gandcrab | 022728f678d8dcc6cba20147595ed4099e9c98be0582c0f67518d5664e3b8523

Resubmissions

03-03-2024 01:34

240303-by6ttsbe94 10

03-03-2024 01:31

240303-bxkj7sbe62 7

Analysis

max time kernel
141s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
03-03-2024 01:34

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General

Target

Ransomware/GandCrab.exe
Size

291KB
MD5

e6b43b1028b6000009253344632e69c4
SHA1

e536b70e3ffe309f7ae59918da471d7bf4cadd1c
SHA256

bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a
SHA512

07da214314673407a7d3978ee6e1d20bf1e02f135bf557e86b50489ecc146014f2534515c1b613dba96e65489d8c82caaa8ed2e647684d61e5e86bd3e8251adf
SSDEEP

6144:nSRCSpUtLz+/enihebWBUOP3yIhLVMmi0CtG7go+I:SUOEnNnHbmP3yIE3tGX

Score

10^/10

gandcrab backdoor ransomware spyware stealer

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-2248906074-2862704502-246302768-1000\PJPAKBUCEL-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: .PJPAKBUCEL 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/8390a8715ae44151 | 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/8390a8715ae44151

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 (288) 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:

GandCrab.exe

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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

GandCrab.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp"	GandCrab.exe

Drops file in Program Files directory 41 IoCs

Processes:

GandCrab.exe

description	ioc	process
File opened for modification	C:\Program Files\ConvertFromSet.M2TS	GandCrab.exe
File opened for modification	C:\Program Files\DebugAssert.M2T	GandCrab.exe
File opened for modification	C:\Program Files\InstallPublish.midi	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\5ae446bc5ae441547b.lock	GandCrab.exe
File opened for modification	C:\Program Files\BlockImport.xps	GandCrab.exe
File opened for modification	C:\Program Files\CheckpointShow.ttf	GandCrab.exe
File opened for modification	C:\Program Files\NewClose.cfg	GandCrab.exe
File opened for modification	C:\Program Files\TraceRead.3gp	GandCrab.exe
File opened for modification	C:\Program Files\UnpublishTest.xltx	GandCrab.exe
File opened for modification	C:\Program Files\SuspendConvertFrom.hta	GandCrab.exe
File opened for modification	C:\Program Files\WriteDeny.wmv	GandCrab.exe
File opened for modification	C:\Program Files\SkipRemove.hta	GandCrab.exe
File opened for modification	C:\Program Files\UnblockSuspend.pdf	GandCrab.exe
File opened for modification	C:\Program Files\UnlockEdit.ps1	GandCrab.exe
File opened for modification	C:\Program Files\DenyUnlock.mp2v	GandCrab.exe
File opened for modification	C:\Program Files\DisconnectUnblock.aifc	GandCrab.exe
File opened for modification	C:\Program Files\GrantJoin.ps1	GandCrab.exe
File opened for modification	C:\Program Files\HideSave.ini	GandCrab.exe
File opened for modification	C:\Program Files\SaveEdit.rle	GandCrab.exe
File opened for modification	C:\Program Files\UseUnpublish.eprtx	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\PJPAKBUCEL-MANUAL.txt	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\PJPAKBUCEL-MANUAL.txt	GandCrab.exe
File opened for modification	C:\Program Files\RedoUnprotect.ttc	GandCrab.exe
File opened for modification	C:\Program Files\RestartRead.DVR-MS	GandCrab.exe
File opened for modification	C:\Program Files\UninstallStart.hta	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\PJPAKBUCEL-MANUAL.txt	GandCrab.exe
File created	C:\Program Files\PJPAKBUCEL-MANUAL.txt	GandCrab.exe
File opened for modification	C:\Program Files\NewGroup.m1v	GandCrab.exe
File opened for modification	C:\Program Files\PublishUnregister.mpeg2	GandCrab.exe
File opened for modification	C:\Program Files\RestartCompress.wav	GandCrab.exe
File created	C:\Program Files (x86)\PJPAKBUCEL-MANUAL.txt	GandCrab.exe
File created	C:\Program Files (x86)\5ae446bc5ae441547b.lock	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\5ae446bc5ae441547b.lock	GandCrab.exe
File created	C:\Program Files\5ae446bc5ae441547b.lock	GandCrab.exe
File opened for modification	C:\Program Files\AddMeasure.dot	GandCrab.exe
File opened for modification	C:\Program Files\AddSave.tiff	GandCrab.exe
File opened for modification	C:\Program Files\GetConvertTo.ogg	GandCrab.exe
File opened for modification	C:\Program Files\SubmitLock.jpeg	GandCrab.exe
File opened for modification	C:\Program Files\OpenStart.m4v	GandCrab.exe
File opened for modification	C:\Program Files\SelectRevoke.mp4v	GandCrab.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\5ae446bc5ae441547b.lock	GandCrab.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:

GandCrab.exe

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

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

2412 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

GandCrab.exe

pid process

3012 GandCrab.exe
3012 GandCrab.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 2536 vssvc.exe
Token: SeRestorePrivilege 2536 vssvc.exe
Token: SeAuditPrivilege 2536 vssvc.exe

pid	process
2412	vssadmin.exe

pid	process
3012	GandCrab.exe
3012	GandCrab.exe

description	pid	process
Token: SeBackupPrivilege	2536	vssvc.exe
Token: SeRestorePrivilege	2536	vssvc.exe
Token: SeAuditPrivilege	2536	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

GandCrab.execmd.exe

description	pid	process	target process
PID 3012 wrote to memory of 2888	3012	GandCrab.exe	cmd.exe
PID 3012 wrote to memory of 2888	3012	GandCrab.exe	cmd.exe
PID 3012 wrote to memory of 2888	3012	GandCrab.exe	cmd.exe
PID 3012 wrote to memory of 2888	3012	GandCrab.exe	cmd.exe
PID 2888 wrote to memory of 2412	2888	cmd.exe	vssadmin.exe
PID 2888 wrote to memory of 2412	2888	cmd.exe	vssadmin.exe
PID 2888 wrote to memory of 2412	2888	cmd.exe	vssadmin.exe
PID 2888 wrote to memory of 2412	2888	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\Ransomware\GandCrab.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware\GandCrab.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:3012

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:2888

C:\Windows\SysWOW64\vssadmin.exe
vssadmin delete shadows /all /quiet
3⤵
- Interacts with shadow copies
PID:2412

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2536

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-1-5-21-2248906074-2862704502-246302768-1000\PJPAKBUCEL-MANUAL.txt
Filesize
8KB

MD5
7b5d36f48832b181bba07463ab63a912

SHA1
d12e40ff2c005840b5da6dc4d784149ad8c48cd2

SHA256
18cc25ae7d25acf311b4128a9f2f6334d74f591eab5699960d0aeeefa9e9c94c

SHA512
0e8ecd1be86bc1a1b6f100873ab1620e53cfd59639c5505570c79e4cf928aba7e59c6a4c9a213c611ae54b3697e607078d357c5e7ee4b7769860b13dde68bc9b

Download Submit
memory/3012-1-0x00000000053F0000-0x00000000054F0000-memory.dmp

Filesize
1024KB

Download
memory/3012-734-0x0000000000400000-0x00000000052B3000-memory.dmp

Filesize
78.7MB

Download
memory/3012-736-0x00000000053F0000-0x00000000054F0000-memory.dmp

Filesize
1024KB

Download