gandcrab | 4a9dad6192998bba2047afd0edcde14f7d81a3171e639cac7d30615ae6b9d8a3

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-06-2024 11:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
Size

168KB
MD5

01def9f56c9af2d97800d7366551a2f1
SHA1

3845b36222249023360100a1b3a6f40dfd165321
SHA256

4a9dad6192998bba2047afd0edcde14f7d81a3171e639cac7d30615ae6b9d8a3
SHA512

aa2bcddc092d1d556d04b6aaaeb5dce91cb9536cc3cf420fcf2169dc603a132c72f870df13cb02e2dd8f788900995146ac1944100ed50d2803412728cbe32697
SSDEEP

3072:tgk9+8F/zGO4O9AFracIaDa2HtvudUYJDjnxk0RVikMbqT:Ce2eIG7aDa21e3tVi3C

Score

10^/10

gandcrab backdoor ransomware spyware stealer upx

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-3558294865-3673844354-2255444939-1000\YLTFWX-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: .YLTFWX 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/a6f2fc4580742886 | 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--- 7ftDEgLb/ZS0lcmZbHM61KDJ6AOtD78KkA7absMgUXYxWLsC+5+UYF9xVmDt9NLJOpDMAuOVtODMRX7IKnQXQzua3LPyzokSUuglaqKXwabsGM4pXku5In6gtMQMqg7sgEh1XW1iPMFgiUj/s1LdWpJHdiPjMpn7rCZNO/A31mak0K8RefoREu3BxtlAsseHWfVIIKN0U4NnA3w0Ga7XDLlF3iOIB6ImYbF6Z/7MBN2mgBr2rZ2gU1R7jNx2WKAyu4W+5zlHFnKwMISBi1CwemOo6FrxnP+Z5F9bSR7OvDBsmLj7oYD6GBgpBqj3RSAVfvfE0yZSXyCRtLeJLNALBnJqrMZoR7O3NbHJmdyRjEeHP93y/vNtLLzjX6P0r1BW4eYoT03JrPa/L0B0wffnS0ez96BFoTHFq52HPDCx6yhEudvoPVoM6iaVy+mvqAdvYbwBrtoypS8G1fulWjmX7qd4B+w6gTGwK0yub5gfz9wpLQCj3bimwDPi8jPeKPiggI2bWKz+7QkWvC2ihYFfEuZEsyM4ANvhxNQXIE31UkGbyf6MN51c1gY/+eQVe2gEznTbCqfrOdcnPBOVfcolLqsb8wmYcDmVvbCVEY+sVLSKnN6aP0Iub5o0+FHLc3/SgKIMDArFyYH6qAJw1UaCxMHGs3USmw== ---END PC DATA---

URLs

http://gandcrabmfe6mnef.onion/a6f2fc4580742886

Signatures

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Renames multiple (250) 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

Processes:

01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation 01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

Drops startup file 2 IoCs

Processes:

01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\YLTFWX-MANUAL.txt	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\80742f6b8074288611e.lock	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

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
UPX packed file 1 IoCs
Detects executables packed with UPX/modified UPX open source packer.
upx

Processes:

resource yara_rule

behavioral2/memory/4228-0-0x0000000000400000-0x0000000000AD0000-memory.dmp upx

resource	yara_rule
behavioral2/memory/4228-0-0x0000000000400000-0x0000000000AD0000-memory.dmp	upx

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:

01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

description	ioc	process
File opened (read-only)	\??\L:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\P:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\Q:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\S:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\Y:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\A:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\E:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\J:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\W:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\X:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\Z:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\H:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\I:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\N:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\O:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\R:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\V:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\B:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\K:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\T:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\U:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\G:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened (read-only)	\??\M:	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp"	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

Drops file in Program Files directory 14 IoCs

Processes:

01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

description	ioc	process
File opened for modification	C:\Program Files\SendExport.wmv	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File created	C:\Program Files\YLTFWX-MANUAL.txt	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened for modification	C:\Program Files\NewWait.jfif	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened for modification	C:\Program Files\ProtectSave.tiff	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened for modification	C:\Program Files\SaveUninstall.jpeg	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened for modification	C:\Program Files\LockRemove.ram	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened for modification	C:\Program Files\RevokeImport.wmx	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened for modification	C:\Program Files\UseAssert.M2TS	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File created	C:\Program Files (x86)\YLTFWX-MANUAL.txt	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File created	C:\Program Files (x86)\80742f6b8074288611e.lock	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File created	C:\Program Files\80742f6b8074288611e.lock	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened for modification	C:\Program Files\DismountWrite.pot	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened for modification	C:\Program Files\FormatEnable.i64	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
File opened for modification	C:\Program Files\TestRead.zip	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2464 4228 WerFault.exe 01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

pid	pid_target	process	target process
2464	4228	WerFault.exe	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.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

Processes:

01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

pid	process
4228	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
4228	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
4228	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
4228	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe

description	pid	process	target process
PID 4228 wrote to memory of 4892	4228	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe	cmd.exe
PID 4228 wrote to memory of 4892	4228	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe	cmd.exe
PID 4228 wrote to memory of 4892	4228	01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\01def9f56c9af2d97800d7366551a2f1_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops startup file
- 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:4228

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
2⤵
PID:4892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4228 -s 1408
2⤵
- Program crash
PID:2464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4228 -ip 4228
1⤵
PID:2432

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads

F:\$RECYCLE.BIN\S-1-5-21-3558294865-3673844354-2255444939-1000\YLTFWX-MANUAL.txt
Filesize
8KB

MD5
60b8a0bb3b4bccaf207d2a7ef180423b

SHA1
a1c10bd53fd40ec748623a9086f92f1db967501d

SHA256
2ec51b5dc1cb2d9fa8b6def1538bb013a2f1599114bce14f67e180f4bda11104

SHA512
5ab03c1f228eb30cb636587514e736c0e1321eaa38ca5338ab73e5777be2a6af6c13be3e7da02c61db1aee4258609ed713e9a2b4acc62f1c920f119a49234f21

Download Submit
memory/4228-0-0x0000000000400000-0x0000000000AD0000-memory.dmp

Filesize
6.8MB

Download
memory/4228-2-0x0000000000DA0000-0x0000000000EA0000-memory.dmp

Filesize
1024KB

Download
memory/4228-3-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/4228-659-0x0000000000400000-0x0000000000AD0000-memory.dmp

Filesize
6.8MB

Download
memory/4228-661-0x0000000000400000-0x0000000000AD0000-memory.dmp

Filesize
6.8MB

Download
memory/4228-663-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/4228-662-0x0000000000DA0000-0x0000000000EA0000-memory.dmp

Filesize
1024KB

Download