2a43c2d26e4a34e67016e6ec122c70ae2851112e07d1f8798a8dcf2af87e4eed

Analysis

max time kernel
50s
max time network
39s
platform
windows10-2004_x64
resource
win10v2004-20250313-en
resource tags

arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2025, 02:30

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General

Target

Hydrargyrum.harmless.exe
Size

3.6MB
MD5

e253841459b798a5ca861daaeb44ff5c
SHA1

9d4069fb41c3dfa9314ece82efde72d8602ce9b7
SHA256

d3b50942c8262e5bd658a3938e3218168adbfe86698a55bd02f6a94fd7afbbfe
SHA512

99d3328f52de8995467c32797ad81a8d37b93e814a535bffd617b5a8aed0a2412f1e037eb28f1d6e3777dfb1fed25429b2da2ae6dab1645dfce7cb792f9a11db
SSDEEP

49152:0hdgcpljaq6JfqRZBX8iYI9VwSUO+5+/uKLCsS7MSVQKpbfd56R0StwWkWo9Ck9B:0jpBqdqRLJZkdeSwSVQwf2x7KCKK

Score

9^/10

defense_evasion discovery themida trojan

Malware Config

Signatures

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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Hydrargyrum.harmless.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	Hydrargyrum.harmless.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Hydrargyrum.harmless.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/3040-0-0x0000000000400000-0x0000000000DF9000-memory.dmp	themida
behavioral2/memory/3040-3-0x0000000000400000-0x0000000000DF9000-memory.dmp	themida
behavioral2/memory/3040-2-0x0000000000400000-0x0000000000DF9000-memory.dmp	themida
behavioral2/memory/3040-4-0x0000000000400000-0x0000000000DF9000-memory.dmp	themida
behavioral2/memory/3040-5-0x0000000000400000-0x0000000000DF9000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_evasion trojan

System Information Discovery

T1082

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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3040	Hydrargyrum.harmless.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	Hydrargyrum.harmless.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3040	Hydrargyrum.harmless.exe
3040	Hydrargyrum.harmless.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	1008	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1008	AUDIODG.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3040	Hydrargyrum.harmless.exe

C:\Users\Admin\AppData\Local\Temp\Hydrargyrum.harmless.exe
"C:\Users\Admin\AppData\Local\Temp\Hydrargyrum.harmless.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
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:3040

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x498 0x49c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3040-0-0x0000000000400000-0x0000000000DF9000-memory.dmp

Filesize
10.0MB

Download
memory/3040-1-0x0000000077B74000-0x0000000077B76000-memory.dmp

Filesize
8KB

Download
memory/3040-3-0x0000000000400000-0x0000000000DF9000-memory.dmp

Filesize
10.0MB

Download
memory/3040-2-0x0000000000400000-0x0000000000DF9000-memory.dmp

Filesize
10.0MB

Download
memory/3040-4-0x0000000000400000-0x0000000000DF9000-memory.dmp

Filesize
10.0MB

Download
memory/3040-5-0x0000000000400000-0x0000000000DF9000-memory.dmp

Filesize
10.0MB

Download