ea11d01cb6a558070006d08921c1f1e00722621bcfa6264e3026be72c0ba7588

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
27-01-2024 19:32

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General

Target

2024-01-27_7138240f2c71e126bbe0e21188ee1e74_cryptolocker.exe
Size

94KB
MD5

7138240f2c71e126bbe0e21188ee1e74
SHA1

bd610b49ccd5be4e0a4342175f299d80383f6870
SHA256

ea11d01cb6a558070006d08921c1f1e00722621bcfa6264e3026be72c0ba7588
SHA512

79c12aaa770078013876ab5cae42fb3c385bc464b33124091b2d172c2251a50b30199040800204c1eb76b2809e5bff0b6fc4e401db7984643436595f9a09c091
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJkJr:xj+VGMOtEvwDpjubwQEIiVmkA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2220-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015cfa-23.dat	CryptoLocker_rule2
behavioral1/memory/2220-12-0x00000000005D0000-0x00000000005E0000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2220-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000015cfa-23.dat	CryptoLocker_set1
behavioral1/memory/2220-12-0x00000000005D0000-0x00000000005E0000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral1/memory/2220-8-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3032-24-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000b000000015cfa-23.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2220-12-0x00000000005D0000-0x00000000005E0000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
3032	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-01-27_7138240f2c71e126bbe0e21188ee1e74_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 2220 wrote to memory of 3032	2220	2024-01-27_7138240f2c71e126bbe0e21188ee1e74_cryptolocker.exe	16
PID 2220 wrote to memory of 3032	2220	2024-01-27_7138240f2c71e126bbe0e21188ee1e74_cryptolocker.exe	16
PID 2220 wrote to memory of 3032	2220	2024-01-27_7138240f2c71e126bbe0e21188ee1e74_cryptolocker.exe	16
PID 2220 wrote to memory of 3032	2220	2024-01-27_7138240f2c71e126bbe0e21188ee1e74_cryptolocker.exe	16

C:\Users\Admin\AppData\Local\Temp\2024-01-27_7138240f2c71e126bbe0e21188ee1e74_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_7138240f2c71e126bbe0e21188ee1e74_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3032

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

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

Filesize
94KB

MD5
8f72d98205a77b1b444fb6c8569d3406

SHA1
f356139409e1a949fcbe4b25516a94aa852074e4

SHA256
8f9c8a7c6a91b8ab23e0dec68f86b2caf40713750d8d379cd49489fbdb46719c

SHA512
b15df3e4be3bc8cd9a49f5b02348a47c7252cb0b0b28d2d103c49d6ed141256052262f76ef2cd0cf742f5c84b9de9083ce143fe596e86b94d66050a8b469471d

Download Submit
memory/2220-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2220-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2220-12-0x00000000005D0000-0x00000000005E0000-memory.dmp

Filesize
64KB

Download
memory/2220-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3032-24-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3032-17-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download