gandcrab | d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb

General

Target

d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
Size

297KB
MD5

5f207a80fa7b3bd94111284dd6e2ae6d
SHA1

84c53fa72eff7540550edacf28119b00f18ef13e
SHA256

d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb
SHA512

7c48da9db89a4a926e8d723b3c00ba1eae0b30a651088c61f9693d95b2a43961dfb8f1575f2b3b319606a1371027b3b40a6d50e015a6108f908a1f2a4ff44bc2

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4044-115-0x00000000001E0000-0x00000000001F6000-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:

d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\wfiuduevdlj = "C:\\Users\\Admin\\AppData\\Local\\Temp\\d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe"	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.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:

d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe

description	ioc	process
File opened (read-only)	\??\O:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\F:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\G:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\H:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\J:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\K:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\L:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\N:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\P:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\W:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\Z:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\A:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\B:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\E:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\U:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\V:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\Y:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\M:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\Q:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\T:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\X:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\I:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\R:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
File opened (read-only)	\??\S:	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.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:

d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe

pid	process
4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe

description	pid	process	target process
PID 4044 wrote to memory of 2460	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 2460	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 2460	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 3620	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 3620	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 3620	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 1484	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 1484	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 1484	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 2080	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 2080	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 2080	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 3956	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 3956	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 3956	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 2372	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 2372	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 2372	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 1628	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 1628	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe
PID 4044 wrote to memory of 1628	4044	d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe	nslookup.exe

C:\Users\Admin\AppData\Local\Temp\d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe
"C:\Users\Admin\AppData\Local\Temp\d99a9787b92e10472b7b264e27e25bcb445f2e16f390eb005dc07f0543e300bb.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4044

C:\Windows\SysWOW64\nslookup.exe
nslookup politiaromana.bit ns1.virmach.ru
2⤵
PID:2460

C:\Windows\SysWOW64\nslookup.exe
nslookup malwarehunterteam.bit ns1.virmach.ru
2⤵
PID:3620

C:\Windows\SysWOW64\nslookup.exe
nslookup gdcb.bit ns2.virmach.ru
2⤵
PID:1484

C:\Windows\SysWOW64\nslookup.exe
nslookup politiaromana.bit ns2.virmach.ru
2⤵
PID:2080

C:\Windows\SysWOW64\nslookup.exe
nslookup malwarehunterteam.bit ns2.virmach.ru
2⤵
PID:3956

C:\Windows\SysWOW64\nslookup.exe
nslookup gdcb.bit ns1.virmach.ru
2⤵
PID:2372

C:\Windows\SysWOW64\nslookup.exe
nslookup politiaromana.bit ns1.virmach.ru
2⤵
PID:1628

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/1484-118-0x0000000000000000-mapping.dmp

Download
memory/1628-122-0x0000000000000000-mapping.dmp

Download
memory/2080-119-0x0000000000000000-mapping.dmp

Download
memory/2372-121-0x0000000000000000-mapping.dmp

Download
memory/2460-116-0x0000000000000000-mapping.dmp

Download
memory/3620-117-0x0000000000000000-mapping.dmp

Download
memory/3956-120-0x0000000000000000-mapping.dmp

Download
memory/4044-114-0x0000000000400000-0x0000000000E84000-memory.dmp

Filesize
10.5MB

Download
memory/4044-115-0x00000000001E0000-0x00000000001F6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads