3cf552d5e55d46f64468149ba01ee30da79d8e9e23dfe63c558f04809a804e97

Analysis

max time kernel
137s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 02:55

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General

Target

2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe
Size

50KB
MD5

60838f40eac5ea2ba6d36e64797bdf8d
SHA1

ed982e113dedf97d075f85b5877b5e82a5b44ce8
SHA256

3cf552d5e55d46f64468149ba01ee30da79d8e9e23dfe63c558f04809a804e97
SHA512

e962d171fcc18e345302beadf68da2e89ce7a118d6faef38c336ae380556a28b1a91756fd455cd33c0b88527654e8fa7cc0a237bb5eaec3bbb756c37a8dfab88
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZYY:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLiY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002325f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002325f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4220	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 4452 wrote to memory of 4220	4452	2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe	91
PID 4452 wrote to memory of 4220	4452	2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe	91
PID 4452 wrote to memory of 4220	4452	2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4452
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4220

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=5164 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:4284

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\asih.exe

Filesize
50KB

MD5
a5e5a0f2ff0ce3597068e8543c115324

SHA1
59437955b5501b6150f7d57fd2e71d42b5ad46d3

SHA256
9953b80bd5b79d01b51daf19bed842846326434f3d4d1f2080f43fd94aea196a

SHA512
7694444f48e8ed4ee5ad8eff1256627278185b0254fc0b981ea2bd4768216fe791675cf041c11edc4cea24326df482b2f83b81a78bf42a0b7aabbacb39f62610

Download Submit
memory/4220-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4220-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4452-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4452-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4452-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download