0dd99fdb865293ab9973850f1b81b4675b120073252a74ac7134d0769f157b66

Analysis

max time kernel
142s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 05:25

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General

Target

2024-03-08_0527599b7616d23a97330ed360f45ced_cryptolocker.exe
Size

74KB
MD5

0527599b7616d23a97330ed360f45ced
SHA1

36e7cbec2bcd3c08340507660f92a8f9dc3f1ee3
SHA256

0dd99fdb865293ab9973850f1b81b4675b120073252a74ac7134d0769f157b66
SHA512

57d925c6ac2b61b9c7035f780524bf6f721c2ea117e068f7e8db3477fae89a6a2ab4274cae91b9fc383be1da1a6a2c51658da79e07eeed7a9c531d5a7dc15674
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1Rk:X6a+SOtEvwDpjBZYvQd2+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0002000000022ea1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0002000000022ea1-12.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	2024-03-08_0527599b7616d23a97330ed360f45ced_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4956	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 1580 wrote to memory of 4956	1580	2024-03-08_0527599b7616d23a97330ed360f45ced_cryptolocker.exe	99
PID 1580 wrote to memory of 4956	1580	2024-03-08_0527599b7616d23a97330ed360f45ced_cryptolocker.exe	99
PID 1580 wrote to memory of 4956	1580	2024-03-08_0527599b7616d23a97330ed360f45ced_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-08_0527599b7616d23a97330ed360f45ced_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_0527599b7616d23a97330ed360f45ced_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4956

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=1404 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
1⤵
PID:3756

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
75KB

MD5
a76777cf89eb735d52a566a5a3e9b0f4

SHA1
878017428d037808a9f29b804abbae0e4b62e01c

SHA256
79343afee840fd859e77dbcbd393a9e8cfa1c34bb10d69edc256db7bcd9238a3

SHA512
6cf4ec097d9c0245289de4dca8ea71458ae5688b97ccc34dcd5e1117c971d2e81b9ca261041dfab6ff82d80025958eed76c8d0bcccaf7430a8550f2ff32354b4

Download Submit
memory/1580-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1580-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1580-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4956-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4956-19-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download