f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663

Analysis

max time kernel
118s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2024, 00:43

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General

Target

f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe
Size

610KB
MD5

5e0a4b481f1729c71026587fb46ce3a0
SHA1

499b44674dd9b065ea30ef4ebed927b24cdf1c51
SHA256

f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663
SHA512

0b76ca2c769b50cf5b81d845314a7126acddaf3bb46c3b3bb04800c2999fdb3212fd87b2c8df33598f999d75c102a0bccd3c2be5c4d21d6fcd19407d74a7f307
SSDEEP

12288:oATuTAnKGwUAW3ycQqgYo3CyWoKEY3ZQi7gfqOuuh+c:WT+KjUdQqboyyWoK1NGqzuhb

Score

3^/10

discovery

Malware Config

Signatures

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5088	3740	WerFault.exe	93
2416	608	WerFault.exe	81

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client"	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
608	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe
608	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3740	winver.exe
608	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 608 wrote to memory of 3740	608	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe	93
PID 608 wrote to memory of 3740	608	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe	93
PID 608 wrote to memory of 3740	608	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe	93
PID 608 wrote to memory of 3740	608	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe	93
PID 3740 wrote to memory of 3488	3740	winver.exe	56
PID 608 wrote to memory of 3488	608	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe	56
PID 608 wrote to memory of 2520	608	f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe	42

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2520

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3488
- C:\Users\Admin\AppData\Local\Temp\f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe
  "C:\Users\Admin\AppData\Local\Temp\f55bcf3a656e792ff2850793882547027fc51ce7aa26ea8e2872983a56f68663N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:608
- - C:\Windows\SysWOW64\winver.exe
    winver
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:3740
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3740 -s 300
      4⤵
      Program crash
      PID:5088
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 952
    3⤵
    - Program crash
    PID:2416

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman
1⤵
- Modifies data under HKEY_USERS
PID:2696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3740 -ip 3740
1⤵
PID:2644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 608 -ip 608
1⤵
PID:620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/608-1-0x00000000046C0000-0x0000000004D18000-memory.dmp

Filesize
6.3MB

Download
memory/608-2-0x0000000003DC0000-0x0000000003DC1000-memory.dmp

Filesize
4KB

Download
memory/608-6-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/608-9-0x0000000005AD0000-0x00000000064D0000-memory.dmp

Filesize
10.0MB

Download
memory/608-13-0x0000000005AD0000-0x00000000064D0000-memory.dmp

Filesize
10.0MB

Download
memory/608-17-0x00000000046C0000-0x0000000004D18000-memory.dmp

Filesize
6.3MB

Download
memory/2520-12-0x00000000000D0000-0x00000000000D6000-memory.dmp

Filesize
24KB

Download
memory/2520-18-0x00000000000D0000-0x00000000000D6000-memory.dmp

Filesize
24KB

Download
memory/3488-4-0x0000000000C00000-0x0000000000C06000-memory.dmp

Filesize
24KB

Download
memory/3488-5-0x0000000000C00000-0x0000000000C06000-memory.dmp

Filesize
24KB

Download
memory/3488-10-0x0000000000C40000-0x0000000000C46000-memory.dmp

Filesize
24KB

Download