b09ecd674dade54e2e14188d3101be83e7687f73de041f0b14fa583c1aa5ebbd

Analysis

max time kernel
152s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 16:56

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General

Target

2024-06-04_28d94611df78fbc97792c4e2f8bf9f13_cryptolocker.exe
Size

50KB
MD5

28d94611df78fbc97792c4e2f8bf9f13
SHA1

ac9fa84bbcf400e517546d1c01cc01f426109c90
SHA256

b09ecd674dade54e2e14188d3101be83e7687f73de041f0b14fa583c1aa5ebbd
SHA512

37ddbbec565170dc57e18543b9bde4b0515738f2fd84c7cb108525b437328979122964d8c73e480cd3d0a2f77205ef7e31ef118db81e9fb1c0dd0647778ab639
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPx9UnuDLlD+JIP:bIDOw9a0Dwo3P1ojvUSD4PInyDkY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023244-12.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	2024-06-04_28d94611df78fbc97792c4e2f8bf9f13_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1456	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 4300 wrote to memory of 1456	4300	2024-06-04_28d94611df78fbc97792c4e2f8bf9f13_cryptolocker.exe	90
PID 4300 wrote to memory of 1456	4300	2024-06-04_28d94611df78fbc97792c4e2f8bf9f13_cryptolocker.exe	90
PID 4300 wrote to memory of 1456	4300	2024-06-04_28d94611df78fbc97792c4e2f8bf9f13_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-04_28d94611df78fbc97792c4e2f8bf9f13_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_28d94611df78fbc97792c4e2f8bf9f13_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4300
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1456

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=3976 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:2232

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
50KB

MD5
5c82ca35a9e4f902002a1e6b2379aab9

SHA1
d098dec9a1f9e513a6c017666765dde75f0edca8

SHA256
4693c89506149b636897fcc631dd34615e7f2ee51ef74fe1370bafe61bc5f5e5

SHA512
d17f6fbc16b17f2986fe6cf05e587c8208e0952c0e6a0a16866b8d790e63d454bfd90d031e3dd11679df0259427db27e2a7d0924d3000de0f6adb5f8530354eb

Download Submit
memory/1456-17-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/1456-18-0x0000000002030000-0x0000000002036000-memory.dmp

Filesize
24KB

Download
memory/4300-0-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/4300-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/4300-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download