gandcrab | b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 11:13

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General

Target

b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
Size

240KB
MD5

13e954a87528e640b5b07ecb7b734c2a
SHA1

f56431bb6a91fdb107765e9e5c3fea3bf48759e8
SHA256

b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d
SHA512

49453814223d89e890db7d5255073f045014302f3acd79e043f80c12e56b076d473f904bb48030770fe198dd248ed1b193115d8e552868fe622c1c98cd509dcd
SSDEEP

3072:YYHVHd2NwMqqDL2/mr3IdE8we0Avu5r++ygLIaa4jRv9OtNZpHkE:YycqqDL6oREzZpEE

Score

10^/10

gandcrab backdoor discovery persistence ransomware upx

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral1/memory/2116-0-0x0000000000400000-0x000000000043C000-memory.dmp	family_gandcrab
behavioral1/memory/2116-4-0x0000000000400000-0x000000000043C000-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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\szqcsimzinr = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe"	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.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)	\??\Q:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\V:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\W:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\X:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\Z:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\B:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\H:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\M:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\K:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\L:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\P:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\S:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\U:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\A:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\G:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\O:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\N:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\R:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\T:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\Y:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\E:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\I:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
File opened (read-only)	\??\J:	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2116-0-0x0000000000400000-0x000000000043C000-memory.dmp	upx
behavioral1/memory/2116-4-0x0000000000400000-0x000000000043C000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 16 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	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.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

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	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2256	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	31
PID 2116 wrote to memory of 2256	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	31
PID 2116 wrote to memory of 2256	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	31
PID 2116 wrote to memory of 2256	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	31
PID 2116 wrote to memory of 2284	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	33
PID 2116 wrote to memory of 2284	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	33
PID 2116 wrote to memory of 2284	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	33
PID 2116 wrote to memory of 2284	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	33
PID 2116 wrote to memory of 2816	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	36
PID 2116 wrote to memory of 2816	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	36
PID 2116 wrote to memory of 2816	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	36
PID 2116 wrote to memory of 2816	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	36
PID 2116 wrote to memory of 2680	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	38
PID 2116 wrote to memory of 2680	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	38
PID 2116 wrote to memory of 2680	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	38
PID 2116 wrote to memory of 2680	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	38
PID 2116 wrote to memory of 1964	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	40
PID 2116 wrote to memory of 1964	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	40
PID 2116 wrote to memory of 1964	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	40
PID 2116 wrote to memory of 1964	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	40
PID 2116 wrote to memory of 1308	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	42
PID 2116 wrote to memory of 1308	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	42
PID 2116 wrote to memory of 1308	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	42
PID 2116 wrote to memory of 1308	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	42
PID 2116 wrote to memory of 2940	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	44
PID 2116 wrote to memory of 2940	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	44
PID 2116 wrote to memory of 2940	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	44
PID 2116 wrote to memory of 2940	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	44
PID 2116 wrote to memory of 2804	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	46
PID 2116 wrote to memory of 2804	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	46
PID 2116 wrote to memory of 2804	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	46
PID 2116 wrote to memory of 2804	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	46
PID 2116 wrote to memory of 1312	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	48
PID 2116 wrote to memory of 1312	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	48
PID 2116 wrote to memory of 1312	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	48
PID 2116 wrote to memory of 1312	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	48
PID 2116 wrote to memory of 2968	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	50
PID 2116 wrote to memory of 2968	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	50
PID 2116 wrote to memory of 2968	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	50
PID 2116 wrote to memory of 2968	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	50
PID 2116 wrote to memory of 2288	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	52
PID 2116 wrote to memory of 2288	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	52
PID 2116 wrote to memory of 2288	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	52
PID 2116 wrote to memory of 2288	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	52
PID 2116 wrote to memory of 1076	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	54
PID 2116 wrote to memory of 1076	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	54
PID 2116 wrote to memory of 1076	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	54
PID 2116 wrote to memory of 1076	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	54
PID 2116 wrote to memory of 1124	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	56
PID 2116 wrote to memory of 1124	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	56
PID 2116 wrote to memory of 1124	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	56
PID 2116 wrote to memory of 1124	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	56
PID 2116 wrote to memory of 1664	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	58
PID 2116 wrote to memory of 1664	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	58
PID 2116 wrote to memory of 1664	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	58
PID 2116 wrote to memory of 1664	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	58
PID 2116 wrote to memory of 980	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	60
PID 2116 wrote to memory of 980	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	60
PID 2116 wrote to memory of 980	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	60
PID 2116 wrote to memory of 980	2116	b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe	60

C:\Users\Admin\AppData\Local\Temp\b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.exe
"C:\Users\Admin\AppData\Local\Temp\b1841d74fadb248b93948a491cd246f806f5d54eb9c86f7f4f39dea7f171d43d.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:2116
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2284
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1964
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1308
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1312
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1076
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1124
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1664
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:980

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

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Downloads

memory/2116-0-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2116-4-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download