da57d7c404ed8da4a63858585398d8d273e5ea84544c96c9a62e0a43e6225b04

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01-05-2024 16:47

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General

Target

2024-05-01_539f98766e72c79cf514f2e66cd31e14_cryptolocker.exe
Size

67KB
MD5

539f98766e72c79cf514f2e66cd31e14
SHA1

1b0dc52cd0b906904cb8ec8b239c2b165171f0d6
SHA256

da57d7c404ed8da4a63858585398d8d273e5ea84544c96c9a62e0a43e6225b04
SHA512

041f299840d0e37fc87fe7cc092b3ffdbc7d74c1bf41d53416d4c1ec88d0d6149e3ae6f71e37395ca05b94ff9b5e0708ed019f48677dc975091ffdbb686cfcdc
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/oV:i5nkFGMOtEvwDpjNbwQEI8UZDQV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1640-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000016c90-11.dat	CryptoLocker_rule2
behavioral1/memory/1640-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2240-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/1640-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2240-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral1/memory/1640-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x0009000000016c90-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1640-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2240-25-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2240	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1640	2024-05-01_539f98766e72c79cf514f2e66cd31e14_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 1640 wrote to memory of 2240	1640	2024-05-01_539f98766e72c79cf514f2e66cd31e14_cryptolocker.exe	28
PID 1640 wrote to memory of 2240	1640	2024-05-01_539f98766e72c79cf514f2e66cd31e14_cryptolocker.exe	28
PID 1640 wrote to memory of 2240	1640	2024-05-01_539f98766e72c79cf514f2e66cd31e14_cryptolocker.exe	28
PID 1640 wrote to memory of 2240	1640	2024-05-01_539f98766e72c79cf514f2e66cd31e14_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-01_539f98766e72c79cf514f2e66cd31e14_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_539f98766e72c79cf514f2e66cd31e14_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2240

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\misid.exe

Filesize
67KB

MD5
6a21928eb4c85ddcb809f72b94a615e8

SHA1
894ae7efcb8ca22ae5d90f8f07b9e75b9b4ab5fa

SHA256
3256db1d60e8c8b529b4f022af46c3427186382c74f8be174c60bad19ae122fd

SHA512
d4fb16cbd3ae0b3d4ad974828ad12dcb8925f1ae9904cd4dcf6690b261f9fc68ebb4b6645369e717c7693f17345f9dc050652eaf2d273a0ccf496689d9ca6113

Download Submit
memory/1640-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1640-3-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/1640-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1640-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1640-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2240-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2240-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download