3c286fa3f6f830bd4e8a1f85871860ebe0ee892f22c052a361141edaac7cd0f1

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2024 00:37

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General

Target

2024-01-25_96f268252f72ab2d595b671c64d1c772_cryptolocker.exe
Size

36KB
MD5

96f268252f72ab2d595b671c64d1c772
SHA1

3b676cce969eb4ce4c2b55d05ff4b0f1fd5cca93
SHA256

3c286fa3f6f830bd4e8a1f85871860ebe0ee892f22c052a361141edaac7cd0f1
SHA512

082ebe48607725bf6477db60d752640d14b107dcca043372d338ed377cc41e0a59812af99665e764f571e1b79889318d9384b8c537a2a0705773571747077e91
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLk:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2712-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_rule2
behavioral2/memory/2712-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2712-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_set1
behavioral2/memory/2712-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-25_96f268252f72ab2d595b671c64d1c772_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1004	asih.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 2712 wrote to memory of 1004	2712	2024-01-25_96f268252f72ab2d595b671c64d1c772_cryptolocker.exe	89
PID 2712 wrote to memory of 1004	2712	2024-01-25_96f268252f72ab2d595b671c64d1c772_cryptolocker.exe	89
PID 2712 wrote to memory of 1004	2712	2024-01-25_96f268252f72ab2d595b671c64d1c772_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-25_96f268252f72ab2d595b671c64d1c772_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_96f268252f72ab2d595b671c64d1c772_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1004

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\asih.exe

Filesize
36KB

MD5
dae75a2f953287db38edbc727d1d4be2

SHA1
c403188a629001902d3909e378c6b389ac98aa62

SHA256
5b44a0aeeb7b01ba6824abf64332e08d0691f764775951a3520ab21630a4f95b

SHA512
ebb0f5b64baa6accbc0ad7020fced89bdb304d7b560a84c1544d27214d7e647211e98f76d05a9d9c45c2ee2f2b950d9c9da3c119c5217fcf21095a38b1444224

Download Submit
memory/1004-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1004-19-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2712-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2712-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/2712-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/2712-3-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/2712-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download