cryptbot | 39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf

General

Target

39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe
Size

6.3MB
MD5

d048c147fe730a77e30b2efd85ebfe97
SHA1

febf2874b6fdc8a8fa7db8c524fe9d733cf6145b
SHA256

39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf
SHA512

f8f4830ff39cbcc3952a319fd4307c2f6bf268851f3f0cfa85af4071204232b196688eb3c91aff2b5982a368500b86092ce408a147f218264705dbf08f70c237
SSDEEP

98304:lLUGDK7kAZy3uo4AHV1Cs/6q+l35ZgqOM0E:vO7kQyeoBfxs+M0E

Score

10^/10

cryptbot discovery spyware stealer

Malware Config

Extracted

Family

cryptbot

C2

thirtvf13vs.top

analforeverlovyu.top

Attributes

url_path
/v1/upload.php

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
2816	service123.exe
2908	service123.exe
2128	service123.exe

Loads dropped DLL 5 IoCs

pid	Process
2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe
2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe
2816	service123.exe
2908	service123.exe
2128	service123.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2584	schtasks.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2816	2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe	31
PID 2704 wrote to memory of 2816	2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe	31
PID 2704 wrote to memory of 2816	2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe	31
PID 2704 wrote to memory of 2816	2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe	31
PID 2704 wrote to memory of 2584	2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe	32
PID 2704 wrote to memory of 2584	2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe	32
PID 2704 wrote to memory of 2584	2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe	32
PID 2704 wrote to memory of 2584	2704	39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe	32
PID 788 wrote to memory of 2908	788	taskeng.exe	36
PID 788 wrote to memory of 2908	788	taskeng.exe	36
PID 788 wrote to memory of 2908	788	taskeng.exe	36
PID 788 wrote to memory of 2908	788	taskeng.exe	36
PID 788 wrote to memory of 2128	788	taskeng.exe	37
PID 788 wrote to memory of 2128	788	taskeng.exe	37
PID 788 wrote to memory of 2128	788	taskeng.exe	37
PID 788 wrote to memory of 2128	788	taskeng.exe	37

C:\Users\Admin\AppData\Local\Temp\39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe
"C:\Users\Admin\AppData\Local\Temp\39ef51afa4b5a9f930af06bcb4bdf50e289b522c40888ff3015d9486b8b4cdcf.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Users\Admin\AppData\Local\Temp\service123.exe
  "C:\Users\Admin\AppData\Local\Temp\service123.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2816
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /tn "ServiceData4" /tr "C:\Users\Admin\AppData\Local\Temp\/service123.exe" /st 00:01 /du 9800:59 /sc once /ri 1 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2584

C:\Windows\system32\taskeng.exe
taskeng.exe {CC9CBF12-0005-415B-A5A8-F06B27863411} S-1-5-21-312935884-697965778-3955649944-1000:MXQFNXLT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:788
- C:\Users\Admin\AppData\Local\Temp\service123.exe
  C:\Users\Admin\AppData\Local\Temp\/service123.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2908
- C:\Users\Admin\AppData\Local\Temp\service123.exe
  C:\Users\Admin\AppData\Local\Temp\/service123.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2128-41-0x0000000000CE0000-0x0000000000CF1000-memory.dmp

Filesize
68KB

Download
memory/2704-0-0x0000000000400000-0x000000000106A000-memory.dmp

Filesize
12.4MB

Download
memory/2704-1-0x0000000000400000-0x000000000106A000-memory.dmp

Filesize
12.4MB

Download
memory/2704-12-0x0000000000400000-0x000000000106A000-memory.dmp

Filesize
12.4MB

Download
memory/2816-15-0x0000000000CE0000-0x0000000000CF1000-memory.dmp

Filesize
68KB

Download
memory/2816-16-0x0000000074860000-0x000000007499C000-memory.dmp

Filesize
1.2MB

Download
memory/2908-26-0x0000000000CE0000-0x0000000000CF1000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads