ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
03-12-2022 12:49

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General

Target

ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
Size

200KB
MD5

f9207876312c98414955668105185073
SHA1

761980d1d229e2fefd0cdd4127962760c6a55e7f
SHA256

ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317
SHA512

ee47aad746c923da1bbb645ec226528f00c917113ed2071f601982caa925e65d1d45a669a7ca1bdfc783f3ada083d479e84913ecf8852b45fb258b43c145e3dd
SSDEEP

3072:cqzn6/HBq3qAdGhS4k5p5pU4T4B+jca8Wz/9DMFIW925pOLA/hmqVvTVLC4HTkwn:cqz+Bq3qnop535+Wzmw5pSqpheLwe2

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 17 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\ = "Application"	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\Content Type = "application/x-msdownload"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\open\command	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\start\command	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\start\command\IsolatedCommand = "\"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\DefaultIcon	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\DefaultIcon\ = "%1"	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\cyt.exe\" -a \"%1\" %*"	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\open\command\IsolatedCommand = "\"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\runas\command	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\start	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\runas\command\IsolatedCommand = "\"%1\" %*"	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\start\command\ = "\"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\open	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\runas	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\runas\command\ = "\"%1\" %*"	cyt.exe

Disables taskbar notifications via registry modification
evasion

Executes dropped EXE 1 IoCs

pid	Process
320	cyt.exe

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

pid	Process
320	cyt.exe

Loads dropped DLL 2 IoCs

pid	Process
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctfmon.exe = "C:\\WINDOWS\\system32\\ctfmon.exe"	cyt.exe

Modifies registry class 41 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\cyt.exe\" -a \"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\start	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\Content Type = "application/x-msdownload"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\open\command	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\DefaultIcon\ = "%1"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\open	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\open\command\IsolatedCommand = "\"%1\" %*"	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\start\command\IsolatedCommand = "\"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\open\command	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\runas	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\runas\command\IsolatedCommand = "\"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell	cyt.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\ = "exefile"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\DefaultIcon	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\runas\command	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\ = "Application"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\DefaultIcon	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\open	cyt.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\start\command	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\start	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\runas\command\ = "\"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\runas\command\IsolatedCommand = "\"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\start\command	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\open\command\IsolatedCommand = "\"%1\" %*"	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\runas\command\ = "\"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\runas	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\shell\start\command\ = "\"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\DefaultIcon\ = "%1"	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\cyt.exe\" -a \"%1\" %*"	cyt.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\runas\command	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\start\command\ = "\"%1\" %*"	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.exe\Content Type = "application/x-msdownload"	cyt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\exefile\shell\start\command\IsolatedCommand = "\"%1\" %*"	cyt.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
320	cyt.exe
320	cyt.exe
320	cyt.exe
320	cyt.exe
320	cyt.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: 33	1888	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1888	AUDIODG.EXE
Token: 33	1888	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1888	AUDIODG.EXE
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe
Token: SeShutdownPrivilege	1684	explorer.exe

Suspicious use of FindShellTrayWindow 29 IoCs

pid	Process
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
320	cyt.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
320	cyt.exe
1684	explorer.exe
1684	explorer.exe

Suspicious use of SendNotifyMessage 18 IoCs

pid	Process
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
1684	explorer.exe
320	cyt.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 620 wrote to memory of 320	620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe	27
PID 620 wrote to memory of 320	620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe	27
PID 620 wrote to memory of 320	620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe	27
PID 620 wrote to memory of 320	620	ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe	27

C:\Users\Admin\AppData\Local\Temp\ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
"C:\Users\Admin\AppData\Local\Temp\ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:620
- C:\Users\Admin\AppData\Local\cyt.exe
  "C:\Users\Admin\AppData\Local\cyt.exe" -gav C:\Users\Admin\AppData\Local\Temp\ce471df96966d75b44262c3a06f364641030fc6c618f2c6c694d366a3c970317.exe
  2⤵
  - Modifies system executable filetype association
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:320

C:\Windows\explorer.exe
explorer.exe
1⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1684

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x590
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1888

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

T1042

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

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\Local\cyt.exe

Filesize
200KB

MD5
f84f38e145584046d3a1ef67ee792d56

SHA1
4d11fe78ba325da94a08bd35a6bab59c23619b8a

SHA256
b11bb3872a0538ad2e51dd2c9f8171876f3fbe1ce5073e951fac89d36855030b

SHA512
9fa1a798b26a1acacf8abf87a48f53a600b1c24e4b88c8960afbfd3abf78779da57cf7a7a2eebfeba1e6f9787614770d6645260e9ee467efc0ade785f179c6f5

Download Submit
C:\Users\Admin\AppData\Local\cyt.exe

Filesize
200KB

MD5
f84f38e145584046d3a1ef67ee792d56

SHA1
4d11fe78ba325da94a08bd35a6bab59c23619b8a

SHA256
b11bb3872a0538ad2e51dd2c9f8171876f3fbe1ce5073e951fac89d36855030b

SHA512
9fa1a798b26a1acacf8abf87a48f53a600b1c24e4b88c8960afbfd3abf78779da57cf7a7a2eebfeba1e6f9787614770d6645260e9ee467efc0ade785f179c6f5

Download Submit
\Users\Admin\AppData\Local\cyt.exe

Filesize
200KB

MD5
f84f38e145584046d3a1ef67ee792d56

SHA1
4d11fe78ba325da94a08bd35a6bab59c23619b8a

SHA256
b11bb3872a0538ad2e51dd2c9f8171876f3fbe1ce5073e951fac89d36855030b

SHA512
9fa1a798b26a1acacf8abf87a48f53a600b1c24e4b88c8960afbfd3abf78779da57cf7a7a2eebfeba1e6f9787614770d6645260e9ee467efc0ade785f179c6f5

Download Submit
\Users\Admin\AppData\Local\cyt.exe

Filesize
200KB

MD5
f84f38e145584046d3a1ef67ee792d56

SHA1
4d11fe78ba325da94a08bd35a6bab59c23619b8a

SHA256
b11bb3872a0538ad2e51dd2c9f8171876f3fbe1ce5073e951fac89d36855030b

SHA512
9fa1a798b26a1acacf8abf87a48f53a600b1c24e4b88c8960afbfd3abf78779da57cf7a7a2eebfeba1e6f9787614770d6645260e9ee467efc0ade785f179c6f5

Download Submit
memory/320-68-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

Filesize
8KB

Download
memory/320-69-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/320-70-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/320-71-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/620-58-0x0000000001F90000-0x0000000002247000-memory.dmp

Filesize
2.7MB

Download
memory/620-57-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/620-56-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/620-63-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/620-55-0x0000000075711000-0x0000000075713000-memory.dmp

Filesize
8KB

Download
memory/620-54-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/1684-64-0x000007FEFC301000-0x000007FEFC303000-memory.dmp

Filesize
8KB

Download