gandcrab | e6b3e4a9b07ae7f2dacb990532b1f5c1f6d9777323d51d77ae017f5c46c82568

General

Target

2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
Size

265KB
MD5

fb5ee4b7a438aca4e8a822fc0fbbbb7c
SHA1

9988d5010603aefa07c81db773fb87d3b625da9f
SHA256

e6b3e4a9b07ae7f2dacb990532b1f5c1f6d9777323d51d77ae017f5c46c82568
SHA512

90ef5b080e65af55fec85edb85d27d59ec0eeedf5af7869feed3b647cf05a41d6a016dd473f1505a92e2e52c48bf75b48a85bb2cd85011bf6a131335caea580b
SSDEEP

3072:Iv5tt9cXgoEJk/N77w1ixVJgLzhUkNp2fAhz1WLNoXE1e3GcCFK/ksMRRpwzvjDo:IvSgnk/NgSJqzhUU2fa1WKXIOTzjELEG

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 4 IoCs

resource	yara_rule
behavioral1/memory/2060-1-0x0000000000400000-0x000000000055A000-memory.dmp	family_gandcrab
behavioral1/memory/2060-3-0x00000000002D0000-0x00000000002E7000-memory.dmp	family_gandcrab
behavioral1/memory/2060-10-0x0000000000400000-0x000000000055A000-memory.dmp	family_gandcrab
behavioral1/memory/2060-13-0x00000000002D0000-0x00000000002E7000-memory.dmp	family_gandcrab

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

Detects Reflective DLL injection artifacts 4 IoCs

resource	yara_rule
behavioral1/memory/2060-1-0x0000000000400000-0x000000000055A000-memory.dmp	INDICATOR_SUSPICIOUS_ReflectiveLoader
behavioral1/memory/2060-3-0x00000000002D0000-0x00000000002E7000-memory.dmp	INDICATOR_SUSPICIOUS_ReflectiveLoader
behavioral1/memory/2060-10-0x0000000000400000-0x000000000055A000-memory.dmp	INDICATOR_SUSPICIOUS_ReflectiveLoader
behavioral1/memory/2060-13-0x00000000002D0000-0x00000000002E7000-memory.dmp	INDICATOR_SUSPICIOUS_ReflectiveLoader

Detects ransomware indicator 4 IoCs

resource	yara_rule
behavioral1/memory/2060-1-0x0000000000400000-0x000000000055A000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20
behavioral1/memory/2060-3-0x00000000002D0000-0x00000000002E7000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20
behavioral1/memory/2060-10-0x0000000000400000-0x000000000055A000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20
behavioral1/memory/2060-13-0x00000000002D0000-0x00000000002E7000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20

Gandcrab Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2060-1-0x0000000000400000-0x000000000055A000-memory.dmp	Gandcrab
behavioral1/memory/2060-3-0x00000000002D0000-0x00000000002E7000-memory.dmp	Gandcrab
behavioral1/memory/2060-10-0x0000000000400000-0x000000000055A000-memory.dmp	Gandcrab
behavioral1/memory/2060-13-0x00000000002D0000-0x00000000002E7000-memory.dmp	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-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\nryeljcyvde = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\oztqmu.exe\""	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_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)	\??\G:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\H:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\K:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\Q:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\S:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\Y:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\Z:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\E:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\J:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\N:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\B:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\P:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\R:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\V:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\X:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\M:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\I:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\L:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\O:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\T:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\U:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\W:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
File opened (read-only)	\??\A:	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3028	2060	WerFault.exe	19

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	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2060	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
2060	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 3028	2060	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe	28
PID 2060 wrote to memory of 3028	2060	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe	28
PID 2060 wrote to memory of 3028	2060	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe	28
PID 2060 wrote to memory of 3028	2060	2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_fb5ee4b7a438aca4e8a822fc0fbbbb7c_karagany_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:2060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 708
  2⤵
  - Program crash
  PID:3028

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/2060-1-0x0000000000400000-0x000000000055A000-memory.dmp

Filesize
1.4MB

Download
memory/2060-2-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/2060-3-0x00000000002D0000-0x00000000002E7000-memory.dmp

Filesize
92KB

Download
memory/2060-10-0x0000000000400000-0x000000000055A000-memory.dmp

Filesize
1.4MB

Download
memory/2060-12-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/2060-13-0x00000000002D0000-0x00000000002E7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads