1cbdbc2553018d5afbfe7dc7755f54462660a48c6774389e3ee899ead9926f1e

Analysis

max time kernel
120s
max time network
127s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/01/2024, 10:05

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General

Target

com/appsflyer/oaid/R$styleable.class
Size

29KB
MD5

5a9bfaa8b0f891ec40b48fcef171aab1
SHA1

428fa5ad78e662c874cbfeaeca7c0b5fce66a74f
SHA256

d31f519143b1a36d6ed2184cfad10a7667b9d54030123b1ecc0c0a8f71ce6304
SHA512

4ae8b69e5fabfbc1e99eb0e3f1e42777f1a41f20a9dd707437fd8a0222fd420c1b9cc91c219706776b76694986313fc45f0218e0cc8258ef5c0484b55783c4d0
SSDEEP

384:eF5yBj7HDPYDQu9byG4CH/OKuZNiYXbnZEnVl6piJfWfarw:1DYbyG4CmKuziYXL1YJGaU

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\.class	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\class_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2620	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2620	AcroRd32.exe
2620	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2696	2868	cmd.exe	29
PID 2868 wrote to memory of 2696	2868	cmd.exe	29
PID 2868 wrote to memory of 2696	2868	cmd.exe	29
PID 2696 wrote to memory of 2620	2696	rundll32.exe	30
PID 2696 wrote to memory of 2620	2696	rundll32.exe	30
PID 2696 wrote to memory of 2620	2696	rundll32.exe	30
PID 2696 wrote to memory of 2620	2696	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\com\appsflyer\oaid\R$styleable.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\com\appsflyer\oaid\R$styleable.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2696
- - 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\com\appsflyer\oaid\R$styleable.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
02d80f8b70f3bf361cdecd9c7a0dc9fb

SHA1
e78f018e00a0b5f99dd7953f5a761aba900b96ba

SHA256
f52025a21a7cf45a89d08e4d539bb4dc9a9004246cbb9e84ca5c737b4c5afe8e

SHA512
789125f8b6f4421af06f04baac29b7edba2a4074f4f88b2dfca4ef8e60a1fb69b6c309bdcf090e62ee03c62979f687456484227d10c6a6c30f968525484483ff

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