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
4560	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 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/1472-0-0x00007FF6B3AA0000-0x00007FF6B4342000-memory.dmp	themida
behavioral2/memory/1472-53-0x00007FF6B3AA0000-0x00007FF6B4342000-memory.dmp	themida
behavioral2/memory/1472-58-0x00007FF6B3AA0000-0x00007FF6B4342000-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
1472	weave.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4560	powershell.exe
4560	powershell.exe
4560	powershell.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

description	pid	Process
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeIncreaseQuotaPrivilege	4560	powershell.exe
Token: SeSecurityPrivilege	4560	powershell.exe
Token: SeTakeOwnershipPrivilege	4560	powershell.exe
Token: SeLoadDriverPrivilege	4560	powershell.exe
Token: SeSystemProfilePrivilege	4560	powershell.exe
Token: SeSystemtimePrivilege	4560	powershell.exe
Token: SeProfSingleProcessPrivilege	4560	powershell.exe
Token: SeIncBasePriorityPrivilege	4560	powershell.exe
Token: SeCreatePagefilePrivilege	4560	powershell.exe
Token: SeBackupPrivilege	4560	powershell.exe
Token: SeRestorePrivilege	4560	powershell.exe
Token: SeShutdownPrivilege	4560	powershell.exe
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeSystemEnvironmentPrivilege	4560	powershell.exe
Token: SeRemoteShutdownPrivilege	4560	powershell.exe
Token: SeUndockPrivilege	4560	powershell.exe
Token: SeManageVolumePrivilege	4560	powershell.exe
Token: 33	4560	powershell.exe
Token: 34	4560	powershell.exe
Token: 35	4560	powershell.exe
Token: 36	4560	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1472 wrote to memory of 700	1472	weave.exe	74
PID 1472 wrote to memory of 700	1472	weave.exe	74
PID 700 wrote to memory of 4560	700	cmd.exe	75
PID 700 wrote to memory of 4560	700	cmd.exe	75
PID 1472 wrote to memory of 3316	1472	weave.exe	77
PID 1472 wrote to memory of 3316	1472	weave.exe	77

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:1472
- 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:700
- - 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:4560
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:3316

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dj1kqkuc.yto.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/1472-0-0x00007FF6B3AA0000-0x00007FF6B4342000-memory.dmp

Filesize
8.6MB

Download
memory/1472-1-0x00007FFA3E748000-0x00007FFA3E74A000-memory.dmp

Filesize
8KB

Download
memory/1472-58-0x00007FF6B3AA0000-0x00007FF6B4342000-memory.dmp

Filesize
8.6MB

Download
memory/1472-53-0x00007FF6B3AA0000-0x00007FF6B4342000-memory.dmp

Filesize
8.6MB

Download
memory/4560-12-0x000001977EE90000-0x000001977EF06000-memory.dmp

Filesize
472KB

Download
memory/4560-9-0x000001977ECE0000-0x000001977ED02000-memory.dmp

Filesize
136KB

Download
memory/4560-8-0x00007FFA3E6A0000-0x00007FFA3E87B000-memory.dmp

Filesize
1.9MB

Download
memory/4560-25-0x00007FFA3E6A0000-0x00007FFA3E87B000-memory.dmp

Filesize
1.9MB

Download
memory/4560-48-0x00007FFA3E6A0000-0x00007FFA3E87B000-memory.dmp

Filesize
1.9MB

Download
memory/4560-52-0x00007FFA3E6A0000-0x00007FFA3E87B000-memory.dmp

Filesize
1.9MB

Download
memory/4560-7-0x00007FFA3E6A0000-0x00007FFA3E87B000-memory.dmp

Filesize
1.9MB

Download
memory/4560-6-0x00007FFA3E6A0000-0x00007FFA3E87B000-memory.dmp

Filesize
1.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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