cryptbot | a74f7f37ceedc57d0b8024d1e92efd40b023f8fce090dc80853f9ba88f61e7bb

General

Target
5eadc3d4c02b8b1ea765adca519d9031.exe
Size 742KB
Sample210504-rmtelnxlsx
SHA256 a74f7f37ceedc57d0b8024d1e92efd40b023f8fce090dc80853f9ba88f61e7bb
MD5 5eadc3d4c02b8b1ea765adca519d9031
SHA1 5729f9d4549a3dc388dfd17470279377a9e1692c
SHA512 5f54548e44c2db3defa159003ae63cf52516b2be41a4582f932f898784f14a3699af1952db4c43b153f5b4e71b6864bd4696952fa4c4a319235e7e5d70228eda
MD5 SHA1 SHA512

Score

10^/10

cryptbot discovery spyware stealer

Malware Config

Extracted

Family

cryptbot

C2

jusvyg72.top
morioa07.top

Signatures

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

CryptBot Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3724-114-0x0000000002500000-0x00000000025DF000-memory.dmp	family_cryptbot
behavioral2/memory/3724-115-0x0000000000400000-0x00000000008B2000-memory.dmp	family_cryptbot

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
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 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	5eadc3d4c02b8b1ea765adca519d9031.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5eadc3d4c02b8b1ea765adca519d9031.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1352	timeout.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3724	5eadc3d4c02b8b1ea765adca519d9031.exe
3724	5eadc3d4c02b8b1ea765adca519d9031.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3724 wrote to memory of 3548	3724	5eadc3d4c02b8b1ea765adca519d9031.exe	79
PID 3724 wrote to memory of 3548	3724	5eadc3d4c02b8b1ea765adca519d9031.exe	79
PID 3724 wrote to memory of 3548	3724	5eadc3d4c02b8b1ea765adca519d9031.exe	79
PID 3548 wrote to memory of 1352	3548	cmd.exe	81
PID 3548 wrote to memory of 1352	3548	cmd.exe	81
PID 3548 wrote to memory of 1352	3548	cmd.exe	81

C:\Users\Admin\AppData\Local\Temp\5eadc3d4c02b8b1ea765adca519d9031.exe
"C:\Users\Admin\AppData\Local\Temp\5eadc3d4c02b8b1ea765adca519d9031.exe"
1⤵
- Checks processor information in registry
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\NxnMdZwwqkVQ & timeout 3 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5eadc3d4c02b8b1ea765adca519d9031.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3548
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1352

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3724-114-0x0000000002500000-0x00000000025DF000-memory.dmp

Download

memory/3724-115-0x0000000000400000-0x00000000008B2000-memory.dmp