hxxps://github[.]com/NETFrameWorkv4/v4[.]8/blob/main/NETFramework48[.]zip

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2023, 14:28

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General

Target

https://github.com/NETFrameWorkv4/v4.8/blob/main/NETFramework48.zip

Score

6^/10

Malware Config

Signatures

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2480	1420	WerFault.exe	91
224	4204	WerFault.exe	97

Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\PhishingFilter	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = 575ec7859e45d901	iexplore.exe

Modifies Internet Explorer settings 1 TTPs 41 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\RepId	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000003a05e1fb19132479fd55c1535a2bc7b000000000200000000001066000000010000200000008f4451a1eb9852a66995cacf026c7e9a68e28c27a42001dfb4f03fd573c0b0d2000000000e8000000002000020000000c49b0a94900dae373918fdbce0728d949680c35685e568c1ba037dff86fe53a8200000009fe468273f534619125acf4309625a1ab1e3c0230a466ceddb932fda49dd3b2c400000002f29e309c40a29371a27f39580f67162da40203ae43882e7fdbe0383104106a93a48eec39cd8e7543d05d36d43a47344bb4d62daf9d0ddf1b9a2c368b8d10cdb	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31034972"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31034972"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{1484AE6C-FA50-11ED-B7D7-FA48AF8140A7} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\RepId\PublicId = "{BC24CC99-791A-46BB-8E15-C8D9E1DB63F4}"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000003a05e1fb19132479fd55c1535a2bc7b000000000200000000001066000000010000200000003b8c4ce9874c8a7eb0be5729c3ff1d3ba4073169ff2761f5ef2a6cd57a32f332000000000e800000000200002000000063d2c4d039f165c837a45ecb561e3e92bd4d3d94c162c1a4358f3fdc476e07642000000095b3455993487daaf08b40eedb9c7a48a787277785dfaa189716310a6f0833454000000085cdc7a93750d401061f9be265686c0fb1221771b17e78002d17223bdacc908d9e102d10ed4d03996c1058ac6603618feecd7087069f717e0aa130b084002c17	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3914642853"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31034972"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = e058d8eb5c8ed901	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3914642853"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3926673537"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "391710712"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 1046c5eb5c8ed901	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\Local Settings	iexplore.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1340	iexplore.exe
1340	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1340	iexplore.exe
1340	iexplore.exe
4112	IEXPLORE.EXE
4112	IEXPLORE.EXE
4112	IEXPLORE.EXE
4112	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 4112	1340	iexplore.exe	81
PID 1340 wrote to memory of 4112	1340	iexplore.exe	81
PID 1340 wrote to memory of 4112	1340	iexplore.exe	81

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://github.com/NETFrameWorkv4/v4.8/blob/main/NETFramework48.zip
1⤵
- Modifies Internet Explorer Phishing Filter
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1340 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:4112

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2120

C:\Users\Admin\AppData\Local\Temp\Temp1_NETFramework48.zip\NETFramework48\install.exe
"C:\Users\Admin\AppData\Local\Temp\Temp1_NETFramework48.zip\NETFramework48\install.exe"
1⤵
PID:1420
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1420 -s 492
  2⤵
  - Program crash
  PID:2480

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 416 -p 1420 -ip 1420
1⤵
PID:2688

C:\Users\Admin\AppData\Local\Temp\Temp1_NETFramework48.zip\NETFramework48\install.exe
"C:\Users\Admin\AppData\Local\Temp\Temp1_NETFramework48.zip\NETFramework48\install.exe"
1⤵
PID:4204
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 4204 -s 488
  2⤵
  - Program crash
  PID:224

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 520 -p 4204 -ip 4204
1⤵
PID:312

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
3fbb8ee33354096d9f116c557a402d14

SHA1
f75756c42d45d1047eb04fa54bd7702f5560df4b

SHA256
13e2696561dd0955e1d61f7e18166c8bd7a02faf1dbfe04e738b5d68cc2ca57e

SHA512
cc21e56f9278282b3c15964b5618d42bdfda83b245d7bf01d12550aabd69a9747d1deaa5a9a9830e6d6a47465f580e21e0a7621cf992b56244ad4bee8779c338

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
434B

MD5
74873250950ba8f186395646b87c4a1d

SHA1
5d3e571ed9111b7061e8db62d4bd20456730932f

SHA256
f12c430888e9e57b3e069586be63f9152765f63a3d3936716d2b0c3a5f5f131a

SHA512
e041a27a6aa3c17bf01914ca6bee13076d565e3763d941a2de8a5c0e25cb12380ae4a9d6666f84e098cecebdb1cd0619e30bec31dc9ad00d3f6d6cbb4c4e8f67

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\9afmek3\imagestore.dat

Filesize
1KB

MD5
e0d31bc9f31a5958e683f27eba8630f5

SHA1
e566f6a01c313053a56d83cf1b4b6bf2f0a7bc83

SHA256
a68d0cd6fe37c43389b322a5e5a15c4f2036d78e26481ad457dd2b756bfee09d

SHA512
3d38c11c54f326ed02cd5771a0f8034455666746bd47191b1b54379924e8902e1170f2920a39940d1ee70cf666e3e647ccaa2de2fedf28e669c13c6deb79448e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DKFP9JBL\NETFramework48[1].zip

Filesize
158KB

MD5
1f3b3644d836b79fe2b91f4b39e1eac8

SHA1
0806bbbd393803b46bf1d44b5d60c4ea643ae23b

SHA256
3f6c52d592eb9e4ec390a73279fec16b5e0fa1b11540b120ec21d82f717bfd56

SHA512
6e669930d4a964288514f192b15bcd9bf97e72cfd30ea86e8ea3f32b2b2969d41da08326915270fe8bf7e4ab2445ba2df20ee766cb766db08abc219d5f3c86da

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DKFP9JBL\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G1ORIWBN\NETFramework48.zip.ucsdc4c.partial

Filesize
158KB

MD5
1f3b3644d836b79fe2b91f4b39e1eac8

SHA1
0806bbbd393803b46bf1d44b5d60c4ea643ae23b

SHA256
3f6c52d592eb9e4ec390a73279fec16b5e0fa1b11540b120ec21d82f717bfd56

SHA512
6e669930d4a964288514f192b15bcd9bf97e72cfd30ea86e8ea3f32b2b2969d41da08326915270fe8bf7e4ab2445ba2df20ee766cb766db08abc219d5f3c86da

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G1ORIWBN\favicon[1].png

Filesize
958B

MD5
346e09471362f2907510a31812129cd2

SHA1
323b99430dd424604ae57a19a91f25376e209759

SHA256
74cf90ac2fe6624ab1056cacea11cf7ed4f8bef54bbb0e869638013bba45bc08

SHA512
a62b0fcc02e671d6037725cf67935f8ca1c875f764ce39fed267420935c0b7bad69ab50d3f9f8c628e9b3cff439885ee416989e31ceaa5d32ae596dd7e5fedbd

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads