gandcrab | 882c8cdecc36a2ee23097d27dea0c0eb47ac907abce1ebac353f81ca38c0eeaf

General

Target

2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
Size

351KB
MD5

af020ff4838f9a9f6104c8b69e1c8234
SHA1

8fe5c7a98bf06006b682a9a72008b13815e8dc1a
SHA256

882c8cdecc36a2ee23097d27dea0c0eb47ac907abce1ebac353f81ca38c0eeaf
SHA512

6e753000dbe47a5b075d48356f5478b0df5ffd7b0fdf85b2673238e0087893527ba2b767da5f883e16a582714cc63a1aafdc6a2dad092c3a9b9f8ef4f63beed2
SSDEEP

3072:U9pNMs+Kr1wbWGjl0xjsNNeVKBNVBxKT46xl+wndfIQQOaC3QBn7/hsb2BhGZ1/N:U9pNMsLWEjsXjBATRpuuwnGD/Nj6a

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 3 IoCs

resource	yara_rule
behavioral2/memory/1568-3-0x0000000000400000-0x00000000012D6000-memory.dmp	family_gandcrab
behavioral2/memory/1568-4-0x0000000003040000-0x0000000003057000-memory.dmp	family_gandcrab
behavioral2/memory/1568-11-0x0000000003040000-0x0000000003057000-memory.dmp	family_gandcrab

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab

Detects Reflective DLL injection artifacts 3 IoCs

resource	yara_rule
behavioral2/memory/1568-3-0x0000000000400000-0x00000000012D6000-memory.dmp	INDICATOR_SUSPICIOUS_ReflectiveLoader
behavioral2/memory/1568-4-0x0000000003040000-0x0000000003057000-memory.dmp	INDICATOR_SUSPICIOUS_ReflectiveLoader
behavioral2/memory/1568-11-0x0000000003040000-0x0000000003057000-memory.dmp	INDICATOR_SUSPICIOUS_ReflectiveLoader

Detects ransomware indicator 2 IoCs

resource	yara_rule
behavioral2/memory/1568-4-0x0000000003040000-0x0000000003057000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20
behavioral2/memory/1568-11-0x0000000003040000-0x0000000003057000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20

Gandcrab Payload 3 IoCs

resource	yara_rule
behavioral2/memory/1568-3-0x0000000000400000-0x00000000012D6000-memory.dmp	Gandcrab
behavioral2/memory/1568-4-0x0000000003040000-0x0000000003057000-memory.dmp	Gandcrab
behavioral2/memory/1568-11-0x0000000003040000-0x0000000003057000-memory.dmp	Gandcrab

Unexpected DNS network traffic destination 6 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	104.155.138.21
Destination IP	104.155.138.21
Destination IP	104.155.138.21
Destination IP	104.155.138.21
Destination IP	104.155.138.21
Destination IP	104.155.138.21

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\mhqpblogbmm = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\ydspnl.exe\""	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.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)	\??\E:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\G:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\K:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\L:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\O:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\U:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\A:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\B:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\X:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\Y:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\Z:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\H:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\M:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\S:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\T:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\V:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\W:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\I:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\J:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\N:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\P:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\Q:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
File opened (read-only)	\??\R:	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4772	1568	WerFault.exe	12

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\Identifier	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 3472	1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe	93
PID 1568 wrote to memory of 3472	1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe	93
PID 1568 wrote to memory of 3472	1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe	93
PID 1568 wrote to memory of 2840	1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe	95
PID 1568 wrote to memory of 2840	1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe	95
PID 1568 wrote to memory of 2840	1568	2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_af020ff4838f9a9f6104c8b69e1c8234_mafia.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:3472
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:2840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1568 -s 1376
  2⤵
  - Program crash
  PID:4772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1568 -ip 1568
1⤵
PID:3776

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/1568-1-0x0000000001410000-0x0000000001510000-memory.dmp

Filesize
1024KB

Download
memory/1568-2-0x0000000000400000-0x00000000012D6000-memory.dmp

Filesize
14.8MB

Download
memory/1568-3-0x0000000000400000-0x00000000012D6000-memory.dmp

Filesize
14.8MB

Download
memory/1568-4-0x0000000003040000-0x0000000003057000-memory.dmp

Filesize
92KB

Download
memory/1568-11-0x0000000003040000-0x0000000003057000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads