cryptbot | b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446

General

Target

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe
Size

2.7MB
MD5

331dcdc60c30bfb0e6caf4d5a2b13af0
SHA1

8791349b229c91fa0899cd0f669a9cc533aa4105
SHA256

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446
SHA512

c5408605dd1fdb1f34c64eb31ef0d86685c75ddca02f78bcb762c6c799885652b3d091133fca0b0e890b3f9d0a325621d82c75cdc6c35f48bc404be109ed12e9
SSDEEP

49152:P9eUwdL4wRqh7YqAVpymthcNRhuvo5NMAN7q4HmfT5RhJRr0UUK81Ezw6HdPd5is:85zgSt+svYNMAN7jOhJRDrwIdb

Score

10^/10

cryptbot discovery evasion spyware stealer themida trojan

Malware Config

Extracted

Family

cryptbot

C2

oct3m.top

oct3e.top

Signatures

CryptBot
CryptBot is a C++ stealer distributed widely in bundle with other software.
spyware stealer cryptbot
Cryptbot family
cryptbot
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.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:

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

696 cmd.exe

pid	process
696	cmd.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/2112-0-0x00000000010F0000-0x00000000017EE000-memory.dmp	themida
behavioral1/memory/2112-2-0x00000000010F0000-0x00000000017EE000-memory.dmp	themida
behavioral1/memory/2112-3-0x00000000010F0000-0x00000000017EE000-memory.dmp	themida
behavioral1/memory/2112-5-0x00000000010F0000-0x00000000017EE000-memory.dmp	themida
behavioral1/memory/2112-6-0x00000000010F0000-0x00000000017EE000-memory.dmp	themida
behavioral1/memory/2112-4-0x00000000010F0000-0x00000000017EE000-memory.dmp	themida
behavioral1/memory/2112-7-0x00000000010F0000-0x00000000017EE000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

pid process

2112 b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2112	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.execmd.exetimeout.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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:

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2200 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

pid process

2112 b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

pid	process
2200	timeout.exe

pid	process
2112	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.execmd.exe

description	pid	process	target process
PID 2112 wrote to memory of 696	2112	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe	cmd.exe
PID 2112 wrote to memory of 696	2112	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe	cmd.exe
PID 2112 wrote to memory of 696	2112	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe	cmd.exe
PID 2112 wrote to memory of 696	2112	b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe	cmd.exe
PID 696 wrote to memory of 2200	696	cmd.exe	timeout.exe
PID 696 wrote to memory of 2200	696	cmd.exe	timeout.exe
PID 696 wrote to memory of 2200	696	cmd.exe	timeout.exe
PID 696 wrote to memory of 2200	696	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe
"C:\Users\Admin\AppData\Local\Temp\b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.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
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\aBaRTJGLxQHy & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:696
- - C:\Windows\SysWOW64\timeout.exe
    timeout 4
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2200

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2112-0-0x00000000010F0000-0x00000000017EE000-memory.dmp

Filesize
7.0MB

Download
memory/2112-1-0x0000000077620000-0x0000000077622000-memory.dmp

Filesize
8KB

Download
memory/2112-2-0x00000000010F0000-0x00000000017EE000-memory.dmp

Filesize
7.0MB

Download
memory/2112-3-0x00000000010F0000-0x00000000017EE000-memory.dmp

Filesize
7.0MB

Download
memory/2112-5-0x00000000010F0000-0x00000000017EE000-memory.dmp

Filesize
7.0MB

Download
memory/2112-6-0x00000000010F0000-0x00000000017EE000-memory.dmp

Filesize
7.0MB

Download
memory/2112-4-0x00000000010F0000-0x00000000017EE000-memory.dmp

Filesize
7.0MB

Download
memory/2112-7-0x00000000010F0000-0x00000000017EE000-memory.dmp

Filesize
7.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads