c49af2574142350afb3cae6c1fe61dc83d81ca46867ddad7eb250c89431470ca

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/03/2024, 04:43

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General

Target

2024-03-13_70eb4b9d69814cf6297d73480ce9cd4c_cryptolocker.exe
Size

31KB
MD5

70eb4b9d69814cf6297d73480ce9cd4c
SHA1

a915a3c78d219b5242577cef94fc3cfcae8a2565
SHA256

c49af2574142350afb3cae6c1fe61dc83d81ca46867ddad7eb250c89431470ca
SHA512

e9dd587aef6a7f686d5c459217d66acb8c0c9dfa79096fbb6c3f7f423cb9e4dc749d815777bdb96eb33db6c3eabd0b09302069848f7ff8f39174561606e0e05d
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIO/xu3QD:q0zizzOSxMOtEvwDpj/arQ3QD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1804-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012251-11.dat	CryptoLocker_rule2
behavioral1/memory/1804-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/1804-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1804-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000012251-11.dat	UPX
behavioral1/memory/1804-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2556	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1804	2024-03-13_70eb4b9d69814cf6297d73480ce9cd4c_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 1804 wrote to memory of 2556	1804	2024-03-13_70eb4b9d69814cf6297d73480ce9cd4c_cryptolocker.exe	28
PID 1804 wrote to memory of 2556	1804	2024-03-13_70eb4b9d69814cf6297d73480ce9cd4c_cryptolocker.exe	28
PID 1804 wrote to memory of 2556	1804	2024-03-13_70eb4b9d69814cf6297d73480ce9cd4c_cryptolocker.exe	28
PID 1804 wrote to memory of 2556	1804	2024-03-13_70eb4b9d69814cf6297d73480ce9cd4c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-13_70eb4b9d69814cf6297d73480ce9cd4c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_70eb4b9d69814cf6297d73480ce9cd4c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2556

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
32KB

MD5
d3ceb605a7ef6e49ff1bb76226be5aba

SHA1
8a0815a72b1a4e967c89929d9c0d0544a25e67e0

SHA256
ef5a53efc6d747d59c5a85b9a4192213bbcfef41f780677392cfc67c89537288

SHA512
92db1caf6896918f3265d6c296a4cbb6908181ab05e1fb6bf588b4ed147717f156cab821f38e5e4d700032684a2b54bed10bad9aa9445992c66c9c3767d56ea2

Download Submit
memory/1804-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1804-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1804-3-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1804-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1804-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2556-18-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2556-17-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download