91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3

Analysis

max time kernel
120s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/11/2024, 13:08

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General

Target
91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3N.exe
Size 30KB
Sample241109-qc8tmavemb
SHA256 91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3
MD5 f879507db5563a67872ded4bf5c56eb0
SHA1 c3e7a840a24be2e5af7300a108eaa5db47cc8753
SHA512 4eb7b4c3840f108b9a28647c99b3d0220952ddb2c9a9c78518030fdbb3c649425cb19975095cf878e81a164c721e5f0be0a2fbe0fad53da388d6ab48ae49be7d
SSDEEP 768:DqPJtsA6C1VqahohtgVRNToV7TtRu8rM0wk7IErqyEOGNFbuSxhLIsv/orINI8hM:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wkX
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
884	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
884	microsofthelp.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\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3N.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3N.exe

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	91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 884	2700	91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3N.exe	83
PID 2700 wrote to memory of 884	2700	91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3N.exe	83
PID 2700 wrote to memory of 884	2700	91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3N.exe	83

C:\Users\Admin\AppData\Local\Temp\91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3N.exe
"C:\Users\Admin\AppData\Local\Temp\91aa53816597e4d6812834272e79d98b6c07a7424b397965b54fb4d12366a2f3N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:884

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

microsofthelp.exe

Path C:\Windows\microsofthelp.exe
Size 30KB
SHA256 72eb01fabc7a9c02b241bd263e020725358b2ebbd2750611e6ac53c830bcbc4f
MD5 65e3301e2fb8b7dce1426f33c8245113
SHA1 a4baa9b58350715f874faff8e8d10e70ae1667d8
SHA512 1ec422a2c59563b4d0d7eac016e535435c2130bb1a8181f6f8581df55f3852533b077553ee2de4c12b43b23831e5b8bee192c2d8409201c76d535df154dede60
SSDEEP 768:DqPJtsA6C1VqahohtgVRNToV7TtRu8rM0wk7IErqyEOGNFbuSxhLIsv/orINI8hP:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wkR
MD5 SHA1 SHA512 SSDEEP

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memory/884-6-0x0000000000400000-0x0000000000403000-memory.dmp

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memory/2700-0-0x0000000000400000-0x0000000000403000-memory.dmp

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memory/2700-4-0x0000000000400000-0x0000000000403000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads