72a34ac5aabd8009dbee2acd2fdb6be62bfb29fa16e65384e22887c46192ea85

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
28/03/2024, 03:24

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General

Target

2024-03-28_0246340b9ca915387c85df4645c336ea_cryptolocker.exe
Size

57KB
MD5

0246340b9ca915387c85df4645c336ea
SHA1

f6caeb7b4409bbac8811f3de63f3d9a066a8cfe0
SHA256

72a34ac5aabd8009dbee2acd2fdb6be62bfb29fa16e65384e22887c46192ea85
SHA512

bb4117d6d8c021fb13435b66f458fa601762b3a72c3781e773c6bc27d3e7c813bf6c2fab15ed0726b98f904de094aa0730a5be9dae9b9d4ad8f33fc2a5866d3f
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj9aYa9mpLI:z6a+CdOOtEvwDpjQP

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000013a3f-11.dat	CryptoLocker_rule2
behavioral1/memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2316-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2316-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000013a3f-11.dat	CryptoLocker_set1
behavioral1/memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2316-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2316-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000013a3f-11.dat	UPX
behavioral1/memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2316-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2316-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2316	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2312	2024-03-28_0246340b9ca915387c85df4645c336ea_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000013a3f-11.dat	upx
behavioral1/memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2316-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2316-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2312 wrote to memory of 2316	2312	2024-03-28_0246340b9ca915387c85df4645c336ea_cryptolocker.exe	28
PID 2312 wrote to memory of 2316	2312	2024-03-28_0246340b9ca915387c85df4645c336ea_cryptolocker.exe	28
PID 2312 wrote to memory of 2316	2312	2024-03-28_0246340b9ca915387c85df4645c336ea_cryptolocker.exe	28
PID 2312 wrote to memory of 2316	2312	2024-03-28_0246340b9ca915387c85df4645c336ea_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_0246340b9ca915387c85df4645c336ea_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_0246340b9ca915387c85df4645c336ea_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2316

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\asih.exe

Filesize
57KB

MD5
8c6cf5f4ac018b689f0108b5fbb21c74

SHA1
3a0eb306d4f4276742be8198ec27f0b3d2a23052

SHA256
624233c3f30ca1483fdf053baaa524e72cb6954b5d3d1ad986e7a7a140aa4f5e

SHA512
46da013d838d902a1c6770e7d7267a025051142589adba14ab3712c24a9b71caaaa0fa73cc88dc08e6f82d91394e85bd8fe07df195a9b00ff9fc43204b712842

Download Submit
memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2312-3-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2312-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2312-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2316-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2316-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2316-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2316-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download