gandcrab | a23181e145d7bc912744c3cd45f355d9ce659701b62fb8a9354210da379c317f

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
22/07/2023, 22:00

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General

Target

NA_04a31e5837dc3eexe_JC.exe
Size

145KB
MD5

04a31e5837dc3e640d67c5c4009be6ee
SHA1

42c98ca7e28467cf13a80843b11b09d22dc87a4a
SHA256

a23181e145d7bc912744c3cd45f355d9ce659701b62fb8a9354210da379c317f
SHA512

54cf5dac44e6d721ea0001c7d1c1fbbf449e3759dec7fe4ae7638aba2ec74525220d841adde0ea234d7b7a7696bacd396148bc79d1a0dd74ead95c790b86d90d
SSDEEP

3072:fYHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:fyOqqDL64vdGREz

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/1256-133-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab
behavioral2/memory/1256-137-0x0000000000400000-0x0000000000428000-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-1-5-21-4176143399-3250363947-192774652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce	NA_04a31e5837dc3eexe_JC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ilnlngytmyp = "C:\\Users\\Admin\\AppData\\Local\\Temp\\NA_04a31e5837dc3eexe_JC.exe"	NA_04a31e5837dc3eexe_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)	\??\Q:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\R:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\S:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\X:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\H:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\I:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\J:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\P:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\T:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\W:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\A:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\B:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\K:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\N:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\L:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\V:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\U:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\Y:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\Z:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\E:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\G:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\M:	NA_04a31e5837dc3eexe_JC.exe
File opened (read-only)	\??\O:	NA_04a31e5837dc3eexe_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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	NA_04a31e5837dc3eexe_JC.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	NA_04a31e5837dc3eexe_JC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	NA_04a31e5837dc3eexe_JC.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1256	NA_04a31e5837dc3eexe_JC.exe
1256	NA_04a31e5837dc3eexe_JC.exe
1256	NA_04a31e5837dc3eexe_JC.exe
1256	NA_04a31e5837dc3eexe_JC.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 1256 wrote to memory of 212	1256	NA_04a31e5837dc3eexe_JC.exe	87
PID 1256 wrote to memory of 212	1256	NA_04a31e5837dc3eexe_JC.exe	87
PID 1256 wrote to memory of 212	1256	NA_04a31e5837dc3eexe_JC.exe	87
PID 1256 wrote to memory of 1704	1256	NA_04a31e5837dc3eexe_JC.exe	100
PID 1256 wrote to memory of 1704	1256	NA_04a31e5837dc3eexe_JC.exe	100
PID 1256 wrote to memory of 1704	1256	NA_04a31e5837dc3eexe_JC.exe	100
PID 1256 wrote to memory of 2084	1256	NA_04a31e5837dc3eexe_JC.exe	102
PID 1256 wrote to memory of 2084	1256	NA_04a31e5837dc3eexe_JC.exe	102
PID 1256 wrote to memory of 2084	1256	NA_04a31e5837dc3eexe_JC.exe	102
PID 1256 wrote to memory of 3808	1256	NA_04a31e5837dc3eexe_JC.exe	105
PID 1256 wrote to memory of 3808	1256	NA_04a31e5837dc3eexe_JC.exe	105
PID 1256 wrote to memory of 3808	1256	NA_04a31e5837dc3eexe_JC.exe	105
PID 1256 wrote to memory of 4772	1256	NA_04a31e5837dc3eexe_JC.exe	108
PID 1256 wrote to memory of 4772	1256	NA_04a31e5837dc3eexe_JC.exe	108
PID 1256 wrote to memory of 4772	1256	NA_04a31e5837dc3eexe_JC.exe	108
PID 1256 wrote to memory of 1580	1256	NA_04a31e5837dc3eexe_JC.exe	110
PID 1256 wrote to memory of 1580	1256	NA_04a31e5837dc3eexe_JC.exe	110
PID 1256 wrote to memory of 1580	1256	NA_04a31e5837dc3eexe_JC.exe	110
PID 1256 wrote to memory of 1108	1256	NA_04a31e5837dc3eexe_JC.exe	112
PID 1256 wrote to memory of 1108	1256	NA_04a31e5837dc3eexe_JC.exe	112
PID 1256 wrote to memory of 1108	1256	NA_04a31e5837dc3eexe_JC.exe	112
PID 1256 wrote to memory of 1128	1256	NA_04a31e5837dc3eexe_JC.exe	114
PID 1256 wrote to memory of 1128	1256	NA_04a31e5837dc3eexe_JC.exe	114
PID 1256 wrote to memory of 1128	1256	NA_04a31e5837dc3eexe_JC.exe	114
PID 1256 wrote to memory of 1908	1256	NA_04a31e5837dc3eexe_JC.exe	117
PID 1256 wrote to memory of 1908	1256	NA_04a31e5837dc3eexe_JC.exe	117
PID 1256 wrote to memory of 1908	1256	NA_04a31e5837dc3eexe_JC.exe	117
PID 1256 wrote to memory of 3044	1256	NA_04a31e5837dc3eexe_JC.exe	119
PID 1256 wrote to memory of 3044	1256	NA_04a31e5837dc3eexe_JC.exe	119
PID 1256 wrote to memory of 3044	1256	NA_04a31e5837dc3eexe_JC.exe	119
PID 1256 wrote to memory of 4844	1256	NA_04a31e5837dc3eexe_JC.exe	121
PID 1256 wrote to memory of 4844	1256	NA_04a31e5837dc3eexe_JC.exe	121
PID 1256 wrote to memory of 4844	1256	NA_04a31e5837dc3eexe_JC.exe	121
PID 1256 wrote to memory of 688	1256	NA_04a31e5837dc3eexe_JC.exe	123
PID 1256 wrote to memory of 688	1256	NA_04a31e5837dc3eexe_JC.exe	123
PID 1256 wrote to memory of 688	1256	NA_04a31e5837dc3eexe_JC.exe	123
PID 1256 wrote to memory of 3980	1256	NA_04a31e5837dc3eexe_JC.exe	125
PID 1256 wrote to memory of 3980	1256	NA_04a31e5837dc3eexe_JC.exe	125
PID 1256 wrote to memory of 3980	1256	NA_04a31e5837dc3eexe_JC.exe	125
PID 1256 wrote to memory of 1324	1256	NA_04a31e5837dc3eexe_JC.exe	127
PID 1256 wrote to memory of 1324	1256	NA_04a31e5837dc3eexe_JC.exe	127
PID 1256 wrote to memory of 1324	1256	NA_04a31e5837dc3eexe_JC.exe	127
PID 1256 wrote to memory of 3684	1256	NA_04a31e5837dc3eexe_JC.exe	129
PID 1256 wrote to memory of 3684	1256	NA_04a31e5837dc3eexe_JC.exe	129
PID 1256 wrote to memory of 3684	1256	NA_04a31e5837dc3eexe_JC.exe	129

C:\Users\Admin\AppData\Local\Temp\NA_04a31e5837dc3eexe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NA_04a31e5837dc3eexe_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:1256
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:212
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1704
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2084
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:3808
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:4772
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:1580
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:1108
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1128
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:1908
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:3044
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:4844
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:688
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:3980
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1324
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:3684

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/1256-133-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1256-137-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download