d9e2872d558721de5b09602fe211b1d5f8b53dd69537b4553bf536fd08feee61

Analysis

max time kernel
141s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 15:59

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General

Target
$TEMP/BroomSetup.exe
Size 4.7MB
Sample240222-te21msca7s
SHA256 50a46b3120da828502ef0caba15defbad004a3adb88e6eacf1f9604572e2d503
MD5 5e94f0f6265f9e8b2f706f1d46bbd39e
SHA1 d0189cba430f5eea07efe1ab4f89adf5ae2453db
SHA512 473dfa66a36feed9b29a43245074141478327ce22ba7cce512599379dcb783b4d665e2d65c5e9750b988c7ed8f6c3349a7a12d4b8b57c89840eee6ca6e1a30cd
SSDEEP 49152:90oSiZ63YBmS9+rCgpvH8la0ZxRh+caGnj8HEQUhexTUT+1d/2/Tbt:0Ula0cGwXUheabt
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
4396	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3396	BroomSetup.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3396 wrote to memory of 4720	3396	BroomSetup.exe	89
PID 3396 wrote to memory of 4720	3396	BroomSetup.exe	89
PID 3396 wrote to memory of 4720	3396	BroomSetup.exe	89
PID 4720 wrote to memory of 5080	4720	cmd.exe	91
PID 4720 wrote to memory of 5080	4720	cmd.exe	91
PID 4720 wrote to memory of 5080	4720	cmd.exe	91
PID 4720 wrote to memory of 4396	4720	cmd.exe	92
PID 4720 wrote to memory of 4396	4720	cmd.exe	92
PID 4720 wrote to memory of 4396	4720	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\$TEMP\BroomSetup.exe
"C:\Users\Admin\AppData\Local\Temp\$TEMP\BroomSetup.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4720
- - C:\Windows\SysWOW64\chcp.com
    chcp 1251
    3⤵
    PID:5080
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\$TEMP\Updater.exe'" /sc minute /mo 30 /F
    3⤵
    - Creates scheduled task(s)
    PID:4396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Task.bat

Path C:\Users\Admin\AppData\Roaming\Temp\Task.bat
Size 134B
SHA256 fe6f6d8f8785486a597976f1cc9587618d3ebda7814548182bd41233d8cd31e7
MD5 fe4c7277dd275839d983fe9e120c320d
SHA1 c42dc104bb9b4a6ed80af7ce99762954116305d7
SHA512 29fdb916f5f8a10a53f9bf3c6dfb6bdf73564b9e0a17a52e3c1a9b0457390d259bb0152bc40b7e7fadfa733d282f9c14e00f499a5bcbfe82c2b37eb90de861bf
MD5 SHA1 SHA512

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memory/3396-0-0x00000000028F0000-0x00000000028F1000-memory.dmp

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memory/3396-4-0x0000000000400000-0x00000000008E2000-memory.dmp

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memory/3396-6-0x00000000028F0000-0x00000000028F1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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