cryptbot | 3678e658fdc8ef06809080bc210a3bce96157e1940fa9bd107759a448ff6b281

General

Target

4d50f5e9e375f71ff3ac1e806c60a728.exe
Size

2.6MB
MD5

4d50f5e9e375f71ff3ac1e806c60a728
SHA1

76c1a682a7661810b8a608cc91c67bfdd15933b5
SHA256

3678e658fdc8ef06809080bc210a3bce96157e1940fa9bd107759a448ff6b281
SHA512

9c8f5c3b3273ee7c9eb42af195d9fad98c1b2bfc8ea592e8e5c147cae082bd0609a5f31e7257721f68494ed205a02b4227870cec4e6934fa7868d5eead0bb770

Score

10^/10

cryptbot evasion spyware stealer themida trojan

Malware Config

Extracted

Family

cryptbot

C2

briymk62.top

Signatures

CryptBot
A C++ stealer distributed widely in bundle with other software.
spyware stealer cryptbot
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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:

4d50f5e9e375f71ff3ac1e806c60a728.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4d50f5e9e375f71ff3ac1e806c60a728.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4d50f5e9e375f71ff3ac1e806c60a728.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

972 cmd.exe

pid	process
972	cmd.exe

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1588-56-0x0000000001070000-0x0000000001759000-memory.dmp	themida
behavioral1/memory/1588-57-0x0000000001070000-0x0000000001759000-memory.dmp	themida
behavioral1/memory/1588-59-0x0000000001070000-0x0000000001759000-memory.dmp	themida
behavioral1/memory/1588-60-0x0000000001070000-0x0000000001759000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

4d50f5e9e375f71ff3ac1e806c60a728.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	4d50f5e9e375f71ff3ac1e806c60a728.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

4d50f5e9e375f71ff3ac1e806c60a728.exe

pid process

1588 4d50f5e9e375f71ff3ac1e806c60a728.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1588	4d50f5e9e375f71ff3ac1e806c60a728.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

4d50f5e9e375f71ff3ac1e806c60a728.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4d50f5e9e375f71ff3ac1e806c60a728.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4d50f5e9e375f71ff3ac1e806c60a728.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

564 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

4d50f5e9e375f71ff3ac1e806c60a728.exe

pid process

1588 4d50f5e9e375f71ff3ac1e806c60a728.exe

pid	process
564	timeout.exe

pid	process
1588	4d50f5e9e375f71ff3ac1e806c60a728.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

4d50f5e9e375f71ff3ac1e806c60a728.execmd.exe

description	pid	process	target process
PID 1588 wrote to memory of 972	1588	4d50f5e9e375f71ff3ac1e806c60a728.exe	cmd.exe
PID 1588 wrote to memory of 972	1588	4d50f5e9e375f71ff3ac1e806c60a728.exe	cmd.exe
PID 1588 wrote to memory of 972	1588	4d50f5e9e375f71ff3ac1e806c60a728.exe	cmd.exe
PID 1588 wrote to memory of 972	1588	4d50f5e9e375f71ff3ac1e806c60a728.exe	cmd.exe
PID 972 wrote to memory of 564	972	cmd.exe	timeout.exe
PID 972 wrote to memory of 564	972	cmd.exe	timeout.exe
PID 972 wrote to memory of 564	972	cmd.exe	timeout.exe
PID 972 wrote to memory of 564	972	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\4d50f5e9e375f71ff3ac1e806c60a728.exe
"C:\Users\Admin\AppData\Local\Temp\4d50f5e9e375f71ff3ac1e806c60a728.exe"
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\CIvlbMrPWY & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4d50f5e9e375f71ff3ac1e806c60a728.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:972
- - C:\Windows\SysWOW64\timeout.exe
    timeout 4
    3⤵
    - Delays execution with timeout.exe
    PID:564

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1588-55-0x0000000076371000-0x0000000076373000-memory.dmp

Filesize
8KB

Download
memory/1588-56-0x0000000001070000-0x0000000001759000-memory.dmp

Filesize
6.9MB

Download
memory/1588-57-0x0000000001070000-0x0000000001759000-memory.dmp

Filesize
6.9MB

Download
memory/1588-58-0x00000000773D0000-0x00000000773D2000-memory.dmp

Filesize
8KB

Download
memory/1588-59-0x0000000001070000-0x0000000001759000-memory.dmp

Filesize
6.9MB

Download
memory/1588-60-0x0000000001070000-0x0000000001759000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads