6ad75992217a3b28bc5fe875016f8d13d83ac56730022b03341afb478179bbfa

Analysis

max time kernel
299s
max time network
254s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2024 21:06

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General

Target

YErb4fob3Zfa9s0ACYtpUHgyb.exe
Size

5.1MB
MD5

4eeb4851e21eb25d0b1532c75bc5d983
SHA1

c8c33cf9e2fa02402f06abd4d790e920146da60b
SHA256

6ad75992217a3b28bc5fe875016f8d13d83ac56730022b03341afb478179bbfa
SHA512

ca1d331175bd172811c255e98badd8244397b048454e736a94b4e2fd0cca4ab3455c3603a5953c3e26cec7493fdf23099126cd2808102c61d599d01d0ddc358e
SSDEEP

98304:dBb0vjPesuu2bphf6mXUljWBFAn29uzvBknCLpNoSm0fy5nq:/bATunfZXU9WB/9uzKny0q

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

Processes:

YErb4fob3Zfa9s0ACYtpUHgyb.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ YErb4fob3Zfa9s0ACYtpUHgyb.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	YErb4fob3Zfa9s0ACYtpUHgyb.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

Processes:

YErb4fob3Zfa9s0ACYtpUHgyb.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	YErb4fob3Zfa9s0ACYtpUHgyb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	YErb4fob3Zfa9s0ACYtpUHgyb.exe

Themida packer 9 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/396-0-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp	themida
behavioral1/memory/396-15-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp	themida
behavioral1/memory/396-17-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp	themida
behavioral1/memory/396-16-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp	themida
behavioral1/memory/396-18-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp	themida
behavioral1/memory/396-19-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp	themida
behavioral1/memory/396-20-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp	themida
behavioral1/memory/396-21-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp	themida
behavioral1/memory/396-22-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

YErb4fob3Zfa9s0ACYtpUHgyb.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA YErb4fob3Zfa9s0ACYtpUHgyb.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

YErb4fob3Zfa9s0ACYtpUHgyb.exe

pid process

396 YErb4fob3Zfa9s0ACYtpUHgyb.exe
Kills process with taskkill 3 IoCs
evasion

Processes:

taskkill.exetaskkill.exetaskkill.exe

pid process

2044 taskkill.exe
1560 taskkill.exe
2552 taskkill.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

YErb4fob3Zfa9s0ACYtpUHgyb.exe

pid process

396 YErb4fob3Zfa9s0ACYtpUHgyb.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

taskkill.exetaskkill.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 2552 taskkill.exe
Token: SeDebugPrivilege 2044 taskkill.exe
Token: SeDebugPrivilege 1560 taskkill.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	YErb4fob3Zfa9s0ACYtpUHgyb.exe

pid	process
396	YErb4fob3Zfa9s0ACYtpUHgyb.exe

pid	process
2044	taskkill.exe
1560	taskkill.exe
2552	taskkill.exe

pid	process
396	YErb4fob3Zfa9s0ACYtpUHgyb.exe

description	pid	process
Token: SeDebugPrivilege	2552	taskkill.exe
Token: SeDebugPrivilege	2044	taskkill.exe
Token: SeDebugPrivilege	1560	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

YErb4fob3Zfa9s0ACYtpUHgyb.execmd.execmd.execmd.exe

description	pid	process	target process
PID 396 wrote to memory of 2004	396	YErb4fob3Zfa9s0ACYtpUHgyb.exe	cmd.exe
PID 396 wrote to memory of 2004	396	YErb4fob3Zfa9s0ACYtpUHgyb.exe	cmd.exe
PID 2004 wrote to memory of 2552	2004	cmd.exe	taskkill.exe
PID 2004 wrote to memory of 2552	2004	cmd.exe	taskkill.exe
PID 396 wrote to memory of 2244	396	YErb4fob3Zfa9s0ACYtpUHgyb.exe	cmd.exe
PID 396 wrote to memory of 2244	396	YErb4fob3Zfa9s0ACYtpUHgyb.exe	cmd.exe
PID 2244 wrote to memory of 2044	2244	cmd.exe	taskkill.exe
PID 2244 wrote to memory of 2044	2244	cmd.exe	taskkill.exe
PID 396 wrote to memory of 968	396	YErb4fob3Zfa9s0ACYtpUHgyb.exe	cmd.exe
PID 396 wrote to memory of 968	396	YErb4fob3Zfa9s0ACYtpUHgyb.exe	cmd.exe
PID 968 wrote to memory of 1560	968	cmd.exe	taskkill.exe
PID 968 wrote to memory of 1560	968	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\YErb4fob3Zfa9s0ACYtpUHgyb.exe
"C:\Users\Admin\AppData\Local\Temp\YErb4fob3Zfa9s0ACYtpUHgyb.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 behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:396

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c taskkill /f /im KsDumperClient.exe >nul 2>&1
2⤵
- Suspicious use of WriteProcessMemory
PID:2004

C:\Windows\system32\taskkill.exe
taskkill /f /im KsDumperClient.exe
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2552

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c taskkill /f /im KsDumper.exe >nul 2>&1
2⤵
- Suspicious use of WriteProcessMemory
PID:2244

C:\Windows\system32\taskkill.exe
taskkill /f /im KsDumper.exe
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2044

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c taskkill /f /im HTTPDebuggerUI.exe >nul 2>&1
2⤵
- Suspicious use of WriteProcessMemory
PID:968

C:\Windows\system32\taskkill.exe
taskkill /f /im HTTPDebuggerUI.exe
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1560

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4356,i,15142778360084620907,1763097090506261076,262144 --variations-seed-version --mojo-platform-channel-handle=4460 /prefetch:8
1⤵
PID:2392

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/396-0-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp

Filesize
13.8MB

Download
memory/396-1-0x00007FFB18264000-0x00007FFB18265000-memory.dmp

Filesize
4KB

Download
memory/396-3-0x00007FFB18200000-0x00007FFB184C9000-memory.dmp

Filesize
2.8MB

Download
memory/396-4-0x00007FFB18200000-0x00007FFB184C9000-memory.dmp

Filesize
2.8MB

Download
memory/396-5-0x00007FFB18200000-0x00007FFB184C9000-memory.dmp

Filesize
2.8MB

Download
memory/396-14-0x00007FFB18200000-0x00007FFB184C9000-memory.dmp

Filesize
2.8MB

Download
memory/396-7-0x0000000180000000-0x0000000180020000-memory.dmp

Filesize
128KB

Download
memory/396-6-0x0000000180000000-0x0000000180020000-memory.dmp

Filesize
128KB

Download
memory/396-2-0x00007FFB18200000-0x00007FFB184C9000-memory.dmp

Filesize
2.8MB

Download
memory/396-15-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp

Filesize
13.8MB

Download
memory/396-17-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp

Filesize
13.8MB

Download
memory/396-16-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp

Filesize
13.8MB

Download
memory/396-18-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp

Filesize
13.8MB

Download
memory/396-19-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp

Filesize
13.8MB

Download
memory/396-20-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp

Filesize
13.8MB

Download
memory/396-21-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp

Filesize
13.8MB

Download
memory/396-22-0x00007FF679C40000-0x00007FF67AA06000-memory.dmp

Filesize
13.8MB

Download
memory/396-23-0x00007FFB18200000-0x00007FFB184C9000-memory.dmp

Filesize
2.8MB

Download