7dd55d5932f394089ef875e89fb0c92edfa507ce096715e4928e08a0001079cd

General

Target

weave.exe
Size

3.1MB
MD5

a1b6a96519aaa206ac30aad7088e3242
SHA1

04bf79e8c40f4cda2a4b345ef1467e159bdb0fae
SHA256

7dd55d5932f394089ef875e89fb0c92edfa507ce096715e4928e08a0001079cd
SHA512

430fa2394e0a338f0fdb9efd6ce14ccab6ed4d0367e2ac58becef37a0f78b9d0675a33f6e7234fe76df29b39e7a16cfc097c89b3c78d5224ae669d928b11e086
SSDEEP

98304:dV5Cx40FHvu+ST0sI0aT7qrloC3Y2dSB6rWo4Bud5:FM40FGtAjrT7kloC3Y24ri

Score

9^/10

evasion execution themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	weave.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1096	powershell.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	weave.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	weave.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2756-0-0x000000013F840000-0x00000001400E2000-memory.dmp	themida
behavioral1/memory/2756-13-0x000000013F840000-0x00000001400E2000-memory.dmp	themida
behavioral1/memory/2756-14-0x000000013F840000-0x00000001400E2000-memory.dmp	themida
behavioral1/memory/2756-18-0x000000013F840000-0x00000001400E2000-memory.dmp	themida
behavioral1/memory/2756-25-0x000000013F840000-0x00000001400E2000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	weave.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2756	weave.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1096	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1096	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2500	2756	weave.exe	32
PID 2756 wrote to memory of 2500	2756	weave.exe	32
PID 2756 wrote to memory of 2500	2756	weave.exe	32
PID 2500 wrote to memory of 1096	2500	cmd.exe	33
PID 2500 wrote to memory of 1096	2500	cmd.exe	33
PID 2500 wrote to memory of 1096	2500	cmd.exe	33
PID 2756 wrote to memory of 2704	2756	weave.exe	34
PID 2756 wrote to memory of 2704	2756	weave.exe	34
PID 2756 wrote to memory of 2704	2756	weave.exe	34

C:\Users\Admin\AppData\Local\Temp\weave.exe
"C:\Users\Admin\AppData\Local\Temp\weave.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\windows\system32'" > NUL 2>&1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2500
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command "Add-MpPreference -ExclusionPath 'C:\windows\system32'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1096
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1096-9-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/1096-6-0x0000000077AB0000-0x0000000077C59000-memory.dmp

Filesize
1.7MB

Download
memory/1096-7-0x0000000077AB0000-0x0000000077C59000-memory.dmp

Filesize
1.7MB

Download
memory/1096-8-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/1096-10-0x0000000077AB0000-0x0000000077C59000-memory.dmp

Filesize
1.7MB

Download
memory/1096-11-0x0000000077AB0000-0x0000000077C59000-memory.dmp

Filesize
1.7MB

Download
memory/1096-12-0x0000000077AB0000-0x0000000077C59000-memory.dmp

Filesize
1.7MB

Download
memory/2756-1-0x0000000077B00000-0x0000000077B02000-memory.dmp

Filesize
8KB

Download
memory/2756-0-0x000000013F840000-0x00000001400E2000-memory.dmp

Filesize
8.6MB

Download
memory/2756-13-0x000000013F840000-0x00000001400E2000-memory.dmp

Filesize
8.6MB

Download
memory/2756-14-0x000000013F840000-0x00000001400E2000-memory.dmp

Filesize
8.6MB

Download
memory/2756-18-0x000000013F840000-0x00000001400E2000-memory.dmp

Filesize
8.6MB

Download
memory/2756-25-0x000000013F840000-0x00000001400E2000-memory.dmp

Filesize
8.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads