d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4

Analysis

max time kernel
1s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
06-06-2024 06:56

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General

Target

d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4.exe
Size

276KB
MD5

2b9fd36ce5bc5df7ff7a597eae7acd01
SHA1

f9dc9b46a8055dcc91821dad72460dca228a9989
SHA256

d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4
SHA512

a705f59abedb1f0ee3a5935113d0735e97e38d3aa2f5f9f8187ebd7cdda0c4a597d1203f7ef980595f6ec72d490b3d24e55da17600b201f947bc5fd3fd5f0741
SSDEEP

3072:xwcPM9Vv08oewxwcP78/k9T028qqcVz5fzsTl4dsOc6v2vTzwU+Pho86meq+FaSj:HPiZ08WHPEcT93PiY+Fa7BdvG

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 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\shell = "Explorer.exe fsb.exe"	tmp240599859.exe

Executes dropped EXE 2 IoCs

pid	Process
3980	tmp240599859.exe
2812	tmp240599875.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3408-0-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/files/0x0002000000022ac5-19.dat	upx
behavioral2/memory/3408-12-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\fsb.stb	tmp240599859.exe
File created	C:\Windows\SysWOW64\fsb.tmp	tmp240599859.exe
File opened for modification	C:\Windows\SysWOW64\fsb.tmp	tmp240599859.exe

Drops file in Program Files directory 51 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\dotnet.exe	tmp240599859.exe
File created	C:\Program Files\7-Zip\7zFM.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\IntegratedOffice.exe	tmp240599859.exe
File created	C:\Program Files\Google\Chrome\Application\110.0.5481.104\Installer\chrmstp.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\OFFICE16\LICLUA.EXE-	tmp240599859.exe
File created	C:\Program Files\dotnet\dotnet.exe-	tmp240599859.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe-	tmp240599859.exe
File created	C:\Program Files\7-Zip\Uninstall.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\TabTip.exe	tmp240599859.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe	tmp240599859.exe
File created	C:\Program Files\7-Zip\7z.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe-	tmp240599859.exe
File created	C:\Program Files\7-Zip\7zFM.exe	tmp240599859.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe	tmp240599859.exe
File created	C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\OFFICE16\LICLUA.EXE	tmp240599859.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ShapeCollector.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\MavInject32.exe	tmp240599859.exe
File created	C:\Program Files\Google\Chrome\Application\110.0.5481.104\chrome_pwa_launcher.exe-	tmp240599859.exe
File created	C:\Program Files\Google\Chrome\Application\110.0.5481.104\chrome_pwa_launcher.exe	tmp240599859.exe
File created	C:\Program Files\7-Zip\7z.exe	tmp240599859.exe
File created	C:\Program Files\7-Zip\Uninstall.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\InputPersonalization.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE-	tmp240599859.exe
File created	C:\Program Files\7-Zip\7zG.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOInstaller.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeClickToRun.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\IntegratedOffice.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\MavInject32.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ShapeCollector.exe	tmp240599859.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe-	tmp240599859.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe	tmp240599859.exe
File created	C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\TabTip.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\InputPersonalization.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOInstaller.exe	tmp240599859.exe
File created	C:\Program Files\7-Zip\7zG.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\mip.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeClickToRun.exe-	tmp240599859.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\mip.exe	tmp240599859.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 3980	3408	d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4.exe	83
PID 3408 wrote to memory of 3980	3408	d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4.exe	83
PID 3408 wrote to memory of 3980	3408	d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4.exe	83
PID 3408 wrote to memory of 2812	3408	d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4.exe	84
PID 3408 wrote to memory of 2812	3408	d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4.exe	84
PID 3408 wrote to memory of 2812	3408	d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4.exe	84

C:\Users\Admin\AppData\Local\Temp\d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4.exe
"C:\Users\Admin\AppData\Local\Temp\d9e824ace2947698fb586c7348f660c986e642a05f7fbef46e9f5a8f6d663ef4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3408
- C:\Users\Admin\AppData\Local\Temp\tmp240599859.exe
  C:\Users\Admin\AppData\Local\Temp\tmp240599859.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Drops file in System32 directory
  - Drops file in Program Files directory
  PID:3980
- C:\Users\Admin\AppData\Local\Temp\tmp240599875.exe
  C:\Users\Admin\AppData\Local\Temp\tmp240599875.exe
  2⤵
  - Executes dropped EXE
  PID:2812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\7-Zip\7z.exe

Filesize
606KB

MD5
e437fcaf41acd150f913f72135acb53e

SHA1
7526b5daa35bebc04500c8d1431725ba3e7b7812

SHA256
b978bd0dbd2a26f00fbb44b7ca2834dee7129b302bbb894ead494e247326f1a8

SHA512
95874f0a78e839d69670625e314697fbdb64f0a4d6593647df728b4b96ed285f30d3f57978fac12f2c33097d1ede6fcc8b3bc4ce05a979128100606f104a02f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp240599875.exe

Filesize
213KB

MD5
20d89d1781cde87db3a8b59da816efcc

SHA1
4f6670c4dcd8d978b21d1db91e081e609f5abcd0

SHA256
4653df6eb852f717ac03d5ecdfdd5e1e2c1ac70b012049f1188e0e7d5b5f8983

SHA512
7b03a2e2c5f94a3e6164e160e3346cf0e8247471c48858dad9747dc17c8bccd20caaf2ea9f15d7e6be3e633a01536caefdeff6b384c4448c861f1e5a5ff6cf0e

Download Submit
C:\Windows\SysWOW64\fsb.tmp

Filesize
51KB

MD5
65e8d7fc3273b68dbfe23fdc81a953c2

SHA1
9d55f0c92a6cd7821e61aac5faede6a642fa30a1

SHA256
42767915cfbc0a25e6e14361f52a8c3816fa54e47480453ec72af4cd79f99329

SHA512
03b6327f4786331d4d31936741b8fb83496dc53e10018863ddb6f6cd66599137f9b6f2c89237d13151f7546d31cf652732d0781ba2ca090ce7dcd5a991b8baeb

Download Submit
memory/3408-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3408-12-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3980-2252-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3980-2006-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3980-2253-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3980-2254-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3980-2255-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3980-2257-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3980-2259-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3980-2261-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3980-2263-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3980-2264-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads