e2eb111cb66d5c6ecaae532a841138e60eb25ae0392464634f14ebfd2c383cbd

Analysis

max time kernel
118s
max time network
150s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 01:44

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General

Target

233824f841bf6a47547bf0d741fc458a.exe
Size

90KB
MD5

233824f841bf6a47547bf0d741fc458a
SHA1

fcbf05e0f648bd1a10e91890c3284dc653a00b13
SHA256

e2eb111cb66d5c6ecaae532a841138e60eb25ae0392464634f14ebfd2c383cbd
SHA512

074f52b361c1f6680a5a1330cc9cd191697ccdb4e30c1cffe233106eab1d108ae74afb910c347d0b91a0aa92b67b6132e9d4f3a343cd3e8138c125d1bb4f9074
SSDEEP

1536:OYl5SI4ZL+inPsQ5CZggsnbFdTILy/wSUOTIKWZg4TxSZJjx6YGroB8q:OYl5SI4ZLBaVgbnELyNIfZ2N6b0B8q

Score

10^/10

persistence

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\Userinit = "userinit.exe,rundll32.exe C:\\Windows\\system32\\winsys16_070307.dll start"	233824f841bf6a47547bf0d741fc458a.exe

Deletes itself 1 IoCs

pid	Process
2012	cmd.exe

Drops file in System32 directory 10 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\AlxRes070307.exe	233824f841bf6a47547bf0d741fc458a.exe
File opened for modification	C:\Windows\SysWOW64\scrsys070307.scr	233824f841bf6a47547bf0d741fc458a.exe
File opened for modification	C:\Windows\SysWOW64\scrsys16_070307.scr	233824f841bf6a47547bf0d741fc458a.exe
File created	C:\Windows\SysWOW64\scrsys16_070307.scr	233824f841bf6a47547bf0d741fc458a.exe
File created	C:\Windows\SysWOW64\winsys16_070307.dll	233824f841bf6a47547bf0d741fc458a.exe
File opened for modification	C:\Windows\SysWOW64\winsys16_070307.dll	233824f841bf6a47547bf0d741fc458a.exe
File created	C:\Windows\SysWOW64\AlxRes070307.exe	233824f841bf6a47547bf0d741fc458a.exe
File created	C:\Windows\SysWOW64\scrsys070307.scr	233824f841bf6a47547bf0d741fc458a.exe
File created	C:\Windows\SysWOW64\winsys32_070307.dll	233824f841bf6a47547bf0d741fc458a.exe
File opened for modification	C:\Windows\SysWOW64\winsys32_070307.dll	233824f841bf6a47547bf0d741fc458a.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\mywinsys.ini	233824f841bf6a47547bf0d741fc458a.exe

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "410299147"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\SearchScopes\DownloadRetries = "3"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\SearchScopes	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{DA745FA1-A8DB-11EE-B59C-EE5B2FF970AA} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2088	233824f841bf6a47547bf0d741fc458a.exe
2088	233824f841bf6a47547bf0d741fc458a.exe
2088	233824f841bf6a47547bf0d741fc458a.exe
2088	233824f841bf6a47547bf0d741fc458a.exe
2088	233824f841bf6a47547bf0d741fc458a.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	233824f841bf6a47547bf0d741fc458a.exe
Token: SeDebugPrivilege	2088	233824f841bf6a47547bf0d741fc458a.exe
Token: SeDebugPrivilege	2088	233824f841bf6a47547bf0d741fc458a.exe
Token: SeDebugPrivilege	2088	233824f841bf6a47547bf0d741fc458a.exe
Token: SeDebugPrivilege	2088	233824f841bf6a47547bf0d741fc458a.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2716	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2716	iexplore.exe
2716	iexplore.exe
2812	IEXPLORE.EXE
2812	IEXPLORE.EXE
2812	IEXPLORE.EXE
2812	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2716	2088	233824f841bf6a47547bf0d741fc458a.exe	28
PID 2088 wrote to memory of 2716	2088	233824f841bf6a47547bf0d741fc458a.exe	28
PID 2088 wrote to memory of 2716	2088	233824f841bf6a47547bf0d741fc458a.exe	28
PID 2088 wrote to memory of 2716	2088	233824f841bf6a47547bf0d741fc458a.exe	28
PID 2716 wrote to memory of 2812	2716	iexplore.exe	30
PID 2716 wrote to memory of 2812	2716	iexplore.exe	30
PID 2716 wrote to memory of 2812	2716	iexplore.exe	30
PID 2716 wrote to memory of 2812	2716	iexplore.exe	30
PID 2088 wrote to memory of 2716	2088	233824f841bf6a47547bf0d741fc458a.exe	28
PID 2088 wrote to memory of 2012	2088	233824f841bf6a47547bf0d741fc458a.exe	31
PID 2088 wrote to memory of 2012	2088	233824f841bf6a47547bf0d741fc458a.exe	31
PID 2088 wrote to memory of 2012	2088	233824f841bf6a47547bf0d741fc458a.exe	31
PID 2088 wrote to memory of 2012	2088	233824f841bf6a47547bf0d741fc458a.exe	31

C:\Users\Admin\AppData\Local\Temp\233824f841bf6a47547bf0d741fc458a.exe
"C:\Users\Admin\AppData\Local\Temp\233824f841bf6a47547bf0d741fc458a.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2088
- C:\program files\internet explorer\iexplore.exe
  "C:\program files\internet explorer\iexplore.exe"
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2716
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2716 CREDAT:275457 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:2812
- C:\Windows\SysWOW64\cmd.exe
  cmd /c c:\myDelm.bat
  2⤵
  - Deletes itself
  PID:2012

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

Replay Monitor

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Downloads

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

Filesize
344B

MD5
3ca2812e472d13f0794e04f598a01285

SHA1
811eb6f6a0270e6265a6efd159cb245938cb0fc1

SHA256
b7324c68e304a1ddbecdf7280798bb4b6066cadbe4893765a5d5201a372ca7bf

SHA512
90c182e205333449096936a7d8070cb8d67421056a167776948f65659f9a00a41bd723194258fe1492d96af84f92c5be2dfb2f7f0e8e7de1854c8f464dd34ad3

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

Filesize
344B

MD5
21db868edd5dc5be3ee5617c750f27c3

SHA1
52d70d4d5bc96fb367cdc220bcbb74b0165601d9

SHA256
f2312b112b2a3ca1d2900887a14cba62741aee6072bcb5799c834d4ba12b6d2b

SHA512
6700cc03599d03f9e175ff3fe9f780623c102e2250049e2544661f70b7c71c64cea0b2d3f3efe382a6776e07d40077fe83d864e89359e1fbbd5dc73e0452600c

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

Filesize
344B

MD5
8a695e84fe34f22ab7dd4e4ef81b073c

SHA1
b46cbbd0fa34224c0f3f073ddd9cf66cc87711d6

SHA256
55c3b86936949370052e6b5b9ad34cc712e39d556b0947aacbfbcab45210fc44

SHA512
5ff707c0d36501d265a48e6dba3659a45ecec6030abf189a6c2a80b91f4c6d764fe51d0d181f522cbc75704be5607bb323f225d0844059030da8ae2f9873fd77

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

Filesize
344B

MD5
39d66a83c368ada9b36afbac19bd1e98

SHA1
08c32e21b28c0f7c3037de0c68c8c9ea15c66628

SHA256
8ceb41c72ae1ca9d6c55e5a975f98ba1d61c0c14427b8f4497b5b3a8511393d6

SHA512
44cbd10eb16e7f74b1ba242983340804a607c6e490c8907d3ac638ecdfb8f2680051feda5f86f4d4346cd6c2ae4f20d807d750b424c934617e91f4041393d6a5

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

Filesize
344B

MD5
f6925faa267a2eabb153999807ed4183

SHA1
2899ff8a363f646f2d581ca81b745e59251d0e1b

SHA256
0d6a0ce16c3e8d506511bffc360cbab833fd27d5f66a924cf6ecee169226df46

SHA512
c8f704d322c2a525ee1790df3256817a45a5f4d14e401acdfc0e18d9621d2057f34a2024f9ddb65d12c3ab8497e902c27aa57fb67dfa98b6707090c8625ef436

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

Filesize
344B

MD5
954cfe22ca8ce4ec581ca76ea9c40d75

SHA1
0965be574f8dc77b76f770f127a01e59e0f6d1d6

SHA256
fde27bf6bbe02d9877c120979e47667d02d647ff506b616ee66d7f6205048e65

SHA512
0dba2f6e1da220acb8963437eeb751190730b21d1236a6bdc745427710c60cf6e60fb27f966e97310793e72902ea79a0f438d2f2a36fab95a9779758ccfc8066

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

Filesize
344B

MD5
8432e169876b2c8fd67069b096314281

SHA1
73c75bae03c84582d3b6840fa6d35159a2dca5f2

SHA256
45d408ca49da17aee6d3d9436e11619bb0f4f8f0d60220fd02f3223a202f820f

SHA512
02dfcaab9a9d974694ac7705b83c0e450a724e0700f1a2dfaeba10cdcb9008b88d9ca6ac6b0c7f9ef38bdc0b5405676db25b9f3da2864bead150f525ab25319a

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

Filesize
344B

MD5
bbf852cb851d16f7d604e824fc1ea1e3

SHA1
b0a09a816e765aeac609c6468f1f8090b44c2610

SHA256
84a2f5d798cc2c0c4ed4e9f4ad60c6e3959f1721f782801fcb4e62f528b4a10f

SHA512
936bd71a95313dc3efe004472d983505378668b2f43c1709e11e0ee5001a336054f321653aff6e5ddb608b35b53cd6f4ddbe29338b891883bdbc7e9f2a88c1ce

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

Filesize
344B

MD5
54d649046ce1337fa62d142f286b3912

SHA1
8fba76c0ec99afde5a0b880e6801ca9d34c4b5a0

SHA256
ff403078d1770070c83fc935ab81fe7373ca86edba9cc4bb83e8252c88872f18

SHA512
be510f35265360a6357da65a4ac6f88b53d890aba2cf2082a3af829b77f322bd4e14033a5b457def8bf04913500a5546b8dd4058b6ef6a2921f8f0ccbb0a44a9

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

Filesize
344B

MD5
62894ff012030c29d5b09f52bbc4b134

SHA1
fe0835554db31b7cf56c62a8635538e331d6955c

SHA256
f9ffad78e72dc704d5f2762649996b6f1b05b3f669f39b917d77517c250d3fbe

SHA512
24f3c4e31294eb9cc213d4f8e48423c695b7e7acddf7a9f71c9ac179e23da890797f2f1084dc44412e8eb11024423dc19e0444a9d00ebf7896262451bfc54e59

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

Filesize
344B

MD5
4e8da2854768060d71ea8b6b10292ba9

SHA1
0430f6c526b87bdc5fb7a22d4bc2aebb30874dda

SHA256
5302da0183ef3adfc2dbe7ff5a0e9dc08a612dcc6efece97af9bb8b015fa8172

SHA512
12426ab44409148557f9ce58d39fd7bc88a85adc32f58bd2c85b889662b8fe3bb4a2c7c7a5e9e843b789cfc99958c2e4d79474805ed271f5aa2f4c8ddd205de0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab5E39.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar61F4.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
C:\Windows\mywinsys.ini

Filesize
336B

MD5
7163770bc735df609e439f14f96c3682

SHA1
e71d793c8faa359c8ec18dca33d5dbb5d2eafa39

SHA256
da0ee050db90259788dc1950bc28bad6eed3d04d976fff338ee5410a92f1e4ef

SHA512
3ca1ab4502b30b2b065a26f8d3b8dbe3c1afba23d9454e94af59395b9fc9f02b7dab600864ac8f7070f08362cc6021d50d213975a4805eb33e981e15b2cd6766

Download Submit
C:\myDelm.bat

Filesize
184B

MD5
18b9538b8feb8da10fd4464559e19c3c

SHA1
80adfe01c77be34254c605a7f49c0a09a87e4c52

SHA256
038bf62d7cbc8645aaab8fcaa6b42aa9af9d42a300e8f36a0cd29f3105808aa3

SHA512
df4bfa77dbd07b02b369cf6ed361cf83abf39dcc5909ca63a699d85e20d5bbf4ad49472b1212a0dcc0f9cc40a45059308d60e1e38a674d3ca324f6469e116b4d

Download Submit
memory/2088-78-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2088-1-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download