f6001c8b8d9084654ef5f429e672257b690d651f96e3c493e2f65457b8eabea1

Analysis

max time kernel
144s
max time network
139s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
04-07-2024 23:23

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General

Target

GoKuai.exe
Size

1.2MB
MD5

c88e55030beee0aab14a4ec73787ad21
SHA1

eb3c3650f241541552c0cc5eadf79cf2a30004b8
SHA256

b3e0ba133ed323debe860a1f9fb08ec2dd9828d37c797e93a8a72d21a94e8243
SHA512

1211ab51047de3add915557af3857385b4f77e4c397495a0b8d15ae7954841dc120660aa8b92a2a561c2ed88d6290560682f0f6852134b2831194cc10f1541a7
SSDEEP

24576:GSyZAjoz5Un81ECU7MtHIvTta5AZd9JIS9FSKV2P0qY18w6qcXPKXQTTG4dBWyq:pyZAkz5UneECUYtHIvTta5AwSKKV22So

Score

6^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 7 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

GoKuai.exe

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\Time = 01000000	GoKuai.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\First = 01000000	GoKuai.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\CreateDriver = 01000000	GoKuai.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\RigthMenu = 01000000	GoKuai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\GoKuai = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GoKuai.exe mini"	GoKuai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\UserName	GoKuai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\PassWord	GoKuai.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

GoKuai.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Internet Explorer\Main	GoKuai.exe

Modifies registry class 22 IoCs

Processes:

GoKuai.exe

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\Log = 00000000	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\Message = 00000000	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\AgentUseUser = 00000000	GoKuai.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\¹»¿ìÉÏ´«	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\¹»¿ìÉÏ´«\ = "¹»¿ìÎÄ¼þÉÏ´«"	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\ = "¹»¿ìÎÄ¼þÉÏ´«"	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\AgentUser	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\Scandisk = 02000000	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\¹»¿ìÉÏ´«\command\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GoKuai.exe %1 upload"	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GoKuai.exe %1 folder"	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\Agent = 00000000	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\AgentPassword	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\CurrentPath	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\¹»¿ìÉÏ´«\Icon = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GoKuai.exe"	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\Icon = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GoKuai.exe"	GoKuai.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command	GoKuai.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\AgentIP	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\AgentPort = 00000000	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\Recevies = 02000000	GoKuai.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\¹»¿ìÉÏ´«\command	GoKuai.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\¹»¿ìÉÏ´«\command\NetType = 00000000	GoKuai.exe

Modifies system certificate store 2 TTPs 5 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

Processes:

GoKuai.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	GoKuai.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 0f00000001000000140000003e8e6487f8fd27d322a269a71edaac5d57811286090000000100000034000000303206082b0601050507030106082b0601050507030206082b0601050507030406082b0601050507030306082b0601050507030853000000010000002600000030243022060c2b06010401b231010201050130123010060a2b0601040182373c0101030200c00b00000001000000180000004300b7004f00b7004d00b7004f00b7004400b7004f000000140000000100000014000000a0110a233e96f107ece2af29ef82a57fd030a4b41d00000001000000100000002e0d6875874a44c820912e85e964cfdb030000000100000014000000d1eb23a46d17d68fd92564c2f1f1601764d8e349200000000100000036040000308204323082031aa003020102020101300d06092a864886f70d0101050500307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c18414141204365727469666963617465205365727669636573301e170d3034303130313030303030305a170d3238313233313233353935395a307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c1841414120436572746966696361746520536572766963657330820122300d06092a864886f70d01010105000382010f003082010a0282010100be409df46ee1ea76871c4d45448ebe46c883069dc12afe181f8ee402faf3ab5d508a16310b9a06d0c57022cd492d5463ccb66e68460b53eacb4c24c0bc724eeaf115aef4549a120ac37ab23360e2da8955f32258f3dedccfef8386a28c944f9f68f29890468427c776bfe3cc352c8b5e07646582c048b0a891f9619f762050a891c766b5eb78620356f08a1a13ea31a31ea099fd38f6f62732586f07f56bb8fb142bafb7aaccd6635f738cda0599a838a8cb17783651ace99ef4783a8dcf0fd942e2980cab2f9f0e01deef9f9949f12ddfac744d1b98b547c5e529d1f99018c7629cbe83c7267b3e8a25c7c0dd9de6356810209d8fd8ded2c3849c0d5ee82fc90203010001a381c03081bd301d0603551d0e04160414a0110a233e96f107ece2af29ef82a57fd030a4b4300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff307b0603551d1f047430723038a036a0348632687474703a2f2f63726c2e636f6d6f646f63612e636f6d2f414141436572746966696361746553657276696365732e63726c3036a034a0328630687474703a2f2f63726c2e636f6d6f646f2e6e65742f414141436572746966696361746553657276696365732e63726c300d06092a864886f70d010105050003820101000856fc02f09be8ffa4fad67bc64480ce4fc4c5f60058cca6b6bc1449680476e8e6ee5dec020f60d68d50184f264e01e3e6b0a5eebfbc745441bffdfc12b8c74f5af48960057f60b7054af3f6f1c2bfc4b97486b62d7d6bccd2f346dd2fc6e06ac3c334032c7d96dd5ac20ea70a99c1058bab0c2ff35c3acf6c37550987de53406c58effcb6ab656e04f61bdc3ce05a15c69ed9f15948302165036cece92173ec9b03a1e037ada015188ffaba02cea72ca910132cd4e50826ab229760f8905e74d4a29a53bdf2a968e0a26ec2d76cb1a30f9ebfeb68e756f2aef2e32b383a0981b56b85d7be2ded3f1ab7b263e2f5622c82d46a004150f139839f95e93696986e	GoKuai.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	GoKuai.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

GoKuai.exe

pid	Process
1932	GoKuai.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

GoKuai.exe

pid	Process
1932	GoKuai.exe

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

GoKuai.exe

pid	Process
1932	GoKuai.exe
1932	GoKuai.exe
1932	GoKuai.exe
1932	GoKuai.exe
1932	GoKuai.exe
1932	GoKuai.exe
1932	GoKuai.exe
1932	GoKuai.exe
1932	GoKuai.exe
1932	GoKuai.exe

C:\Users\Admin\AppData\Local\Temp\GoKuai.exe
"C:\Users\Admin\AppData\Local\Temp\GoKuai.exe"
1⤵
- Adds Run key to start application
- Modifies Internet Explorer settings
- Modifies registry class
- Modifies system certificate store
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabBE90.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarBED2.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit