7895cdd946d3c8ea939f59826209fc7ef9c9744ef5fca18080426c45496f5d49

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 04:52

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General

Target

2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe
Size

50KB
MD5

763b4b23e0bd9cb639e22328965ab90f
SHA1

34ac92cf5b3217d022a79ee9e60fcd9acd3d2c7b
SHA256

7895cdd946d3c8ea939f59826209fc7ef9c9744ef5fca18080426c45496f5d49
SHA512

06b448108cd897b1ea2d32dfc6ec468c4c9c76b49e24d16e2a3b74b52030c0b974fc1ac34dd7531d4f5bd44894443c30b73e122231a8a72d7df4782c7fd929c3
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6Impy8:BbdDmjr+OtEvwDpjM/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/1504-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012256-11.dat	CryptoLocker_rule2
behavioral1/memory/1504-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1504-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2176-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2176-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1504-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2176-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2176-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/1504-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000012256-11.dat	UPX
behavioral1/memory/1504-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1504-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	UPX
behavioral1/memory/2176-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2176-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2176	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1504	2024-02-24_763b4b23e0bd9cb639e22328965ab90f_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 1504 wrote to memory of 2176	1504	2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe	28
PID 1504 wrote to memory of 2176	1504	2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe	28
PID 1504 wrote to memory of 2176	1504	2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe	28
PID 1504 wrote to memory of 2176	1504	2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2176

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
50KB

MD5
8e743cabe024d1ea44dd0ed6095b1893

SHA1
7ceb3eb93dc663d2a7ecfe10efad4e1dca5e096e

SHA256
94818d27b1c2a6ca91da4e0785a538420e9251f213a5c37a173254406c2e9ac0

SHA512
1301d3fccba18a9a413078243c3009298bae9d1c2740d98deb87a268ea64703f657246f3ab95058148bb29221cf3007086b5bd6c969fa5a6d28d834529ca8237

Download Submit
memory/1504-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1504-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/1504-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1504-8-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/1504-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1504-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

Filesize
64KB

Download
memory/2176-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2176-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download