f292703521cff8b6f6895fb8fdb70db3a5fadf31e69efb8694f852b4e2cf5f5a

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
07/03/2024, 16:40

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General

Target

2024-03-07_a53b20ff92345e367e6c3aa4f525af84_cryptolocker.exe
Size

48KB
MD5

a53b20ff92345e367e6c3aa4f525af84
SHA1

46955b3eb3a119bc5d9b4ce2b971f2008429453f
SHA256

f292703521cff8b6f6895fb8fdb70db3a5fadf31e69efb8694f852b4e2cf5f5a
SHA512

9237154ef297be9ac604fc6c51537fa9ff4de5c6a780f4afc27b78e6a3169972a2ea108a0baf320b710268a184ed5fe308d36c6b295185845bca96aa951ad9f1
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTEL:79mqyNhQMOtEvwDpjBxe81L

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2832-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000122be-15.dat	CryptoLocker_rule2
behavioral1/memory/2832-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2420-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2832-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00090000000122be-15.dat	CryptoLocker_set1
behavioral1/memory/2832-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2420-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2420	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2832	2024-03-07_a53b20ff92345e367e6c3aa4f525af84_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 2832 wrote to memory of 2420	2832	2024-03-07_a53b20ff92345e367e6c3aa4f525af84_cryptolocker.exe	28
PID 2832 wrote to memory of 2420	2832	2024-03-07_a53b20ff92345e367e6c3aa4f525af84_cryptolocker.exe	28
PID 2832 wrote to memory of 2420	2832	2024-03-07_a53b20ff92345e367e6c3aa4f525af84_cryptolocker.exe	28
PID 2832 wrote to memory of 2420	2832	2024-03-07_a53b20ff92345e367e6c3aa4f525af84_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-07_a53b20ff92345e367e6c3aa4f525af84_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_a53b20ff92345e367e6c3aa4f525af84_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2832
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2420

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
49KB

MD5
596afb0b28c8a87deee7903963984d42

SHA1
58cc7a2f61999a1450fdcf97486faf143e8db7d2

SHA256
adb37bbeca75064de9b4322460da8706d9e8cd73a46ca8327c1713da36ed6e27

SHA512
8bd22c8026425cbe0f2315ed1eb9e58e1e0f4582ddeee4ed38cdc2249d0214fca5f2beb6d06ced472f56f4c2b14cd6f99359d61f8cfe44433fe85fe1ba2bc2cf

Download Submit
memory/2420-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2832-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2832-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2832-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2832-4-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2832-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download