a97caeea5750215ce3f795d9e309e43ae4afa66ca3092e172ce66688996f0b29

Analysis

max time kernel
103s
max time network
36s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
02/08/2024, 21:27

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General

Target

data/OFFLINE/5EC33410/17F238BD/Bassalu4x10_con30_cone.grir
Size

91KB
MD5

5797f6a7caec36fac150d44021781263
SHA1

30d4b4ed3edf84f096fc09ae0c75a37f40e0052b
SHA256

aa6d3468785de630a7d1e17dad9f788185dee5127120534419a0e653daae1a50
SHA512

b9b5e3ed1537307db5d33e4994331f4acb2eaf53999aa4b1d73703710e3d6250e082c737c73abf2e8dad048daf6d7f28c44ab2afdd61270b01d2a7ade0a2a0de
SSDEEP

1536:aLY6xiaJPW+sMBkcING8WAQAIaGI48WVTxqWyyxC7VPL86I6/X3QgK62r5Qjx3:T69tWcSbQhpbxNyyxiL8v6/XAgK62r5o

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
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\grir_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\grir_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\.grir	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\.grir\ = "grir_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\grir_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\grir_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\grir_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_CLASSES\grir_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
2608	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2608	AcroRd32.exe
2608	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 2840	2472	cmd.exe	30
PID 2472 wrote to memory of 2840	2472	cmd.exe	30
PID 2472 wrote to memory of 2840	2472	cmd.exe	30
PID 2840 wrote to memory of 2608	2840	rundll32.exe	31
PID 2840 wrote to memory of 2608	2840	rundll32.exe	31
PID 2840 wrote to memory of 2608	2840	rundll32.exe	31
PID 2840 wrote to memory of 2608	2840	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\data\OFFLINE\5EC33410\17F238BD\Bassalu4x10_con30_cone.grir
1⤵
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\data\OFFLINE\5EC33410\17F238BD\Bassalu4x10_con30_cone.grir
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2840
- - 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\data\OFFLINE\5EC33410\17F238BD\Bassalu4x10_con30_cone.grir"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2608

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
3c6ccb5c2079b7167aa95164a919e17b

SHA1
a13c10e7cc733536da693d0d80654f61b506472f

SHA256
80b61807c226740dc1d2b25c18888775298db2758a75643197ce61795ee5640b

SHA512
b70f1ce62e4c7e46543a0845020021c32b69671b3109ead2d1f49be81f403509b996e06f704e5a990c260cb953eab47ef0c8e5fe400272f2fa63c791fc7a456b

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