6421386a233cccb9bc3b7e40ba083798e729db181ab51b1cb68558664fbe58e6

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 04:25

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General

Target

2024-04-26_0cf25db13e28609b788b10be4df793f2_cryptolocker.exe
Size

47KB
MD5

0cf25db13e28609b788b10be4df793f2
SHA1

1408d8890ce1369f54b8dc8ea175ebf0d9b3c6fa
SHA256

6421386a233cccb9bc3b7e40ba083798e729db181ab51b1cb68558664fbe58e6
SHA512

a31d49ea1a893a021093d6c3366cd769cd86936ee96089ee943b1f4878c1f37cb6cc47a8f4e765408c83511513da38a57685f76df982f93e567416a7754d6c85
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvccwDFUzKt:79mqyNhQMOtEvwDpjBzck1Wxt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2292-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2292-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012247-25.dat	CryptoLocker_rule2
behavioral1/memory/2744-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2292-13-0x00000000006F0000-0x00000000006FF000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2292-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2292-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012247-25.dat	CryptoLocker_set1
behavioral1/memory/2744-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2292-13-0x00000000006F0000-0x00000000006FF000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2744	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2292	2024-04-26_0cf25db13e28609b788b10be4df793f2_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 2292 wrote to memory of 2744	2292	2024-04-26_0cf25db13e28609b788b10be4df793f2_cryptolocker.exe	28
PID 2292 wrote to memory of 2744	2292	2024-04-26_0cf25db13e28609b788b10be4df793f2_cryptolocker.exe	28
PID 2292 wrote to memory of 2744	2292	2024-04-26_0cf25db13e28609b788b10be4df793f2_cryptolocker.exe	28
PID 2292 wrote to memory of 2744	2292	2024-04-26_0cf25db13e28609b788b10be4df793f2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_0cf25db13e28609b788b10be4df793f2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_0cf25db13e28609b788b10be4df793f2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2744

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

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Downloads

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

Filesize
47KB

MD5
39fc3571ed75880ac5a1338833503ab1

SHA1
92f090a2e763a4aadff697fd7b38f28e5f5b770d

SHA256
79bfa443bcf3163240e99564d6703d03d742e6c90e6e4fe977f91ddc0beb395f

SHA512
fcceabbabe9c99c59149879a65740ece1de24bd7232fa88eb209709b013e57663e6279ba181466e071003f16f641c04195cbec7fc00690650f6f3350f3d92059

Download Submit
memory/2292-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2292-3-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2292-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2292-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2292-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2292-13-0x00000000006F0000-0x00000000006FF000-memory.dmp

Filesize
60KB

Download
memory/2744-26-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2744-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download