52e044ee76ca80466d858b7fabbcaaaf43cfdbe070fc094d409940fc3ea02569

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
23/01/2024, 23:44

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General

Target

2024-01-23_68c1d2a53694a0a46329aee5dff51a98_cryptolocker.exe
Size

49KB
MD5

68c1d2a53694a0a46329aee5dff51a98
SHA1

0102c3f1d2e04f37e7c3a4d9571f07e4bb1b5403
SHA256

52e044ee76ca80466d858b7fabbcaaaf43cfdbe070fc094d409940fc3ea02569
SHA512

79574f4bc36dc5da10ff91c49359f843d246d7c3cbc2f42a278b8b55a8be956d20e4752fae20893751d7f095c7da9d7ef8df3939b13d5a64b81fba6a5884f2d2
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6ImpyG:BbdDmjr+OtEvwDpjMJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1268-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1268-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00070000000122c9-11.dat	CryptoLocker_rule2
behavioral1/memory/1800-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1800-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1268-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1268-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1800-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1800-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1268-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1268-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x00070000000122c9-11.dat	UPX
behavioral1/memory/1800-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1800-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1800	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1268	2024-01-23_68c1d2a53694a0a46329aee5dff51a98_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 1268 wrote to memory of 1800	1268	2024-01-23_68c1d2a53694a0a46329aee5dff51a98_cryptolocker.exe	28
PID 1268 wrote to memory of 1800	1268	2024-01-23_68c1d2a53694a0a46329aee5dff51a98_cryptolocker.exe	28
PID 1268 wrote to memory of 1800	1268	2024-01-23_68c1d2a53694a0a46329aee5dff51a98_cryptolocker.exe	28
PID 1268 wrote to memory of 1800	1268	2024-01-23_68c1d2a53694a0a46329aee5dff51a98_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-23_68c1d2a53694a0a46329aee5dff51a98_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_68c1d2a53694a0a46329aee5dff51a98_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1800

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
49KB

MD5
3e63bc0afec50a860e6410b5cb9631b8

SHA1
95bba14ee930c7aa129d2a79346232a97cd2caaf

SHA256
f74ba09686dca50eb94992717adbd55e4e650c40ed70ba987741ca1e89e72dfe

SHA512
ce9b1334c3ce2d278b113dde84a7744b64fcf29d26c7c662cbf0c55020a0afdbfb233cbefb58ed6de39f418afd9be1b68023977eb6132510167054812f524485

Download Submit
memory/1268-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1268-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1268-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1268-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1268-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1800-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1800-18-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/1800-20-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1800-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download