cryptbot | 4040ecc69ab01468503aed1363fdd2fc15d0fc5ca3aaf306bb860adf4866f1de

General

Target
SetupFile.sfx.exe
Size 4.3MB
Sample221220-tra3padd5s
SHA256 4040ecc69ab01468503aed1363fdd2fc15d0fc5ca3aaf306bb860adf4866f1de
MD5 fc8ff4f546def0e53e4a1a181791b252
SHA1 fcbcf6e9c72d9fe9f9befcc041668abfe6e2af5b
SHA512 ee5212fa31184c0fa81b6ad3fa4fafc1309791fbf38d9a7b1da6d967a0954fc321f8bd93907c1612e3a899eb7116ff9766fdeb4ae199f0e4bb4dcee5b3771f0a
SSDEEP 98304:tvsfCxtoT1+vSpV9HYwAUWhlyt5qqDDyJYBgCDIv8Ln:iCxtgdpzVrg8AqDDwMIv4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

cryptbot discovery spyware stealer

Malware Config

Extracted

Family

cryptbot

C2

http://wuqewl15.top/gate.php

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
2036	SetupFile.exe
4952	mchost.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	SetupFile.sfx.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	SetupFile.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	SetupFile.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum	SetupFile.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 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	SetupFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	SetupFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	SetupFile.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1900	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3632	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2036	SetupFile.exe
2036	SetupFile.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 2036	4800	SetupFile.sfx.exe	80
PID 4800 wrote to memory of 2036	4800	SetupFile.sfx.exe	80
PID 4800 wrote to memory of 2036	4800	SetupFile.sfx.exe	80
PID 2036 wrote to memory of 2380	2036	SetupFile.exe	82
PID 2036 wrote to memory of 2380	2036	SetupFile.exe	82
PID 2036 wrote to memory of 2380	2036	SetupFile.exe	82
PID 2380 wrote to memory of 1900	2380	cmd.exe	84
PID 2380 wrote to memory of 1900	2380	cmd.exe	84
PID 2380 wrote to memory of 1900	2380	cmd.exe	84
PID 2036 wrote to memory of 3956	2036	SetupFile.exe	89
PID 2036 wrote to memory of 3956	2036	SetupFile.exe	89
PID 2036 wrote to memory of 3956	2036	SetupFile.exe	89
PID 3956 wrote to memory of 3632	3956	cmd.exe	90
PID 3956 wrote to memory of 3632	3956	cmd.exe	90
PID 3956 wrote to memory of 3632	3956	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\SetupFile.sfx.exe
"C:\Users\Admin\AppData\Local\Temp\SetupFile.sfx.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\SetupFile.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\SetupFile.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Maps connected drives based on registry
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2036
- - C:\Windows\SysWOW64\cmd.exe
    /C schtasks /create /tn \Mozilla\lasqay /tr """"C:\Users\Admin\AppData\Roaming\xxllfcssya\mchost.exe""" """C:\Users\Admin\AppData\Roaming\xxllfcssya\mchost.chm"""" /du 9700:20 /sc once /st 00:05 /ri 1 /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2380
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /tn \Mozilla\lasqay /tr """"C:\Users\Admin\AppData\Roaming\xxllfcssya\mchost.exe""" """C:\Users\Admin\AppData\Roaming\xxllfcssya\mchost.chm"""" /du 9700:20 /sc once /st 00:05 /ri 1 /f
      4⤵
      Creates scheduled task(s)
      PID:1900
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout -t 5 && del "C:\Users\Admin\AppData\Local\Temp\RarSFX0\SetupFile.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3956
  - - C:\Windows\SysWOW64\timeout.exe
      timeout -t 5
      4⤵
      Delays execution with timeout.exe
      PID:3632

C:\Users\Admin\AppData\Roaming\xxllfcssya\mchost.exe
C:\Users\Admin\AppData\Roaming\xxllfcssya\mchost.exe "C:\Users\Admin\AppData\Roaming\xxllfcssya\mchost.chm"
1⤵
- Executes dropped EXE
PID:4952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

SetupFile.exe

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\SetupFile.exe
Size 324.9MB
SHA256 b2a8fa38e5ddd52479c75aca7d081fd5afffbc4a60fe265933bd77e30a1124ae
MD5 ac1006db54f9e976d18d0af2320bf3b7
SHA1 10fe60ec9be197ccf2a2d5d1ca0e465d638de7b6
SHA512 42a88be029d85540ce46efb90bbc0af7ded37b28a2486ffc3623f19e078296e06ecc7760b757daac06230e4985a10680a4255712ef0166d77364a44a1c68a01c
SSDEEP 98304:ihAgE2cSRIzyhiN3G8lRZOeDbWggmWNxJ7/nATC4K7XsWkkj:d2PKzyhiN3GwCmbWggp3JzATC4C8W
MD5 SHA1 SHA512 SSDEEP

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SetupFile.exe

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\SetupFile.exe
Size 324.9MB
SHA256 b2a8fa38e5ddd52479c75aca7d081fd5afffbc4a60fe265933bd77e30a1124ae
MD5 ac1006db54f9e976d18d0af2320bf3b7
SHA1 10fe60ec9be197ccf2a2d5d1ca0e465d638de7b6
SHA512 42a88be029d85540ce46efb90bbc0af7ded37b28a2486ffc3623f19e078296e06ecc7760b757daac06230e4985a10680a4255712ef0166d77364a44a1c68a01c
SSDEEP 98304:ihAgE2cSRIzyhiN3G8lRZOeDbWggmWNxJ7/nATC4K7XsWkkj:d2PKzyhiN3GwCmbWggp3JzATC4C8W
MD5 SHA1 SHA512 SSDEEP

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mchost.chm

Path C:\Users\Admin\AppData\Roaming\xxllfcssya\mchost.chm
Size 172KB
SHA256 bf431dfaf39b3daa481b16a9593993d3a05e08564bf3b0fbca183d3e6c7ffd86
MD5 96907358470716ecd839c83cbd2bd71c
SHA1 0e68ba16a07d9bb258e871360602ac86cf807e9a
SHA512 cbecc8ad928b2c9ff9d7b121610712f7bc4d9f01b1b14e4f198329ba2a14108196a7c5b6bda70a9939583543f3bffda31a9842d1dccf7f26491fa7226846eeb1
SSDEEP 1536:w5eO5/YeaCQaawN1uw9acOiEuhTsj0y+f9TXssxi/OtUxbNRHx9:aQ7m1ac3g1NRH3
MD5 SHA1 SHA512 SSDEEP

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mchost.exe

Path C:\Users\Admin\AppData\Roaming\xxllfcssya\mchost.exe
Size 872KB
SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
MD5 c56b5f0201a3b3de53e561fe76912bfd
SHA1 2a4062e10a5de813f5688221dbeb3f3ff33eb417
SHA512 195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c
SSDEEP 12288:6pVWeOV7GtINsegA/hMyyzlcqikvAfcN9b2MyZa31twoPTdFxgawV2M01:6T3E53Myyzl0hMf1tr7Caw8M01
MD5 SHA1 SHA512 SSDEEP

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memory/2036-136-0x0000000000A70000-0x0000000000B48000-memory.dmp

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memory/2036-137-0x0000000000A70000-0x0000000000B48000-memory.dmp

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memory/2036-139-0x0000000000A70000-0x0000000000B48000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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