62fd665d85881a8fdaac540aeea7097d77e9addb9e185e7024bae44022f86232

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22/05/2024, 18:09

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General

Target

2024-05-22_de50744b124b83174bf9557514466e35_cryptolocker.exe
Size

42KB
MD5

de50744b124b83174bf9557514466e35
SHA1

b6924ea25c711d80b480310239cf28ccd69a848f
SHA256

62fd665d85881a8fdaac540aeea7097d77e9addb9e185e7024bae44022f86232
SHA512

c46c31a2eaa088fc823426b4c60f088a472f1175647c21d72e94eac8948470a6d2663f296a338ba2dd788c4d2f732605421f3b6b4033008df441d83203d8ce35
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhJ:i5nkFGMOtEvwDpjR+viHshNP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1612-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001226d-11.dat	CryptoLocker_rule2
behavioral1/memory/2564-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2564-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1612-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2564-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2564-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral1/memory/1612-8-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000c00000001226d-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2564-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2564-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2564	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1612	2024-05-22_de50744b124b83174bf9557514466e35_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 1612 wrote to memory of 2564	1612	2024-05-22_de50744b124b83174bf9557514466e35_cryptolocker.exe	28
PID 1612 wrote to memory of 2564	1612	2024-05-22_de50744b124b83174bf9557514466e35_cryptolocker.exe	28
PID 1612 wrote to memory of 2564	1612	2024-05-22_de50744b124b83174bf9557514466e35_cryptolocker.exe	28
PID 1612 wrote to memory of 2564	1612	2024-05-22_de50744b124b83174bf9557514466e35_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-22_de50744b124b83174bf9557514466e35_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_de50744b124b83174bf9557514466e35_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2564

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

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
42KB

MD5
af08a3cb93bb49aa2f18b0d63bdb4b8b

SHA1
1554f5c826d85ed97697ac7fac61e968210084e6

SHA256
25b6e58c94ff553971682d39ed9899aad5f39b77e78cc9ab050a51fb934d2286

SHA512
4cc23f19b321357cec027b8c51e26cb51e8406846a57aef36adf4ac31098929a92339dd33e2622bb18fe71f732ab56da499b80b2fe18c5a7beae625ab8beeee7

Download Submit
memory/1612-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1612-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1612-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1612-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1612-13-0x00000000021B0000-0x00000000021BF000-memory.dmp

Filesize
60KB

Download
memory/2564-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2564-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2564-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2564-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download