b17774a0d42efb6649686b25cba82ba6ced84a099555308c483117ddc73bc43b

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
26/05/2024, 12:20

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General

Target

gost.sh
Size

36KB
MD5

7e0de3d5cbcabfb2ca1b51621d75cd4f
SHA1

16044db594820733add6ead599d0d1a4eab97ef8
SHA256

b17774a0d42efb6649686b25cba82ba6ced84a099555308c483117ddc73bc43b
SHA512

5a6b61cf6a438bc2533c9c774487e2295400d3973fd159f6cd4b12428d740ed30e5168a2064911ed4a8ed023bc60c6b4e2a6ea7985ca7d7e5cef93f6ea81a952
SSDEEP

384:ba3fsx+kS17gZCsOBT2pXyXI4lXkJA+Xgoz+lrFa++bJgX9+9loRk:ba3fI+kS9RwXyXpI

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
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\.sh\ = "sh_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\.sh	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_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
2724	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2724	AcroRd32.exe
2724	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 2672	1632	cmd.exe	29
PID 1632 wrote to memory of 2672	1632	cmd.exe	29
PID 1632 wrote to memory of 2672	1632	cmd.exe	29
PID 2672 wrote to memory of 2724	2672	rundll32.exe	30
PID 2672 wrote to memory of 2724	2672	rundll32.exe	30
PID 2672 wrote to memory of 2724	2672	rundll32.exe	30
PID 2672 wrote to memory of 2724	2672	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\gost.sh
1⤵
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\gost.sh
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2672
- - 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\gost.sh"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2724

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

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
909c91b09c8c770bb286068fa08b08c7

SHA1
45b55a454cab50bc4d70cf14a208e453db7f1cc0

SHA256
ed48bfc7e6b1de6f19b1bd4a1c9d86e32470377dc971a52b1ffb500dd297909f

SHA512
a32b3176ed3e549a4cf7423be51192b86348ca2f46f24ef395b46d16b9e66e44fc8b06859a50513ed0180742630e8ff13e9d1e9fb27ed172cca6938e0ba50ffa

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