f0826415a5d43ce4e1bd2f9cc24be7f8f6a4e1fab5024b7827f5c4348b11c95e

Analysis

max time kernel
150s
max time network
41s
platform
windows7_x64
resource
win7-20220414-en
submitted
03-07-2022 17:44

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General

Target

f0826415a5d43ce4e1bd2f9cc24be7f8f6a4e1fab5024b7827f5c4348b11c95e.tar
Size

1.3MB
MD5

c913b748162ae2632a3a852ccda28d88
SHA1

3e109c22e2528ab049081dfd58e5cc13e5ab1dfb
SHA256

f0826415a5d43ce4e1bd2f9cc24be7f8f6a4e1fab5024b7827f5c4348b11c95e
SHA512

c1329a6184ed35aff7f3005376b71f615e42ed5cae91cd3d27873a7e89c79509009ca4eece8febe172840b5daa351f842dd6883b93401f16803d886b9062b2e2

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
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_CLASSES\.tar\ = "tar_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_CLASSES\tar_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_CLASSES\tar_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_CLASSES\tar_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_CLASSES\tar_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_CLASSES\tar_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_CLASSES\.tar	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000_CLASSES\tar_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1560	AcroRd32.exe
1560	AcroRd32.exe
1560	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1376 wrote to memory of 1968	1376	cmd.exe	28
PID 1376 wrote to memory of 1968	1376	cmd.exe	28
PID 1376 wrote to memory of 1968	1376	cmd.exe	28
PID 1968 wrote to memory of 1560	1968	rundll32.exe	29
PID 1968 wrote to memory of 1560	1968	rundll32.exe	29
PID 1968 wrote to memory of 1560	1968	rundll32.exe	29
PID 1968 wrote to memory of 1560	1968	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\f0826415a5d43ce4e1bd2f9cc24be7f8f6a4e1fab5024b7827f5c4348b11c95e.tar
1⤵
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\f0826415a5d43ce4e1bd2f9cc24be7f8f6a4e1fab5024b7827f5c4348b11c95e.tar
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1968
- - 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\f0826415a5d43ce4e1bd2f9cc24be7f8f6a4e1fab5024b7827f5c4348b11c95e.tar"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1560

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/1376-54-0x000007FEFC0F1000-0x000007FEFC0F3000-memory.dmp

Filesize
8KB

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memory/1560-82-0x0000000075D21000-0x0000000075D23000-memory.dmp

Filesize
8KB

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