gandcrab | d1a4a07b17bbefbe6b7aef72a57ca0a46ace4ea79056ff570a28102aff8f8442

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
17-06-2024 03:31

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General

Target

b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
Size

235KB
MD5

b68dc553317d59f38d4894455b991100
SHA1

a2c45b4c907d15213aa78c57ca164dd8999c4fac
SHA256

d1a4a07b17bbefbe6b7aef72a57ca0a46ace4ea79056ff570a28102aff8f8442
SHA512

5dd800eca4ce1900d0a69a19041c60b659c66ed1179dbeba56153e5cf4a9509ade03480d3974a26500781708a8317db55f7b0ec1f545c30c5933df19e1eb4467
SSDEEP

6144:qffBjk6/AyrZsnHvmTgKz6KSf3t4zKjhs9wq0X+5Q6T:qfZXZsHSgKzo2zKjct0X+5FT

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2128-2-0x0000000000400000-0x0000000000449000-memory.dmp	family_gandcrab
behavioral1/memory/2128-3-0x00000000002D0000-0x00000000002E7000-memory.dmp	family_gandcrab
behavioral1/memory/2128-5-0x0000000000400000-0x0000000000449000-memory.dmp	family_gandcrab
behavioral1/memory/2128-13-0x0000000000400000-0x000000000042C000-memory.dmp	family_gandcrab

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

b68dc553317d59f38d4894455b991100_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\lqdsrzlwrib = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\kgurdg.exe\""	b68dc553317d59f38d4894455b991100_JaffaCakes118.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:

b68dc553317d59f38d4894455b991100_JaffaCakes118.exe

description	ioc	process
File opened (read-only)	\??\R:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\Z:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\G:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\H:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\N:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\P:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\T:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\U:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\X:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\Y:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\K:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\O:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\Q:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\S:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\A:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\B:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\J:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\V:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\W:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\E:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\I:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\L:	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
File opened (read-only)	\??\M:	b68dc553317d59f38d4894455b991100_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:

b68dc553317d59f38d4894455b991100_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b68dc553317d59f38d4894455b991100_JaffaCakes118.exe

pid process

2128 b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
2128 b68dc553317d59f38d4894455b991100_JaffaCakes118.exe

pid	process
2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

b68dc553317d59f38d4894455b991100_JaffaCakes118.exe

description	pid	process	target process
PID 2128 wrote to memory of 2072	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2072	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2072	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2072	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2632	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2632	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2632	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2632	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 3048	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 3048	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 3048	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 3048	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 1820	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 1820	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 1820	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 1820	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2728	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2728	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2728	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2728	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2868	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2868	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2868	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe
PID 2128 wrote to memory of 2868	2128	b68dc553317d59f38d4894455b991100_JaffaCakes118.exe	nslookup.exe

C:\Users\Admin\AppData\Local\Temp\b68dc553317d59f38d4894455b991100_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b68dc553317d59f38d4894455b991100_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2128

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns1.wowservers.ru
2⤵
PID:2072

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.wowservers.ru
2⤵
PID:2632

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns2.wowservers.ru
2⤵
PID:3048

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns1.wowservers.ru
2⤵
PID:1820

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns1.wowservers.ru
2⤵
PID:2728

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.wowservers.ru
2⤵
PID:2868

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

memory/2128-0-0x00000000002B0000-0x00000000002CB000-memory.dmp

Filesize
108KB

Download
memory/2128-1-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2128-2-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/2128-3-0x00000000002D0000-0x00000000002E7000-memory.dmp

Filesize
92KB

Download
memory/2128-5-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/2128-13-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download