71a6af38b2abe51bc25645d8bb64bb7ffda6190b5f8f372a6d4f3020ab47e6d7

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
23/05/2024, 18:18

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General

Target

2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe
Size

32KB
MD5

aef05547629d8939ab63e36bb5448b95
SHA1

80a098926127c3e2f38e015e572dc18127bbe395
SHA256

71a6af38b2abe51bc25645d8bb64bb7ffda6190b5f8f372a6d4f3020ab47e6d7
SHA512

697da97facb35b70199e3755195d2be9f6c59681581219662d9d635b9c134b64f06e6c83bdb228e14fac7bc431548c00ed82efb9e19e6e8b37a15ca89043a660
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOKei:bG74zYcgT/Ekd0ryfjUei

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2068-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001228a-11.dat	CryptoLocker_rule2
behavioral1/memory/2068-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3000-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3000-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3000	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2068	2024-05-23_aef05547629d8939ab63e36bb5448b95_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 2068 wrote to memory of 3000	2068	2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe	28
PID 2068 wrote to memory of 3000	2068	2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe	28
PID 2068 wrote to memory of 3000	2068	2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe	28
PID 2068 wrote to memory of 3000	2068	2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3000

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\hasfj.exe

Filesize
32KB

MD5
911a473e44de1758418d9082d589d0f0

SHA1
51d03b01831c1dc24afbb5045a58b20098ad4eae

SHA256
73333b164a4c8efe0b7e2165637e21ac154b4fbf897134f0bd65c9bc51723aa3

SHA512
377daf599e8af6e38b5997f7890600e8a54d38776849060203b40299bae1302fbbfbfd0311ad27c7d9a330bd5f011b7555c82bae30a6a91415f513bf05cd2130

Download Submit
memory/2068-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2068-9-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2068-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2068-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2068-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3000-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3000-18-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/3000-25-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/3000-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download