fc249baddd791772998825753f2ed6afb5cebab717f2017c5f8c78267173459e

Analysis

max time kernel
840s
max time network
845s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 14:34

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General

Target

samples/Everything32.dll.fileslack
Size

3KB
MD5

392c3b27af6755b705128fc738d77348
SHA1

1c23542f187fcff5aca60532fe6d30517e84c57d
SHA256

ea920d619c25a834bdf2fe7c82d36be2150a530ec1f5215cda741b23d29823cb
SHA512

901fe1a3ca757b2a883c49776ecda903b0fa521d584466416bcaa97ea83c2319692d399212cf9bf3c794df2e51ea8c452b120d944e6af139022097a800e3b072

Score

3^/10

discovery

Malware Config

Signatures

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.fileslack\ = "fileslack_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\fileslack_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.fileslack	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\fileslack_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\fileslack_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\fileslack_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\fileslack_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\fileslack_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2888	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2888	AcroRd32.exe
2888	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2412	2360	cmd.exe	31
PID 2360 wrote to memory of 2412	2360	cmd.exe	31
PID 2360 wrote to memory of 2412	2360	cmd.exe	31
PID 2412 wrote to memory of 2888	2412	rundll32.exe	33
PID 2412 wrote to memory of 2888	2412	rundll32.exe	33
PID 2412 wrote to memory of 2888	2412	rundll32.exe	33
PID 2412 wrote to memory of 2888	2412	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\samples\Everything32.dll.fileslack
1⤵
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\samples\Everything32.dll.fileslack
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2412
- - 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\samples\Everything32.dll.fileslack"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3KB

MD5
553663831c64458dab1ebacf466ba663

SHA1
361bbc825d666bd77ce3308293cd4b59d81c68ab

SHA256
65d11fa503b1f529a680c55ca1f03da8bdf5d0ad6b553723227206b6f66259c6

SHA512
2a0e74631cf8d51e2282aed8dda576f4fa010bf2537c186b584530f4edbd503be9341155e11af09e54b94a8fc46658df0ade74d9d8cb0315fa1ae005db07716b

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