gandcrab | bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a

Reason

Machine shutdown

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 defense_evasion discovery execution impact ransomware spyware stealer

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-1846800975-3917212583-2893086201-1000\BEEAKK-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: .BEEAKK 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/701bffa2e11ce655 | 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/701bffa2e11ce655

Signatures

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Gandcrab family
gandcrab
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Renames multiple (278) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
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\BEEAKK-MANUAL.txt	GandCrab.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\e11ce1b8e11ce658512.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)	\??\L:	GandCrab.exe
File opened (read-only)	\??\M:	GandCrab.exe
File opened (read-only)	\??\O:	GandCrab.exe
File opened (read-only)	\??\Q:	GandCrab.exe
File opened (read-only)	\??\E:	GandCrab.exe
File opened (read-only)	\??\H:	GandCrab.exe
File opened (read-only)	\??\I:	GandCrab.exe
File opened (read-only)	\??\R:	GandCrab.exe
File opened (read-only)	\??\S:	GandCrab.exe
File opened (read-only)	\??\V:	GandCrab.exe
File opened (read-only)	\??\P:	GandCrab.exe
File opened (read-only)	\??\T:	GandCrab.exe
File opened (read-only)	\??\W:	GandCrab.exe
File opened (read-only)	\??\X:	GandCrab.exe
File opened (read-only)	\??\Y:	GandCrab.exe
File opened (read-only)	\??\B:	GandCrab.exe
File opened (read-only)	\??\J:	GandCrab.exe
File opened (read-only)	\??\N:	GandCrab.exe
File opened (read-only)	\??\U:	GandCrab.exe
File opened (read-only)	\??\Z:	GandCrab.exe
File opened (read-only)	\??\A:	GandCrab.exe
File opened (read-only)	\??\G:	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-1-5-21-1846800975-3917212583-2893086201-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp"	GandCrab.exe

Drops file in Program Files directory 32 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\AddSkip.wvx	GandCrab.exe
File opened for modification	C:\Program Files\ClearBlock.mpeg	GandCrab.exe
File opened for modification	C:\Program Files\WatchRestart.ppt	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\BEEAKK-MANUAL.txt	GandCrab.exe
File opened for modification	C:\Program Files\GrantInitialize.xps	GandCrab.exe
File opened for modification	C:\Program Files\InstallNew.csv	GandCrab.exe
File opened for modification	C:\Program Files\UseConvertTo.odp	GandCrab.exe
File opened for modification	C:\Program Files\ApproveSubmit.pptx	GandCrab.exe
File opened for modification	C:\Program Files\ExportClose.7z	GandCrab.exe
File opened for modification	C:\Program Files\StepRepair.m3u	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\e11ce1b8e11ce658512.lock	GandCrab.exe
File created	C:\Program Files\e11ce1b8e11ce658512.lock	GandCrab.exe
File opened for modification	C:\Program Files\GrantTest.ini	GandCrab.exe
File opened for modification	C:\Program Files\InstallSend.dwfx	GandCrab.exe
File created	C:\Program Files (x86)\BEEAKK-MANUAL.txt	GandCrab.exe
File opened for modification	C:\Program Files\WaitSend.mpe	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\BEEAKK-MANUAL.txt	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\BEEAKK-MANUAL.txt	GandCrab.exe
File opened for modification	C:\Program Files\ProtectGrant.odt	GandCrab.exe
File opened for modification	C:\Program Files\ResumeWrite.aif	GandCrab.exe
File opened for modification	C:\Program Files\SelectLimit.pps	GandCrab.exe
File opened for modification	C:\Program Files\TestAdd.wmx	GandCrab.exe
File created	C:\Program Files (x86)\e11ce1b8e11ce658512.lock	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\e11ce1b8e11ce658512.lock	GandCrab.exe
File created	C:\Program Files\BEEAKK-MANUAL.txt	GandCrab.exe
File opened for modification	C:\Program Files\CompleteRevoke.dib	GandCrab.exe
File opened for modification	C:\Program Files\SendSwitch.vstm	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\e11ce1b8e11ce658512.lock	GandCrab.exe
File opened for modification	C:\Program Files\BlockWrite.wma	GandCrab.exe
File opened for modification	C:\Program Files\ConvertFromMount.DVR	GandCrab.exe
File opened for modification	C:\Program Files\RevokeInitialize.pot	GandCrab.exe
File opened for modification	C:\Program Files\TraceUnpublish.mpv2	GandCrab.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vssadmin.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

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2808	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2316	GandCrab.exe
2316	GandCrab.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2756	vssvc.exe
Token: SeRestorePrivilege	2756	vssvc.exe
Token: SeAuditPrivilege	2756	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2748	2316	GandCrab.exe	31
PID 2316 wrote to memory of 2748	2316	GandCrab.exe	31
PID 2316 wrote to memory of 2748	2316	GandCrab.exe	31
PID 2316 wrote to memory of 2748	2316	GandCrab.exe	31
PID 2748 wrote to memory of 2808	2748	cmd.exe	33
PID 2748 wrote to memory of 2808	2748	cmd.exe	33
PID 2748 wrote to memory of 2808	2748	cmd.exe	33
PID 2748 wrote to memory of 2808	2748	cmd.exe	33

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\GandCrab.exe
"C:\Users\Admin\AppData\Local\Temp\GandCrab.exe"
1⤵
- 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:2316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2748
- - C:\Windows\SysWOW64\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - System Location Discovery: System Language Discovery
    - Interacts with shadow copies
    PID:2808

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2756

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Documents\AssertConvertFrom.vdw.beeakk
1⤵
- Modifies registry class
PID:1644

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2352

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

1

T1006

Indicator Removal

2

T1070

File Deletion

Modify Registry

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

3

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

Inhibit System Recovery

2

T1490

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Downloads

F:\$RECYCLE.BIN\S-1-5-21-1846800975-3917212583-2893086201-1000\BEEAKK-MANUAL.txt

Filesize
8KB

MD5
2b45ef9527d2c602eb76542c9b94b1e8

SHA1
ca4e7f1952bf99159de795545801d6f7baff9957

SHA256
74fa9c8634fe04ad636582c3923e06692aa933d2931c01f5db70977b6eb97d95

SHA512
b4ba4e58ac398205053059752a6b04f1bb4ff43ee1d9094a47322f53258805bcd2f48e7dddd4ab7a35e5972e49798893ca6eb5ec8267323cb22a9d7ca4d11a63

Download Submit
memory/2316-1-0x00000000053D0000-0x00000000054D0000-memory.dmp

Filesize
1024KB

Download
memory/2316-2-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2316-727-0x00000000053D0000-0x00000000054D0000-memory.dmp

Filesize
1024KB

Download
memory/2316-729-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2316-728-0x0000000000400000-0x00000000052B3000-memory.dmp

Filesize
78.7MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads