f513b3c0534e13857172298aa946b4d4c702a6687ae136123949aa7b5be3c3bd

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-03-2024 09:51

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General

Target

2024-03-28_a57b4335531fb7e975e74a9aac3b01b7_cryptolocker.exe
Size

55KB
MD5

a57b4335531fb7e975e74a9aac3b01b7
SHA1

8b8ddf0a8c24715a497fd5281fe5adac29fb77e1
SHA256

f513b3c0534e13857172298aa946b4d4c702a6687ae136123949aa7b5be3c3bd
SHA512

e306a4bebe8f09c2c2f707a577f0e8eb412b55625587fc0fb903392e5379d17261b02ec9c48631b8a6137a1c38b1ec0900dd8a4a8e051b97099833f89bbf3e8f
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CdMduYJ:79mqyNhQMOtEvwDpjBPY7xv3g8ZdtJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1460-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012254-11.dat	CryptoLocker_rule2
behavioral1/memory/1460-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2792-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1460-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012254-11.dat	CryptoLocker_set1
behavioral1/memory/1460-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2792-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2792	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1460	2024-03-28_a57b4335531fb7e975e74a9aac3b01b7_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 1460 wrote to memory of 2792	1460	2024-03-28_a57b4335531fb7e975e74a9aac3b01b7_cryptolocker.exe	28
PID 1460 wrote to memory of 2792	1460	2024-03-28_a57b4335531fb7e975e74a9aac3b01b7_cryptolocker.exe	28
PID 1460 wrote to memory of 2792	1460	2024-03-28_a57b4335531fb7e975e74a9aac3b01b7_cryptolocker.exe	28
PID 1460 wrote to memory of 2792	1460	2024-03-28_a57b4335531fb7e975e74a9aac3b01b7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_a57b4335531fb7e975e74a9aac3b01b7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_a57b4335531fb7e975e74a9aac3b01b7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2792

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
55KB

MD5
dc35c17596595bad7e4f5a757dfd3b7d

SHA1
456a88d16c88ad09b3ef75d412b0ead1c01b96ac

SHA256
2b4d666452883b0401b73851e56b4d9dd6d0ebd0aa79c19fae4dec5ac855af02

SHA512
26e9cc4ae40f5ce1d8643c54232ca34dfae6e5c3c2c63609363b3ab5a6190d0570cdc766e829a8242880adfde4b8635d5168a834cea119dff59c2fa00bca63dd

Download Submit
memory/1460-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1460-0-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/1460-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1460-5-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/1460-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2792-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2792-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2792-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download