309a8af48c6763f2f4ed3c1574e1800177f00254c036201f36f799a49c391791

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 11:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-28_1760e58c5a53227526fbd15f9ceefe12_cryptolocker.exe
Size

39KB
MD5

1760e58c5a53227526fbd15f9ceefe12
SHA1

495827a90bf38fb80ca02c0410ddb8b59a7d8f60
SHA256

309a8af48c6763f2f4ed3c1574e1800177f00254c036201f36f799a49c391791
SHA512

8884e48432c2b36196c1f78bacd2709fa427c177bd95868648dd900b81ea5e2077ab5698a6a3f897f43e4a0dfeb78131bbeb4e57b35c856e71db31c40aabc849
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axe3q:V6QFElP6n+gMQMOtEvwDpjyaYa+q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001db72-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001db72-12.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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	2024-03-28_1760e58c5a53227526fbd15f9ceefe12_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2664	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 864 wrote to memory of 2664	864	2024-03-28_1760e58c5a53227526fbd15f9ceefe12_cryptolocker.exe	95
PID 864 wrote to memory of 2664	864	2024-03-28_1760e58c5a53227526fbd15f9ceefe12_cryptolocker.exe	95
PID 864 wrote to memory of 2664	864	2024-03-28_1760e58c5a53227526fbd15f9ceefe12_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-03-28_1760e58c5a53227526fbd15f9ceefe12_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_1760e58c5a53227526fbd15f9ceefe12_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:864
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2664

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=1412 --field-trial-handle=2132,i,4018525042804461719,1997165676266557055,262144 --variations-seed-version /prefetch:8
1⤵
PID:4316

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

Loading Replay Monitor...

Downloads

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

Filesize
39KB

MD5
b48cd8e38535bc4dd13362c52975b4d3

SHA1
540254960dc1e8fa8187e05f09aa682662f3ebdb

SHA256
8c1472ef7f187d5be20e7296d9f6e9122386837d73160f1e267b702078ccca74

SHA512
788aff032c76044251db1108d986ab0a026634fda06417335d933bb4727fe2c5a5dd22f0a774b813b4f0a7f022c2d27a2dd0e01f07545cd2648e18fc9b088839

Download Submit
memory/864-0-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/864-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/864-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2664-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2664-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download