e54edd9b980f9e3a367276aa60727bd43532a9eabe393748f617a1337f60d4a7

Analysis

max time kernel
150s
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
23-02-2024 11:11

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General

Target

2024-02-23_f58d7b2f054ef18f88ab0329c337aa36_cryptolocker.exe
Size

38KB
MD5

f58d7b2f054ef18f88ab0329c337aa36
SHA1

7ddf66b8de589cb34d2c0a4df0baa39a56dcab22
SHA256

e54edd9b980f9e3a367276aa60727bd43532a9eabe393748f617a1337f60d4a7
SHA512

2940eaf786b6b2ff3e17c139a4981c9fbe4615b856fee622f23ba9c65aefa12b9cc8d6b647388d5a341823efd116aef882a177fcc8c5e1ffe4ba841fce89d881
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DyE9xcN:bIDOw9a0Dwo3P1ojvUSD79A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001b00000002251f-12.dat	CryptoLocker_rule2

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-1-5-21-1790404759-2178872477-2616469472-1000\Control Panel\International\Geo\Nation	2024-02-23_f58d7b2f054ef18f88ab0329c337aa36_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4676	lossy.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 4868 wrote to memory of 4676	4868	2024-02-23_f58d7b2f054ef18f88ab0329c337aa36_cryptolocker.exe	88
PID 4868 wrote to memory of 4676	4868	2024-02-23_f58d7b2f054ef18f88ab0329c337aa36_cryptolocker.exe	88
PID 4868 wrote to memory of 4676	4868	2024-02-23_f58d7b2f054ef18f88ab0329c337aa36_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-23_f58d7b2f054ef18f88ab0329c337aa36_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_f58d7b2f054ef18f88ab0329c337aa36_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4868
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4676

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\lossy.exe

Filesize
38KB

MD5
236f6902452cf3c3dbd8aba15fd77090

SHA1
f83faf28674190cb57cc3c04d15c560f836cae16

SHA256
7a445d9cd3006468f5f76df26a47ff392a8c0e337d59ca31563f3d13c594e19a

SHA512
0a794d03105c0a9f507e590864cf118653741906c48accab655fb4072f1be59340616a6de4a871811888306a4df6cb63f667bf3075d92f42798d51394f627352

Download Submit
memory/4676-17-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4676-18-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4868-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4868-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4868-2-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download