b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7

Analysis

max time kernel
120s
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
09/11/2024, 21:58

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General

Target
b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe
Size 45KB
Sample241109-1vq2mstblh
SHA256 b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7
MD5 72e971e5e10af3407d1a376107aad690
SHA1 1410199f541cb2790d2f06f053100d1138020cf8
SHA512 079f0ecbe20a2b3be557d4237fe35f032804ce251e6f6aeaed131d87530e2c7e43f04d99faf8b1329e785f152702fa7329302ec9b1c1263606dde2ee9b6d0cf2
SSDEEP 768:ePyFZFASe0Ep0EpHZplRpqpd6rqxn4p6vghzwYu7vih9GueIh9j2IoHAjUvJw3/c:e6q10k0EFjed6rqJ+6vghzwYu7vih9GP
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3732	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
3732	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe
File created	C:\Windows\HidePlugin.dll	microsofthelp.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	microsofthelp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3992 wrote to memory of 3732	3992	b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe	85
PID 3992 wrote to memory of 3732	3992	b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe	85
PID 3992 wrote to memory of 3732	3992	b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe	85

C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe
"C:\Users\Admin\AppData\Local\Temp\b673172d8ace2327ebab9999782e5e764b1a96d63efbd3bbd990d69654727ad7N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:3732

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 45KB
SHA256 e39ed6608ca9493208189b81e44f8a2caf323e96d0cba08881032b02185ac6ab
MD5 18cd75ec7055e795d9e2670aca02fc3f
SHA1 d935ffcd200828c533639af3b5788c7c8ba11c50
SHA512 6530e0f8a7535ffc28617735d94eb2a2ad57ad54e57961e567de1a566ede6003ad0a7937ee6fb2e1f53509709a3544a2e0c455cadb58854968d28405503c9e40
SSDEEP 768:ePyFZFASe0Ep0EpHZplRpqpd6rqxn4p6vghzwYu7vih9GueIh9j2IoHAjUvJw3/t:e6q10k0EFjed6rqJ+6vghzwYu7vih9GG
MD5 SHA1 SHA512 SSDEEP

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memory/3732-6-0x0000000000400000-0x000000000040E000-memory.dmp

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memory/3992-0-0x0000000000400000-0x000000000040E000-memory.dmp

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memory/3992-4-0x0000000000400000-0x000000000040E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads