c2455b14315bbf5fd0f42ca99d4fd739c25268ef30471c12b9ea67a4385f7146

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 18:47

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General

Target

2024-05-21_c9daa7b60a793b9aefaf1b25eaf6e8c6_cryptolocker.exe
Size

49KB
MD5

c9daa7b60a793b9aefaf1b25eaf6e8c6
SHA1

924bc7d5ccd16f584d113188f0d0e91cd03aff6c
SHA256

c2455b14315bbf5fd0f42ca99d4fd739c25268ef30471c12b9ea67a4385f7146
SHA512

45ce6ccd91639e6b14a15f149e1ba73400f19e3cb222651b6d64fce08fccf94e8bc9b744fae70c2ebdf93b21b08ac7bdd874cd77a5cff07aa899af906ec4e832
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vdXfV:X6QFElP6n+gJBMOtEvwDpjBtEdXfV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023288-15.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023288-15.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-21_c9daa7b60a793b9aefaf1b25eaf6e8c6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1568	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 1300 wrote to memory of 1568	1300	2024-05-21_c9daa7b60a793b9aefaf1b25eaf6e8c6_cryptolocker.exe	82
PID 1300 wrote to memory of 1568	1300	2024-05-21_c9daa7b60a793b9aefaf1b25eaf6e8c6_cryptolocker.exe	82
PID 1300 wrote to memory of 1568	1300	2024-05-21_c9daa7b60a793b9aefaf1b25eaf6e8c6_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-21_c9daa7b60a793b9aefaf1b25eaf6e8c6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_c9daa7b60a793b9aefaf1b25eaf6e8c6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1568

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

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Downloads

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

Filesize
49KB

MD5
c96ad1b8ca8baedafd3347f1641ecd11

SHA1
1efa9ecdd8ed1aa531258fa1e96a6866d2d4a35e

SHA256
40742e0849718143af9fe59b3629152180456e4ed63fa4537bfb382966f38c48

SHA512
da2720e72cbfd4d18ac5a881ca278e23e187d07eb424b50460fc8a897fa864c99de2e3e26186584e8ed87470deb1af7aa23017345a8b533419f7b3082b7b0879

Download Submit
memory/1300-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1300-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1300-8-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1568-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1568-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download