cryptbot | 07efd513a02e8c30296f7b73488d9a74796849787df14af028266cd79c89d51f

Analysis

max time kernel
103s
max time network
147s
platform
windows10_x64
resource
win10v20210408
submitted
27/07/2021, 16:06

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General

Target
3aa1f98b275f4e2d8febb9e4478c5524.exe
Size 758KB
Sample210727-57ev81dlk6
SHA256 07efd513a02e8c30296f7b73488d9a74796849787df14af028266cd79c89d51f
MD5 3aa1f98b275f4e2d8febb9e4478c5524
SHA1 112cdacb64629da494eee7cac8b3a7b606e78bfe
SHA512 b7ca79b24281d0b94668ec8812a725f5c084efd9901c353aafd51d76055e708bc66302367c0b4ebb4546b4f314983bb6160a5ba507b4601513d19e8aa6b11130
MD5 SHA1 SHA512

Score

10^/10

cryptbot discovery spyware stealer suricata

Malware Config

Extracted

Family

cryptbot

ewaisg12.top
morvay01.top

Attributes

payload_url
http://winezo01.top/download.php?file=lv.exe

Signatures

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

CryptBot Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1096-114-0x0000000002220000-0x0000000002301000-memory.dmp	family_cryptbot
behavioral2/memory/1096-115-0x0000000000400000-0x00000000004E5000-memory.dmp	family_cryptbot

suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata

Blocklisted process makes network request 5 IoCs

flow	pid	Process
38	472	WScript.exe
40	472	WScript.exe
42	472	WScript.exe
44	472	WScript.exe
46	2608	rundll32.exe

Downloads MZ/PE file

Executes dropped EXE 5 IoCs

pid	Process
3600	cKTBdb.exe
2112	4.exe
492	vpn.exe
2304	SmartClock.exe
696	nsawckkurvpr.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SmartClock.lnk	4.exe

Loads dropped DLL 2 IoCs

pid	Process
3600	cKTBdb.exe
2608	rundll32.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
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
22	ip-api.com

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\foler\olader\acppage.dll	cKTBdb.exe
File created	C:\Program Files (x86)\foler\olader\adprovider.dll	cKTBdb.exe
File created	C:\Program Files (x86)\foler\olader\acledit.dll	cKTBdb.exe
File created	C:\PROGRA~3\Jvgzbfh.tmp	rundll32.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 4 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	vpn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vpn.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	3aa1f98b275f4e2d8febb9e4478c5524.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3aa1f98b275f4e2d8febb9e4478c5524.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2704	timeout.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	vpn.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	WScript.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	WScript.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2304	SmartClock.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1096	3aa1f98b275f4e2d8febb9e4478c5524.exe
1096	3aa1f98b275f4e2d8febb9e4478c5524.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 1196	1096	3aa1f98b275f4e2d8febb9e4478c5524.exe	78
PID 1096 wrote to memory of 1196	1096	3aa1f98b275f4e2d8febb9e4478c5524.exe	78
PID 1096 wrote to memory of 1196	1096	3aa1f98b275f4e2d8febb9e4478c5524.exe	78
PID 1196 wrote to memory of 3600	1196	cmd.exe	80
PID 1196 wrote to memory of 3600	1196	cmd.exe	80
PID 1196 wrote to memory of 3600	1196	cmd.exe	80
PID 3600 wrote to memory of 2112	3600	cKTBdb.exe	81
PID 3600 wrote to memory of 2112	3600	cKTBdb.exe	81
PID 3600 wrote to memory of 2112	3600	cKTBdb.exe	81
PID 3600 wrote to memory of 492	3600	cKTBdb.exe	82
PID 3600 wrote to memory of 492	3600	cKTBdb.exe	82
PID 3600 wrote to memory of 492	3600	cKTBdb.exe	82
PID 1096 wrote to memory of 3952	1096	3aa1f98b275f4e2d8febb9e4478c5524.exe	83
PID 1096 wrote to memory of 3952	1096	3aa1f98b275f4e2d8febb9e4478c5524.exe	83
PID 1096 wrote to memory of 3952	1096	3aa1f98b275f4e2d8febb9e4478c5524.exe	83
PID 3952 wrote to memory of 2704	3952	cmd.exe	85
PID 3952 wrote to memory of 2704	3952	cmd.exe	85
PID 3952 wrote to memory of 2704	3952	cmd.exe	85
PID 2112 wrote to memory of 2304	2112	4.exe	86
PID 2112 wrote to memory of 2304	2112	4.exe	86
PID 2112 wrote to memory of 2304	2112	4.exe	86
PID 492 wrote to memory of 696	492	vpn.exe	87
PID 492 wrote to memory of 696	492	vpn.exe	87
PID 492 wrote to memory of 696	492	vpn.exe	87
PID 492 wrote to memory of 904	492	vpn.exe	88
PID 492 wrote to memory of 904	492	vpn.exe	88
PID 492 wrote to memory of 904	492	vpn.exe	88
PID 696 wrote to memory of 2608	696	nsawckkurvpr.exe	89
PID 696 wrote to memory of 2608	696	nsawckkurvpr.exe	89
PID 696 wrote to memory of 2608	696	nsawckkurvpr.exe	89
PID 492 wrote to memory of 472	492	vpn.exe	90
PID 492 wrote to memory of 472	492	vpn.exe	90
PID 492 wrote to memory of 472	492	vpn.exe	90

C:\Users\Admin\AppData\Local\Temp\3aa1f98b275f4e2d8febb9e4478c5524.exe
"C:\Users\Admin\AppData\Local\Temp\3aa1f98b275f4e2d8febb9e4478c5524.exe"
1⤵
- Checks processor information in registry
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1096
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\cKTBdb.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1196
- - C:\Users\Admin\AppData\Local\Temp\cKTBdb.exe
    "C:\Users\Admin\AppData\Local\Temp\cKTBdb.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:3600
  - - C:\Users\Admin\AppData\Local\Temp\New Feature\4.exe
      "C:\Users\Admin\AppData\Local\Temp\New Feature\4.exe"
      4⤵
      Executes dropped EXE
      Drops startup file
      Suspicious use of WriteProcessMemory
      PID:2112
    - - C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe
        
        "C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: AddClipboardFormatListener
        
        PID:2304
  - - C:\Users\Admin\AppData\Local\Temp\New Feature\vpn.exe
      "C:\Users\Admin\AppData\Local\Temp\New Feature\vpn.exe"
      4⤵
      Executes dropped EXE
      Checks processor information in registry
      Modifies registry class
      Suspicious use of WriteProcessMemory
      PID:492
    - - C:\Users\Admin\AppData\Local\Temp\nsawckkurvpr.exe
        
        "C:\Users\Admin\AppData\Local\Temp\nsawckkurvpr.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:696
      - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\NSAWCK~1.TMP,S C:\Users\Admin\AppData\Local\Temp\NSAWCK~1.EXE
        6⤵
        Blocklisted process makes network request
        Loads dropped DLL
        Drops file in Program Files directory
        
        PID:2608
    - - C:\Windows\SysWOW64\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\xqcuoqqhg.vbs"
        5⤵
        
        PID:904
    - - C:\Windows\SysWOW64\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\egehaaostsy.vbs"
        5⤵
        Blocklisted process makes network request
        Modifies system certificate store
        
        PID:472
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\cEMWbnXwEcd & timeout 3 & del /f /q "C:\Users\Admin\AppData\Local\Temp\3aa1f98b275f4e2d8febb9e4478c5524.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3952
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

T1130

Modify Registry

T1112

Web Service

T1102

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/492-138-0x0000000000480000-0x000000000052E000-memory.dmp

Download

memory/492-140-0x0000000000400000-0x0000000000472000-memory.dmp

Download

memory/696-152-0x0000000002290000-0x0000000002390000-memory.dmp

Download

memory/696-153-0x0000000000400000-0x0000000000548000-memory.dmp

Download

memory/1096-115-0x0000000000400000-0x00000000004E5000-memory.dmp

Download

memory/1096-114-0x0000000002220000-0x0000000002301000-memory.dmp

Download

memory/2112-141-0x0000000000400000-0x0000000000472000-memory.dmp

Download

memory/2112-139-0x0000000000570000-0x00000000006BA000-memory.dmp

Download

memory/2304-148-0x0000000000400000-0x0000000000472000-memory.dmp

Download

memory/2304-147-0x0000000000490000-0x00000000004B6000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads