cf33487a4cc8cde7149f4555c82e122cabf5f45f46c143d8e4935be6a343b722

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 11:37

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General

Target

b74db91efd859c7213ddfd92cd945fd7.exe
Size

12KB
MD5

b74db91efd859c7213ddfd92cd945fd7
SHA1

e8348b6b3815e0b2d467dc95438461f06b26084b
SHA256

cf33487a4cc8cde7149f4555c82e122cabf5f45f46c143d8e4935be6a343b722
SHA512

b1c442d8c95f54a6f4ef9675269ee840ead9c88cd8eac160219c8e0de4a853dc2f0366751c35a70fe6014fa44be18a014cf3e1025bfcb735a247b8a0be55987d
SSDEEP

384:Hy8dXS2n9yMvlUeabjpZ5JIXIugtF0vvFYKgwaCJ:HyYXSelatugk96xCJ

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1192	avpms.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\avpms = "C:\\Program Files\\NetMeeting\\avpms.exe"	avpms.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\NetMeeting\avpms.exe	b74db91efd859c7213ddfd92cd945fd7.exe
File created	C:\Program Files\NetMeeting\avpms.exe	b74db91efd859c7213ddfd92cd945fd7.exe
File opened for modification	C:\Program Files\NetMeeting\avpms.cfg	b74db91efd859c7213ddfd92cd945fd7.exe
File opened for modification	C:\Program Files\NetMeeting\avpms.dat	avpms.exe
File created	C:\Program Files\NetMeeting\avpms.dat	avpms.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4524	b74db91efd859c7213ddfd92cd945fd7.exe
4524	b74db91efd859c7213ddfd92cd945fd7.exe
4524	b74db91efd859c7213ddfd92cd945fd7.exe
4524	b74db91efd859c7213ddfd92cd945fd7.exe
1192	avpms.exe
1192	avpms.exe
1192	avpms.exe
1192	avpms.exe
1192	avpms.exe
1192	avpms.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1192	avpms.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4524 wrote to memory of 1192	4524	b74db91efd859c7213ddfd92cd945fd7.exe	91
PID 4524 wrote to memory of 1192	4524	b74db91efd859c7213ddfd92cd945fd7.exe	91
PID 4524 wrote to memory of 1192	4524	b74db91efd859c7213ddfd92cd945fd7.exe	91
PID 1192 wrote to memory of 3444	1192	avpms.exe	57
PID 4524 wrote to memory of 4036	4524	b74db91efd859c7213ddfd92cd945fd7.exe	92
PID 4524 wrote to memory of 4036	4524	b74db91efd859c7213ddfd92cd945fd7.exe	92
PID 4524 wrote to memory of 4036	4524	b74db91efd859c7213ddfd92cd945fd7.exe	92

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3444
- C:\Users\Admin\AppData\Local\Temp\b74db91efd859c7213ddfd92cd945fd7.exe
  "C:\Users\Admin\AppData\Local\Temp\b74db91efd859c7213ddfd92cd945fd7.exe"
  2⤵
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4524
- - C:\Program Files\NetMeeting\avpms.exe
    "C:\Program Files\NetMeeting\avpms.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in Program Files directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1192
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del "C:\Users\Admin\AppData\Local\Temp\b74db91efd859c7213ddfd92cd945fd7.exe"
    3⤵
    PID:4036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\NetMeeting\avpms.exe

Filesize
12KB

MD5
b74db91efd859c7213ddfd92cd945fd7

SHA1
e8348b6b3815e0b2d467dc95438461f06b26084b

SHA256
cf33487a4cc8cde7149f4555c82e122cabf5f45f46c143d8e4935be6a343b722

SHA512
b1c442d8c95f54a6f4ef9675269ee840ead9c88cd8eac160219c8e0de4a853dc2f0366751c35a70fe6014fa44be18a014cf3e1025bfcb735a247b8a0be55987d

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