6b8a5f0172a346d08d8e6325b5d5354a01055bdd8332f93aa174ad27b0ec1bee

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
30-08-2024 17:13

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General

Target

.bashrc
Size

3KB
MD5

1f98b8f3f3c8f8927eca945d59dcc1c6
SHA1

c4d853993e323432cb84359de2c319b9a767b729
SHA256

342099da4dd28c394d3f8782d90d7465cb2eaa611193f8f378d6918261cb9bb8
SHA512

33bb97936e54fe797b5046ece9c04313306fdc1470c959593f5cc2c641066372f2aee759db3a1bf45470b10c98ca964388172ded77eacaf2500e428d4f00331f

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

Processes:

AcroRd32.exe

description ioc process

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

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

Modifies registry class 9 IoCs

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\bashrc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\bashrc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\bashrc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\.bashrc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\bashrc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\bashrc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\.bashrc\ = "bashrc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\bashrc_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2864 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2864 AcroRd32.exe
2864 AcroRd32.exe

pid	process
2864	AcroRd32.exe

pid	process
2864	AcroRd32.exe
2864	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2568 wrote to memory of 2324	2568	cmd.exe	rundll32.exe
PID 2568 wrote to memory of 2324	2568	cmd.exe	rundll32.exe
PID 2568 wrote to memory of 2324	2568	cmd.exe	rundll32.exe
PID 2324 wrote to memory of 2864	2324	rundll32.exe	AcroRd32.exe
PID 2324 wrote to memory of 2864	2324	rundll32.exe	AcroRd32.exe
PID 2324 wrote to memory of 2864	2324	rundll32.exe	AcroRd32.exe
PID 2324 wrote to memory of 2864	2324	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\.bashrc
1⤵
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\.bashrc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2324
- - 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\.bashrc"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2864

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
f71f4fb1f96a0a0bd98b50b2a0760f87

SHA1
3a71eeb20539317e77b2ef9f08c26c4a36c2ac9f

SHA256
aa135a0b7669a76b9e02782a08af169019f1b01530300cdb426f672525dae1ed

SHA512
2930625bbd64df511de469121d5911cc0b89c6a41540e67a58006b7c458bc399741f9f99a52532a04b09fd487eec4e6d69487889d85bacc61d57cbb36e3cf85c

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