c5f8f6569fac20e7f0f94c7c717cf20949cb06d256ac2447aa4eef1f9ab4bfca

Analysis

max time kernel
122s
max time network
132s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 03:38

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General

Target

b185ee1d0e238b92148737f4a760c681.exe
Size

344KB
MD5

b185ee1d0e238b92148737f4a760c681
SHA1

c99f6e20909a78cf70384dd6df4fa6591632b2e0
SHA256

c5f8f6569fac20e7f0f94c7c717cf20949cb06d256ac2447aa4eef1f9ab4bfca
SHA512

20e144a638687638eda9b80d4ff649e7824cc657bed671dac679af37dcb6e33c07715edf691b10e3bd5c1b2d895fd9459afe67d82eb0f0b3f7b0bfb93de8f27d
SSDEEP

6144:DTz+WrPFZvTXb4RyW42vFlOloh2E+7pYUozDBRm1+gmN:DTBPFV0RyWl3h2E+7pYm0

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2716	dwmsys.exe
2684	dwmsys.exe

Loads dropped DLL 4 IoCs

pid	Process
2620	b185ee1d0e238b92148737f4a760c681.exe
2620	b185ee1d0e238b92148737f4a760c681.exe
2620	b185ee1d0e238b92148737f4a760c681.exe
2716	dwmsys.exe

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

System Information Discovery
T1082

Modifies registry class 28 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\DefaultIcon	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\shell\runas\command\ = "\"%1\" %*"	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\DefaultIcon\ = "%1"	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\shell\open\command\IsolatedCommand = "\"%1\" %*"	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\Content-Type = "application/x-msdownload"	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\DefaultIcon	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\shell\open\command	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\shell\open\command\IsolatedCommand = "\"%1\" %*"	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\shell\runas\command	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\shell\open	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\shell\runas	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\shell\runas\command\ = "\"%1\" %*"	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\shell\runas	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\DefaultIcon\ = "%1"	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\shell	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\SysWOW_amd64\\dwmsys.exe\" /START \"%1\" %*"	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\Content-Type = "application/x-msdownload"	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\shell\open	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\shell\runas\command	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\SysWOW_amd64\\dwmsys.exe\" /START \"%1\" %*"	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\ = "Application"	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\shell\runas\command\IsolatedCommand = "\"%1\" %*"	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\systemui\shell\runas\command\IsolatedCommand = "\"%1\" %*"	b185ee1d0e238b92148737f4a760c681.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\ = "systemui"	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\shell\open\command	b185ee1d0e238b92148737f4a760c681.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.exe\shell	b185ee1d0e238b92148737f4a760c681.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2716	dwmsys.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 2716	2620	b185ee1d0e238b92148737f4a760c681.exe	28
PID 2620 wrote to memory of 2716	2620	b185ee1d0e238b92148737f4a760c681.exe	28
PID 2620 wrote to memory of 2716	2620	b185ee1d0e238b92148737f4a760c681.exe	28
PID 2620 wrote to memory of 2716	2620	b185ee1d0e238b92148737f4a760c681.exe	28
PID 2716 wrote to memory of 2684	2716	dwmsys.exe	29
PID 2716 wrote to memory of 2684	2716	dwmsys.exe	29
PID 2716 wrote to memory of 2684	2716	dwmsys.exe	29
PID 2716 wrote to memory of 2684	2716	dwmsys.exe	29

C:\Users\Admin\AppData\Local\Temp\b185ee1d0e238b92148737f4a760c681.exe
"C:\Users\Admin\AppData\Local\Temp\b185ee1d0e238b92148737f4a760c681.exe"
1⤵
- Loads dropped DLL
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\Roaming\Microsoft\SysWOW_amd64\dwmsys.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\SysWOW_amd64\dwmsys.exe" /START "C:\Users\Admin\AppData\Roaming\Microsoft\SysWOW_amd64\dwmsys.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2716
- - C:\Users\Admin\AppData\Roaming\Microsoft\SysWOW_amd64\dwmsys.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\SysWOW_amd64\dwmsys.exe"
    3⤵
    - Executes dropped EXE
    PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Roaming\Microsoft\SysWOW_amd64\dwmsys.exe

Filesize
344KB

MD5
ba6b3e9e7fb1285f73d5afde9acf1b31

SHA1
47670254c1e8843ab4f57c03863e55ef2956490b

SHA256
484f5e3b627132e8df56b72dd2014b909105674cc4b53a72afe2cd9f2afe17f1

SHA512
7342ae9cf0672865f81835fa4a7c208b8d8bdcfbb6640b58417cb8a6b618cad6fda9e3ca9a909eb670e1bb63258f0a7e51b3be33745b02f8f1a9ec202089772c

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