9efec71ad7d777f31faec653a203b66a0ffce86e24cdd7e87ee9b14837cb89d2

Analysis

max time kernel
151s
max time network
127s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
29/10/2023, 08:44

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General

Target

default_fragment.sh
Size

217B
MD5

5a210368e764b5f368d079a884aa65d3
SHA1

a72c682c7a14958a839b362f282ad2c11aa83800
SHA256

2388bd12b7910eb13e63d57d32d7e7f775f7b43bd758c854a1aef3b507bc3c64
SHA512

5a8203da5b6c34ce471a4218021b3d3579bd159a3b62d89ea4fa524ed171dc72d50d84a5d0ed0f098b27fe152f948bb11b2ca3c20b129fc11989571ec1d5efc4

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
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\sh_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\sh_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\sh_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\sh_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\sh_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\.sh	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\.sh\ = "sh_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\sh_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2032	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2032	AcroRd32.exe
2032	AcroRd32.exe
2032	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2896	3008	cmd.exe	29
PID 3008 wrote to memory of 2896	3008	cmd.exe	29
PID 3008 wrote to memory of 2896	3008	cmd.exe	29
PID 2896 wrote to memory of 2032	2896	rundll32.exe	30
PID 2896 wrote to memory of 2032	2896	rundll32.exe	30
PID 2896 wrote to memory of 2032	2896	rundll32.exe	30
PID 2896 wrote to memory of 2032	2896	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\default_fragment.sh
1⤵
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\default_fragment.sh
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2896
- - 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\default_fragment.sh"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2032

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

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Downloads

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

Filesize
3KB

MD5
b5c88324fda908eef2bb6786bb50c811

SHA1
2952a4419b64117f28eb0c78486bdfa37b752b00

SHA256
61e9c40ce68ec6acf3cf98709c78b489a3c768b45f572439353d383a6b4b6171

SHA512
975c3e430e0c864e8befa1108aca0128701b9bf942f914913207fab170d11ac4033208add61e64cff3781694e4caa017d630e1cf9596bc135f3950a0bbbc672b

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