604e6b511359e9d0a50fd6df5d39a5fe4f5f82ae30a0832566bfe77962466d97

Analysis

max time kernel
141s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 08:39

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General

Target
tmp.exe
Size 22.6MB
Sample240223-kkbk7sed62
SHA256 604e6b511359e9d0a50fd6df5d39a5fe4f5f82ae30a0832566bfe77962466d97
MD5 2c0378fd61320cf9a69c353efeb9fd10
SHA1 7b3fe765aacfa3c6c8113aae107c99b6120bdd2d
SHA512 4f85a845a0bcf1dabfd8e520a03680784bcf101d53c1782b2122a289badf3723b274157246f61dcfc167d11f504f2301b601aae8179227a07e51ae34c25af850
SSDEEP 393216:+G251FGAsxevJZx3W0KaALRadLxlkux8Y++90R5R:+D1Ftp3txl8Y++90nR
MD5 SHA1 SHA512 SSDEEP

Score

4^/10

Malware Config

Signatures

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\ShellExperiences\security\install.zip	tmp.exe
File created	C:\Windows\ShellExperiences\security\ScheduledDefrag.xml	tmp.exe
File opened for modification	C:\Windows\ShellExperiences\security\ScheduledDefrag.xml	tmp.exe
File created	C:\Windows\ShellExperiences\security\syns.exe	tmp.exe
File opened for modification	C:\Windows\ShellExperiences\security\syns.exe	tmp.exe

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
872	schtasks.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4500 wrote to memory of 1980	4500	tmp.exe	87
PID 4500 wrote to memory of 1980	4500	tmp.exe	87
PID 4500 wrote to memory of 4080	4500	tmp.exe	88
PID 4500 wrote to memory of 4080	4500	tmp.exe	88
PID 1980 wrote to memory of 4112	1980	cmd.exe	90
PID 1980 wrote to memory of 4112	1980	cmd.exe	90
PID 4080 wrote to memory of 872	4080	cmd.exe	91
PID 4080 wrote to memory of 872	4080	cmd.exe	91

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4500
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c schtasks /delete /tn ""Microsoft\Windows\Bluetooth\ScheduledDefrag"" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\Windows\system32\schtasks.exe
    schtasks /delete /tn ""Microsoft\Windows\Bluetooth\ScheduledDefrag"" /f
    3⤵
    PID:4112
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c schtasks /create /xml "C:\Windows\ShellExperiences\security\ScheduledDefrag.xml" /tn "Microsoft\Windows\Bluetooth\ScheduledDefrag" /RU SYSTEM
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4080
- - C:\Windows\system32\schtasks.exe
    schtasks /create /xml "C:\Windows\ShellExperiences\security\ScheduledDefrag.xml" /tn "Microsoft\Windows\Bluetooth\ScheduledDefrag" /RU SYSTEM
    3⤵
    - Creates scheduled task(s)
    PID:872

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

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

ScheduledDefrag.xml

Path C:\Windows\ShellExperiences\security\ScheduledDefrag.xml
Size 5KB
SHA256 0f1ed1fa5849b041d5328e4fd3e1a286235de643c7b7d2f67d9172eeb561d984
MD5 6436ae27bc4eda6c83b96b097b91783a
SHA1 27996feb564fbcb59c1aba433fd1f86780a4e59f
SHA512 9cb91f6f69999658cd98c79b1b3ea88edc423eca8867818dcfe3109773af4a750b8255890244bce376aa0828f99c505ced13315e43c677033d67ed700649d472
SSDEEP 96:LI3d3gQmOuMk4iw6h7JTsuXvdRioGs2/GdiaigV9ll7UY5sFC8x+:6N/m94o1tvdR8s4xaj7sLx+
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads