e72c2c060c46b082a59c63ddd937631fdc68f8e9f814ff5b7a9dfce7e277caef

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12-03-2024 19:30

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General

Target

2024-03-12_1b96d8de4e72810ad4114a6dffde68ef_cryptolocker.exe
Size

47KB
MD5

1b96d8de4e72810ad4114a6dffde68ef
SHA1

4561f018814fe02b410c873f872303aae8298e73
SHA256

e72c2c060c46b082a59c63ddd937631fdc68f8e9f814ff5b7a9dfce7e277caef
SHA512

928733dee7006ab1ac3917f9789b6a44558570641093aa0906b1f4bc3ae3ca6ec87c39bb301076f662fddad8c280e1755e4e76ec796f9f444c8bc940c30d204d
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaN44:xj+VGMOtEvwDpjy+TN44

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3688-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/3688-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/116-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/116-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3688-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_set1
behavioral2/memory/3688-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/116-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/116-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/3688-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000400000001e980-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3688-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/116-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/116-27-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-12_1b96d8de4e72810ad4114a6dffde68ef_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
116	misid.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3688 wrote to memory of 116	3688	2024-03-12_1b96d8de4e72810ad4114a6dffde68ef_cryptolocker.exe	89
PID 3688 wrote to memory of 116	3688	2024-03-12_1b96d8de4e72810ad4114a6dffde68ef_cryptolocker.exe	89
PID 3688 wrote to memory of 116	3688	2024-03-12_1b96d8de4e72810ad4114a6dffde68ef_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-12_1b96d8de4e72810ad4114a6dffde68ef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_1b96d8de4e72810ad4114a6dffde68ef_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3688
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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
47KB

MD5
54baaabb831efbd7c51024a741beb48e

SHA1
c6bce3d7b49f34b1a1bbdf495e4ce78f5a648d1d

SHA256
c489e2cb622ea8b709819b2beedbb6be82dde646c637152820d62c906aff4f81

SHA512
64833871efb52aa4dc2035010711fdd14c2ea1ddfe9eda71938e95bfd1dd9515a0131e379e27950094f80ea71bd12ce393dec0d903b35fbc0e62168503fbf74e

Download Submit
memory/116-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/116-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/116-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/116-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3688-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3688-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3688-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3688-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3688-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download