gandcrab | 2f24fecf44b15bed9ccb5e61ff40a568dd3c8d67efc9dc994f419b8820a9bd98

General

Target

bc6fd99da017075febb34e20982394cf.exe
Size

145KB
MD5

bc6fd99da017075febb34e20982394cf
SHA1

0e9476a5ecd3777ee9473d93f924181c40b9b385
SHA256

2f24fecf44b15bed9ccb5e61ff40a568dd3c8d67efc9dc994f419b8820a9bd98
SHA512

3fa9ee1519e1ce3c5d46419f2265e2b7817ed26c2300677ddab8cb094e06cd88cb3b1bc234d1db2e0b6b5e0988ac7b507c3cdc9dd3a5a70d19df2173cafd10ec
SSDEEP

3072:NYHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:NyOqqDL64vdGREz

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 1 IoCs

resource	yara_rule
behavioral2/memory/2808-0-0x0000000000400000-0x0000000000428000-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-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ztgkabhsgkw = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bc6fd99da017075febb34e20982394cf.exe"	bc6fd99da017075febb34e20982394cf.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)	\??\W:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\Z:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\E:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\K:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\L:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\J:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\T:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\U:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\G:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\H:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\I:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\Y:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\B:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\N:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\X:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\P:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\Q:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\R:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\S:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\V:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\A:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\M:	bc6fd99da017075febb34e20982394cf.exe
File opened (read-only)	\??\O:	bc6fd99da017075febb34e20982394cf.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	bc6fd99da017075febb34e20982394cf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bc6fd99da017075febb34e20982394cf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	bc6fd99da017075febb34e20982394cf.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2808	bc6fd99da017075febb34e20982394cf.exe
2808	bc6fd99da017075febb34e20982394cf.exe
2808	bc6fd99da017075febb34e20982394cf.exe
2808	bc6fd99da017075febb34e20982394cf.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 5024	2808	bc6fd99da017075febb34e20982394cf.exe	49
PID 2808 wrote to memory of 5024	2808	bc6fd99da017075febb34e20982394cf.exe	49
PID 2808 wrote to memory of 5024	2808	bc6fd99da017075febb34e20982394cf.exe	49

C:\Users\Admin\AppData\Local\Temp\bc6fd99da017075febb34e20982394cf.exe
"C:\Users\Admin\AppData\Local\Temp\bc6fd99da017075febb34e20982394cf.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:5024
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:3068
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:3232
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:1336
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1420
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:792
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:4028
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:2140
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2484

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2808-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2808-4-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads