eb38dbe99f77661b2de7609336efb435a4b61338d34150b702442312b8193950

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 13:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-01_99a0c647e996a329c0a69c6573ca306a_cryptolocker.exe
Size

43KB
MD5

99a0c647e996a329c0a69c6573ca306a
SHA1

9487e9901a0e0c611b597fcc27770c953fe10173
SHA256

eb38dbe99f77661b2de7609336efb435a4b61338d34150b702442312b8193950
SHA512

dd5f470d15a01a755f03539ed147f2bea1d760e6102ed07f2362aa5431638bf7a168ba9c51c0c3737928a2b10ad0dca482a2a125a0edcc5308cd5c8e8c95eba3
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUwt:bm74zYcgT/Ekn0ryfjZt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1752-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001447e-11.dat	CryptoLocker_rule2
behavioral1/memory/2680-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1752-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2680-27-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2680	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1752	2024-06-01_99a0c647e996a329c0a69c6573ca306a_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 1752 wrote to memory of 2680	1752	2024-06-01_99a0c647e996a329c0a69c6573ca306a_cryptolocker.exe	28
PID 1752 wrote to memory of 2680	1752	2024-06-01_99a0c647e996a329c0a69c6573ca306a_cryptolocker.exe	28
PID 1752 wrote to memory of 2680	1752	2024-06-01_99a0c647e996a329c0a69c6573ca306a_cryptolocker.exe	28
PID 1752 wrote to memory of 2680	1752	2024-06-01_99a0c647e996a329c0a69c6573ca306a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_99a0c647e996a329c0a69c6573ca306a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_99a0c647e996a329c0a69c6573ca306a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2680

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\hasfj.exe

Filesize
44KB

MD5
9b7a5383e2b756f23caf08f36cf7d993

SHA1
f2297ceb58d3ef8ea79127a64504b91bbd9ab3a0

SHA256
a137ca30dedd138644d89f31885b9262902b12c9160ff7f47fdf9673ea3188b9

SHA512
76f844280b591325833c7871df44c2057685504245f6b386d5ae200981761a54350a55d3071b780723f26e0b20b17240aebdbdfc8331cc9e2df03786e5a363dd

Download Submit
memory/1752-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1752-9-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1752-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1752-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1752-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1752-14-0x0000000001EE0000-0x0000000001EED000-memory.dmp

Filesize
52KB

Download
memory/2680-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2680-26-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2680-19-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2680-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download