b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979

Analysis

max time kernel
151s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:15

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General

Target

b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe
Size

29KB
MD5

ac813035c15dd66813f73ae71f9ed3b6
SHA1

8251f84cfffad8f2fabc6ef99f69430ee8283e2f
SHA256

b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979
SHA512

cd8d324ec2f016faa5a5c74af5e41b8c827a6258b765a08057e6fbfafe7af08b323f13f41fc56dbb05c8303a973f38f4fc28a8fbd70b361ea4b55cc55d99081d
SSDEEP

768:HqPJtGoA6C1VqahohtgVRNToV7TtRu8rM0wYVFl2g5coW58dO0xXHV2EfKYfh7cO:HqmoA6C1VqaqhtgVRNToV7TtRu8rM0wg

Score

7^/10

persistence

Malware Config

Signatures

Deletes itself 1 IoCs

Processes:

microsofthelp.exe

pid process

3896 microsofthelp.exe
Executes dropped EXE 1 IoCs

Processes:

microsofthelp.exe

pid process

3896 microsofthelp.exe

pid	process
3896	microsofthelp.exe

pid	process
3896	microsofthelp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe

Drops file in Windows directory 1 IoCs

Processes:

b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe

description ioc process

File created C:\Windows\microsofthelp.exe b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe

description	ioc	process
File created	C:\Windows\microsofthelp.exe	b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe

description	pid	process	target process
PID 2456 wrote to memory of 3896	2456	b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe	microsofthelp.exe
PID 2456 wrote to memory of 3896	2456	b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe	microsofthelp.exe
PID 2456 wrote to memory of 3896	2456	b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe	microsofthelp.exe

C:\Users\Admin\AppData\Local\Temp\b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe
"C:\Users\Admin\AppData\Local\Temp\b799fda4b7e48e43b14388369dd9bbfd3cb658734baf4fd6a80eee73e3028979.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2456

C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
2⤵
- Deletes itself
- Executes dropped EXE
PID:3896

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1332 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
1⤵
PID:2948

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
30KB

MD5
89c390be67bba6af7a05e76a4c2f08cd

SHA1
775b51009ae15d07ddd455eb6bb73fc75ca136bd

SHA256
d6bbbb9f7560d00185aee0e2f7d72a9c947f523b8d55d624b45f86b1d0cee757

SHA512
e971db3b56a63577a917ff97e28045809e98250d75daca3f081ab9676a7a3c864033b0cef2ee6f1b05bbf791c0373a0229287be997abf82d732f541bff2398c1

Download Submit
memory/2456-0-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/2456-4-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download