gandcrab | 3526c74a22a6a7ff285bddc4a055d22e443bd2d9ceb47aa7bc20240256084787

Analysis

max time kernel
1790s
max time network
1562s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26-03-2024 13:44

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General

Target

Fuck.exe
Size

168KB
MD5

d1c616cf0fd1eb61164e9091cad354c5
SHA1

444539834e496f04cf9c07594645ca252f3b52a8
SHA256

b5a2fe5b87deed18b789929faaa7601771de63dfe6a670d09224aa57ebe8c6b9
SHA512

441477d5a429dad3e499e943c8dfb54ad673320eed81f4fec00b3798839b3bb296c446354d5e1f46ec52aa278417011ab8ae7f374df1347e341e46243276af00
SSDEEP

3072:B36NS6YsVsI11Tl2JD5wMPm+RY8RvPCdSGk8RQcj2Er:B3H6TsuzYGMgWcSE

Score

10^/10

gandcrab backdoor ransomware spyware stealer

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\AUJSLF-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: .AUJSLF 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/91eed623f5163c3 | 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/91eed623f5163c3

Signatures

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490
Renames multiple (311) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
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
T1552.001

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

Processes:

Fuck.exe

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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

Fuck.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp"	Fuck.exe

Drops file in Program Files directory 40 IoCs

Processes:

Fuck.exe

description	ioc	process
File opened for modification	C:\Program Files\MoveRename.vsdx	Fuck.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\f51642ef5163c6512.lock	Fuck.exe
File opened for modification	C:\Program Files\UninstallLock.gif	Fuck.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\f51642ef5163c6512.lock	Fuck.exe
File opened for modification	C:\Program Files\AssertCompare.php	Fuck.exe
File opened for modification	C:\Program Files\DenyRename.wvx	Fuck.exe
File opened for modification	C:\Program Files\PopReceive.txt	Fuck.exe
File opened for modification	C:\Program Files\RedoRevoke.vstm	Fuck.exe
File opened for modification	C:\Program Files\RenameAdd.rmi	Fuck.exe
File opened for modification	C:\Program Files\HideFind.crw	Fuck.exe
File opened for modification	C:\Program Files\PopBlock.vsdx	Fuck.exe
File opened for modification	C:\Program Files\UpdateSelect.mhtml	Fuck.exe
File created	C:\Program Files (x86)\AUJSLF-MANUAL.txt	Fuck.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\AUJSLF-MANUAL.txt	Fuck.exe
File opened for modification	C:\Program Files\BlockRepair.mpe	Fuck.exe
File opened for modification	C:\Program Files\CopyRedo.i64	Fuck.exe
File opened for modification	C:\Program Files\FindFormat.m3u	Fuck.exe
File opened for modification	C:\Program Files\PingMerge.mp3	Fuck.exe
File opened for modification	C:\Program Files\ResumeHide.rtf	Fuck.exe
File created	C:\Program Files (x86)\f51642ef5163c6512.lock	Fuck.exe
File opened for modification	C:\Program Files\CloseUpdate.potm	Fuck.exe
File opened for modification	C:\Program Files\DisableConvertFrom.rar	Fuck.exe
File opened for modification	C:\Program Files\GrantStep.xml	Fuck.exe
File opened for modification	C:\Program Files\ReceiveDebug.mp4v	Fuck.exe
File opened for modification	C:\Program Files\UninstallConvertTo.MTS	Fuck.exe
File opened for modification	C:\Program Files\SyncClose.wmv	Fuck.exe
File opened for modification	C:\Program Files\UnprotectWatch.TTS	Fuck.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\AUJSLF-MANUAL.txt	Fuck.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\AUJSLF-MANUAL.txt	Fuck.exe
File opened for modification	C:\Program Files\LimitDismount.asx	Fuck.exe
File opened for modification	C:\Program Files\ReadConvertTo.pub	Fuck.exe
File opened for modification	C:\Program Files\SelectClear.vbe	Fuck.exe
File opened for modification	C:\Program Files\UpdateRedo.dwfx	Fuck.exe
File opened for modification	C:\Program Files\RepairClear.xlsb	Fuck.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\f51642ef5163c6512.lock	Fuck.exe
File created	C:\Program Files\AUJSLF-MANUAL.txt	Fuck.exe
File created	C:\Program Files\f51642ef5163c6512.lock	Fuck.exe
File opened for modification	C:\Program Files\ClearConnect.xml	Fuck.exe
File opened for modification	C:\Program Files\MoveCompress.clr	Fuck.exe
File opened for modification	C:\Program Files\PushRemove.avi	Fuck.exe

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

System Information Discovery
T1082

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

Processes:

Fuck.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Fuck.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Fuck.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Fuck.exe

Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

2980 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Fuck.exe

pid process

2868 Fuck.exe
2868 Fuck.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1272 vssvc.exe
Token: SeRestorePrivilege 1272 vssvc.exe
Token: SeAuditPrivilege 1272 vssvc.exe

pid	process
2980	vssadmin.exe

pid	process
2868	Fuck.exe
2868	Fuck.exe

description	pid	process
Token: SeBackupPrivilege	1272	vssvc.exe
Token: SeRestorePrivilege	1272	vssvc.exe
Token: SeAuditPrivilege	1272	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Fuck.execmd.exe

description	pid	process	target process
PID 2868 wrote to memory of 2180	2868	Fuck.exe	cmd.exe
PID 2868 wrote to memory of 2180	2868	Fuck.exe	cmd.exe
PID 2868 wrote to memory of 2180	2868	Fuck.exe	cmd.exe
PID 2868 wrote to memory of 2180	2868	Fuck.exe	cmd.exe
PID 2180 wrote to memory of 2980	2180	cmd.exe	vssadmin.exe
PID 2180 wrote to memory of 2980	2180	cmd.exe	vssadmin.exe
PID 2180 wrote to memory of 2980	2180	cmd.exe	vssadmin.exe
PID 2180 wrote to memory of 2980	2180	cmd.exe	vssadmin.exe

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\Fuck.exe
"C:\Users\Admin\AppData\Local\Temp\Fuck.exe"
1⤵
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2868

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:2180

C:\Windows\SysWOW64\vssadmin.exe
vssadmin delete shadows /all /quiet
3⤵
- Interacts with shadow copies
PID:2980

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1272

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Inhibit System Recovery

T1490

Defacement

T1491

Resource Development

Reconnaissance

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Downloads

F:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\AUJSLF-MANUAL.txt
Filesize
8KB

MD5
aa63d825477b5293edc2d68619fd8709

SHA1
c1bb154ace790d0d1bb74281cef6c96f6b49f5f9

SHA256
4e55d04f0eb7a87984bf1d0e4a455f34d12c32865776dd30dd253c98d77ff079

SHA512
8d12852986a6a77a7f4a6b97e67f75235dc3ca0c3eeff4e85547f6e3b62722b3edbed100de1077d2883f4232dab679c54a9b1871dbc723da73600204e3df280e

Download Submit
memory/2868-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/2868-2-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2868-781-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2868-783-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download