982d5f3361e87da71a29764bc9bf7127c279bc92c48553b4453d5917bda07c18

Analysis

max time kernel
150s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
10/01/2023, 14:40

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General

Target

AFD4D2390099BB77FEDB7FBB4E6EFF9AB3B1802A94CFC1D13A842ED40C6D72E6.apk
Size

3.9MB
MD5

e4380e34f3fe77c78bc204c1d72f1007
SHA1

ed2e8bc131cf6bbd773cea2bc36573dc7e38b5f8
SHA256

982d5f3361e87da71a29764bc9bf7127c279bc92c48553b4453d5917bda07c18
SHA512

b624562621b960618e40224535e5fbaf224f8cb0ad7afc31bacf0ffc34bbf89ec20735f7ed5c2c7dac34ad0e5282ba762e46646518663b0483eac3e3af22142f
SSDEEP

98304:hJTV8qdGLaPnagsSpskLRMJL1DZTLxknv1cUgZecC6J51f:hsPLPgsSplLWjDZTVkNcUQCq

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-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\apk_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\apk_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\apk_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\apk_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.apk	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.apk\ = "apk_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\apk_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\apk_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1428	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1428	AcroRd32.exe
1428	AcroRd32.exe
1428	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1808 wrote to memory of 892	1808	cmd.exe	29
PID 1808 wrote to memory of 892	1808	cmd.exe	29
PID 1808 wrote to memory of 892	1808	cmd.exe	29
PID 892 wrote to memory of 1428	892	rundll32.exe	30
PID 892 wrote to memory of 1428	892	rundll32.exe	30
PID 892 wrote to memory of 1428	892	rundll32.exe	30
PID 892 wrote to memory of 1428	892	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\AFD4D2390099BB77FEDB7FBB4E6EFF9AB3B1802A94CFC1D13A842ED40C6D72E6.apk
1⤵
- Suspicious use of WriteProcessMemory
PID:1808
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\AFD4D2390099BB77FEDB7FBB4E6EFF9AB3B1802A94CFC1D13A842ED40C6D72E6.apk
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:892
- - 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\AFD4D2390099BB77FEDB7FBB4E6EFF9AB3B1802A94CFC1D13A842ED40C6D72E6.apk"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1428

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/1428-82-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

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memory/1808-54-0x000007FEFC3C1000-0x000007FEFC3C3000-memory.dmp

Filesize
8KB

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