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
behavioral2/memory/224-0-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/files/0x0007000000023262-5.dat	UPX
behavioral2/memory/224-7-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/224-9-0x0000000000400000-0x0000000000414000-memory.dmp	UPX

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\drivers\winupdat.exe	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
File created	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
behavioral2/memory/224-0-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/files/0x0007000000023262-5.dat	upx
behavioral2/memory/224-7-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/224-9-0x0000000000400000-0x0000000000414000-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\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\winupdat.exe"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\explores.exe"	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
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

Installs/modifies Browser Helper Object 2 TTPs 3 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\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	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 3 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 708	224	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe	99
PID 224 wrote to memory of 708	224	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe	99
PID 224 wrote to memory of 708	224	aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe	99

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:224
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  PID:708

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3700 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:3424

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 414KB
SHA256 b01894596797f56d13927e23cbbb8418db7708d2b0119dd541762e5c00e679a6
MD5 2186f4572063933791bde070ea83820c
SHA1 76f9ae518d7a6aa8c55730a95bfca82abe627e6f
SHA512 0f8ab96e4bd4a1b21f7f6a33e43756aaae231c669186b7195064fcd1c3585830549b5280663fa8a4d7f9ae8e99ff3860e1b6349a0783fdc6fe645cdd7b165bf3
SSDEEP 6144:ajbSAheDFnkP+6bfbSxbSxbSxbSebLLjOHubSszbSxbSRtabSxbSAheDObSxbSxh:aDp+Aeee9PXfeqEeDJeeeeeePFANxK
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/224-0-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/224-7-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/224-9-0x0000000000400000-0x0000000000414000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads