7974252b4b71bf7d723292f95b8d07e5044efd45225e53c8d1b205f6ccd0bc8b

Analysis

max time kernel
81s
max time network
50s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
29-11-2022 20:14

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General

Target

5af9c6a0-f899-4124-de70-08dad23c8e67.gz
Size

8KB
MD5

c72f0718ad0ef493aa6fa2d8a99ba9db
SHA1

4efd889ca8aae103aa7f0e5c6b06862c203251ff
SHA256

7974252b4b71bf7d723292f95b8d07e5044efd45225e53c8d1b205f6ccd0bc8b
SHA512

a3601dad046873dfd8050550f6c1e18b9b9e72ac86695af3ec5e48bbe4ada27c6487890ff0cead464ab0a038a2156898392e085742ec98f1e011a2f3f1cba918
SSDEEP

192:82lgQaJWq+YRDho0AOdF2eLKiBvrhCVyGt+jPRCCzuTE:82gQaJWFYRDRdFxBvrhCyGWYCzX

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-1-5-21-4063495947-34355257-727531523-1000_CLASSES\gz_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\gz_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\gz_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\gz_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\gz_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.gz	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.gz\ = "gz_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\gz_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1696 AcroRd32.exe
1696 AcroRd32.exe
1696 AcroRd32.exe

pid	process
1696	AcroRd32.exe
1696	AcroRd32.exe
1696	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1340 wrote to memory of 1472	1340	cmd.exe	rundll32.exe
PID 1340 wrote to memory of 1472	1340	cmd.exe	rundll32.exe
PID 1340 wrote to memory of 1472	1340	cmd.exe	rundll32.exe
PID 1472 wrote to memory of 1696	1472	rundll32.exe	AcroRd32.exe
PID 1472 wrote to memory of 1696	1472	rundll32.exe	AcroRd32.exe
PID 1472 wrote to memory of 1696	1472	rundll32.exe	AcroRd32.exe
PID 1472 wrote to memory of 1696	1472	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\5af9c6a0-f899-4124-de70-08dad23c8e67.gz
1⤵
- Suspicious use of WriteProcessMemory
PID:1340

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\5af9c6a0-f899-4124-de70-08dad23c8e67.gz
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1472

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\5af9c6a0-f899-4124-de70-08dad23c8e67.gz"
3⤵
- Suspicious use of SetWindowsHookEx
PID:1696

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

Replay Monitor

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Downloads

memory/1340-54-0x000007FEFB9E1000-0x000007FEFB9E3000-memory.dmp

Filesize
8KB

Download
memory/1472-76-0x0000000000000000-mapping.dmp

Download
memory/1696-81-0x0000000000000000-mapping.dmp

Download
memory/1696-82-0x00000000758B1000-0x00000000758B3000-memory.dmp

Filesize
8KB

Download