c1eb02f5ae27591cf35bc4d1a3fa1c1c5a2850ca322c0fbb6a761e17b01ce76c

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
21/04/2024, 04:43

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General

Target

2024-04-21_f1dcbe6a90fe3fd9e8ed08f72d50f09e_cryptolocker.exe
Size

39KB
MD5

f1dcbe6a90fe3fd9e8ed08f72d50f09e
SHA1

caacaefe77e2e10527e3f2d632a52a60295e08da
SHA256

c1eb02f5ae27591cf35bc4d1a3fa1c1c5a2850ca322c0fbb6a761e17b01ce76c
SHA512

61be6082a9d24482efef1e346f439d70a14d619363d92e3473a225af70a48c4766fcec563f26d13a910f51bc0e6c70dc3a5b718e649b2a0092dbd36f41cb6f7b
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLNWR:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2368-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000014120-11.dat	CryptoLocker_rule2
behavioral1/memory/2368-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1716-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2368-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000014120-11.dat	CryptoLocker_set1
behavioral1/memory/2368-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1716-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1716	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2368	2024-04-21_f1dcbe6a90fe3fd9e8ed08f72d50f09e_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 2368 wrote to memory of 1716	2368	2024-04-21_f1dcbe6a90fe3fd9e8ed08f72d50f09e_cryptolocker.exe	28
PID 2368 wrote to memory of 1716	2368	2024-04-21_f1dcbe6a90fe3fd9e8ed08f72d50f09e_cryptolocker.exe	28
PID 2368 wrote to memory of 1716	2368	2024-04-21_f1dcbe6a90fe3fd9e8ed08f72d50f09e_cryptolocker.exe	28
PID 2368 wrote to memory of 1716	2368	2024-04-21_f1dcbe6a90fe3fd9e8ed08f72d50f09e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-21_f1dcbe6a90fe3fd9e8ed08f72d50f09e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_f1dcbe6a90fe3fd9e8ed08f72d50f09e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1716

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\asih.exe

Filesize
39KB

MD5
23c66acb42540af84ca4eff7a0d0753f

SHA1
9aab876895787c39f9eb0ceb67615e100f38c270

SHA256
e1c433e7809baa5d304ba00da3463910e5485d7c3d409e65fafe3629d7d1b9f1

SHA512
a2af1a3fa048d5f677a0ce4b1af9d30283525494d31b758d9537a327e53a2960f77f89f83510aa6c3901242d06fd0384e403c09018e6ba8acf6f50ef6b1b8d3b

Download Submit
memory/1716-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2368-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2368-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2368-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2368-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2368-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download