ad16fe6e995bbc43e4e783cabc9352ac79fb165a95dd2c0cf9b21c50cb502450

Analysis

max time kernel
141s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 07:28

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General

Target

2024-03-27_40f3cf69d3df053dca4b470ba5fdc970_cryptolocker.exe
Size

51KB
MD5

40f3cf69d3df053dca4b470ba5fdc970
SHA1

22a01a6135796ea6dfabe2fb0ea6b58ec39098ec
SHA256

ad16fe6e995bbc43e4e783cabc9352ac79fb165a95dd2c0cf9b21c50cb502450
SHA512

bec8a4d21cf2dc59ac117ac2120a6a53c26ba95860d9e5c8b48a090554b5a74a66f5eac4542b28e15e32287e52de6091f6b6b91dce3b14f0bc566dfbbd33acac
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcXkC:X6QFElP6n+gJBMOtEvwDpjBtExmlK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-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	2024-03-27_40f3cf69d3df053dca4b470ba5fdc970_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4176	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 1712 wrote to memory of 4176	1712	2024-03-27_40f3cf69d3df053dca4b470ba5fdc970_cryptolocker.exe	97
PID 1712 wrote to memory of 4176	1712	2024-03-27_40f3cf69d3df053dca4b470ba5fdc970_cryptolocker.exe	97
PID 1712 wrote to memory of 4176	1712	2024-03-27_40f3cf69d3df053dca4b470ba5fdc970_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-27_40f3cf69d3df053dca4b470ba5fdc970_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_40f3cf69d3df053dca4b470ba5fdc970_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4176

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=1428 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:4768

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
51KB

MD5
26f6e665d2bf98fc051b3fc9298720ec

SHA1
7996182b6e3d5d4c3fb8894aed44be6146378531

SHA256
6a0049d3b8fffd7862ae5ef0d040dd9f0a32046b7c2519a954cbbce314a5e726

SHA512
b90ce9f228dfbc9e9c8e0105d096578e30b3adba4198b746630b25dc97f41c0799344bdab98702b599791130d9289a8d38e5e1af7a6cc7bd32b16ecb008baf45

Download Submit
memory/1712-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1712-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1712-2-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4176-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4176-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download