ef911d4f6162d25b42b36bd71b99dd256565a68410c707ee29c40a01f3797036

Analysis

max time kernel
95s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-09-2024 00:12

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General

Target

$TEMP/mode/Thumbs.db/intern/PermCalc.exe
Size

28KB
MD5

c2efc9fcbbf2d6952110fea17841b71e
SHA1

4860494e79e88beacb0155584056699adb073f44
SHA256

57f248daa64d83c215189a3d38b9692f93125273ee046328febe33e69df01ded
SHA512

5aa7033b6b9de91c309554b354d47d63c08d15d4d5ebe4ac6e98e059873c74149c869dea731a2754ca31dee526f27221cd210555693e5f6886cc26d271f39ae0
SSDEEP

384:xL8f6BoGrFTth3SAUnZV7OKAyXSKglWYbW:98iBoGxtSHqKgB

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dw20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PermCalc.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeRestorePrivilege	4908	dw20.exe
Token: SeBackupPrivilege	4908	dw20.exe
Token: SeBackupPrivilege	4908	dw20.exe
Token: SeBackupPrivilege	4908	dw20.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1036 wrote to memory of 4908	1036	PermCalc.exe	84
PID 1036 wrote to memory of 4908	1036	PermCalc.exe	84
PID 1036 wrote to memory of 4908	1036	PermCalc.exe	84

C:\Users\Admin\AppData\Local\Temp\$TEMP\mode\Thumbs.db\intern\PermCalc.exe
"C:\Users\Admin\AppData\Local\Temp\$TEMP\mode\Thumbs.db\intern\PermCalc.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1036
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
  dw20.exe -x -s 876
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:4908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1036-0-0x0000000074652000-0x0000000074653000-memory.dmp

Filesize
4KB

Download
memory/1036-1-0x0000000074650000-0x0000000074C01000-memory.dmp

Filesize
5.7MB

Download
memory/1036-2-0x0000000074650000-0x0000000074C01000-memory.dmp

Filesize
5.7MB

Download
memory/1036-9-0x0000000074650000-0x0000000074C01000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads