gandcrab | bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-11-2024 19:53

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General

Target

GandCrab.exe
Size

291KB
MD5

e6b43b1028b6000009253344632e69c4
SHA1

e536b70e3ffe309f7ae59918da471d7bf4cadd1c
SHA256

bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a
SHA512

07da214314673407a7d3978ee6e1d20bf1e02f135bf557e86b50489ecc146014f2534515c1b613dba96e65489d8c82caaa8ed2e647684d61e5e86bd3e8251adf
SSDEEP

6144:nSRCSpUtLz+/enihebWBUOP3yIhLVMmi0CtG7go+I:SUOEnNnHbmP3yIE3tGX

Score

10^/10

gandcrab backdoor credential_access discovery ransomware spyware stealer

Malware Config

Extracted

Path

C:\$Recycle.Bin\NGONKAZX-MANUAL.txt

Family

gandcrab

Ransom Note

---= GANDCRAB V5.2 =--- ***********************UNDER NO CIRCUMSTANCES DO NOT DELETE THIS FILE, UNTIL ALL YOUR DATA IS RECOVERED*********************** *****FAILING TO DO SO, WILL RESULT IN YOUR SYSTEM CORRUPTION, IF THERE ARE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .NGONKAZX The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. The server with your key is in a closed network TOR. You can get there by the following ways: ---------------------------------------------------------------------------------------- | 0. Download Tor browser - https://www.torproject.org/ | 1. Install Tor browser | 2. Open Tor Browser | 3. Open link in TOR browser: http://gandcrabmfe6mnef.onion/584583a3d2d94b20 | 4. Follow the instructions on this page ---------------------------------------------------------------------------------------- On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free. ATTENTION! IN ORDER TO PREVENT DATA DAMAGE: * DO NOT MODIFY ENCRYPTED FILES * DO NOT CHANGE DATA BELOW ---BEGIN GANDCRAB KEY--- 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 ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---

URLs

http://gandcrabmfe6mnef.onion/584583a3d2d94b20

Signatures

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Gandcrab family
gandcrab
Renames multiple (339) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Checks computer location settings 2 TTPs 1 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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	GandCrab.exe

Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
credential_access stealer

Windows Credential Manager
T1555.004

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\NGONKAZX-MANUAL.txt	GandCrab.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\d2d94ccdd2d94b2d314.lock	GandCrab.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

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\V:	GandCrab.exe
File opened (read-only)	\??\X:	GandCrab.exe
File opened (read-only)	\??\A:	GandCrab.exe
File opened (read-only)	\??\E:	GandCrab.exe
File opened (read-only)	\??\I:	GandCrab.exe
File opened (read-only)	\??\N:	GandCrab.exe
File opened (read-only)	\??\O:	GandCrab.exe
File opened (read-only)	\??\Q:	GandCrab.exe
File opened (read-only)	\??\G:	GandCrab.exe
File opened (read-only)	\??\Y:	GandCrab.exe
File opened (read-only)	\??\Z:	GandCrab.exe
File opened (read-only)	\??\H:	GandCrab.exe
File opened (read-only)	\??\K:	GandCrab.exe
File opened (read-only)	\??\L:	GandCrab.exe
File opened (read-only)	\??\R:	GandCrab.exe
File opened (read-only)	\??\S:	GandCrab.exe
File opened (read-only)	\??\U:	GandCrab.exe
File opened (read-only)	\??\B:	GandCrab.exe
File opened (read-only)	\??\J:	GandCrab.exe
File opened (read-only)	\??\M:	GandCrab.exe
File opened (read-only)	\??\P:	GandCrab.exe
File opened (read-only)	\??\T:	GandCrab.exe
File opened (read-only)	\??\W:	GandCrab.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp"	GandCrab.exe

Drops file in Program Files directory 39 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\OptimizeUninstall.AAC	GandCrab.exe
File opened for modification	C:\Program Files\RestoreMeasure.xsl	GandCrab.exe
File opened for modification	C:\Program Files\SkipLock.m1v	GandCrab.exe
File opened for modification	C:\Program Files\SyncUndo.svgz	GandCrab.exe
File created	C:\Program Files\NGONKAZX-MANUAL.txt	GandCrab.exe
File opened for modification	C:\Program Files\BlockDismount.raw	GandCrab.exe
File opened for modification	C:\Program Files\ConfirmDisable.jpg	GandCrab.exe
File opened for modification	C:\Program Files\StopRepair.AAC	GandCrab.exe
File opened for modification	C:\Program Files\UnregisterConvertTo.xlsx	GandCrab.exe
File opened for modification	C:\Program Files\EnterMeasure.htm	GandCrab.exe
File opened for modification	C:\Program Files\GroupSkip.ps1	GandCrab.exe
File opened for modification	C:\Program Files\SaveSkip.vbe	GandCrab.exe
File opened for modification	C:\Program Files\InitializeDisable.mpe	GandCrab.exe
File opened for modification	C:\Program Files\ResumeProtect.bmp	GandCrab.exe
File created	C:\Program Files (x86)\NGONKAZX-MANUAL.txt	GandCrab.exe
File created	C:\Program Files\d2d94ccdd2d94b2d314.lock	GandCrab.exe
File opened for modification	C:\Program Files\BlockUnregister.sql	GandCrab.exe
File opened for modification	C:\Program Files\FormatRename.dotx	GandCrab.exe
File opened for modification	C:\Program Files\OptimizeOpen.temp	GandCrab.exe
File opened for modification	C:\Program Files\ReceiveWrite.jpeg	GandCrab.exe
File opened for modification	C:\Program Files\SendApprove.aiff	GandCrab.exe
File opened for modification	C:\Program Files\UnlockFormat.xla	GandCrab.exe
File opened for modification	C:\Program Files\ApproveSave.mp2	GandCrab.exe
File opened for modification	C:\Program Files\HideResume.search-ms	GandCrab.exe
File opened for modification	C:\Program Files\PopOptimize.pcx	GandCrab.exe
File opened for modification	C:\Program Files\InstallRegister.bin	GandCrab.exe
File opened for modification	C:\Program Files\TraceResize.aif	GandCrab.exe
File opened for modification	C:\Program Files\MergeUse.xht	GandCrab.exe
File opened for modification	C:\Program Files\RemoveReset.m3u	GandCrab.exe
File created	C:\Program Files (x86)\d2d94ccdd2d94b2d314.lock	GandCrab.exe
File opened for modification	C:\Program Files\ApproveConfirm.3g2	GandCrab.exe
File opened for modification	C:\Program Files\FindInitialize.vbe	GandCrab.exe
File opened for modification	C:\Program Files\LimitEnable.asp	GandCrab.exe
File opened for modification	C:\Program Files\OutDisconnect.cr2	GandCrab.exe
File opened for modification	C:\Program Files\OutSet.bmp	GandCrab.exe
File opened for modification	C:\Program Files\SaveFind.mp4	GandCrab.exe
File opened for modification	C:\Program Files\EnterExport.css	GandCrab.exe
File opened for modification	C:\Program Files\FormatShow.css	GandCrab.exe
File opened for modification	C:\Program Files\InstallGrant.DVR-MS	GandCrab.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3588	212	WerFault.exe	82

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	GandCrab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	GandCrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	GandCrab.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	GandCrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
212	GandCrab.exe
212	GandCrab.exe
212	GandCrab.exe
212	GandCrab.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 212 wrote to memory of 1608	212	GandCrab.exe	96
PID 212 wrote to memory of 1608	212	GandCrab.exe	96
PID 212 wrote to memory of 1608	212	GandCrab.exe	96

C:\Users\Admin\AppData\Local\Temp\GandCrab.exe
"C:\Users\Admin\AppData\Local\Temp\GandCrab.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 212 -s 1396
  2⤵
  - Program crash
  PID:3588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 212 -ip 212
1⤵
PID:3476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Windows Credential Manager

T1555.004

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

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Downloads

C:\$Recycle.Bin\NGONKAZX-MANUAL.txt

Filesize
8KB

MD5
f05c279e387177bf3d022d3624072a4b

SHA1
a0ed0441d3a1a131b727ec92edc4a48e9b7b6069

SHA256
e4ffaa09487ce716266b5ed2383a2ab3a8502be46c299c786987e50d4e3a4646

SHA512
ee5a9c48e5658cee17a88bfe8a44f1d7cc4852a55324606fe089d33afed17817472666856cd8c85ad87bdb22ff3bc0f0eb1495c71ffdf0c7c5a88488e8ef5f38

Download Submit
memory/212-1-0x0000000005640000-0x0000000005740000-memory.dmp

Filesize
1024KB

Download
memory/212-2-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/212-867-0x0000000005640000-0x0000000005740000-memory.dmp

Filesize
1024KB

Download
memory/212-869-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/212-868-0x0000000000400000-0x00000000052B3000-memory.dmp

Filesize
78.7MB

Download
memory/212-872-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/212-871-0x0000000000400000-0x00000000052B3000-memory.dmp

Filesize
78.7MB

Download