a599b4aa7342c97a9ceb8026aa86336f3fa3b4567117076d71cca7890fd7f722

Analysis

max time kernel
153s
max time network
158s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-02-2024 20:51

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General

Target

2024-02-28_c76bfd8695c05443135fd5310898691f_cryptolocker.exe
Size

50KB
MD5

c76bfd8695c05443135fd5310898691f
SHA1

3c1430494098f5a52602169e81db563d601191e0
SHA256

a599b4aa7342c97a9ceb8026aa86336f3fa3b4567117076d71cca7890fd7f722
SHA512

b3f462864aed882a5a9cbee336b428d0a4ff917c453c79fb3892dd663aad34cc3659bf13b1461339c720119d4fc55eec0b96e1ea93c7acb291295ebb68c32a67
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnUCNs:79mqyNhQMOtEvwDpjBxe8xCNs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1948-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001221f-11.dat	CryptoLocker_rule2
behavioral1/memory/1948-13-0x0000000002800000-0x000000000280F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1948-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2020-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1948-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001221f-11.dat	CryptoLocker_set1
behavioral1/memory/1948-13-0x0000000002800000-0x000000000280F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1948-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2020-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2020	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1948	2024-02-28_c76bfd8695c05443135fd5310898691f_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 1948 wrote to memory of 2020	1948	2024-02-28_c76bfd8695c05443135fd5310898691f_cryptolocker.exe	28
PID 1948 wrote to memory of 2020	1948	2024-02-28_c76bfd8695c05443135fd5310898691f_cryptolocker.exe	28
PID 1948 wrote to memory of 2020	1948	2024-02-28_c76bfd8695c05443135fd5310898691f_cryptolocker.exe	28
PID 1948 wrote to memory of 2020	1948	2024-02-28_c76bfd8695c05443135fd5310898691f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-28_c76bfd8695c05443135fd5310898691f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_c76bfd8695c05443135fd5310898691f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2020

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
50KB

MD5
6c10684699de37df307ac8d4aedace8c

SHA1
9f657fc45472b3b6555d02f053d2065458d60508

SHA256
03c9caa0eaee145286ffcd59529f943abd578d308fc677cc2217511e9adad12e

SHA512
acec8611c185380094c011b0be0e1703f8e1c34662391338482498ad0c25b63fb08eddb9415950d93e6a97a61587971646fe37e70796f732bf626f24288eeec1

Download Submit
memory/1948-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1948-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1948-2-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1948-3-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1948-13-0x0000000002800000-0x000000000280F000-memory.dmp

Filesize
60KB

Download
memory/1948-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2020-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2020-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download