gandcrab | f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419

General

Target

f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
Size

145KB
MD5

79be0e626c75a27e0b7be62ad38696ad
SHA1

56772963ed884f454e8d915c2b77d7174980edcd
SHA256

f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419
SHA512

084993d8f9e3bdeda20d956bf5bcf8e31176fed246557f477bf8fcf788f3b682e51fac6f988fe83fa84d2a2c29a134d203fab9f1d42234e75dd3c3dfa8ea8233
SSDEEP

3072:iYHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:iyOqqDL64vdGREz

Score

10^/10

gandcrab backdoor discovery persistence ransomware

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral1/memory/2644-0-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab
behavioral1/memory/2644-4-0x0000000000400000-0x0000000000428000-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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\rhvsmzzizyk = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe"	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.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

description	ioc	Process
File opened (read-only)	\??\K:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\O:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\Y:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\E:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\G:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\J:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\V:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\L:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\R:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\S:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\Q:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\T:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\W:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\Z:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\B:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\I:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\N:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\P:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\U:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\X:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\A:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\H:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
File opened (read-only)	\??\M:	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 2668	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	30
PID 2644 wrote to memory of 2668	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	30
PID 2644 wrote to memory of 2668	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	30
PID 2644 wrote to memory of 2668	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	30
PID 2644 wrote to memory of 2532	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	33
PID 2644 wrote to memory of 2532	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	33
PID 2644 wrote to memory of 2532	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	33
PID 2644 wrote to memory of 2532	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	33
PID 2644 wrote to memory of 2948	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	35
PID 2644 wrote to memory of 2948	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	35
PID 2644 wrote to memory of 2948	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	35
PID 2644 wrote to memory of 2948	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	35
PID 2644 wrote to memory of 540	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	37
PID 2644 wrote to memory of 540	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	37
PID 2644 wrote to memory of 540	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	37
PID 2644 wrote to memory of 540	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	37
PID 2644 wrote to memory of 2376	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	39
PID 2644 wrote to memory of 2376	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	39
PID 2644 wrote to memory of 2376	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	39
PID 2644 wrote to memory of 2376	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	39
PID 2644 wrote to memory of 800	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	41
PID 2644 wrote to memory of 800	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	41
PID 2644 wrote to memory of 800	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	41
PID 2644 wrote to memory of 800	2644	f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe	41

C:\Users\Admin\AppData\Local\Temp\f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe
"C:\Users\Admin\AppData\Local\Temp\f7c254cfe18291794f615841deeffdebf7f3c8dccc3f7ed2cfb4e9d3a97f3419.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2668
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2532
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:540
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2644-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2644-4-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads