6db0196051de9c503113dce40830b9753b0d665a27bbfb7241145b2a76624711

Resubmissions

10-07-2023 00:46

230710-a4pxtsgd35 8

10-07-2023 00:44

230710-a3kxgshb6v 8

Analysis

max time kernel
13s
max time network
17s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
10-07-2023 00:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

speedy_external.exe
Size

905KB
MD5

0620aba50b19da41030910bc8af3a898
SHA1

3494b429f53840bdf573c58e698e6b6ca22df7e0
SHA256

6db0196051de9c503113dce40830b9753b0d665a27bbfb7241145b2a76624711
SHA512

4309db71618f86038fabffc7a7eeea20533c657500ba9293ae6b1104c9a1ac3378bc02a922d05ff9b4ab11f9c597256fea0fb0898c74f58b0a3f6c4e6d33f203
SSDEEP

24576:X2QFo9R9ptl76o60OegX7AoMn8XnMvQo:POdc0ErvMn

Score

8^/10

persistence

Malware Config

Signatures

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ByFcSyPKQfrhB\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\ByFcSyPKQfrhB"	yukleyici.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\Control Panel\International\Geo\Nation	speedy_external.exe

Executes dropped EXE 1 IoCs

pid	Process
4756	yukleyici.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SoftwareDistribution\Download\yukleyici.exe	speedy_external.exe
File created	C:\Windows\SoftwareDistribution\Download\speedydrv.sys	speedy_external.exe

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

System Information Discovery
T1082

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4756	yukleyici.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeLoadDriverPrivilege	4756	yukleyici.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4092 wrote to memory of 4756	4092	speedy_external.exe	84
PID 4092 wrote to memory of 4756	4092	speedy_external.exe	84
PID 4092 wrote to memory of 4496	4092	speedy_external.exe	87
PID 4092 wrote to memory of 4496	4092	speedy_external.exe	87
PID 4092 wrote to memory of 1548	4092	speedy_external.exe	88
PID 4092 wrote to memory of 1548	4092	speedy_external.exe	88
PID 4092 wrote to memory of 1852	4092	speedy_external.exe	89
PID 4092 wrote to memory of 1852	4092	speedy_external.exe	89

C:\Users\Admin\AppData\Local\Temp\speedy_external.exe
"C:\Users\Admin\AppData\Local\Temp\speedy_external.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4092
- C:\Windows\SoftwareDistribution\Download\yukleyici.exe
  "C:\Windows\SoftwareDistribution\Download\yukleyici.exe" C:\Windows\SoftwareDistribution\Download\speedydrv.sys
  2⤵
  - Sets service image path in registry
  - Executes dropped EXE
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:4756
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c color e
  2⤵
  PID:4496
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:1548
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c color c
  2⤵
  PID:1852

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SoftwareDistribution\Download\yukleyici.exe

Filesize
134KB

MD5
34cfbe3ff70461820ccc31a1afeec0b3

SHA1
5d32e91c039c9a6f723ba3c04c1179d02e6a0ce9

SHA256
6ebcc6896b243c761da4fc28a26249b0c146ae17aff7697c09bc447008e831df

SHA512
1ca4661be645e7e954d89c83f1fd126a5e936533052d4e330c9faccb83bb5942d28265375cee743e468b1625a0c1f10888e7957fe88c718e8501a86a78cdc06e

Download Submit
C:\Windows\SoftwareDistribution\Download\yukleyici.exe

Filesize
134KB

MD5
34cfbe3ff70461820ccc31a1afeec0b3

SHA1
5d32e91c039c9a6f723ba3c04c1179d02e6a0ce9

SHA256
6ebcc6896b243c761da4fc28a26249b0c146ae17aff7697c09bc447008e831df

SHA512
1ca4661be645e7e954d89c83f1fd126a5e936533052d4e330c9faccb83bb5942d28265375cee743e468b1625a0c1f10888e7957fe88c718e8501a86a78cdc06e

Download Submit
C:\Windows\SoftwareDistribution\Download\yukleyici.exe

Filesize
134KB

MD5
34cfbe3ff70461820ccc31a1afeec0b3

SHA1
5d32e91c039c9a6f723ba3c04c1179d02e6a0ce9

SHA256
6ebcc6896b243c761da4fc28a26249b0c146ae17aff7697c09bc447008e831df

SHA512
1ca4661be645e7e954d89c83f1fd126a5e936533052d4e330c9faccb83bb5942d28265375cee743e468b1625a0c1f10888e7957fe88c718e8501a86a78cdc06e

Download Submit