358a0a820e26b0a73df2528c783174a90d2c631c08904c61070fcaf67e10224e

Analysis

max time kernel
157s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 07:41

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General

Target

HEUR-Trojan.Win32.exe
Size

90KB
MD5

7cb7e384605f7e3db2c9414d78eb6509
SHA1

e9444d595858515bdffebac94797ed6f793be476
SHA256

358a0a820e26b0a73df2528c783174a90d2c631c08904c61070fcaf67e10224e
SHA512

02d256cdddc81a6739f912f969d96e0fb426aee626f96a236d11d6c7625e2f8730026d7d10272ae69b2d40e7b9e92c7e8d9d3dd1f381b3ea2387f6424dff7d47
SSDEEP

1536:NDj2d6rnJbJnJBSX1nV1b1N1Il1k1YFI1x1J1MuEqx517Q/1T1Jzct01Nsqnl1RJ:FlnnJBSX1nV1b1N1Il1k1YFI1x1J1Mu2

Score

7^/10

persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4040	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
4040	microsofthelp.exe

Loads dropped DLL 1 IoCs

pid	Process
4040	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-1-5-21-1904519900-954640453-4250331663-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	HEUR-Trojan.Win32.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	HEUR-Trojan.Win32.exe
File created	C:\Windows\HidePlugin.dll	microsofthelp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4040	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4180 wrote to memory of 4040	4180	HEUR-Trojan.Win32.exe	96
PID 4180 wrote to memory of 4040	4180	HEUR-Trojan.Win32.exe	96
PID 4180 wrote to memory of 4040	4180	HEUR-Trojan.Win32.exe	96

C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan.Win32.exe
"C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan.Win32.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4180
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:4040

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=4160 --field-trial-handle=2588,i,14229658658073991926,6938034815163866135,262144 --variations-seed-version /prefetch:8
1⤵
PID:3312

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\HidePlugin.dll

Filesize
5KB

MD5
4c0b9970f96300dfa1f45afc7539d35f

SHA1
ebbb4ed2003662d78d1f32e7b6da1b6f504ae711

SHA256
4e96660cc8be7171a79755a20860366987547322b3a809e78c9850f14c242262

SHA512
579f8787b52bf62a0296d8a24753263201fbc84abec5927033e3c97576f965ead0f8422acd3f7af1345b0df0001b0cd68fa971062e21269f6940cf3e1508ca88

Download Submit
C:\Windows\microsofthelp.exe

Filesize
90KB

MD5
bff4f0df54247aac6c5373c36aa0c3af

SHA1
17e0f07243ff7d878b1c178533fbb0893cab856b

SHA256
c0226bf3e04579a0622e9ff9cd8a721c8c3dc2d605a6659a387caae0d8de4132

SHA512
218c85be8e3e63df2a215ab08cdf0fd03a79c423114ac7ea910f5374e3b70dd3bdb209ab9282ada58cfa78b426de3a23c3fd428af4171d64fe1ad427cc8ec895

Download Submit
C:\Windows\microsofthelp.exe

Filesize
12KB

MD5
c23948f43877ad5a6f81320058a0d568

SHA1
3c076a5ae3bd0bef38cf66a20a2028875a3e6d6c

SHA256
bd7bc0d0277a32c859bef1f379a41e6f29a515f06efb8bf0141a6466a51dcf63

SHA512
7f9d447eff52e0d8c4393f22767c220c1d66b26fa5426cae9ae7f0edacc87670d348e4a2439492c17fa853ba1936e02e039b896dbd4a5f4788db9ede20e9c495

Download Submit
memory/4040-10-0x0000000010000000-0x0000000010005000-memory.dmp

Filesize
20KB

Download
memory/4040-17-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4180-0-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4180-4-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads