gandcrab | ac245974117b08a67af82eb97f66ffd758c50a5dfba589a0c6a5d79651cddd88

Analysis

max time kernel
141s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
23-07-2023 15:54

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General

Target

NA_NA_119237d57494f2exeexe_JC.exe
Size

145KB
MD5

119237d57494f2ffe226bffc0a8ff5dd
SHA1

38f4889e1dca287d4036691f88cd40ab211cfea1
SHA256

ac245974117b08a67af82eb97f66ffd758c50a5dfba589a0c6a5d79651cddd88
SHA512

7e9ee18e20efb99fbe320c566a1e2dd9cdc956bfe73676aa22e29f89b97065b4c0bf10d5fec5be284efadd877bfb84e04c670cb520cd1d8e5ba05c1681292b87
SSDEEP

3072:vYHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:vyOqqDL64vdGREz

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/3420-133-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab
behavioral2/memory/3420-137-0x0000000000400000-0x0000000000428000-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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1043950675-1972537973-2972532878-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce	NA_NA_119237d57494f2exeexe_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1043950675-1972537973-2972532878-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\bstfjkepufk = "C:\\Users\\Admin\\AppData\\Local\\Temp\\NA_NA_119237d57494f2exeexe_JC.exe"	NA_NA_119237d57494f2exeexe_JC.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)	\??\B:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\H:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\I:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\O:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\S:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\T:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\V:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\A:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\G:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\X:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\Z:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\Y:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\L:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\N:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\P:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\Q:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\R:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\U:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\W:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\E:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\J:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\K:	NA_NA_119237d57494f2exeexe_JC.exe
File opened (read-only)	\??\M:	NA_NA_119237d57494f2exeexe_JC.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	NA_NA_119237d57494f2exeexe_JC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	NA_NA_119237d57494f2exeexe_JC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	NA_NA_119237d57494f2exeexe_JC.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3420	NA_NA_119237d57494f2exeexe_JC.exe
3420	NA_NA_119237d57494f2exeexe_JC.exe
3420	NA_NA_119237d57494f2exeexe_JC.exe
3420	NA_NA_119237d57494f2exeexe_JC.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 396	3420	NA_NA_119237d57494f2exeexe_JC.exe	85
PID 3420 wrote to memory of 396	3420	NA_NA_119237d57494f2exeexe_JC.exe	85
PID 3420 wrote to memory of 396	3420	NA_NA_119237d57494f2exeexe_JC.exe	85
PID 3420 wrote to memory of 1292	3420	NA_NA_119237d57494f2exeexe_JC.exe	97
PID 3420 wrote to memory of 1292	3420	NA_NA_119237d57494f2exeexe_JC.exe	97
PID 3420 wrote to memory of 1292	3420	NA_NA_119237d57494f2exeexe_JC.exe	97
PID 3420 wrote to memory of 344	3420	NA_NA_119237d57494f2exeexe_JC.exe	101
PID 3420 wrote to memory of 344	3420	NA_NA_119237d57494f2exeexe_JC.exe	101
PID 3420 wrote to memory of 344	3420	NA_NA_119237d57494f2exeexe_JC.exe	101
PID 3420 wrote to memory of 4740	3420	NA_NA_119237d57494f2exeexe_JC.exe	105
PID 3420 wrote to memory of 4740	3420	NA_NA_119237d57494f2exeexe_JC.exe	105
PID 3420 wrote to memory of 4740	3420	NA_NA_119237d57494f2exeexe_JC.exe	105
PID 3420 wrote to memory of 3476	3420	NA_NA_119237d57494f2exeexe_JC.exe	107
PID 3420 wrote to memory of 3476	3420	NA_NA_119237d57494f2exeexe_JC.exe	107
PID 3420 wrote to memory of 3476	3420	NA_NA_119237d57494f2exeexe_JC.exe	107
PID 3420 wrote to memory of 4632	3420	NA_NA_119237d57494f2exeexe_JC.exe	109
PID 3420 wrote to memory of 4632	3420	NA_NA_119237d57494f2exeexe_JC.exe	109
PID 3420 wrote to memory of 4632	3420	NA_NA_119237d57494f2exeexe_JC.exe	109
PID 3420 wrote to memory of 4296	3420	NA_NA_119237d57494f2exeexe_JC.exe	111
PID 3420 wrote to memory of 4296	3420	NA_NA_119237d57494f2exeexe_JC.exe	111
PID 3420 wrote to memory of 4296	3420	NA_NA_119237d57494f2exeexe_JC.exe	111
PID 3420 wrote to memory of 1388	3420	NA_NA_119237d57494f2exeexe_JC.exe	114
PID 3420 wrote to memory of 1388	3420	NA_NA_119237d57494f2exeexe_JC.exe	114
PID 3420 wrote to memory of 1388	3420	NA_NA_119237d57494f2exeexe_JC.exe	114
PID 3420 wrote to memory of 4356	3420	NA_NA_119237d57494f2exeexe_JC.exe	116
PID 3420 wrote to memory of 4356	3420	NA_NA_119237d57494f2exeexe_JC.exe	116
PID 3420 wrote to memory of 4356	3420	NA_NA_119237d57494f2exeexe_JC.exe	116
PID 3420 wrote to memory of 2168	3420	NA_NA_119237d57494f2exeexe_JC.exe	118
PID 3420 wrote to memory of 2168	3420	NA_NA_119237d57494f2exeexe_JC.exe	118
PID 3420 wrote to memory of 2168	3420	NA_NA_119237d57494f2exeexe_JC.exe	118
PID 3420 wrote to memory of 4612	3420	NA_NA_119237d57494f2exeexe_JC.exe	120
PID 3420 wrote to memory of 4612	3420	NA_NA_119237d57494f2exeexe_JC.exe	120
PID 3420 wrote to memory of 4612	3420	NA_NA_119237d57494f2exeexe_JC.exe	120
PID 3420 wrote to memory of 3488	3420	NA_NA_119237d57494f2exeexe_JC.exe	122
PID 3420 wrote to memory of 3488	3420	NA_NA_119237d57494f2exeexe_JC.exe	122
PID 3420 wrote to memory of 3488	3420	NA_NA_119237d57494f2exeexe_JC.exe	122
PID 3420 wrote to memory of 400	3420	NA_NA_119237d57494f2exeexe_JC.exe	124
PID 3420 wrote to memory of 400	3420	NA_NA_119237d57494f2exeexe_JC.exe	124
PID 3420 wrote to memory of 400	3420	NA_NA_119237d57494f2exeexe_JC.exe	124
PID 3420 wrote to memory of 4392	3420	NA_NA_119237d57494f2exeexe_JC.exe	126
PID 3420 wrote to memory of 4392	3420	NA_NA_119237d57494f2exeexe_JC.exe	126
PID 3420 wrote to memory of 4392	3420	NA_NA_119237d57494f2exeexe_JC.exe	126

C:\Users\Admin\AppData\Local\Temp\NA_NA_119237d57494f2exeexe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NA_NA_119237d57494f2exeexe_JC.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:396
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1292
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:344
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:4740
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:3476
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:4632
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:4296
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1388
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:4356
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2168
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:4612
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:3488
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:400
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:4392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3420-133-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/3420-137-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download