cryptbot | 51e9ccfd1c8ae13270052947f8dc6e3386c585bf733228a8dc0e028e1c31223f

General

Target

installer.exe
Size

2.7MB
MD5

a9a3893285e274d60a9bb5b85f4dfcc4
SHA1

960237e74a28393b0f906a46acffdb4d6160b763
SHA256

51e9ccfd1c8ae13270052947f8dc6e3386c585bf733228a8dc0e028e1c31223f
SHA512

b22237255cdcca7c9cdd1dd0664368a967b09ad672f57beb96891ab6abfd6bf4c2d7161f1f9e9bc468539811494c8fc1c6d6417c0b339c22fc90769addfa3bc0

Score

10^/10

cryptbot evasion spyware stealer themida trojan

Malware Config

Signatures

CryptBot
A C++ stealer distributed widely in bundle with other software.
spyware stealer cryptbot

evasion 4 IoCs

evasion.

evasion

Processes:

resource	yara_rule
behavioral1/memory/1964-56-0x0000000000C00000-0x00000000012EE000-memory.dmp	evasion
behavioral1/memory/1964-57-0x0000000000C00000-0x00000000012EE000-memory.dmp	evasion
behavioral1/memory/1964-59-0x0000000000C00000-0x00000000012EE000-memory.dmp	evasion
behavioral1/memory/1964-58-0x0000000000C00000-0x00000000012EE000-memory.dmp	evasion

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:

installer.exe

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

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

788 cmd.exe

pid	process
788	cmd.exe

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1964-56-0x0000000000C00000-0x00000000012EE000-memory.dmp	themida
behavioral1/memory/1964-57-0x0000000000C00000-0x00000000012EE000-memory.dmp	themida
behavioral1/memory/1964-59-0x0000000000C00000-0x00000000012EE000-memory.dmp	themida
behavioral1/memory/1964-58-0x0000000000C00000-0x00000000012EE000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

installer.exe

description ioc process

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

Processes:

installer.exe

pid process

1964 installer.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	installer.exe

pid	process
1964	installer.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:

installer.exe

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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

520 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

installer.exe

pid process

1964 installer.exe

pid	process
520	timeout.exe

pid	process
1964	installer.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

installer.execmd.exe

description	pid	process	target process
PID 1964 wrote to memory of 788	1964	installer.exe	cmd.exe
PID 1964 wrote to memory of 788	1964	installer.exe	cmd.exe
PID 1964 wrote to memory of 788	1964	installer.exe	cmd.exe
PID 1964 wrote to memory of 788	1964	installer.exe	cmd.exe
PID 788 wrote to memory of 520	788	cmd.exe	timeout.exe
PID 788 wrote to memory of 520	788	cmd.exe	timeout.exe
PID 788 wrote to memory of 520	788	cmd.exe	timeout.exe
PID 788 wrote to memory of 520	788	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\installer.exe
"C:\Users\Admin\AppData\Local\Temp\installer.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:1964

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\mxBRcXybcqwU & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\installer.exe"
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:788

C:\Windows\SysWOW64\timeout.exe
timeout 4
3⤵
- Delays execution with timeout.exe
PID:520

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/520-61-0x0000000000000000-mapping.dmp

Download
memory/788-60-0x0000000000000000-mapping.dmp

Download
memory/1964-55-0x0000000075981000-0x0000000075983000-memory.dmp

Filesize
8KB

Download
memory/1964-56-0x0000000000C00000-0x00000000012EE000-memory.dmp

Filesize
6.9MB

Download
memory/1964-57-0x0000000000C00000-0x00000000012EE000-memory.dmp

Filesize
6.9MB

Download
memory/1964-59-0x0000000000C00000-0x00000000012EE000-memory.dmp

Filesize
6.9MB

Download
memory/1964-58-0x0000000000C00000-0x00000000012EE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads