5e98d30502164fac1ea8c564af0513e708a4cd121f6919b0fb85b7abb7bbb639

Analysis

max time kernel
119s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 20:33

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General

Target

rev_shell.sh
Size

102B
MD5

a0e5682687cd1f15f004f02e726b1007
SHA1

fbac84bd6c559265e0b5c5be5dfc6619e50224aa
SHA256

5e98d30502164fac1ea8c564af0513e708a4cd121f6919b0fb85b7abb7bbb639
SHA512

fccd196e4f9541ae195691bc31272f6f61702913d472080cbed07f57f96afa71c6e0eff42ac4c1811c4f9ee491b866b6e273abf37565009f687e65fc09fe34a7

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-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.sh	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.sh\ = "sh_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2640	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2640	AcroRd32.exe
2640	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2164	2224	cmd.exe	29
PID 2224 wrote to memory of 2164	2224	cmd.exe	29
PID 2224 wrote to memory of 2164	2224	cmd.exe	29
PID 2164 wrote to memory of 2640	2164	rundll32.exe	30
PID 2164 wrote to memory of 2640	2164	rundll32.exe	30
PID 2164 wrote to memory of 2640	2164	rundll32.exe	30
PID 2164 wrote to memory of 2640	2164	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\rev_shell.sh
1⤵
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\rev_shell.sh
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2164
- - 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\rev_shell.sh"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2640

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
251bb705587cf6365f447ba96752040c

SHA1
5276cad8ce8d5a5a664e460abfaa445e8e7ba2df

SHA256
8920a8c128587111e34baf5d5ae07eb00752ecd54be8101d935fcfebea347b40

SHA512
0f3b02dbc6de55348535ea390881397f06c9e761ece53e21eb1ac862bcd8bbf22f79df08ea01d4cf8c4e28b6c7adf89f7a4e63385b2267030ab9472a64504c29

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