b10230e6cb3356e3065a5e644c72b43d92d1639606f1b5e4441262444c5a76cd

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 21:27

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General

Target

2024-03-13_178c1406efe295dfef64ba92e0205174_cryptolocker.exe
Size

41KB
MD5

178c1406efe295dfef64ba92e0205174
SHA1

ebd64a8ebc394e296ea82c69c76b9e0c973f86e8
SHA256

b10230e6cb3356e3065a5e644c72b43d92d1639606f1b5e4441262444c5a76cd
SHA512

5232155e268a5955d2b187e084bebbc6f5fafbda292a5ae841377f9651f74d0e3ea4b24acfe57298b568cf29cab6d2223b456984fc41ee6e95ca28cae12fe3a2
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRY+iys:m5nkFNMOtEvwDpjG8hhXy+iys

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/412-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a00000002320e-13.dat	CryptoLocker_rule2
behavioral2/memory/412-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4648-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4648-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/412-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4648-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4648-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/412-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000a00000002320e-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/412-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4648-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4648-27-0x0000000000500000-0x000000000050E000-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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-13_178c1406efe295dfef64ba92e0205174_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4648	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 412 wrote to memory of 4648	412	2024-03-13_178c1406efe295dfef64ba92e0205174_cryptolocker.exe	91
PID 412 wrote to memory of 4648	412	2024-03-13_178c1406efe295dfef64ba92e0205174_cryptolocker.exe	91
PID 412 wrote to memory of 4648	412	2024-03-13_178c1406efe295dfef64ba92e0205174_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-13_178c1406efe295dfef64ba92e0205174_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_178c1406efe295dfef64ba92e0205174_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:412
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4648

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
41KB

MD5
f05d64c3eda62e0e07735f2998e86f9b

SHA1
78c392b10829c4016305a31a7a117398b1100351

SHA256
b0398bf20fae042a97b8fae6f83d913d66f7e1722eb90116dd38377a91bf4a84

SHA512
77fc3a16da31fd95e8d41b6044dbf6028d18729ca7c0244bd7ee5cdb58914cbba5df784bad536bfe25fad5ae1ace12db4f230c1d5eb997c3b1e04d18d5294bfa

Download Submit
memory/412-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/412-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/412-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/412-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/412-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4648-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4648-20-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4648-21-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/4648-27-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download