3b125f19e4751571a1d991b3fafebcc2200940b9a66662c4077a469a093d4aaa

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
16/05/2024, 20:06

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General

Target

2024-05-16_ca2a271dd2419233ac035b5c1ada64ed_cryptolocker.exe
Size

71KB
MD5

ca2a271dd2419233ac035b5c1ada64ed
SHA1

fd1bd0d6b8810303fc56d2d76c1c95a93784b8b4
SHA256

3b125f19e4751571a1d991b3fafebcc2200940b9a66662c4077a469a093d4aaa
SHA512

4f5adea642e141154b72d9934f0a0fa9f2c4a1a709d6310297fc3f9cef4cee7b185e279eb9efc61736a57023d6148ae46547ed5847e3b81c3c174bb95a82d113
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOb:DW60sllyWOtEvwDpjwF85c

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2784-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000014890-11.dat	CryptoLocker_rule2
behavioral1/memory/2616-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2784-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2784-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000014890-11.dat	CryptoLocker_set1
behavioral1/memory/2616-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2784-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2616	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	2024-05-16_ca2a271dd2419233ac035b5c1ada64ed_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 2784 wrote to memory of 2616	2784	2024-05-16_ca2a271dd2419233ac035b5c1ada64ed_cryptolocker.exe	28
PID 2784 wrote to memory of 2616	2784	2024-05-16_ca2a271dd2419233ac035b5c1ada64ed_cryptolocker.exe	28
PID 2784 wrote to memory of 2616	2784	2024-05-16_ca2a271dd2419233ac035b5c1ada64ed_cryptolocker.exe	28
PID 2784 wrote to memory of 2616	2784	2024-05-16_ca2a271dd2419233ac035b5c1ada64ed_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-16_ca2a271dd2419233ac035b5c1ada64ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_ca2a271dd2419233ac035b5c1ada64ed_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2616

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
71KB

MD5
3c5784f63ebecdf1c93495d9a1026187

SHA1
868e0cc2ecc1240abef26232432e543598e9bacf

SHA256
f20d831aef1d3f90bd4a3b13639ecabd6690273f2ec3953268e3e432f8fe943d

SHA512
0591e01e04d60dcb950ff2076f4f6cdb4089d92a87ed31bc064c88d001f876df8417659c9fa73aac6ede054e9415ebbdc8208238cd61fe73908bf2e89e1edd45

Download Submit
memory/2616-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2616-18-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2616-25-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2784-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2784-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2784-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2784-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2784-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download