gandcrab | 107957aeb05f67e3f8b23da5ff8cd4b93badbbc9b091cb6677fcca4a01a0d846

General

Target

81b9f50bd9a95b439d3b59743be57d37.exe
Size

250KB
MD5

81b9f50bd9a95b439d3b59743be57d37
SHA1

51238aeb43963f0ca398fa66c541403681dc3d8b
SHA256

107957aeb05f67e3f8b23da5ff8cd4b93badbbc9b091cb6677fcca4a01a0d846
SHA512

15e16ec2093744e9865b5a03f0e11f3e7afee6dea8626cd6f60a94947499da3ec08463daa8d41932a879a6f6a7c036a729a66ce596d6837446014675cde59b96
SSDEEP

3072:U/yK5d0Gj0+nY3uEBLvBNfdUR2/qFnB8o2+vU3WuvIBuj00nReaXkuSQ7cdOd3:U/y20Gj0r+EBFrkvlU3RvIUDOIN

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2236-4-0x0000000000400000-0x0000000000444000-memory.dmp	family_gandcrab
behavioral1/memory/2236-5-0x0000000000450000-0x0000000000467000-memory.dmp	family_gandcrab
behavioral1/memory/2236-7-0x0000000000400000-0x0000000000444000-memory.dmp	family_gandcrab
behavioral1/memory/2236-16-0x0000000000450000-0x0000000000467000-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:

81b9f50bd9a95b439d3b59743be57d37.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\ievqmgrmylc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\cezzeg.exe\""	81b9f50bd9a95b439d3b59743be57d37.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:

81b9f50bd9a95b439d3b59743be57d37.exe

description	ioc	process
File opened (read-only)	\??\L:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\N:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\R:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\H:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\T:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\X:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\Y:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\Q:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\U:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\W:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\B:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\G:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\J:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\K:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\M:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\S:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\V:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\Z:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\A:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\E:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\I:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\O:	81b9f50bd9a95b439d3b59743be57d37.exe
File opened (read-only)	\??\P:	81b9f50bd9a95b439d3b59743be57d37.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:

81b9f50bd9a95b439d3b59743be57d37.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	81b9f50bd9a95b439d3b59743be57d37.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	81b9f50bd9a95b439d3b59743be57d37.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	81b9f50bd9a95b439d3b59743be57d37.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

81b9f50bd9a95b439d3b59743be57d37.exe

pid process

2236 81b9f50bd9a95b439d3b59743be57d37.exe
2236 81b9f50bd9a95b439d3b59743be57d37.exe

pid	process
2236	81b9f50bd9a95b439d3b59743be57d37.exe
2236	81b9f50bd9a95b439d3b59743be57d37.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

81b9f50bd9a95b439d3b59743be57d37.exe

description	pid	process	target process
PID 2236 wrote to memory of 2540	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2540	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2540	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2540	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2636	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2636	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2636	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2636	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2648	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2648	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2648	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2648	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2408	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2408	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2408	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2408	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2664	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2664	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2664	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2664	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1468	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1468	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1468	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1468	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2388	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2388	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2388	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2388	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1668	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1668	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1668	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1668	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1728	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1728	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1728	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1728	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1684	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1684	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1684	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1684	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1244	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1244	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1244	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 1244	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2204	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2204	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2204	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2204	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2336	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2336	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2336	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2336	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2748	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2748	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2748	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 2748	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 604	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 604	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 604	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 604	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 584	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 584	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 584	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe
PID 2236 wrote to memory of 584	2236	81b9f50bd9a95b439d3b59743be57d37.exe	nslookup.exe

C:\Users\Admin\AppData\Local\Temp\81b9f50bd9a95b439d3b59743be57d37.exe
"C:\Users\Admin\AppData\Local\Temp\81b9f50bd9a95b439d3b59743be57d37.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2236

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns1.wowservers.ru
2⤵
PID:2540

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.wowservers.ru
2⤵
PID:2636

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns2.wowservers.ru
2⤵
PID:2648

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns1.wowservers.ru
2⤵
PID:2408

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns1.wowservers.ru
2⤵
PID:2664

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.wowservers.ru
2⤵
PID:1468

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns2.wowservers.ru
2⤵
PID:2388

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns1.wowservers.ru
2⤵
PID:1668

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns1.wowservers.ru
2⤵
PID:1728

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.wowservers.ru
2⤵
PID:1684

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns2.wowservers.ru
2⤵
PID:1244

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns1.wowservers.ru
2⤵
PID:2204

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns1.wowservers.ru
2⤵
PID:2336

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.wowservers.ru
2⤵
PID:2748

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns2.wowservers.ru
2⤵
PID:604

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns1.wowservers.ru
2⤵
PID:584

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns1.wowservers.ru
2⤵
PID:1004

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.wowservers.ru
2⤵
PID:1724

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns2.wowservers.ru
2⤵
PID:884

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns1.wowservers.ru
2⤵
PID:1488

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns1.wowservers.ru
2⤵
PID:1232

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns2.wowservers.ru
2⤵
PID:948

C:\Windows\SysWOW64\nslookup.exe
nslookup carder.bit ns2.wowservers.ru
2⤵
PID:1664

C:\Windows\SysWOW64\nslookup.exe
nslookup ransomware.bit ns1.wowservers.ru
2⤵
PID:2724

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2236-2-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2236-3-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2236-4-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2236-5-0x0000000000450000-0x0000000000467000-memory.dmp

Filesize
92KB

Download
memory/2236-7-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2236-15-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2236-16-0x0000000000450000-0x0000000000467000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads