aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628

General

Target
aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
Size 386KB
Sample240323-3sv9paed49
SHA256 aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628
MD5 a917728e78deb1b51b75ca17d342c215
SHA1 0c5263487d5dc66d3ba4322238bf65f70ba7a981
SHA512 71c034d7292ab293483e98667c325e0380ebc3dff65fc0a4228dfb7706f8ce06e87a1182aa92da62fecb9ac453bb7ebb8e7695d7b36ae20710cb95ce2896de05
SSDEEP 6144:ajbSAheDFnkP+6bfbSxbSxbSxbSebLLjOHubSszbSxbSRtabSxbSAheDObSxbSxc:aDp+Aeee9PXfeqEeDJeeeeeePFAv
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

adware persistence stealer upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/files/0x000b000000014502-5.dat	UPX
behavioral1/memory/2356-7-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2356-11-0x0000000000400000-0x0000000000414000-memory.dmp	UPX

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\winupdat.exe	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
File opened for modification	C:\Windows\SysWOW64\drivers\winupdat.exe	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Schedule\ImagePath = "C:\\Windows\\system32\\drivers\\winupdat.exe"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/files/0x000b000000014502-5.dat	upx
behavioral1/memory/2356-7-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2356-11-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Adds Run key to start application 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\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\winupdat.exe"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\explores.exe"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\winupdat.exe"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\explores.exe"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe

Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{18DF081C-E8AD-4283-A596-FA578C2EBDC3}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{72853161-30C5-4D22-B7F9-0BBC1D38A37E}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{B4F3A835-0E21-4959-BA22-42B3008E02FF}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects	reg.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 2996	2356	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe	29
PID 2356 wrote to memory of 2996	2356	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe	29
PID 2356 wrote to memory of 2996	2356	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe	29
PID 2356 wrote to memory of 2996	2356	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe	29

C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
"C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Sets service image path in registry
- Adds Run key to start application
- Modifies WinLogon
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  PID:2996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

Browser Extensions

Privilege Escalation

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

2

T1547.004

Defense Evasion

Modify Registry

5

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

explores.exe

Path C:\Users\Admin\AppData\Local\explores.exe
Size 387KB
SHA256 4d910b1cff6ebf6bfc57102e15c172caa3c58f6e9a101a603770feff63a48389
MD5 d3912c99d8dd92ca77f57caa0f30cf0d
SHA1 8712e7c7bccc7ed906f5b28a62238b875d1e86ec
SHA512 b51ff3223466cb20eae5ae55405fa82b5eaafe04fb997fe50bec9c9040d49bb3b1efcc4dcec66a0083ddd71ee9cbfd6f2f97e91a7526b04c46a962cdc41a6f14
SSDEEP 6144:ajbSAheDFnkP+6bfbSxbSxbSxbSebLLjOHubSszbSxbSRtabSxbSAheDObSxbSx2:aDp+Aeee9PXfeqEeDJeeeeeePFAt
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2356-0-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/2356-7-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/2356-11-0x0000000000400000-0x0000000000414000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads