Analysis
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max time kernel
134s -
max time network
137s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
26-10-2024 20:37
Behavioral task
behavioral1
Sample
main.exe
Resource
win7-20241023-en
windows7-x64
0 signatures
150 seconds
Behavioral task
behavioral2
Sample
main.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
main.exe
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Size
14.2MB
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MD5
32555cfe5d6baeaf6a7fe7bb7fb65b2c
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SHA1
d96b09517a45fdbcb852751dadbf6f8ba880c809
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SHA256
7514379d03a14596ecf9e1a378d844d90314561d660e0c3947131e279fa27f73
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SHA512
53ff705e8180255fed91da6d1e671b4cdd5d9bb837679748d54acb7da75a8419684d9795e69fa259b6b89e9f09678dde8d941de74e7d3034e43a593a11ad7f1e
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SSDEEP
196608:JMhP4WgzpUmKAUIo4z3wVSIPLFFrL0AGtWT6U:JyP2Zo40HLvL7Gty
Score
10/10
Malware Config
Extracted
Family
skuld
C2
https://discord.com/api/webhooks/1253745341237301298/0bupEAbWw7WhJJNHQZuklnmeXgWr4vsCHwsXRKwqRFI02WfhfcKZFllI_i5uOwkWj_II
Signatures
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Skuld family
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe" main.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 3 api.ipify.org 4 api.ipify.org 9 ip-api.com -
GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
description flow ioc HTTP User-Agent header 10 Go-http-client/1.1 -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C main.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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 main.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 5c000000010000000400000000080000190000000100000010000000a823b4a20180beb460cab955c24d7e21030000000100000014000000b1bc968bd4f49d622aa89a81f2150152a41d829c7e00000001000000080000000000042beb77d5017a000000010000000c000000300a06082b060105050703097f000000010000000c000000300a06082b060105050703091d00000001000000100000006ee7f3b060d10e90a31ba3471b999236140000000100000014000000607b661a450d97ca89502f7d04cd34a8fffcfd4b620000000100000020000000ebd41040e4bb3ec742c9e381d31ef2a41a48b6685c96e7cef3c1df6cd4331c990b000000010000003000000047006c006f00620061006c005300690067006e00200052006f006f00740020004300410020002d002000520031000000530000000100000040000000303e301f06092b06010401a032010130123010060a2b0601040182373c0101030200c0301b060567810c010330123010060a2b0601040182373c0101030200c0090000000100000068000000306606082b0601050507030206082b06010505070303060a2b0601040182370a030406082b0601050507030406082b0601050508020206082b0601050507030606082b0601050507030706082b0601050507030906082b0601050507030106082b060105050703080f00000001000000140000005a6d07b6371d966a2fb6ba92828ce5512a49513d0400000001000000100000003e455215095192e1b75d379fb187298a200000000100000079030000308203753082025da003020102020b040000000001154b5ac394300d06092a864886f70d01010505003057310b300906035504061302424531193017060355040a1310476c6f62616c5369676e206e762d73613110300e060355040b1307526f6f74204341311b301906035504031312476c6f62616c5369676e20526f6f74204341301e170d3938303930313132303030305a170d3238303132383132303030305a3057310b300906035504061302424531193017060355040a1310476c6f62616c5369676e206e762d73613110300e060355040b1307526f6f74204341311b301906035504031312476c6f62616c5369676e20526f6f7420434130820122300d06092a864886f70d01010105000382010f003082010a0282010100da0ee6998dcea3e34f8a7efbf18b83256bea481ff12ab0b9951104bdf063d1e26766cf1cddcf1b482bee8d898e9aaf298065abe9c72d12cbab1c4c7007a13d0a30cd158d4ff8ddd48c50151cef50eec42ef7fce952f2917de06dd535308e5e4373f241e9d56ae3b2893a5639386f063c88695b2a4dc5a754b86c89cc9bf93ccae5fd89f5123c927896d6dc746e934461d18dc746b2750e86e8198ad56d6cd5781695a2e9c80a38ebf224134f73549313853a1bbc1e34b58b058cb9778bb1db1f2091ab09536e90ce7b3774b97047912251631679aeb1ae412608c8192bd146aa48d6642ad78334ff2c2ac16c19434a0785e7d37cf62168efeaf2529f7f9390cf0203010001a3423040300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff301d0603551d0e04160414607b661a450d97ca89502f7d04cd34a8fffcfd4b300d06092a864886f70d01010505000382010100d673e77c4f76d08dbfecbaa2be34c52832b57cfc6c9c2c2bbd099e53bf6b5eaa1148b6e508a3b3ca3d614dd34609b33ec3a0e363551bf2baefad39e143b938a3e62f8a263befa05056f9c60afd38cdc40b705194979804dfc35f94d515c914419cc45d7564150dff5530ec868fff0def2cb96346f6aafcdfbc69fd2e1248649ae095f0a6ef298f01b115b50c1da5fe692c6924781eb3a71c7162eecac897ac175d8ac2f847866e2ac4563195d06789852bf96ca65d469d0caa82e49951dd70b7db563d61e46ae15cd6f6fe3dde41cc07ae6352bf5353f42be9c7fdb6f7825f85d24118db81b3041cc51fa4806f1520c9de0c880a1dd66655e2fc48c9292669e0 main.exe -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 4264 main.exe Token: SeIncreaseQuotaPrivilege 4180 wmic.exe Token: SeSecurityPrivilege 4180 wmic.exe Token: SeTakeOwnershipPrivilege 4180 wmic.exe Token: SeLoadDriverPrivilege 4180 wmic.exe Token: SeSystemProfilePrivilege 4180 wmic.exe Token: SeSystemtimePrivilege 4180 wmic.exe Token: SeProfSingleProcessPrivilege 4180 wmic.exe Token: SeIncBasePriorityPrivilege 4180 wmic.exe Token: SeCreatePagefilePrivilege 4180 wmic.exe Token: SeBackupPrivilege 4180 wmic.exe Token: SeRestorePrivilege 4180 wmic.exe Token: SeShutdownPrivilege 4180 wmic.exe Token: SeDebugPrivilege 4180 wmic.exe Token: SeSystemEnvironmentPrivilege 4180 wmic.exe Token: SeRemoteShutdownPrivilege 4180 wmic.exe Token: SeUndockPrivilege 4180 wmic.exe Token: SeManageVolumePrivilege 4180 wmic.exe Token: 33 4180 wmic.exe Token: 34 4180 wmic.exe Token: 35 4180 wmic.exe Token: 36 4180 wmic.exe Token: SeIncreaseQuotaPrivilege 4180 wmic.exe Token: SeSecurityPrivilege 4180 wmic.exe Token: SeTakeOwnershipPrivilege 4180 wmic.exe Token: SeLoadDriverPrivilege 4180 wmic.exe Token: SeSystemProfilePrivilege 4180 wmic.exe Token: SeSystemtimePrivilege 4180 wmic.exe Token: SeProfSingleProcessPrivilege 4180 wmic.exe Token: SeIncBasePriorityPrivilege 4180 wmic.exe Token: SeCreatePagefilePrivilege 4180 wmic.exe Token: SeBackupPrivilege 4180 wmic.exe Token: SeRestorePrivilege 4180 wmic.exe Token: SeShutdownPrivilege 4180 wmic.exe Token: SeDebugPrivilege 4180 wmic.exe Token: SeSystemEnvironmentPrivilege 4180 wmic.exe Token: SeRemoteShutdownPrivilege 4180 wmic.exe Token: SeUndockPrivilege 4180 wmic.exe Token: SeManageVolumePrivilege 4180 wmic.exe Token: 33 4180 wmic.exe Token: 34 4180 wmic.exe Token: 35 4180 wmic.exe Token: 36 4180 wmic.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4264 wrote to memory of 1312 4264 main.exe 87 PID 4264 wrote to memory of 1312 4264 main.exe 87 PID 4264 wrote to memory of 2468 4264 main.exe 88 PID 4264 wrote to memory of 2468 4264 main.exe 88 PID 4264 wrote to memory of 4180 4264 main.exe 89 PID 4264 wrote to memory of 4180 4264 main.exe 89 -
Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 1312 attrib.exe 2468 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\main.exe"C:\Users\Admin\AppData\Local\Temp\main.exe"1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4264 -
C:\Windows\system32\attrib.exeattrib +h +s C:\Users\Admin\AppData\Local\Temp\main.exe2⤵
- Views/modifies file attributes
PID:1312
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C:\Windows\system32\attrib.exeattrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe2⤵
- Views/modifies file attributes
PID:2468
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C:\Windows\System32\Wbem\wmic.exewmic csproduct get UUID2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4180
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
14.2MB
MD532555cfe5d6baeaf6a7fe7bb7fb65b2c
SHA1d96b09517a45fdbcb852751dadbf6f8ba880c809
SHA2567514379d03a14596ecf9e1a378d844d90314561d660e0c3947131e279fa27f73
SHA51253ff705e8180255fed91da6d1e671b4cdd5d9bb837679748d54acb7da75a8419684d9795e69fa259b6b89e9f09678dde8d941de74e7d3034e43a593a11ad7f1e