gandcrab | a7aa02c550d3c22046909621b5c5d36058eb81310197cbbe7550118eeda2e44d

Analysis

max time kernel
142s
max time network
147s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
16-06-2024 06:49

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General

Target

2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
Size

167KB
MD5

71d839f93d3f1b709e82edd3501ee3bf
SHA1

3f1a3e035337ce121bd7429bf038fb700ca27165
SHA256

a7aa02c550d3c22046909621b5c5d36058eb81310197cbbe7550118eeda2e44d
SHA512

5f8bfac127fd2297a44715da60e372cd4e4974bc10bf7c9893595c04bc728ddb4c255f5d63712223983e6fdbf6f3d539257135d7ebf09650618b4ab1ba8e72ba
SSDEEP

3072:gYHVHd2NFMqqDL2/mr3IdE8we0Avu5r++ygLIaa4jRv9OtNZped:gyZqqDL6oREzZpK

Score

10^/10

gandcrab backdoor persistence ransomware upx

Malware Config

Signatures

GandCrab payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2980-0-0x0000000000400000-0x000000000042C000-memory.dmp	family_gandcrab
behavioral1/memory/2980-4-0x0000000000400000-0x000000000042C000-memory.dmp	family_gandcrab

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

Detects ransomware indicator 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2980-0-0x0000000000400000-0x000000000042C000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20
behavioral1/memory/2980-4-0x0000000000400000-0x000000000042C000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20

Gandcrab Payload 2 IoCs

Processes:

resource yara_rule

behavioral1/memory/2980-0-0x0000000000400000-0x000000000042C000-memory.dmp Gandcrab
behavioral1/memory/2980-4-0x0000000000400000-0x000000000042C000-memory.dmp Gandcrab
UPX dump on OEP (original entry point) 2 IoCs

Processes:

resource yara_rule

behavioral1/memory/2980-0-0x0000000000400000-0x000000000042C000-memory.dmp UPX
behavioral1/memory/2980-4-0x0000000000400000-0x000000000042C000-memory.dmp UPX
UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
upx

Processes:

resource yara_rule

behavioral1/memory/2980-0-0x0000000000400000-0x000000000042C000-memory.dmp upx
behavioral1/memory/2980-4-0x0000000000400000-0x000000000042C000-memory.dmp upx

resource	yara_rule
behavioral1/memory/2980-0-0x0000000000400000-0x000000000042C000-memory.dmp	Gandcrab
behavioral1/memory/2980-4-0x0000000000400000-0x000000000042C000-memory.dmp	Gandcrab

resource	yara_rule
behavioral1/memory/2980-0-0x0000000000400000-0x000000000042C000-memory.dmp	UPX
behavioral1/memory/2980-4-0x0000000000400000-0x000000000042C000-memory.dmp	UPX

resource	yara_rule
behavioral1/memory/2980-0-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral1/memory/2980-4-0x0000000000400000-0x000000000042C000-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:

2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\gsspkttnkcb = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe"	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.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:

2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe

description	ioc	process
File opened (read-only)	\??\S:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\U:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\A:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\Q:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\P:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\T:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\X:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\E:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\H:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\K:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\L:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\N:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\V:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\G:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\J:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\M:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\O:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\R:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\W:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\Y:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\Z:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\B:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
File opened (read-only)	\??\I:	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.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:

2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe

pid process

2980 2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
2980 2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe

pid	process
2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe

description	pid	process	target process
PID 2980 wrote to memory of 2268	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 2268	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 2268	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 2268	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 2348	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 2348	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 2348	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 2348	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1640	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1640	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1640	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1640	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1340	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1340	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1340	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1340	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1684	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1684	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1684	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe
PID 2980 wrote to memory of 1684	2980	2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe	nslookup.exe

C:\Users\Admin\AppData\Local\Temp\2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-16_71d839f93d3f1b709e82edd3501ee3bf_gandcrab.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2980

C:\Windows\SysWOW64\nslookup.exe
nslookup nomoreransom.bit dns1.soprodns.ru
2⤵
PID:2268

C:\Windows\SysWOW64\nslookup.exe
nslookup emsisoft.bit dns1.soprodns.ru
2⤵
PID:2348

C:\Windows\SysWOW64\nslookup.exe
nslookup gandcrab.bit dns1.soprodns.ru
2⤵
PID:1640

C:\Windows\SysWOW64\nslookup.exe
nslookup nomoreransom.bit dns1.soprodns.ru
2⤵
PID:1340

C:\Windows\SysWOW64\nslookup.exe
nslookup emsisoft.bit dns1.soprodns.ru
2⤵
PID:1684

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

memory/2980-0-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2980-4-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download