e394b31b5d3530ba36cc348fab8ddf79cbe635b81c7991e93d1dec14c7076a68

General

Target

updater.exe
Size

6.1MB
MD5

be00675212ecb96e7603354c84387ba0
SHA1

ee4bfb93dea04a35e15e95dbcb096f66ffa8f907
SHA256

e394b31b5d3530ba36cc348fab8ddf79cbe635b81c7991e93d1dec14c7076a68
SHA512

bd0c5c530d162c70a440a471bad345c2d1d94caf6cfeb3c3a0ae38805eb68664a8a8d349b6d867747bcdc2416da39a16efd36f29ae83f04314dc06c4097d73b4
SSDEEP

98304:gJIMtJix6CC7mR6jatnIC6JCfoYFu/I36GU8seJBHh9NwQYENY1yIXXrjmjyirxc:3f3C7mRP9hPfXE/5GUJWKQKFrj0rxc

Score

9^/10

evasion 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__	updater.exe

Downloads MZ/PE file

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	updater.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	updater.exe

Executes dropped EXE 1 IoCs

pid	Process
1484	loader.exe

Loads dropped DLL 1 IoCs

pid	Process
2136	updater.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2136-8-0x0000000140000000-0x0000000140E52000-memory.dmp	themida
behavioral1/memory/2136-9-0x0000000140000000-0x0000000140E52000-memory.dmp	themida
behavioral1/files/0x00070000000186ca-15.dat	themida
behavioral1/memory/1484-20-0x0000000140000000-0x0000000143835000-memory.dmp	themida
behavioral1/memory/2136-22-0x0000000140000000-0x0000000140E52000-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	updater.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2136	updater.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\silence\loader.exe	updater.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2136	updater.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2136	updater.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 1484	2136	updater.exe	32
PID 2136 wrote to memory of 1484	2136	updater.exe	32
PID 2136 wrote to memory of 1484	2136	updater.exe	32

C:\Users\Admin\AppData\Local\Temp\updater.exe
"C:\Users\Admin\AppData\Local\Temp\updater.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Program Files\silence\loader.exe
  "C:\Program Files\silence\loader.exe"
  2⤵
  - Executes dropped EXE
  PID:1484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Program Files\silence\loader.exe

Filesize
22.3MB

MD5
dbdeb8bc480328e7d0d8f452f15ed16b

SHA1
c51d9a1f5856084506dd9d3c4f44e9dc25fd245c

SHA256
31758e4007eaa49141cf85318aaad951b3b1478e0bf921074ebf2e53648a7b26

SHA512
676d3443945b8edac74b869be23d3e300d5f5596f2a6a977ed14d35753e8e8889aec42d3ef6db876e268a551530d0c63b1782f16fcfcbe67a24ce8eac7064728

Download Submit
memory/1484-20-0x0000000140000000-0x0000000143835000-memory.dmp

Filesize
56.2MB

Download
memory/2136-5-0x000007FEFD5C0000-0x000007FEFD62C000-memory.dmp

Filesize
432KB

Download
memory/2136-10-0x000007FEFD5C0000-0x000007FEFD62C000-memory.dmp

Filesize
432KB

Download
memory/2136-0-0x0000000140000000-0x0000000140E52000-memory.dmp

Filesize
14.3MB

Download
memory/2136-4-0x000007FEFD5C0000-0x000007FEFD62C000-memory.dmp

Filesize
432KB

Download
memory/2136-7-0x000007FEFD5C0000-0x000007FEFD62C000-memory.dmp

Filesize
432KB

Download
memory/2136-8-0x0000000140000000-0x0000000140E52000-memory.dmp

Filesize
14.3MB

Download
memory/2136-9-0x0000000140000000-0x0000000140E52000-memory.dmp

Filesize
14.3MB

Download
memory/2136-3-0x000007FEFD5C0000-0x000007FEFD62C000-memory.dmp

Filesize
432KB

Download
memory/2136-11-0x0000000140000000-0x0000000140E52000-memory.dmp

Filesize
14.3MB

Download
memory/2136-12-0x000007FEFD5D3000-0x000007FEFD5D4000-memory.dmp

Filesize
4KB

Download
memory/2136-2-0x000007FEFD5C0000-0x000007FEFD62C000-memory.dmp

Filesize
432KB

Download
memory/2136-16-0x000007FEFD5C0000-0x000007FEFD62C000-memory.dmp

Filesize
432KB

Download
memory/2136-19-0x000000001E4D0000-0x0000000021D05000-memory.dmp

Filesize
56.2MB

Download
memory/2136-1-0x000007FEFD5D3000-0x000007FEFD5D4000-memory.dmp

Filesize
4KB

Download
memory/2136-22-0x0000000140000000-0x0000000140E52000-memory.dmp

Filesize
14.3MB

Download
memory/2136-23-0x000007FEFD5C0000-0x000007FEFD62C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads