gandcrab | 39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa

General

Target

39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
Size

274KB
MD5

9ae228d810db0b94f3d24d2e40efcdd9
SHA1

72d9096e3fce5d5e8640812ea55917fc3b3cdac7
SHA256

39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa
SHA512

0f251e9f4815b73eb2a183a481bf5c0f40e0a5d4536351c419d474108cf01bb8295b9f0ba5ee0d4d8f65d4c642c9bcb6ec44f1416fe4a3ba545304fecd614c38

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/660-115-0x00000000005D0000-0x00000000005E7000-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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\cwlwdgaknef = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\tltsbw.exe\""	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe

Enumerates connected drives 3 TTPs 24 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:

39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe

description	ioc	process
File opened (read-only)	\??\P:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\Q:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\G:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\J:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\L:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\M:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\E:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\F:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\S:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\V:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\W:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\X:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\B:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\H:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\K:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\R:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\Z:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\T:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\U:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\Y:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\A:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\I:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\N:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
File opened (read-only)	\??\O:	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.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:

39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe

pid	process
660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe

description	pid	process	target process
PID 660 wrote to memory of 184	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 184	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 184	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 2032	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 2032	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 2032	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 2796	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 2796	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 2796	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 3560	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 3560	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 3560	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 1276	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 1276	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 1276	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 3888	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 3888	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 3888	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 668	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 668	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe
PID 660 wrote to memory of 668	660	39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe	nslookup.exe

C:\Users\Admin\AppData\Local\Temp\39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe
"C:\Users\Admin\AppData\Local\Temp\39e7d5c773cc54ade20c6817b4c0e44466c3b9722c96a1437b3c6bc34b520caa.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:660

C:\Windows\SysWOW64\nslookup.exe
nslookup zonealarm.bit ns1.corp-servers.ru
2⤵
PID:184

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.corp-servers.ru
2⤵
PID:2032

C:\Windows\SysWOW64\nslookup.exe
nslookup zonealarm.bit ns2.corp-servers.ru
2⤵
PID:2796

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns1.corp-servers.ru
2⤵
PID:3560

C:\Windows\SysWOW64\nslookup.exe
nslookup zonealarm.bit ns1.corp-servers.ru
2⤵
PID:1276

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.corp-servers.ru
2⤵
PID:3888

C:\Windows\SysWOW64\nslookup.exe
nslookup zonealarm.bit ns2.corp-servers.ru
2⤵
PID:668

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/184-116-0x0000000000000000-mapping.dmp

Download
memory/660-114-0x0000000000400000-0x000000000055C000-memory.dmp

Filesize
1.4MB

Download
memory/660-115-0x00000000005D0000-0x00000000005E7000-memory.dmp

Filesize
92KB

Download
memory/668-122-0x0000000000000000-mapping.dmp

Download
memory/1276-120-0x0000000000000000-mapping.dmp

Download
memory/2032-117-0x0000000000000000-mapping.dmp

Download
memory/2796-118-0x0000000000000000-mapping.dmp

Download
memory/3560-119-0x0000000000000000-mapping.dmp

Download
memory/3888-121-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads