b8de78eb25d54d04ed2e4d7a7197a7897cdb09d6e9cf97b1057d2ee2a963da30

Analysis

max time kernel
103s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
22-07-2024 13:15

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General

Target

b5d087b9dfdca42476868714c6655430N.exe
Size

735KB
MD5

b5d087b9dfdca42476868714c6655430
SHA1

5f0e9dd41e5107d365c22a686c44e1605ee7494b
SHA256

b8de78eb25d54d04ed2e4d7a7197a7897cdb09d6e9cf97b1057d2ee2a963da30
SHA512

9925af1a5bc766b6ef4892eef92f91a7eecdf911ae599b6c9d3a03c99fa43582965592736ea69f38b5f6830a1c818c0fc0461a7d2ad6cb790a7a8813351fdb98
SSDEEP

12288:LRLkNj2yW0cccgH16oYJRt6365ya+pmrMjE5rZkXrLz2P0cwTb8dK:LR4VgDU6oYJRc65dT6YsPSMcwTb8o

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4364	netstart.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\_netstart.exe	netstart.exe
File opened for modification	C:\Windows\SysWOW64\_netstart.exe	netstart.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4364 set thread context of 4980	4364	netstart.exe	88
PID 4364 set thread context of 4700	4364	netstart.exe	89

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\Microsoft Shared\MSINFO\netstart.exe	b5d087b9dfdca42476868714c6655430N.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\MSINFO\netstart.exe	b5d087b9dfdca42476868714c6655430N.exe
File created	C:\Program Files\Common Files\Microsoft Shared\MSINFO\Delet.bat	b5d087b9dfdca42476868714c6655430N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
856	4980	WerFault.exe	88

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31120441"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "428419131"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{87D6A5DF-482C-11EF-9D1F-E662F882523E} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1551617463"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31120441"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31120441"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1550366959"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1551617463"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1550366959"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31120441"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4700	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4700	IEXPLORE.EXE
4700	IEXPLORE.EXE
4176	IEXPLORE.EXE
4176	IEXPLORE.EXE
4176	IEXPLORE.EXE
4176	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 4364	1380	b5d087b9dfdca42476868714c6655430N.exe	87
PID 1380 wrote to memory of 4364	1380	b5d087b9dfdca42476868714c6655430N.exe	87
PID 1380 wrote to memory of 4364	1380	b5d087b9dfdca42476868714c6655430N.exe	87
PID 4364 wrote to memory of 4980	4364	netstart.exe	88
PID 4364 wrote to memory of 4980	4364	netstart.exe	88
PID 4364 wrote to memory of 4980	4364	netstart.exe	88
PID 4364 wrote to memory of 4980	4364	netstart.exe	88
PID 4364 wrote to memory of 4980	4364	netstart.exe	88
PID 4364 wrote to memory of 4700	4364	netstart.exe	89
PID 4364 wrote to memory of 4700	4364	netstart.exe	89
PID 4364 wrote to memory of 4700	4364	netstart.exe	89
PID 1380 wrote to memory of 3168	1380	b5d087b9dfdca42476868714c6655430N.exe	91
PID 1380 wrote to memory of 3168	1380	b5d087b9dfdca42476868714c6655430N.exe	91
PID 1380 wrote to memory of 3168	1380	b5d087b9dfdca42476868714c6655430N.exe	91
PID 4700 wrote to memory of 4176	4700	IEXPLORE.EXE	95
PID 4700 wrote to memory of 4176	4700	IEXPLORE.EXE	95
PID 4700 wrote to memory of 4176	4700	IEXPLORE.EXE	95

C:\Users\Admin\AppData\Local\Temp\b5d087b9dfdca42476868714c6655430N.exe
"C:\Users\Admin\AppData\Local\Temp\b5d087b9dfdca42476868714c6655430N.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Program Files\Common Files\Microsoft Shared\MSINFO\netstart.exe
  "C:\Program Files\Common Files\Microsoft Shared\MSINFO\netstart.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4364
- - C:\Windows\SysWOW64\calc.exe
    "C:\Windows\system32\calc.exe"
    3⤵
    PID:4980
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4980 -s 24
      4⤵
      Program crash
      PID:856
- - C:\program files\internet explorer\IEXPLORE.EXE
    "C:\program files\internet explorer\IEXPLORE.EXE"
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4700
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4700 CREDAT:17410 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:4176
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Program Files\Common Files\Microsoft Shared\MSINFO\Delet.bat""
  2⤵
  PID:3168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4980 -ip 4980
1⤵
PID:1224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Common Files\Microsoft Shared\MSINFO\Delet.bat

Filesize
186B

MD5
53111cfdcf8007fe40565b240a849e1f

SHA1
d19097797525a77d5ee564ae4c086fd3a1e0ce38

SHA256
ae88aba150a18ee4a1336507ffc952a131dfdddef639b63fd5e166aca9dd1e8c

SHA512
4ef5e349a94b7e336c5f021ff59437c3c81bbd8c2813a553825da5ee3f6c4f9e655bd013d27aeb2649be65e2a6941dae8c315d29fdde2df26e1c57b23911ca01

Download Submit
C:\Program Files\Common Files\microsoft shared\MSInfo\netstart.exe

Filesize
735KB

MD5
b5d087b9dfdca42476868714c6655430

SHA1
5f0e9dd41e5107d365c22a686c44e1605ee7494b

SHA256
b8de78eb25d54d04ed2e4d7a7197a7897cdb09d6e9cf97b1057d2ee2a963da30

SHA512
9925af1a5bc766b6ef4892eef92f91a7eecdf911ae599b6c9d3a03c99fa43582965592736ea69f38b5f6830a1c818c0fc0461a7d2ad6cb790a7a8813351fdb98

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver1066.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5HI12B12\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
memory/1380-2-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/1380-15-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/4364-6-0x0000000002130000-0x0000000002131000-memory.dmp

Filesize
4KB

Download
memory/4364-14-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/4700-11-0x0000000000B70000-0x0000000000C2F000-memory.dmp

Filesize
764KB

Download
memory/4980-9-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download