332382ddfa560302e5f7679f3184207275c72da6b2687ece4895839dd2e453a1

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18/02/2024, 12:42

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General

Target

2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe
Size

51KB
MD5

bb90ed0ec4c5175f7f9964dc821c9ea9
SHA1

12ad863191b2865319e738801e4b7b94a0e32276
SHA256

332382ddfa560302e5f7679f3184207275c72da6b2687ece4895839dd2e453a1
SHA512

014bfc39ee832e09aed590439876d4b8455758d2db95458e0da7c40ad658f0c1ac26930409f7e07ed11aea3ca46da24c8e817e881bbd5c99c41de01d1e3f043e
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszjg:79mqyNhQMOtEvwDpjBxe8TpXRSM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/3016-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012242-11.dat	CryptoLocker_rule2
behavioral1/memory/3016-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2784-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/3016-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012242-11.dat	CryptoLocker_set1
behavioral1/memory/3016-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2784-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2784	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3016	2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_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 3016 wrote to memory of 2784	3016	2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe	28
PID 3016 wrote to memory of 2784	3016	2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe	28
PID 3016 wrote to memory of 2784	3016	2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe	28
PID 3016 wrote to memory of 2784	3016	2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2784

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

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
52KB

MD5
38cb67899898d1a640eb26d68ba18524

SHA1
315eecd45027c85fb08bddb9c094b8be762daf89

SHA256
67bc8efd515a300c60d21148f90b3faf883a6e8786142303c765f1298637f3f3

SHA512
d9e49a8b22597dfc6da0aecacce47bf61148612035c948aab7d3d17d0a9af66137211dd173daf34e70dd00f71a338afc4935c5fa4b12b7d4727083a951f221a8

Download Submit
memory/2784-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2784-19-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2784-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3016-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3016-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3016-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3016-3-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/3016-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download