043e52c7d4917523e6634bd1ef6943902fd498c33d0bff518006abd95ae73c53

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
10-04-2024 13:26

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General

Target

2024-04-10_225ca156e2848d2b2f1354ab6c5c8f55_cryptolocker.exe
Size

46KB
MD5

225ca156e2848d2b2f1354ab6c5c8f55
SHA1

765a5fa768930bdc45748c2f21b3f553ad58cf84
SHA256

043e52c7d4917523e6634bd1ef6943902fd498c33d0bff518006abd95ae73c53
SHA512

eee1054e7507122c52ee49ccf6acd7aa61de6e0466b421ba112dee9e2afa50d0d58e2f47b75a40e7e97c7b20d7aa10afaac7eaf9dedb097d04e6ffca224a12ba
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkcB:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2916-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012253-11.dat	CryptoLocker_rule2
behavioral1/memory/2916-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2480-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2480-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2916-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000012253-11.dat	CryptoLocker_set1
behavioral1/memory/2916-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2480-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2480-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2480	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2916	2024-04-10_225ca156e2848d2b2f1354ab6c5c8f55_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 2916 wrote to memory of 2480	2916	2024-04-10_225ca156e2848d2b2f1354ab6c5c8f55_cryptolocker.exe	28
PID 2916 wrote to memory of 2480	2916	2024-04-10_225ca156e2848d2b2f1354ab6c5c8f55_cryptolocker.exe	28
PID 2916 wrote to memory of 2480	2916	2024-04-10_225ca156e2848d2b2f1354ab6c5c8f55_cryptolocker.exe	28
PID 2916 wrote to memory of 2480	2916	2024-04-10_225ca156e2848d2b2f1354ab6c5c8f55_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-10_225ca156e2848d2b2f1354ab6c5c8f55_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_225ca156e2848d2b2f1354ab6c5c8f55_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2480

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
46KB

MD5
4d396e1e90797818b23fca5449be40ca

SHA1
2699bc79fbf154bf7461afe943ae3960acc9c8de

SHA256
f3ffd09565144980ad41f2b5869ae4564c4493494cd567ae3974c7766e81a106

SHA512
04e0cdc32bd41d93f5a07fa196bee7e09958d0d178690a805f13d8eb9c17b10da93731108e950baaddf48d7f35978c77ae16952ebffb524547d8d74185e4b425

Download Submit
memory/2480-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2480-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2480-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2480-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2916-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2916-1-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2916-2-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2916-9-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2916-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download