4cf4deaeba3985a478d520beb1e9d7ec42d7b332bfbe90513d207c894a0bad43

Analysis

max time kernel
151s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
28-11-2022 15:02

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General

Target

Tokens.sk
Size

4KB
MD5

fa656d935cc584d8c37a50f9b8b0686f
SHA1

e1fd90cff910c009fce81612470022b1b6ec9b7b
SHA256

4cf4deaeba3985a478d520beb1e9d7ec42d7b332bfbe90513d207c894a0bad43
SHA512

0d803c762a8aa0d4bdc58085cc9a21bb2d09d71f9b94f19b041335f555ea50ca04c0b83c993a4942e3bf5a6591b7457e78ced2751dce6c6cb85c83111d875f15
SSDEEP

96:1RjqLAkUc26FUm5xG/He4zH+03AOGwIoe7hlqsz:1QbUaUm5xGvewH+03AOGwIoe7hlqsz

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\sk_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.sk	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.sk\ = "sk_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\sk_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\sk_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\sk_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\sk_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\sk_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

560 AcroRd32.exe
560 AcroRd32.exe
560 AcroRd32.exe

pid	process
560	AcroRd32.exe
560	AcroRd32.exe
560	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2028 wrote to memory of 924	2028	cmd.exe	rundll32.exe
PID 2028 wrote to memory of 924	2028	cmd.exe	rundll32.exe
PID 2028 wrote to memory of 924	2028	cmd.exe	rundll32.exe
PID 924 wrote to memory of 560	924	rundll32.exe	AcroRd32.exe
PID 924 wrote to memory of 560	924	rundll32.exe	AcroRd32.exe
PID 924 wrote to memory of 560	924	rundll32.exe	AcroRd32.exe
PID 924 wrote to memory of 560	924	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Tokens.sk
1⤵
- Suspicious use of WriteProcessMemory
PID:2028

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Tokens.sk
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:924

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\Tokens.sk"
3⤵
- Suspicious use of SetWindowsHookEx
PID:560

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/560-81-0x0000000000000000-mapping.dmp

Download
memory/560-82-0x00000000762F1000-0x00000000762F3000-memory.dmp

Filesize
8KB

Download
memory/924-76-0x0000000000000000-mapping.dmp

Download
memory/2028-54-0x000007FEFC421000-0x000007FEFC423000-memory.dmp

Filesize
8KB

Download