19a894f70ce2c90572fa96467d140225100d7beccef1518b56d12f6f65261b4b

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17-02-2024 12:48

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General

Target

2024-02-17_9bbea1230e5d4c9b95844defeb87104a_cryptolocker.exe
Size

71KB
MD5

9bbea1230e5d4c9b95844defeb87104a
SHA1

f5ff6fab8d81567fe25cf7c893895ed4482f5873
SHA256

19a894f70ce2c90572fa96467d140225100d7beccef1518b56d12f6f65261b4b
SHA512

09a47a7432108b9ee0cab70eb832479d2fc767eeb6e1bf237516bf808e44a24bba81219df6c1b070e48cdd4dff6b83f83284d62bea8bb0b8451ed5e23eb03e06
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1bq:X6a+SOtEvwDpjBZYvQd2e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231f0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231f0-12.dat	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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-17_9bbea1230e5d4c9b95844defeb87104a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2164	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 4796 wrote to memory of 2164	4796	2024-02-17_9bbea1230e5d4c9b95844defeb87104a_cryptolocker.exe	84
PID 4796 wrote to memory of 2164	4796	2024-02-17_9bbea1230e5d4c9b95844defeb87104a_cryptolocker.exe	84
PID 4796 wrote to memory of 2164	4796	2024-02-17_9bbea1230e5d4c9b95844defeb87104a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-17_9bbea1230e5d4c9b95844defeb87104a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_9bbea1230e5d4c9b95844defeb87104a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4796
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2164

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
71KB

MD5
11abd740fe6375e22c29ccbf9553f58f

SHA1
02fafa1ba2109fb889588e570f3db3c0d14cfa4e

SHA256
cbda2307404e43f8cff44913ab9a0e7462c9c4e45b31e653b3538756a73ec262

SHA512
e38dbc1d9cc2fea2df6bf3595cdd380b2b58b23b81ca42b4ad008a92b903a0e0d8684e32d911b215e967ff61f561f9eff7472131b12ead4e5bacee2c2749fab5

Download Submit
memory/2164-23-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4796-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4796-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4796-2-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download