joker | 65e48138eeec15a0fad5c341f62ecc31552c01db04db0fd2e8c39ac3e45fcff7

Analysis

max time kernel
153s
max time network
175s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04-10-2022 19:25

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General

Target

f075c52ce064768d7567c841f269712b.exe
Size

137KB
MD5

f075c52ce064768d7567c841f269712b
SHA1

993d250b26e4660b93ba8e29af6cc9a46420e772
SHA256

65e48138eeec15a0fad5c341f62ecc31552c01db04db0fd2e8c39ac3e45fcff7
SHA512

59813726e98b1d889759e28391b9d82a596a9a37ba98f5e2fd9ddce7dcf15ed8d8a72037d01531a26d496fa891b0f67b3d0880f6fec09aa8f0c74488a45bda22
SSDEEP

3072:71i/NU8bOMYcYYcmy5d048g3nan3vx9kGSYng7+s5YmMOMYcYY51i/NU81:Zi/NjO5x0Xg+UGSYnuy3Oai/Nd

Score

10^/10

joker infostealer persistence trojan

Malware Config

Signatures

joker
Joker is an Android malware that targets billing and SMS fraud.
infostealer trojan joker

Executes dropped EXE 1 IoCs

pid	Process
5064	sys.exe

Modifies Installed Components in the registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{A0XC6A98-A14C-J35H-46UD-F5AR862J2AH5}	sys.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A0XC6A98-A14C-J35H-46UD-F5AR862J2AH5}\StubPath = "file:\\\\C:\\sys.exe"	sys.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	f075c52ce064768d7567c841f269712b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	sys.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\SysWOW64\ie.bat	sys.exe
File created	C:\WINDOWS\SysWOW64\qx.bat	sys.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\WINDOWS\sys.exe	sys.exe
File opened for modification	C:\WINDOWS\sys.exe	sys.exe
File opened for modification	C:\WINDOWS\sys.exe	attrib.exe
File created	C:\WINDOWS\sys.exe	f075c52ce064768d7567c841f269712b.exe
File opened for modification	C:\WINDOWS\sys.exe	f075c52ce064768d7567c841f269712b.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Kills process with taskkill 2 IoCs

evasion

pid	Process
2616	taskkill.exe
3124	taskkill.exe

Modifies Internet Explorer settings 1 TTPs 62 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.ymtuku.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30988344"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\154.203.154.173\Total = "63"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1530761948"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000975fab978604b14697eb522259e91a10000000000200000000001066000000010000200000002ba45dcfcd132a2344d831662757dcf730f1922ca5edccad57bd698d688b1d58000000000e80000000020000200000001e1e1d6e7c3de40296dcd089d8dea6fa92d088f1b14939ac5075098f47c38ac620000000e1a7e4247ffa89fabd21841659a0bef9679483f1dda26fd7dce5ce86dfa5c621400000000079b3ea5a05c19f102cfc9390002d197eb4cc50569b70aeb626716442ff0a86c7697cc63a507e9f555e1c0b3ebb2f971bdc892944338cda54f5ffd469d4fc89	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\International\CpMRU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\Factor = "20"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\154.203.154.173	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 00a9f67438d8d801	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{7E9D2CE9-442B-11ED-89AC-C2DBB15B3A76} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30988344"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\154.203.154.173\NumberOfSubdomains = "1"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a000e57538d8d801	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	sys.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\154.203.154.173\ = "63"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\ymtuku.com\NumberOfSubdomains = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DOMStorage\154.203.154.173	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371683909"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\Size = "10"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1526230517"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000975fab978604b14697eb522259e91a100000000002000000000010660000000100002000000053e41cef05b79cc8de918b15f8d27e95ea68f59dcd2bbece05e5f8500ce3dc1b000000000e8000000002000020000000db186f3a064b6a70ede0656051d5f201f0a8bf0c9fa894b0a329ad6b8a275e1e2000000092852d3a302f4464305df88d794943fc67cbde0983bf3f8b1eb20385777ace0640000000bb2d7c71e161008a59d39d9cdfff5cbb675cbcdaaee527908283e2045774c1687302322071c8ecfd1b2001a6289f519936d9676c89836ac873c78b1edbf29dd8	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\InitHits = "100"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1526230517"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\Total\ = "63"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\www.ymtuku.com\ = "63"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30988344"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30988344"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1530761948"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\Total\ = "126"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\Enable = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DOMStorage\ymtuku.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\ymtuku.com\Total = "63"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe

Modifies Internet Explorer start page 1 TTPs 1 IoCs

stealer

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Start Page = "http://dhku.com"	sys.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5064	sys.exe
5064	sys.exe
5064	sys.exe
5064	sys.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2616	taskkill.exe
Token: SeDebugPrivilege	3124	taskkill.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4248	iexplore.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
4916	f075c52ce064768d7567c841f269712b.exe
5064	sys.exe
4248	iexplore.exe
4248	iexplore.exe
2668	IEXPLORE.EXE
2668	IEXPLORE.EXE
2668	IEXPLORE.EXE
2668	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 59 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 2616	4916	f075c52ce064768d7567c841f269712b.exe	84
PID 4916 wrote to memory of 2616	4916	f075c52ce064768d7567c841f269712b.exe	84
PID 4916 wrote to memory of 2616	4916	f075c52ce064768d7567c841f269712b.exe	84
PID 4916 wrote to memory of 5064	4916	f075c52ce064768d7567c841f269712b.exe	86
PID 4916 wrote to memory of 5064	4916	f075c52ce064768d7567c841f269712b.exe	86
PID 4916 wrote to memory of 5064	4916	f075c52ce064768d7567c841f269712b.exe	86
PID 5064 wrote to memory of 3124	5064	sys.exe	87
PID 5064 wrote to memory of 3124	5064	sys.exe	87
PID 5064 wrote to memory of 3124	5064	sys.exe	87
PID 4916 wrote to memory of 1584	4916	f075c52ce064768d7567c841f269712b.exe	89
PID 4916 wrote to memory of 1584	4916	f075c52ce064768d7567c841f269712b.exe	89
PID 4916 wrote to memory of 1584	4916	f075c52ce064768d7567c841f269712b.exe	89
PID 5064 wrote to memory of 4248	5064	sys.exe	91
PID 5064 wrote to memory of 4248	5064	sys.exe	91
PID 5064 wrote to memory of 3008	5064	sys.exe	93
PID 5064 wrote to memory of 3008	5064	sys.exe	93
PID 5064 wrote to memory of 3008	5064	sys.exe	93
PID 4248 wrote to memory of 2668	4248	iexplore.exe	95
PID 4248 wrote to memory of 2668	4248	iexplore.exe	95
PID 4248 wrote to memory of 2668	4248	iexplore.exe	95
PID 3008 wrote to memory of 2356	3008	cmd.exe	96
PID 3008 wrote to memory of 2356	3008	cmd.exe	96
PID 3008 wrote to memory of 2356	3008	cmd.exe	96
PID 5064 wrote to memory of 4372	5064	sys.exe	97
PID 5064 wrote to memory of 4372	5064	sys.exe	97
PID 5064 wrote to memory of 4372	5064	sys.exe	97
PID 4372 wrote to memory of 2112	4372	cmd.exe	99
PID 4372 wrote to memory of 2112	4372	cmd.exe	99
PID 4372 wrote to memory of 2112	4372	cmd.exe	99
PID 5064 wrote to memory of 4384	5064	sys.exe	100
PID 5064 wrote to memory of 4384	5064	sys.exe	100
PID 5064 wrote to memory of 4384	5064	sys.exe	100
PID 4384 wrote to memory of 4896	4384	cmd.exe	102
PID 4384 wrote to memory of 4896	4384	cmd.exe	102
PID 4384 wrote to memory of 4896	4384	cmd.exe	102
PID 5064 wrote to memory of 800	5064	sys.exe	103
PID 5064 wrote to memory of 800	5064	sys.exe	103
PID 5064 wrote to memory of 800	5064	sys.exe	103
PID 800 wrote to memory of 812	800	cmd.exe	105
PID 800 wrote to memory of 812	800	cmd.exe	105
PID 800 wrote to memory of 812	800	cmd.exe	105
PID 5064 wrote to memory of 2304	5064	sys.exe	106
PID 5064 wrote to memory of 2304	5064	sys.exe	106
PID 5064 wrote to memory of 2304	5064	sys.exe	106
PID 2304 wrote to memory of 1296	2304	cmd.exe	108
PID 2304 wrote to memory of 1296	2304	cmd.exe	108
PID 2304 wrote to memory of 1296	2304	cmd.exe	108
PID 5064 wrote to memory of 1832	5064	sys.exe	109
PID 5064 wrote to memory of 1832	5064	sys.exe	109
PID 5064 wrote to memory of 1832	5064	sys.exe	109
PID 1832 wrote to memory of 1172	1832	cmd.exe	111
PID 1832 wrote to memory of 1172	1832	cmd.exe	111
PID 1832 wrote to memory of 1172	1832	cmd.exe	111
PID 5064 wrote to memory of 3724	5064	sys.exe	112
PID 5064 wrote to memory of 3724	5064	sys.exe	112
PID 5064 wrote to memory of 3724	5064	sys.exe	112
PID 3724 wrote to memory of 2672	3724	cmd.exe	114
PID 3724 wrote to memory of 2672	3724	cmd.exe	114
PID 3724 wrote to memory of 2672	3724	cmd.exe	114

Views/modifies file attributes 1 TTPs 7 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2356	attrib.exe
2112	attrib.exe
4896	attrib.exe
812	attrib.exe
1296	attrib.exe
1172	attrib.exe
2672	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f075c52ce064768d7567c841f269712b.exe
"C:\Users\Admin\AppData\Local\Temp\f075c52ce064768d7567c841f269712b.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\SysWOW64\taskkill.exe
  taskkill.exe /im KSafeTray.exe /f
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:2616
- C:\WINDOWS\sys.exe
  "C:\WINDOWS\sys.exe"
  2⤵
  - Executes dropped EXE
  - Modifies Installed Components in the registry
  - Checks computer location settings
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Modifies Internet Explorer settings
  - Modifies Internet Explorer start page
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5064
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill.exe /im KSafeTray.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3124
- - C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" http://www.ymtuku.com/xg/?tan
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4248
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4248 CREDAT:17410 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:2668
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\All Users\桌面\Internet Explorer.lnk"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3008
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +h "C:\Documents and Settings\All Users\桌面\Internet Explorer.lnk"
      4⤵
      Views/modifies file attributes
      PID:2356
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\Admin\桌面\Internet Explorer.lnk"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4372
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +h "C:\Documents and Settings\Admin\桌面\Internet Explorer.lnk"
      4⤵
      Views/modifies file attributes
      PID:2112
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\Admin\Application Data\Microsoft\Internet Explorer\Quick Launch\启动 Internet Explorer 浏览器.lnk"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4384
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +h "C:\Documents and Settings\Admin\Application Data\Microsoft\Internet Explorer\Quick Launch\启动 Internet Explorer 浏览器.lnk"
      4⤵
      Views/modifies file attributes
      PID:4896
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\Admin\Application Data\Microsoft\Internet Explorer\Quick Launch\Internet Explorer.lnk"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:800
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +h "C:\Documents and Settings\Admin\Application Data\Microsoft\Internet Explorer\Quick Launch\Internet Explorer.lnk"
      4⤵
      Views/modifies file attributes
      PID:812
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\Admin\「开始」菜单\程序\Internet Explorer.lnk"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2304
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +h "C:\Documents and Settings\Admin\「开始」菜单\程序\Internet Explorer.lnk"
      4⤵
      Views/modifies file attributes
      PID:1296
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c attrib +h "C:\WINDOWS\sys.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1832
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +h "C:\WINDOWS\sys.exe"
      4⤵
      Drops file in Windows directory
      Views/modifies file attributes
      PID:1172
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c attrib +h "c:\sys.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3724
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +h "c:\sys.exe"
      4⤵
      Views/modifies file attributes
      PID:2672
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del f075c52ce064768d7567c841f269712b.exe
  2⤵
  PID:1584

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
471B

MD5
afc3e2584b32e1e7c23c33e9534089a5

SHA1
ea4e2266d010c300621d2287ea60fe3e9a9ee753

SHA256
61597f5f937da250a5ed7b4b82867bebc546a5a35c0029982a003b1e9cbd2e7e

SHA512
f0e0d20b15bc390292baf0d93d982315afc466ccd2d4e48152ed65af97aed573d5b9e65b2b50925cbcd2e736955dfec4f63de5739cdb1499eb2db5dfc3cc4fe6

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

Filesize
404B

MD5
bb5a25cb916ad62988c4207a6f33a634

SHA1
46b07f788f8a8273c6408c0f56a3b5418f526bbe

SHA256
1335cd4088e02c72cb396a09276646b8533c7d5ddc149ab38a4262c224fdd813

SHA512
34c13f5f7a3485e9ff1da5f9257a5048902f951c6d5ef026d14c4ab29210102c5555fcf278b655f56c0b69617508baf9f6dbe4a96769b11b0eb5ec947d965e73

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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\ru1r3yf\imagestore.dat

Filesize
1KB

MD5
a1abc08f52c5200c907044cb4febbe27

SHA1
d79f14309a5125fba7cb7ccbf2ee6970f91d8d1f

SHA256
c354e66db2476705d14eab3636a7b215ad6492c0b8ac9f6976165950c890515c

SHA512
ab228e84edd22a23037540db8fb713f643c256a337f7de32ec20b2c5de2cc51d08e1df6ef4fee5a5bf51061c8b9dcb4935c53ca90408f890d9d5c851a4e5e34a

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C:\WINDOWS\sys.exe

Filesize
137KB

MD5
8522992a01052983a769ba0b10ca9f57

SHA1
4d5205b76b885f9c430c64238d6247dd163cbb35

SHA256
034e40b6fe0f3fecbedc27b056247df41568244782f7cabe405104d7eca4cf0e

SHA512
20c91beff9f4d963637374bfc8ba6f8dffb66b6e6e35f17fa22895bc43a217d94640f192aa0a49e610c37c891367f96b352f606a3f8eacaee63d7b64d3cfa20b

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C:\Windows\sys.exe

Filesize
137KB

MD5
8522992a01052983a769ba0b10ca9f57

SHA1
4d5205b76b885f9c430c64238d6247dd163cbb35

SHA256
034e40b6fe0f3fecbedc27b056247df41568244782f7cabe405104d7eca4cf0e

SHA512
20c91beff9f4d963637374bfc8ba6f8dffb66b6e6e35f17fa22895bc43a217d94640f192aa0a49e610c37c891367f96b352f606a3f8eacaee63d7b64d3cfa20b

Download Submit
C:\sys.exe

Filesize
137KB

MD5
7bd72e17ff5bac51277d6a0b9d3525eb

SHA1
4b08298e1ee4bdead1403dd21e21d3c9393d8934

SHA256
384f2d33fd2d6ad7dd5e24fa1959cd9cbfd19f6902d0e52652042994e5944408

SHA512
b1718f837109e73ee8bbb22c05028a49681cd8d62f51ba177b7eb6bc6d7eeeb53dcea317a5ad18a36119d6d1222175ecf62ad8933b2e191e6c38037544624a16

Download Submit
\??\c:\sys.exe

Filesize
137KB

MD5
7bd72e17ff5bac51277d6a0b9d3525eb

SHA1
4b08298e1ee4bdead1403dd21e21d3c9393d8934

SHA256
384f2d33fd2d6ad7dd5e24fa1959cd9cbfd19f6902d0e52652042994e5944408

SHA512
b1718f837109e73ee8bbb22c05028a49681cd8d62f51ba177b7eb6bc6d7eeeb53dcea317a5ad18a36119d6d1222175ecf62ad8933b2e191e6c38037544624a16

Download Submit