cryptbot | 314259cc43c8619b5f8e1ec548b34b64d6b8084342cdd6d8a970718c2d791da8

General

Target

sample.exe
Size

2.6MB
MD5

35eb63390faa38437c456a1966d2e51a
SHA1

0138a5c885e85ab7960f681f94c552f1cd2b45e9
SHA256

314259cc43c8619b5f8e1ec548b34b64d6b8084342cdd6d8a970718c2d791da8
SHA512

8abef3dde447c025aa69b1524867513a0ecca523583098407bc18f6462acfa38e6e06d621c1943a6c1f6d88030edfdf71c48c2805fa0f5403183bab22c370048
SSDEEP

49152:LxgCKGJaUFxFwTkhnCEtG0vHBsH0PlXSUYo0rI8Jc+UDQ5tBpOTT0cAalxRm:LxLXJtxmTOtNvC/nrhYUrB4TT0chx

Score

10^/10

cryptbot evasion spyware stealer themida trojan

Malware Config

Extracted

Family

cryptbot

C2

hevbaw12.top

morgki01.top

Attributes

payload_url
http://kyvihm01.top/download.php?file=brunei.exe

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 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

sample.exe

description ioc process

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

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

sample.exe

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

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1524 cmd.exe

pid	process
1524	cmd.exe

Themida packer 6 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1668-54-0x00000000009C0000-0x00000000010A4000-memory.dmp	themida
behavioral1/memory/1668-55-0x00000000009C0000-0x00000000010A4000-memory.dmp	themida
behavioral1/memory/1668-56-0x00000000009C0000-0x00000000010A4000-memory.dmp	themida
behavioral1/memory/1668-57-0x00000000009C0000-0x00000000010A4000-memory.dmp	themida
behavioral1/memory/1668-58-0x00000000009C0000-0x00000000010A4000-memory.dmp	themida
behavioral1/memory/1668-59-0x00000000009C0000-0x00000000010A4000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

sample.exe

description ioc process

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

Processes:

sample.exe

pid process

1668 sample.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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

pid	process
1668	sample.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:

sample.exe

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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1080 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

sample.exe

pid process

1668 sample.exe

pid	process
1080	timeout.exe

pid	process
1668	sample.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

sample.execmd.exe

description	pid	process	target process
PID 1668 wrote to memory of 1524	1668	sample.exe	cmd.exe
PID 1668 wrote to memory of 1524	1668	sample.exe	cmd.exe
PID 1668 wrote to memory of 1524	1668	sample.exe	cmd.exe
PID 1668 wrote to memory of 1524	1668	sample.exe	cmd.exe
PID 1524 wrote to memory of 1080	1524	cmd.exe	timeout.exe
PID 1524 wrote to memory of 1080	1524	cmd.exe	timeout.exe
PID 1524 wrote to memory of 1080	1524	cmd.exe	timeout.exe
PID 1524 wrote to memory of 1080	1524	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.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
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1668

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\PuhtVjrlpA & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\sample.exe"
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1524

C:\Windows\SysWOW64\timeout.exe
timeout 4
3⤵
- Delays execution with timeout.exe
PID:1080

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

3

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

4

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1668-54-0x00000000009C0000-0x00000000010A4000-memory.dmp

Filesize
6.9MB

Download
memory/1668-55-0x00000000009C0000-0x00000000010A4000-memory.dmp

Filesize
6.9MB

Download
memory/1668-56-0x00000000009C0000-0x00000000010A4000-memory.dmp

Filesize
6.9MB

Download
memory/1668-57-0x00000000009C0000-0x00000000010A4000-memory.dmp

Filesize
6.9MB

Download
memory/1668-58-0x00000000009C0000-0x00000000010A4000-memory.dmp

Filesize
6.9MB

Download
memory/1668-59-0x00000000009C0000-0x00000000010A4000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads