e1a111308d33063862d2656c6dea7e6a5cdbf7adb655f284ec0c5260460b243c

Analysis

max time kernel
0s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
08-06-2024 06:03

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General

Target

2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe
Size

44KB
MD5

4e9d23d4e670eed0eaccfcbcbbf2d2aa
SHA1

a374c261c7b3e6a5d7799b441d2810036c2e4f34
SHA256

e1a111308d33063862d2656c6dea7e6a5cdbf7adb655f284ec0c5260460b243c
SHA512

f53757d90bddaacebf4d00c3d7bd958d0f4cfd42ec061616334880541d08a81e85211afc73c4dd4b51d69a60c507e8fd960ebd24bcd15a84dbd7408fa59de635
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUkZ:bm74zYcgT/EkM0ryfjdZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2364-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c0000000141c0-24.dat	CryptoLocker_rule2
behavioral1/memory/3000-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2364-15-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3000-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3000	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2364	2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_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 2364 wrote to memory of 3000	2364	2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe	28
PID 2364 wrote to memory of 3000	2364	2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe	28
PID 2364 wrote to memory of 3000	2364	2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe	28
PID 2364 wrote to memory of 3000	2364	2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_4e9d23d4e670eed0eaccfcbcbbf2d2aa_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2364
- 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

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
44KB

MD5
c27bdde802411c8cf8c8d1b967818a30

SHA1
a5c536820914f5405a4948558be36ba80b16ebae

SHA256
6218eb8bff15fcddb7e3c99d32e9bd1c55cb75f7e2d9e9a27c7bb6b716acd933

SHA512
ecb4cb5e58801492498b52f12be4c7573e17669227c6bccf2d73cda4077f9121b59400da47f4deea77a740202fe86753432430b901bfefb85bb1a424406a3ca6

Download Submit
memory/2364-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2364-9-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/2364-15-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2364-2-0x0000000001CB0000-0x0000000001CB6000-memory.dmp

Filesize
24KB

Download
memory/2364-1-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/3000-25-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3000-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3000-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download