77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84

Analysis

max time kernel
150s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:25

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General

Target

77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe
Size

35KB
MD5

0e3ad341fd77e50c48353536e47727d0
SHA1

3bc5c4460da455637c41508e90db9064a8e74c84
SHA256

77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84
SHA512

be6e5b591ebd194e42a77a56843183c0888c25a4e88bd6e0c4d02c22493f8d2bd137cb04f7bee829410b6ed444005c89e155c0699c45e985be4667227b03d5cb
SSDEEP

768:/qPJtHA6C1VqahohtgVRNToV7TtRu8rM0wYVFl2g5coW58dO0xXHV2EfKYfdhNhp:/qnA6C1VqaqhtgVRNToV7TtRu8rM0wYJ

Score

7^/10

persistence

Malware Config

Signatures

Deletes itself 1 IoCs

Processes:

microsofthelp.exe

pid process

3532 microsofthelp.exe
Executes dropped EXE 1 IoCs

Processes:

microsofthelp.exe

pid process

3532 microsofthelp.exe

pid	process
3532	microsofthelp.exe

pid	process
3532	microsofthelp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe

Drops file in Windows directory 1 IoCs

Processes:

77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe

description ioc process

File created C:\Windows\microsofthelp.exe 77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe

description	ioc	process
File created	C:\Windows\microsofthelp.exe	77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe

description	pid	process	target process
PID 5072 wrote to memory of 3532	5072	77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe	microsofthelp.exe
PID 5072 wrote to memory of 3532	5072	77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe	microsofthelp.exe
PID 5072 wrote to memory of 3532	5072	77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe	microsofthelp.exe

C:\Users\Admin\AppData\Local\Temp\77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe
"C:\Users\Admin\AppData\Local\Temp\77b184c69af18f9d53948507ce8cc3baf89a08c4850659d1b78cf6a209f04b84.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:5072

C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
2⤵
- Deletes itself
- Executes dropped EXE
PID:3532

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Windows\microsofthelp.exe
Filesize
35KB

MD5
99976a28c4f75bb0626d2c7f9d1d3fb7

SHA1
c6191b80d5ea01a23005756912daf3048198ed6c

SHA256
739962689cbee57e4a82ef0e46a7f8f91e23286036c68298b2efcda436b656b5

SHA512
5241567565c2ef2e154c1f8a6b0701ada0be83c86bb2d5a37da10335861f4ab4152c7cf84d4a2a8571f01c86bfbdf77cce2991404db1f4dd4d34b71b1dfbe315

Download Submit
memory/3532-4-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/5072-0-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download