fe8d62008ecbdcf55a19ea2c83d266090bec39f460a8ab6b876e0da133a87796

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
06/03/2024, 01:33

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General

Target

2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe
Size

61KB
MD5

2dcd3ea6c4e00777181b7824e09d6a59
SHA1

37306abcab5540fc37f68af6db1a6b429cdb1e79
SHA256

fe8d62008ecbdcf55a19ea2c83d266090bec39f460a8ab6b876e0da133a87796
SHA512

7f8ba5b3f8f2d91f8c7601f14ae6c85d751f0a69324b07b635514b03902a23b7c16ac023dbb148aa8cf312af3ed57c74bda7137a8063afa4a3a3e4a00c190cb9
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsxa:BbdDmjr+OtEvwDpjM8A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2156-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012253-11.dat	CryptoLocker_rule2
behavioral1/memory/2156-13-0x0000000000600000-0x0000000000610000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2508-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2156-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2508-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2508-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2156-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2508-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2156-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000012253-11.dat	UPX
behavioral1/memory/2156-13-0x0000000000600000-0x0000000000610000-memory.dmp	UPX
behavioral1/memory/2508-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2156-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2508-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2508	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2156	2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2508	2156	2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe	28
PID 2156 wrote to memory of 2508	2156	2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe	28
PID 2156 wrote to memory of 2508	2156	2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe	28
PID 2156 wrote to memory of 2508	2156	2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
62KB

MD5
f9747e0457a8742465deaacbad2d53bf

SHA1
9fa787e30f781bdc72aff9e2fadb8a88f0e74527

SHA256
afed1417bc0a696e179aa68887829e851f307f78cdf995a613afb2cade4e583b

SHA512
3c9d6577052a38262c37721c864db7c2d60cca45d81e9207043a4ea82c74e9eb32ac68718e94eb9a91049c6d98d07f0da65097307bdd4aef94e5edee52420bfb

Download Submit
memory/2156-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2156-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2156-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2156-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2156-13-0x0000000000600000-0x0000000000610000-memory.dmp

Filesize
64KB

Download
memory/2156-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2508-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2508-19-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2508-21-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2508-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download