ebd0bd4778346204e1b7173a954e7a5f6a4799454a5b72edc45cf269fdbab232

Analysis

max time kernel
120s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-08-2024 04:23

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General

Target

b3c41b2fafb10b5f1c29f3523c9ce280N.exe
Size

77KB
MD5

b3c41b2fafb10b5f1c29f3523c9ce280
SHA1

d3561a710f6529845dcd2bc16404d1cac78447dd
SHA256

ebd0bd4778346204e1b7173a954e7a5f6a4799454a5b72edc45cf269fdbab232
SHA512

04648d03a191db3d2b08b8153e939901f3c038d6ed9cad078a3696850b4136f8508693efb18867a6fd0f55c7eee40661332234194ef58538c82bf807cd28bd7d
SSDEEP

1536:86RAo0ej2d6rnJwwvlNlIUBvsI7hrhEh9cpDN/qhAvP3OInvnHvvxIfhqhcGoI/D:xAo1lOwvlNlXBvsI7hrhEh9cpDN/qhAD

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4100	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
4100	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-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	b3c41b2fafb10b5f1c29f3523c9ce280N.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	b3c41b2fafb10b5f1c29f3523c9ce280N.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	b3c41b2fafb10b5f1c29f3523c9ce280N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 4100	1692	b3c41b2fafb10b5f1c29f3523c9ce280N.exe	84
PID 1692 wrote to memory of 4100	1692	b3c41b2fafb10b5f1c29f3523c9ce280N.exe	84
PID 1692 wrote to memory of 4100	1692	b3c41b2fafb10b5f1c29f3523c9ce280N.exe	84

C:\Users\Admin\AppData\Local\Temp\b3c41b2fafb10b5f1c29f3523c9ce280N.exe
"C:\Users\Admin\AppData\Local\Temp\b3c41b2fafb10b5f1c29f3523c9ce280N.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1692
- 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:4100

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

C:\Windows\microsofthelp.exe

Filesize
77KB

MD5
caec7a2d70cfaef267360e2458b2e658

SHA1
0d4e73781fd8a6e7618623cf8c15cf37fa9021c7

SHA256
42902f805be6fa42d74ad5a3e24f6fb7c59f3229083aa5e6bbfffa1cf567b84a

SHA512
1707c314d439af83a8fceab58848594f482530c4e20d30ba3cd6f82bafd94f58ababe37e9e5cd54e6b079ada2f008de108acb6baea4fffc2623591746f6d24a0

Download Submit
memory/1692-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/1692-4-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4100-6-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads