2e1e9fcdf5c97ef55077a8c62ee0b60f614fa76e0fc5c06a7ac8a262ae67b21f

Resubmissions

01-02-2024 15:37

240201-s2hpvaahdm 10

23-09-2022 05:24

220923-f363lshbel 10

Analysis

max time kernel
43s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
23-09-2022 05:24

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General

Target

AvastSvcyHA/AvastAuth.dat
Size

160KB
MD5

03a75e4fd64e9b46d0dfff2589d27822
SHA1

099199fe7bf4e7245e44e9a977178348a37a4f61
SHA256

5eaaf8ac2d358c2d7065884b7994638fee3987f02474e54467f14b010a18d028
SHA512

0d85b7e220a359a75555ebd929396b73417ebff8d8f713b4053c9ebc99b51325e507220efbca8afa259dc18d6f09fc3f036bfe3190ff1225153db037932a7de1
SSDEEP

3072:1o6dVZjvZPKwu+rYA/cpZq1lQoRZv1tcZMIIDHIfztOgz01:66do+L/sI5wZMmtY

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\dat_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.dat	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\dat_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\dat_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\dat_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1884	AcroRd32.exe
1884	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 2012	2016	cmd.exe	28
PID 2016 wrote to memory of 2012	2016	cmd.exe	28
PID 2016 wrote to memory of 2012	2016	cmd.exe	28
PID 2012 wrote to memory of 1884	2012	rundll32.exe	29
PID 2012 wrote to memory of 1884	2012	rundll32.exe	29
PID 2012 wrote to memory of 1884	2012	rundll32.exe	29
PID 2012 wrote to memory of 1884	2012	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\AvastSvcyHA\AvastAuth.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\AvastSvcyHA\AvastAuth.dat
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\AvastSvcyHA\AvastAuth.dat"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1884-82-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/2016-54-0x000007FEFBF41000-0x000007FEFBF43000-memory.dmp

Filesize
8KB

Download