bef628b23396d36849beac1bf633859d02f82ae9dc877281862b7e9e85148ecd

Analysis

max time kernel
141s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
24/05/2023, 19:03

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General

Target

M7R40729.exe
Size

7.6MB
MD5

7407fd99ee1940051b4f543656ea9b0a
SHA1

7149b25db501b75111ac77fe4bcfe6915058757a
SHA256

bef628b23396d36849beac1bf633859d02f82ae9dc877281862b7e9e85148ecd
SHA512

804a257e128f54d5febaca7424f308403e092f773119075270b89d8721e9cc91e3b7adc402ad9a9fbb252b5af250745d2f6a34f523f30b1f08c212aea0e5b75d
SSDEEP

98304:g08oqEGSxQo0nYD20QB/2IuD4fb9e9z2FkZgFkrSyt85ZOnhAug8HrtqA:JnZr0YyG25eIFkKFFZ18H4A

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__	M7R40729.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	M7R40729.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	M7R40729.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Control Panel\International\Geo\Nation	M7R40729.exe

Themida packer 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/1224-54-0x000000013F1A0000-0x000000013FE8A000-memory.dmp	themida
behavioral1/memory/1224-55-0x000000013F1A0000-0x000000013FE8A000-memory.dmp	themida
behavioral1/memory/1224-56-0x000000013F1A0000-0x000000013FE8A000-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	M7R40729.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1224	M7R40729.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1808	1224	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1224	M7R40729.exe
1224	M7R40729.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1224	M7R40729.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 1808	1224	M7R40729.exe	29
PID 1224 wrote to memory of 1808	1224	M7R40729.exe	29
PID 1224 wrote to memory of 1808	1224	M7R40729.exe	29

C:\Users\Admin\AppData\Local\Temp\M7R40729.exe
"C:\Users\Admin\AppData\Local\Temp\M7R40729.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1224 -s 352
  2⤵
  - Program crash
  PID:1808

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1224-54-0x000000013F1A0000-0x000000013FE8A000-memory.dmp

Filesize
12.9MB

Download
memory/1224-55-0x000000013F1A0000-0x000000013FE8A000-memory.dmp

Filesize
12.9MB

Download
memory/1224-56-0x000000013F1A0000-0x000000013FE8A000-memory.dmp

Filesize
12.9MB

Download