7895cdd946d3c8ea939f59826209fc7ef9c9744ef5fca18080426c45496f5d49

Analysis

max time kernel
149s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-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 5 IoCs

resource	yara_rule
behavioral2/memory/3180-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002311a-13.dat	CryptoLocker_rule2
behavioral2/memory/3716-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3180-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3716-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3716-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3180-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3716-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3180-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002311a-13.dat	UPX
behavioral2/memory/3716-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3180-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3716-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3716	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 3180 wrote to memory of 3716	3180	2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe	89
PID 3180 wrote to memory of 3716	3180	2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe	89
PID 3180 wrote to memory of 3716	3180	2024-02-24_763b4b23e0bd9cb639e22328965ab90f_cryptolocker.exe	89

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⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3180
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3716

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
50KB

MD5
8e743cabe024d1ea44dd0ed6095b1893

SHA1
7ceb3eb93dc663d2a7ecfe10efad4e1dca5e096e

SHA256
94818d27b1c2a6ca91da4e0785a538420e9251f213a5c37a173254406c2e9ac0

SHA512
1301d3fccba18a9a413078243c3009298bae9d1c2740d98deb87a268ea64703f657246f3ab95058148bb29221cf3007086b5bd6c969fa5a6d28d834529ca8237

Download Submit
memory/3180-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3180-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3180-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3180-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3180-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3716-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3716-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/3716-22-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/3716-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download