gandcrab | bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a

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\S-1-5-21-940901362-3608833189-1915618603-1000\JMPHDF-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: .JMPHDF 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/3fab0b57f61e23b | 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/3fab0b57f61e23b

Signatures

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Gandcrab family
gandcrab
Renames multiple (331) 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\JMPHDF-MANUAL.txt	GandCrab.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\f61e5d6f61e236512.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)	\??\E:	GandCrab.exe
File opened (read-only)	\??\H:	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)	\??\S:	GandCrab.exe
File opened (read-only)	\??\V:	GandCrab.exe
File opened (read-only)	\??\B:	GandCrab.exe
File opened (read-only)	\??\Y:	GandCrab.exe
File opened (read-only)	\??\L:	GandCrab.exe
File opened (read-only)	\??\M:	GandCrab.exe
File opened (read-only)	\??\W:	GandCrab.exe
File opened (read-only)	\??\Z:	GandCrab.exe
File opened (read-only)	\??\A:	GandCrab.exe
File opened (read-only)	\??\I:	GandCrab.exe
File opened (read-only)	\??\J:	GandCrab.exe
File opened (read-only)	\??\T:	GandCrab.exe
File opened (read-only)	\??\U:	GandCrab.exe
File opened (read-only)	\??\G:	GandCrab.exe
File opened (read-only)	\??\P:	GandCrab.exe
File opened (read-only)	\??\R:	GandCrab.exe
File opened (read-only)	\??\X:	GandCrab.exe
File opened (read-only)	\??\K:	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 25 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\InstallOptimize.avi	GandCrab.exe
File opened for modification	C:\Program Files\ResetRestart.midi	GandCrab.exe
File opened for modification	C:\Program Files\SkipLock.doc	GandCrab.exe
File opened for modification	C:\Program Files\SuspendEnable.tif	GandCrab.exe
File opened for modification	C:\Program Files\UndoRename.ps1	GandCrab.exe
File opened for modification	C:\Program Files\UninstallRestore.pptm	GandCrab.exe
File opened for modification	C:\Program Files\ExportApprove.xht	GandCrab.exe
File opened for modification	C:\Program Files\HideRename.wdp	GandCrab.exe
File created	C:\Program Files (x86)\JMPHDF-MANUAL.txt	GandCrab.exe
File created	C:\Program Files\JMPHDF-MANUAL.txt	GandCrab.exe
File opened for modification	C:\Program Files\ConfirmMount.mpeg3	GandCrab.exe
File opened for modification	C:\Program Files\FindSet.7z	GandCrab.exe
File opened for modification	C:\Program Files\ReadNew.jfif	GandCrab.exe
File opened for modification	C:\Program Files\SearchReset.tmp	GandCrab.exe
File opened for modification	C:\Program Files\StopUse.csv	GandCrab.exe
File opened for modification	C:\Program Files\UpdateExit.csv	GandCrab.exe
File created	C:\Program Files\f61e5d6f61e236512.lock	GandCrab.exe
File opened for modification	C:\Program Files\AddWatch.midi	GandCrab.exe
File opened for modification	C:\Program Files\UseStop.ram	GandCrab.exe
File opened for modification	C:\Program Files\StartRemove.vssm	GandCrab.exe
File opened for modification	C:\Program Files\TestPublish.wmx	GandCrab.exe
File opened for modification	C:\Program Files\WaitOptimize.mp4	GandCrab.exe
File created	C:\Program Files (x86)\f61e5d6f61e236512.lock	GandCrab.exe
File opened for modification	C:\Program Files\ImportMount.ogg	GandCrab.exe
File opened for modification	C:\Program Files\RestartEnter.ini	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
3020	684	WerFault.exe	84

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GandCrab.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	GandCrab.exe
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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
684	GandCrab.exe
684	GandCrab.exe
684	GandCrab.exe
684	GandCrab.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 672	684	GandCrab.exe	98
PID 684 wrote to memory of 672	684	GandCrab.exe	98
PID 684 wrote to memory of 672	684	GandCrab.exe	98

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:684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  PID:672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 684 -s 1652
  2⤵
  - Program crash
  PID:3020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 684 -ip 684
1⤵
PID:1044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

2

T1555

Credentials from Web Browsers

1

T1555.003

Windows Credential Manager

1

T1555.004

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

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

Defacement

1

T1491

Replay Monitor

Loading Replay Monitor...

Downloads

C:\$Recycle.Bin\S-1-5-21-940901362-3608833189-1915618603-1000\JMPHDF-MANUAL.txt

Filesize
8KB

MD5
0346eef186b47bd03efdd5c554a1ab1e

SHA1
61e36c4c320b41e3686df7fc36c3d10f85f417c1

SHA256
9b1d5ecb83a2b49d1a7e3b066a4b840869d625e767bbf2aee3f8dcccf275c5dd

SHA512
141456618240478ac75d8d931bc642ab424c4195f95f3e2d7fd22fcd00488b664f4d7c2fa5d88eec99f18b73edf6598b8ec7100661f83f551ff2cf24803c0a38

Download Submit
memory/684-1-0x0000000005590000-0x0000000005690000-memory.dmp

Filesize
1024KB

Download
memory/684-2-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/684-853-0x0000000005590000-0x0000000005690000-memory.dmp

Filesize
1024KB

Download
memory/684-855-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/684-854-0x0000000000400000-0x00000000052B3000-memory.dmp

Filesize
78.7MB

Download
memory/684-858-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/684-857-0x0000000000400000-0x00000000052B3000-memory.dmp

Filesize
78.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads