a97caeea5750215ce3f795d9e309e43ae4afa66ca3092e172ce66688996f0b29

Analysis

max time kernel
102s
max time network
38s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
02-08-2024 21:27

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General

Target

data/OFFLINE/5EC33410/17F238BD/Bassalu4x10_con30_cap.grir
Size

54KB
MD5

4aaa39e4bcec201d8ebbeff7613e0f20
SHA1

75300a01aaa06f5eae8f066030ae760fd4d3e69b
SHA256

b44a4272cece0d86f79c6c403babaf426a8b6f7aa47c9973800c7fecb549b223
SHA512

172cab36f4ded0eac4d19097e0e2a0d3f4c377f60fc5d3ea794feccff45770422166baf4cc373931798717d913c5b6b9f8525df05ccbae60de19a5c7c9dfc2b0
SSDEEP

1536:2knYEiAgcEUMWinPuZnixihp1pym+xV/BD24H4Ejf:FYrA2LuZnXX10xq4H3f

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-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\grir_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\grir_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\grir_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\grir_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\grir_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\.grir	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_CLASSES\.grir\ = "grir_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000_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
2736	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2736	AcroRd32.exe
2736	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2856	2108	cmd.exe	32
PID 2108 wrote to memory of 2856	2108	cmd.exe	32
PID 2108 wrote to memory of 2856	2108	cmd.exe	32
PID 2856 wrote to memory of 2736	2856	rundll32.exe	33
PID 2856 wrote to memory of 2736	2856	rundll32.exe	33
PID 2856 wrote to memory of 2736	2856	rundll32.exe	33
PID 2856 wrote to memory of 2736	2856	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\data\OFFLINE\5EC33410\17F238BD\Bassalu4x10_con30_cap.grir
1⤵
- Suspicious use of WriteProcessMemory
PID:2108
- 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_cap.grir
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2856
- - 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_cap.grir"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2736

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
0efc200dd90c18ff971c9fd2ac74fc90

SHA1
12becf44928b1d1108114e5dfc374fc456914381

SHA256
9527ec8544f33011ee9f5ff501f0a7fea2e1a087cf1b21827db3e09a030afb8b

SHA512
dd63ebe67a127bc0c9b869124841c4219fad6d27de9e27eb2bdaf517c9ecf2d7bfbb44f7e97f913432b74b81a221d0b3aa22785ab6cb4d21677793d0219a01e3

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