445071f5ad451e0abd406da968502b0c824a8a851b72aae9fbe091a41d560e54

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
24/01/2024, 02:32

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General

Target

2024-01-24_7a963fbc8bb5f1784bd6b48a78283b28_cryptolocker.exe
Size

44KB
MD5

7a963fbc8bb5f1784bd6b48a78283b28
SHA1

30460d654cf80b366f7b96705441f9db32e3fba6
SHA256

445071f5ad451e0abd406da968502b0c824a8a851b72aae9fbe091a41d560e54
SHA512

268d74c2e800b2d1e39c195da1bbaf167f00120139822f158dc5d04cf7cc7a858ded9cb5509b25628361fb5f2c85c69185663c0a9b3dc437fc0c2b291c576160
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05Wiq:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ1q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/836-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000014120-14.dat	CryptoLocker_rule2
behavioral1/memory/2400-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2400-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/836-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2400-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2400-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/836-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000014120-14.dat	UPX
behavioral1/memory/2400-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2400-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2400	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
836	2024-01-24_7a963fbc8bb5f1784bd6b48a78283b28_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 836 wrote to memory of 2400	836	2024-01-24_7a963fbc8bb5f1784bd6b48a78283b28_cryptolocker.exe	28
PID 836 wrote to memory of 2400	836	2024-01-24_7a963fbc8bb5f1784bd6b48a78283b28_cryptolocker.exe	28
PID 836 wrote to memory of 2400	836	2024-01-24_7a963fbc8bb5f1784bd6b48a78283b28_cryptolocker.exe	28
PID 836 wrote to memory of 2400	836	2024-01-24_7a963fbc8bb5f1784bd6b48a78283b28_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-24_7a963fbc8bb5f1784bd6b48a78283b28_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_7a963fbc8bb5f1784bd6b48a78283b28_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:836
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2400

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\asih.exe

Filesize
44KB

MD5
29ee8f9938e86925bc6da08652ad5cca

SHA1
ce490df10341fd708c63478f1cc7ca468e013a63

SHA256
338761acb31663783851c7d92fbe5f0378514525430f3029a3d2cbfb21b3044c

SHA512
db78b416bbc70c560e5630199b8a4e426b02e4d5c20feb0b0f00d868321cb83d3640d7bb8d8f10da94f44ebe6bb78e5fddf1945685ef382ab3aa14499c2214e2

Download Submit
memory/836-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/836-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/836-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/836-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2400-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2400-18-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2400-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download