ee63c12512371bbd3af6aa445de2ced241868392f71373c4d900bc04683bbc23

Analysis

max time kernel
153s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11-03-2024 14:54

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General

Target

2024-03-11_f9976bb0ea78e0f7a407ba262993c8e0_cryptolocker.exe
Size

38KB
MD5

f9976bb0ea78e0f7a407ba262993c8e0
SHA1

2899b0fe93e1be9182847b75acf59bdbde4c70a8
SHA256

ee63c12512371bbd3af6aa445de2ced241868392f71373c4d900bc04683bbc23
SHA512

40e7450ba588bc16dd76a2c17068d1abc5c8ffd044eacac56ae7c43b5bb91e6b26421dac7f0d72f7ffe2e57d4c30cae0c76283f67c597fff4fe3021ff37a8b01
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3OvRxN32RJ:bxNrC7kYo1Fxf3s06gYvRbW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-11_f9976bb0ea78e0f7a407ba262993c8e0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2436	pissa.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 4840 wrote to memory of 2436	4840	2024-03-11_f9976bb0ea78e0f7a407ba262993c8e0_cryptolocker.exe	100
PID 4840 wrote to memory of 2436	4840	2024-03-11_f9976bb0ea78e0f7a407ba262993c8e0_cryptolocker.exe	100
PID 4840 wrote to memory of 2436	4840	2024-03-11_f9976bb0ea78e0f7a407ba262993c8e0_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-11_f9976bb0ea78e0f7a407ba262993c8e0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_f9976bb0ea78e0f7a407ba262993c8e0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4840
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:2436

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:5104

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\pissa.exe

Filesize
38KB

MD5
9cd9923bc2b3be1def0473b49e17daa5

SHA1
a9453f6905baa61afc7cfc53259c463348c4d1da

SHA256
0eafa4979cacb67e6d7a0d2ccb342063643cef9ec6b8d1f3b7d7b6f0ff43579d

SHA512
46f742218c252ed36d533a00f16172c41b7b00190f8aa260bd748e38e233709ef2eb1bd6795673456cd3eefdd49373b4d9a058c87e50f81475b7cca69d938458

Download Submit
memory/2436-17-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/2436-21-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4840-0-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/4840-1-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/4840-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download