bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60

Analysis

max time kernel
151s
max time network
143s
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 02:26

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General

Target

bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe
Size

33KB
MD5

85c68e408804ff53980f8c4c2717dd6e
SHA1

624647a201b99e7d16e2883772aacf9d123e4f3e
SHA256

bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60
SHA512

2efe41a5721ef4b9b27d3412acee2fe3af06cdea1b0399054840b704735d4b1e1c6df9eda1d3a7cc63c80ebaa54e355555c30b6f60f0a8966bbdff5b4d56cbc1
SSDEEP

768:/qPJtHA6C1VqahohtgVRNToV7TtRu8rM0wYVFl2g5coW58dO0xXHV2EfKYfdhNhB:/qnA6C1VqaqhtgVRNToV7TtRu8rM0wYh

Score

7^/10

persistence

Malware Config

Signatures

Deletes itself 1 IoCs

Processes:

microsofthelp.exe

pid process

5016 microsofthelp.exe
Executes dropped EXE 1 IoCs

Processes:

microsofthelp.exe

pid process

5016 microsofthelp.exe

pid	process
5016	microsofthelp.exe

pid	process
5016	microsofthelp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.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"	bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe

Drops file in Windows directory 1 IoCs

Processes:

bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe

description ioc process

File created C:\Windows\microsofthelp.exe bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe

description	ioc	process
File created	C:\Windows\microsofthelp.exe	bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe

description	pid	process	target process
PID 4480 wrote to memory of 5016	4480	bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe	microsofthelp.exe
PID 4480 wrote to memory of 5016	4480	bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe	microsofthelp.exe
PID 4480 wrote to memory of 5016	4480	bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe	microsofthelp.exe

C:\Users\Admin\AppData\Local\Temp\bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe
"C:\Users\Admin\AppData\Local\Temp\bc2bb26a265418d9f21e36e8c830f5e17599d0ebdffc021aa5c49842a46ace60.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4480

C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
2⤵
- Deletes itself
- Executes dropped EXE
PID:5016

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=3844 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
1⤵
PID:4612

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
33KB

MD5
140aef4adef889a4bce7e8e606cc11e9

SHA1
fd08c91110f106be90ccd3bcbe813e679f5e9e1b

SHA256
870dd3c2a7c004a9382ef90f1b974d82eeb820323721ac5c20692b8110d317c3

SHA512
011cfe931596e7c6047d3ded545710d1b5baa909d62d0f0cb9ac81434c48ef2d19d43c6ab326a31233b980f8f5d33682f5c75957d34ef40a174cb7bb6895b1fb

Download Submit
memory/4480-0-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/4480-5-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download