fbcb4d81df10db2d1579b7972caf1b5a7e8c02861dbb944c443982a64396c5ac

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 13:33

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-02-24_540d6305fbb983cc8c4a7cc6d673e8e5_cryptolocker.exe
Size

67KB
MD5

540d6305fbb983cc8c4a7cc6d673e8e5
SHA1

c71d3aac325f45c1d5e4ef5caeaa3c8f894d1b5a
SHA256

fbcb4d81df10db2d1579b7972caf1b5a7e8c02861dbb944c443982a64396c5ac
SHA512

70001a70cffc976f8b083d67afe34a71101f3e6a84d4fda7cd67859ff3a74229c4b51c28dfa93d71e212a0acb9410dd9a1aa8cee3b5c5b401ab997836e5f2e41
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU4S:DW60sllyWOtEvwDpjwF859

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1692-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012254-11.dat	CryptoLocker_rule2
behavioral1/memory/2772-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1692-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1692-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012254-11.dat	CryptoLocker_set1
behavioral1/memory/2772-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1692-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2772	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1692	2024-02-24_540d6305fbb983cc8c4a7cc6d673e8e5_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 1692 wrote to memory of 2772	1692	2024-02-24_540d6305fbb983cc8c4a7cc6d673e8e5_cryptolocker.exe	28
PID 1692 wrote to memory of 2772	1692	2024-02-24_540d6305fbb983cc8c4a7cc6d673e8e5_cryptolocker.exe	28
PID 1692 wrote to memory of 2772	1692	2024-02-24_540d6305fbb983cc8c4a7cc6d673e8e5_cryptolocker.exe	28
PID 1692 wrote to memory of 2772	1692	2024-02-24_540d6305fbb983cc8c4a7cc6d673e8e5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-24_540d6305fbb983cc8c4a7cc6d673e8e5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_540d6305fbb983cc8c4a7cc6d673e8e5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2772

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
68KB

MD5
ec954f130656c15fc601a0d6067c6732

SHA1
c3fb7b19b4aa4e39b53b58f567e6a7b41ac8e14d

SHA256
c11485f62a4ddf2212e96556adc08e0ed99f8209e2fb35992862a6211a5fa63b

SHA512
e1a65a3a8b768b1a9ec63b7d0459518e49110bfa2cad659e6f58a2af2b1b5a3eb63088fe9de7e6743cfc22fd813805be2b126c96f75c1b9bff18114bcb857309

Download Submit
memory/1692-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1692-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1692-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1692-8-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1692-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2772-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2772-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2772-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download