Analysis
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max time kernel
183s -
max time network
181s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
21-10-2022 05:18
Static task
static1
Behavioral task
behavioral1
Sample
fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
7 signatures
150 seconds
General
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Target
fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe
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Size
218KB
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MD5
5a366d62530247bbb7fe6460fc748da0
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SHA1
c430642e000fbff14d0e05209085a473d33aaf1f
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SHA256
fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c
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SHA512
dd08b8d160aecfc2f6937475e058b29b4ab70cf0f5d9ecde56d4dddd297fac8437f5943a7c10f4bbb5ee349911d038003526429aabd3fc04f344969d02645c67
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SSDEEP
6144:2TMpSoR/PJ+Ol8uTCnDnxdj24lSZACZK:2WSoR/PJ+OlvqDxR24lSZAd
Score
8/10
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 1244 cwrss.exe -
Loads dropped DLL 2 IoCs
pid Process 1780 fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe 1780 fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe -
Enumerates connected drives 3 TTPs 22 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\r: cwrss.exe File opened (read-only) \??\v: cwrss.exe File opened (read-only) \??\l: cwrss.exe File opened (read-only) \??\u: cwrss.exe File opened (read-only) \??\q: cwrss.exe File opened (read-only) \??\s: cwrss.exe File opened (read-only) \??\t: cwrss.exe File opened (read-only) \??\j: cwrss.exe File opened (read-only) \??\k: cwrss.exe File opened (read-only) \??\m: cwrss.exe File opened (read-only) \??\n: cwrss.exe File opened (read-only) \??\o: cwrss.exe File opened (read-only) \??\y: cwrss.exe File opened (read-only) \??\z: cwrss.exe File opened (read-only) \??\p: cwrss.exe File opened (read-only) \??\w: cwrss.exe File opened (read-only) \??\x: cwrss.exe File opened (read-only) \??\e: cwrss.exe File opened (read-only) \??\f: cwrss.exe File opened (read-only) \??\g: cwrss.exe File opened (read-only) \??\h: cwrss.exe File opened (read-only) \??\i: cwrss.exe -
Modifies registry class 34 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\shell\open fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\shell\runas fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\shell\runas\command fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\shell\runas\command\ = "\"%1\" %*" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\Software\Classes\.exe fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\DefaultIcon\ = "%1" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\shell\open fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\DefaultIcon\ = "%1" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\Software\Classes\cscsvc\DefaultIcon fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\shell\open\command fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\shell\open\command fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\shell\runas\ommand fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\shell\runas\ommand\ = "\"%1\" %*" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\Content-Type = "application/x-msdownload" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\ = "cscsvc" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\Software\Classes\.exe\DefaultIcon fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\Software\Classes\.exe\shell\runas\ommand fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\shell\runas\command\IsolatedCommand = "\"%1\" %*" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\Software\Classes\cscsvc\shell\runas\command fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\Software\Classes\.exe\shell\open\command fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\shell\open\command\ = "\"C:\\ProgramData\\Microsoft\\Ole32\\cwrss.exe\" /START \"%1\" %*" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\shell\open\command\ = "\"C:\\ProgramData\\Microsoft\\Ole32\\cwrss.exe\" /START \"%1\" %*" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\Software\Classes\cscsvc\shell\open\command fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\Content-Type = "application/x-msdownload" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.exe fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\ = "Application" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\shell fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc\shell\open\command\IsolatedCommand = "\"%1\" %*" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\shell\runas fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\Software\Classes\cscsvc fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\shell\runas\ommand\IsolatedCommand = "\"%1\" %*" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\shell\open\command\IsolatedCommand = "\"%1\" %*" fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.exe\shell fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\cscsvc fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1780 fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe 1244 cwrss.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 1780 fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1244 cwrss.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1780 wrote to memory of 1244 1780 fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe 28 PID 1780 wrote to memory of 1244 1780 fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe 28 PID 1780 wrote to memory of 1244 1780 fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe 28 PID 1780 wrote to memory of 1244 1780 fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe"C:\Users\Admin\AppData\Local\Temp\fccf98555ca5f1c110163b2d07db2ecf86207b42551e3d31938ebd4e6ec5621c.exe"1⤵
- Loads dropped DLL
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1780 -
C:\ProgramData\Microsoft\Ole32\cwrss.exeC:\ProgramData\Microsoft\Ole32\cwrss.exe2⤵
- Executes dropped EXE
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1244
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
218KB
MD5f03197ea7486d52c2410542fc60804c7
SHA154c01e6222f06006030870315f123e2b37b55afa
SHA25670f0eaf7a452750be1a742ff291d5bd361db13fd5b4761a2d422f121f833ed88
SHA5125a9aac4b363160cf6f790bc7d40958c70a9b20fa0b0afb3489d74bb3095d58a09e2a68e6fe504574a023eed16d7697b074b9b81a7bd56587465b7f55f3f3ad1a
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Filesize
218KB
MD5f03197ea7486d52c2410542fc60804c7
SHA154c01e6222f06006030870315f123e2b37b55afa
SHA25670f0eaf7a452750be1a742ff291d5bd361db13fd5b4761a2d422f121f833ed88
SHA5125a9aac4b363160cf6f790bc7d40958c70a9b20fa0b0afb3489d74bb3095d58a09e2a68e6fe504574a023eed16d7697b074b9b81a7bd56587465b7f55f3f3ad1a
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Filesize
218KB
MD5f03197ea7486d52c2410542fc60804c7
SHA154c01e6222f06006030870315f123e2b37b55afa
SHA25670f0eaf7a452750be1a742ff291d5bd361db13fd5b4761a2d422f121f833ed88
SHA5125a9aac4b363160cf6f790bc7d40958c70a9b20fa0b0afb3489d74bb3095d58a09e2a68e6fe504574a023eed16d7697b074b9b81a7bd56587465b7f55f3f3ad1a
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Filesize
218KB
MD5f03197ea7486d52c2410542fc60804c7
SHA154c01e6222f06006030870315f123e2b37b55afa
SHA25670f0eaf7a452750be1a742ff291d5bd361db13fd5b4761a2d422f121f833ed88
SHA5125a9aac4b363160cf6f790bc7d40958c70a9b20fa0b0afb3489d74bb3095d58a09e2a68e6fe504574a023eed16d7697b074b9b81a7bd56587465b7f55f3f3ad1a