gandcrab | 2258d167c1e46f5f3399534bc25e413e43c741da36bcd833ab69732fc1d1482a

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
18-06-2024 20:59

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

20240618cebeae1d33d491080543e23611710876gandcrab.exe
Size

99KB
MD5

cebeae1d33d491080543e23611710876
SHA1

ea34e12b54f2cf42f5c7728a1daecde0a2539bd9
SHA256

2258d167c1e46f5f3399534bc25e413e43c741da36bcd833ab69732fc1d1482a
SHA512

45f52588b14cf66f0cbb4654489c0e25099b2aac7ccac95bdf066451f47868d6ba9b86fa98e325c92461c4a038f45c4172acee2a653ba25f76d8128e3712c30c
SSDEEP

3072:xMSjOnrmBIMqqDL2/mr3IdE8we0Avu5r++ygLIaaypQ8CrS6:xXjOnr6jqqDL6aprYS6

Score

10^/10

gandcrab backdoor persistence ransomware upx

Malware Config

Extracted

Family

gandcrab

http://gdcbghvjyqy7jclk.onion.top/

Signatures

GandCrab payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3608-0-0x0000000000A20000-0x0000000000A3C000-memory.dmp	family_gandcrab
behavioral2/memory/3608-4-0x0000000000A20000-0x0000000000A3C000-memory.dmp	family_gandcrab

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
upx

Processes:

resource yara_rule

behavioral2/memory/3608-0-0x0000000000A20000-0x0000000000A3C000-memory.dmp upx
behavioral2/memory/3608-4-0x0000000000A20000-0x0000000000A3C000-memory.dmp upx

resource	yara_rule
behavioral2/memory/3608-0-0x0000000000A20000-0x0000000000A3C000-memory.dmp	upx
behavioral2/memory/3608-4-0x0000000000A20000-0x0000000000A3C000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

20240618cebeae1d33d491080543e23611710876gandcrab.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\oqtacanbief = "C:\\Users\\Admin\\AppData\\Local\\Temp\\20240618cebeae1d33d491080543e23611710876gandcrab.exe"	20240618cebeae1d33d491080543e23611710876gandcrab.exe

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:

20240618cebeae1d33d491080543e23611710876gandcrab.exe

description	ioc	process
File opened (read-only)	\??\K:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\N:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\T:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\U:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\W:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\X:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\Z:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\H:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\I:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\Q:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\A:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\B:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\M:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\O:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\R:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\V:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\Y:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\E:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\G:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\J:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\L:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\P:	20240618cebeae1d33d491080543e23611710876gandcrab.exe
File opened (read-only)	\??\S:	20240618cebeae1d33d491080543e23611710876gandcrab.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:

20240618cebeae1d33d491080543e23611710876gandcrab.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	20240618cebeae1d33d491080543e23611710876gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	20240618cebeae1d33d491080543e23611710876gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	20240618cebeae1d33d491080543e23611710876gandcrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

20240618cebeae1d33d491080543e23611710876gandcrab.exe

pid	process
3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe
3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe
3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe
3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

20240618cebeae1d33d491080543e23611710876gandcrab.exe

description	pid	process	target process
PID 3608 wrote to memory of 2356	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 2356	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 2356	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 1212	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 1212	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 1212	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 4780	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 4780	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 4780	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 4108	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 4108	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 4108	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 1240	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 1240	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe
PID 3608 wrote to memory of 1240	3608	20240618cebeae1d33d491080543e23611710876gandcrab.exe	nslookup.exe

C:\Users\Admin\AppData\Local\Temp\20240618cebeae1d33d491080543e23611710876gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\20240618cebeae1d33d491080543e23611710876gandcrab.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3608

C:\Windows\SysWOW64\nslookup.exe
nslookup nomoreransom.bit dns1.soprodns.ru
2⤵
PID:2356

C:\Windows\SysWOW64\nslookup.exe
nslookup emsisoft.bit dns1.soprodns.ru
2⤵
PID:1212

C:\Windows\SysWOW64\nslookup.exe
nslookup gandcrab.bit dns1.soprodns.ru
2⤵
PID:4780

C:\Windows\SysWOW64\nslookup.exe
nslookup nomoreransom.bit dns1.soprodns.ru
2⤵
PID:4108

C:\Windows\SysWOW64\nslookup.exe
nslookup emsisoft.bit dns1.soprodns.ru
2⤵
PID:1240

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3608-0-0x0000000000A20000-0x0000000000A3C000-memory.dmp

Filesize
112KB

Download
memory/3608-4-0x0000000000A20000-0x0000000000A3C000-memory.dmp

Filesize
112KB

Download