gandcrab | ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99

Analysis

max time kernel
140s
max time network
145s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
24-11-2024 19:24

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General

Target

ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
Size

240KB
MD5

6aff744d9364e621e071a92aff7ebd4f
SHA1

2e4648fb6542e0ca4b3d79ce10c4a6572bbc621b
SHA256

ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99
SHA512

1ea14073a821450f10424d79296de58da354fae3cc9910eb42fed60614d2d0710c697a0b18176c8263d08dc837c0ecb6de9a3d3b31accd80512ac15afd0ed0b9
SSDEEP

3072:LYHVHd2NwMqqDL2/mr3IdE8we0Avu5r++ygLIaa4jRv9OtNZpHkc:LycqqDL6oREzZpEc

Score

10^/10

gandcrab backdoor discovery persistence ransomware upx

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral1/memory/2124-0-0x0000000000400000-0x000000000043C000-memory.dmp	family_gandcrab
behavioral1/memory/2124-4-0x0000000000400000-0x000000000043C000-memory.dmp	family_gandcrab

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Gandcrab family
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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\zipfobrpvxp = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe"	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.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)	\??\L:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\P:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\V:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\Y:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\J:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\H:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\N:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\O:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\Q:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\R:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\Z:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\B:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\G:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\K:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\M:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\S:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\U:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\W:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\X:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\A:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\I:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\T:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
File opened (read-only)	\??\E:	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2124-0-0x0000000000400000-0x000000000043C000-memory.dmp	upx
behavioral1/memory/2124-4-0x0000000000400000-0x000000000043C000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 15 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	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
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	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe

Suspicious use of WriteProcessMemory 56 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2860	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	29
PID 2124 wrote to memory of 2860	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	29
PID 2124 wrote to memory of 2860	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	29
PID 2124 wrote to memory of 2860	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	29
PID 2124 wrote to memory of 1720	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	32
PID 2124 wrote to memory of 1720	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	32
PID 2124 wrote to memory of 1720	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	32
PID 2124 wrote to memory of 1720	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	32
PID 2124 wrote to memory of 2712	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	34
PID 2124 wrote to memory of 2712	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	34
PID 2124 wrote to memory of 2712	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	34
PID 2124 wrote to memory of 2712	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	34
PID 2124 wrote to memory of 2600	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	36
PID 2124 wrote to memory of 2600	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	36
PID 2124 wrote to memory of 2600	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	36
PID 2124 wrote to memory of 2600	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	36
PID 2124 wrote to memory of 2416	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	38
PID 2124 wrote to memory of 2416	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	38
PID 2124 wrote to memory of 2416	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	38
PID 2124 wrote to memory of 2416	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	38
PID 2124 wrote to memory of 2092	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	40
PID 2124 wrote to memory of 2092	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	40
PID 2124 wrote to memory of 2092	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	40
PID 2124 wrote to memory of 2092	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	40
PID 2124 wrote to memory of 2800	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	42
PID 2124 wrote to memory of 2800	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	42
PID 2124 wrote to memory of 2800	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	42
PID 2124 wrote to memory of 2800	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	42
PID 2124 wrote to memory of 2300	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	44
PID 2124 wrote to memory of 2300	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	44
PID 2124 wrote to memory of 2300	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	44
PID 2124 wrote to memory of 2300	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	44
PID 2124 wrote to memory of 2016	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	46
PID 2124 wrote to memory of 2016	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	46
PID 2124 wrote to memory of 2016	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	46
PID 2124 wrote to memory of 2016	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	46
PID 2124 wrote to memory of 1996	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	48
PID 2124 wrote to memory of 1996	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	48
PID 2124 wrote to memory of 1996	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	48
PID 2124 wrote to memory of 1996	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	48
PID 2124 wrote to memory of 2240	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	50
PID 2124 wrote to memory of 2240	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	50
PID 2124 wrote to memory of 2240	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	50
PID 2124 wrote to memory of 2240	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	50
PID 2124 wrote to memory of 2260	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	52
PID 2124 wrote to memory of 2260	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	52
PID 2124 wrote to memory of 2260	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	52
PID 2124 wrote to memory of 2260	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	52
PID 2124 wrote to memory of 2212	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	54
PID 2124 wrote to memory of 2212	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	54
PID 2124 wrote to memory of 2212	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	54
PID 2124 wrote to memory of 2212	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	54
PID 2124 wrote to memory of 1552	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	56
PID 2124 wrote to memory of 1552	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	56
PID 2124 wrote to memory of 1552	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	56
PID 2124 wrote to memory of 1552	2124	ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe	56

C:\Users\Admin\AppData\Local\Temp\ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.exe
"C:\Users\Admin\AppData\Local\Temp\ef55360b0b8e60b9a4166fd0f0a39ee42cbfd6eb1dcbba72b0be83137cd80b99.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:2124
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2860
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1720
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2712
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2600
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2416
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2092
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2300
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2016
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1996
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2260
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1552

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2124-0-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2124-4-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download