e4bd2534440818e67fdfb43d5a0677d85c0f3138ee1ef141fad1f5d27c31db0c

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/05/2024, 10:37

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-05-14_8c34f353625d3455deef83b6ce507603_cryptolocker.exe
Size

52KB
MD5

8c34f353625d3455deef83b6ce507603
SHA1

f4d070a04de337cabf45c371071a6e454de51d98
SHA256

e4bd2534440818e67fdfb43d5a0677d85c0f3138ee1ef141fad1f5d27c31db0c
SHA512

ebb51ff0213962e8052fe49fc554b5b2ceb2e19b3ae37251f51b46a7ea5326531c6697d734b61d77641cccac8f9cb4300f49534770486cffad863ca95448f8aa
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGfepe4:79mqyNhQMOtEvwDpjBxe8GGfZ4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1724-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c0000000136fc-11.dat	CryptoLocker_rule2
behavioral1/memory/1724-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3040-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1724-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c0000000136fc-11.dat	CryptoLocker_set1
behavioral1/memory/1724-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3040-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3040	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1724	2024-05-14_8c34f353625d3455deef83b6ce507603_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 1724 wrote to memory of 3040	1724	2024-05-14_8c34f353625d3455deef83b6ce507603_cryptolocker.exe	28
PID 1724 wrote to memory of 3040	1724	2024-05-14_8c34f353625d3455deef83b6ce507603_cryptolocker.exe	28
PID 1724 wrote to memory of 3040	1724	2024-05-14_8c34f353625d3455deef83b6ce507603_cryptolocker.exe	28
PID 1724 wrote to memory of 3040	1724	2024-05-14_8c34f353625d3455deef83b6ce507603_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-14_8c34f353625d3455deef83b6ce507603_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_8c34f353625d3455deef83b6ce507603_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3040

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

Loading Replay Monitor...

Downloads

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

Filesize
52KB

MD5
564f3822b1b2e65606980bece7c2b362

SHA1
8b3085c17bc43fbc671129c40972065480fb371d

SHA256
5dcf3a1f440a9b904635a0121ff828dc6a7fdac7f1564c2d8127aa8193853244

SHA512
ca0f8d1092a6876cb03ca1af4025a55ad81ecdb6e5038cbe031f2b5f5b1c370791da74269bf84dc439a0e2091a150db94c2d9d8ab52566e199a57c0c999183e4

Download Submit
memory/1724-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1724-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1724-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1724-3-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1724-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3040-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3040-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3040-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download