735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf

General

Target

735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
Size

945KB
MD5

bbc4ea4288bb2ff094433b18d8468a8d
SHA1

72d8b5810a3b773bf11946061ad90a47a0558826
SHA256

735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf
SHA512

c69a8a9ca5acea5a50d8ce9fea0e3e8146fcc34c97937ffffc44dc119f30f88db9ccd22c1c79f761d102fe75e220c1dfe2fc8bbcac7cb2ff5b4a70d6a222f006

Score

9^/10

evasion upx

Malware Config

Signatures

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

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2932-4-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral2/memory/3588-17-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral2/memory/2932-19-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx

Drops startup file 2 IoCs

Processes:

735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsDefender.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsDefender.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Wine	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

pid process

4012 735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

description	pid	process	target process
PID 4012 set thread context of 2932	4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

pid	process
4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.execalc.exe

pid process

4012 735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
3588 calc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe

description	pid	process	target process
PID 4012 wrote to memory of 2932	4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
PID 4012 wrote to memory of 2932	4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
PID 4012 wrote to memory of 2932	4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
PID 4012 wrote to memory of 2932	4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
PID 4012 wrote to memory of 2932	4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
PID 4012 wrote to memory of 2932	4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
PID 4012 wrote to memory of 2932	4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
PID 4012 wrote to memory of 2932	4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
PID 2932 wrote to memory of 3588	2932	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	calc.exe
PID 2932 wrote to memory of 3588	2932	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	calc.exe
PID 2932 wrote to memory of 3588	2932	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	calc.exe
PID 2932 wrote to memory of 3588	2932	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe	calc.exe

C:\Users\Admin\AppData\Local\Temp\735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
"C:\Users\Admin\AppData\Local\Temp\735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe"
1⤵
- Drops startup file
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4012
- C:\Users\Admin\AppData\Local\Temp\735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
  "C:\Users\Admin\AppData\Local\Temp\735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2932
- - C:\Windows\SysWOW64\calc.exe
    calc.exe
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:3588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2932-19-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/2932-4-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/2932-5-0x0000000000C94870-mapping.dmp

Download
memory/3588-18-0x0000000000000000-mapping.dmp

Download
memory/3588-17-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/4012-10-0x0000000004BC0000-0x0000000004BC1000-memory.dmp

Filesize
4KB

Download
memory/4012-8-0x0000000004C20000-0x0000000004C21000-memory.dmp

Filesize
4KB

Download
memory/4012-9-0x0000000004C10000-0x0000000004C13000-memory.dmp

Filesize
12KB

Download
memory/4012-3-0x0000000004AA0000-0x0000000004AA1000-memory.dmp

Filesize
4KB

Download
memory/4012-11-0x0000000004BA0000-0x0000000004BA1000-memory.dmp

Filesize
4KB

Download
memory/4012-12-0x0000000004C00000-0x0000000004C01000-memory.dmp

Filesize
4KB

Download
memory/4012-13-0x0000000004BB0000-0x0000000004BB1000-memory.dmp

Filesize
4KB

Download
memory/4012-14-0x0000000004BD0000-0x0000000004BD1000-memory.dmp

Filesize
4KB

Download
memory/4012-15-0x0000000004BF0000-0x0000000004BF1000-memory.dmp

Filesize
4KB

Download
memory/4012-16-0x0000000004C30000-0x0000000004C31000-memory.dmp

Filesize
4KB

Download
memory/4012-7-0x0000000000401000-0x0000000000418000-memory.dmp

Filesize
92KB

Download
memory/4012-6-0x0000000077AD4000-0x0000000077AD5000-memory.dmp

Filesize
4KB

Download
memory/4012-2-0x00000000042A0000-0x00000000042A1000-memory.dmp

Filesize
4KB

Download

pid	process
4012	735fd161c81fc144eb99d411ab096c6d21a844a8b9747006e9a2bbac729baadf.exe
3588	calc.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads