3f5e97e6da8940ebb76abd9d9badc2d0b7e1c6f291a91a2ce2ed5b359bd0b606

Analysis

max time kernel
137s
max time network
140s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01/01/2024, 20:03

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General

Target

3dc1a166d6423dc61693c32825748ae3.dll
Size

67KB
MD5

3dc1a166d6423dc61693c32825748ae3
SHA1

79cdd79036dae370c0e98aee7abe951440b1b4c9
SHA256

3f5e97e6da8940ebb76abd9d9badc2d0b7e1c6f291a91a2ce2ed5b359bd0b606
SHA512

3ba08d98f7cf1cbb738a01b9d045211209bca7056d9e77f914da083e4219cb1ad3cbc6721eb71e48021b72a3e627a9098fcb6dad1c547d805b0b852a8de3d2aa
SSDEEP

1536:eKaouK0rof8925RMehGW4t6cHWP3BqshuqRIf/:eKaouK99MqB4tk3Tn2/

Score

5^/10

Malware Config

Signatures

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3044 set thread context of 2680	3044	rundll32.exe	29

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "410301290"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\LowRegistry	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\SearchScopes	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\SearchScopes\DownloadRetries = "2"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\PageSetup	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\InternetRegistry	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Toolbar	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\IntelliForms	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Zoom	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{D74EA421-A8E0-11EE-976F-DECE4B73D784} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2680	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2680	IEXPLORE.EXE
2680	IEXPLORE.EXE
2828	IEXPLORE.EXE
2828	IEXPLORE.EXE
2828	IEXPLORE.EXE
2828	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 3044	2856	rundll32.exe	28
PID 2856 wrote to memory of 3044	2856	rundll32.exe	28
PID 2856 wrote to memory of 3044	2856	rundll32.exe	28
PID 2856 wrote to memory of 3044	2856	rundll32.exe	28
PID 2856 wrote to memory of 3044	2856	rundll32.exe	28
PID 2856 wrote to memory of 3044	2856	rundll32.exe	28
PID 2856 wrote to memory of 3044	2856	rundll32.exe	28
PID 3044 wrote to memory of 2680	3044	rundll32.exe	29
PID 3044 wrote to memory of 2680	3044	rundll32.exe	29
PID 3044 wrote to memory of 2680	3044	rundll32.exe	29
PID 3044 wrote to memory of 2680	3044	rundll32.exe	29
PID 3044 wrote to memory of 2680	3044	rundll32.exe	29
PID 2680 wrote to memory of 2828	2680	IEXPLORE.EXE	30
PID 2680 wrote to memory of 2828	2680	IEXPLORE.EXE	30
PID 2680 wrote to memory of 2828	2680	IEXPLORE.EXE	30
PID 2680 wrote to memory of 2828	2680	IEXPLORE.EXE	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3dc1a166d6423dc61693c32825748ae3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3dc1a166d6423dc61693c32825748ae3.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:3044
- - 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:2680
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2680 CREDAT:275457 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:2828

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:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
cf742cdc211ecc9356262105885fb5ed

SHA1
dcaae67ab3b533810d5d0d94e381de4e8591adf0

SHA256
d3eae6c9d7ed39567ad399737ae9f4dca40fd5b9ceda1a039a67935d9e751921

SHA512
08705e0efe201f2cc17d2cecbec1f7957ef962156b16ef5b53eb6a59fbb8f3e8b0fbb608fa45c006f59db87462f96fd3b468bb8169068e531ef40557e136eb3b

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
4390a97ed5bde5f956df1868c00ca911

SHA1
d2995c1ff691cc5037904dc829779111a9586bb6

SHA256
dbe93c5bf33ffdd489d3ae2b42198e6a1a1297708054ba9650780518717c77df

SHA512
4b466bd389482a1c531e0a231a2a86a23fdc582cd66734e8cb765ba258498e7ef2941631a56fbf552202dd979209a313587683d389ed61b9f0439c2aa71994a7

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
6f693682bc975bdb98a897eb864649ba

SHA1
56e2c60c41eb4fc4a8dec11f4e02b26a2fc267e2

SHA256
bb17369a077922d0052b89fb59268f235daad223de9a5f4f7930e5cee0168086

SHA512
96a20f83c2569df09b6e0841389274d176ca5394bd4ebd08e68730d238d18d814efbd52c0a1476a393cf31dba883b59c0d07bdc689c1e74e492697b766089aad

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
bf8ed3fc923a22cda71f88bfa4172332

SHA1
daebc48e8d0ff62ea7466136533da632743b022a

SHA256
315b818bd917c122c8a02b3d63a630426a59e7d5856d535d592b38fbb11107ee

SHA512
4a741f7d86a1f56e4f79983c1e9eb74d7154437ba8e901b15b969cb1c57dbb36bbc717103014294c6278c999f0f2d6970bf1b48bf8a061b62d821bda7dae91f7

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
d9748b384111a7238b0b462d383409c2

SHA1
327769998472a9f63eab85553417477702cfcf8d

SHA256
1f8ec98fa594acc5edfbb4d094eb787b94daf647cf9359b49bd88a663a22515a

SHA512
314df98d21be8d16ec232a00e7e6cdee1bcc7ff53a5848d711fcbc774dffacd1634376d7a80d11714b4617823bd5100129976ac7255b72ff31343a28bb006e20

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
694e2ff33239e95345a6fadea7a6eae5

SHA1
484fe86ed76471b550c4d3aa61439988b2903e55

SHA256
534bec1c503ac2966b1d253bfee7f131fded6bee2ef7610f085920798612914e

SHA512
128eb450d08fb187527ffea87967843f038e49e7c8656fde21f3d6e3cbe01d4efd83194cb83456a1ba0b938789bb3b8abc59b497afbc1b680e14e3b49a896db3

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
cfac7b1394c2cdd24723e5a024bf5179

SHA1
8abd8c5ad1691805a4cb0a8b5cec8405887e9823

SHA256
77d177fc9e3a668fe59936c3451c93ea7375a2eb13084403d8c6eb15224d9f37

SHA512
87661acabb26b3b0d3c66c2fb453580cf6b461542bb6ea20fc1ca6ef37e4a3e7578fac643cfc8e2fd771dc4ccbd0177646eb03348ba9947ca2da619997ead6ad

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
7c8cf96ff1a38d1b4354b02e6edbe963

SHA1
daa4b088291ce9b86156b656e4811156a1aa8aa4

SHA256
13e1ce5fa1179ee9d228a7844f1174f6a621d74e284603e2df478faadd087433

SHA512
72007387c3dc4eb91aab9f47285392ba242a8d7cf6b539909c9d525a9dfe338f2f315b4b762f7a3cc94e1a3a7b8d1c650b9a8e0023340bb77c6ee46c1eaac536

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
1b4d745210cbc7d18a7cb34144f2bdd1

SHA1
7f355909c53b1a3c631a9a7d15264d8ec97458fe

SHA256
2190d378a150dd583a6c75ca8bf42e4b9663bf14fe7830cde15f8489a8133f5e

SHA512
5d1f231040eb2a3fc5e0a0c566fbfb84dce85d0a269b00e167b68c13bd376adb1ba6b008aaf85407b00e8bbea36ffa4872c1cf718ebc05d0beb873caf72dca7a

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
7589a818cd36a830d97de85227b15b95

SHA1
8f6ff251138d2d24e051bb231678f1faa9fe662c

SHA256
9f1b009d3a11019d0c6ca017477e104cf1564a61f44720ad9e24b17703e026a6

SHA512
84f9cb64c1a40eb2f69cde59248a53c7d60fc3b76de5d6fabf3eea1a794f2c4e916c5afcdf6152ca12b99385bc8189f4a8c0e39aee408e621d173a9d7b9aadb8

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
ceae6825b7f620ff8d59933563c847da

SHA1
0f85c6397dec47394fb0d0fd868d42d870b6a6a2

SHA256
2bccb32b97bf108781032d57cfe9af14604e2112cc4bc5d54f365bf1e105d88d

SHA512
63d7a9fc38931a245bb71a60f58db75bfb2c0f512fcfb8af3aa19be451f4c2de62d99f258fb94ee1a3fefbef2986549198d3318f788e862f4b9583437034077d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab4627.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar4669.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit