.exe
File opened for modification	C:\Windows\SysWOW64\uptexec-xex.dll	uxhukok.exe
File opened for modification	C:\Windows\SysWOW64\uxhukok.exe	b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe
File created	C:\Windows\SysWOW64\uxhukok.exe	b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe
File opened for modification	C:\Windows\SysWOW64\ukkunun-uxac.exe	uxhukok.exe
File created	C:\Windows\SysWOW64\ukkunun-uxac.exe	uxhukok.exe
File created	C:\Windows\SysWOW64\uptexec-xex.dll	uxhukok.exe
File opened for modification	C:\Windows\SysWOW64\uxhukok.exe	uxhukok.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2580	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe
2100	uxhukok.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	uxhukok.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2100	3048	b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe	28
PID 3048 wrote to memory of 2100	3048	b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe	28
PID 3048 wrote to memory of 2100	3048	b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe	28
PID 3048 wrote to memory of 2100	3048	b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe	28
PID 2100 wrote to memory of 432	2100	uxhukok.exe	5
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 2580	2100	uxhukok.exe	29
PID 2100 wrote to memory of 2580	2100	uxhukok.exe	29
PID 2100 wrote to memory of 2580	2100	uxhukok.exe	29
PID 2100 wrote to memory of 2580	2100	uxhukok.exe	29
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21
PID 2100 wrote to memory of 1200	2100	uxhukok.exe	21

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:432

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1200
- C:\Users\Admin\AppData\Local\Temp\b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe
  "C:\Users\Admin\AppData\Local\Temp\b4513956a875061e47fa79278fe9d0b76268306a1f92eeff5b7f327093a4094f.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Windows\SysWOW64\uxhukok.exe
    "C:\Windows\SysWOW64\uxhukok.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:2100
  - - C:\Windows\SysWOW64\uxhukok.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:2580

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\ukkunun-uxac.exe

Filesize
74KB

MD5
a0a0d42ae48f337bc88c1b977bba22e2

SHA1
67e9d6bfb72bde7449676ae459233bd024973aa6

SHA256
4700cf5d9da3ca3b6ab2ab5f874073f748f3204228704e0c9e396639a23e641e

SHA512
1c6b05cd13e0192e66a98f62ea47a055590a54a7f0e595bbae3be22532900f2ad233c13eaecb9057d02f5799cca31a47c2324b9267d652fbc486badb2ac4b681

Download Submit
C:\Windows\SysWOW64\uptexec-xex.dll

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

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

Filesize
73KB

MD5
0ea795898cb51dc71b7f2d7087ffcb8e

SHA1
ddcf1aa5189dfc1f659a0d66f56771c7314d210c

SHA256
6b6f5339ccb2520d65dc585c9f5775b665eb4fe926a381b08a7aa978961a83d9

SHA512
b9806f0985120a02cb115477b522b58182bc0bbd1be2c0ddbea8cbc83a4315a6e3dfa116b6e8a4c96d65c3110b0214aee2a085adafc0656a2e92f557d766ddfa

Download Submit
\Windows\SysWOW64\uxhukok.exe

Filesize
71KB

MD5
d4addafac122780501bd1ea40f931ce5

SHA1
ced4dc58f01c07aea6679500fe34f85d9b46f35c

SHA256
3b79f984f930605887a0281f5660385d96e4047af0878477fdfb06435a7f7520

SHA512
974784712f5ba69961a04382e222d6963193f1f11f95fdfd5e2e6acf556cdb5688d532e37cda99647d153a968ad66df24d0281d0c55b445b6ac034531d873513

Download Submit
memory/2100-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2580-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3048-7-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download