c1612cf2f706062a25dda9d6fdff2ad2980514e5ca8a539b99ee6d5af170ff14

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
23-04-2024 23:31

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General

Target

2024-04-23_b18986a808394c15e18f60e7da792512_cryptolocker.exe
Size

73KB
MD5

b18986a808394c15e18f60e7da792512
SHA1

cd84d2a1974f188fdca29085aa06f3e71523ec6f
SHA256

c1612cf2f706062a25dda9d6fdff2ad2980514e5ca8a539b99ee6d5af170ff14
SHA512

d2cc17b3ffb1d14cb21d33466aa5208cf6d364b197040d42e108ce472298b7ae776aa85335d8d8011651fe4624d163c550b0118a48357907316c16942ce4eab0
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1svrt:X6a+SOtEvwDpjBZYvQd28x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023257-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023257-12.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	2024-04-23_b18986a808394c15e18f60e7da792512_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1860	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 2240 wrote to memory of 1860	2240	2024-04-23_b18986a808394c15e18f60e7da792512_cryptolocker.exe	90
PID 2240 wrote to memory of 1860	2240	2024-04-23_b18986a808394c15e18f60e7da792512_cryptolocker.exe	90
PID 2240 wrote to memory of 1860	2240	2024-04-23_b18986a808394c15e18f60e7da792512_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-04-23_b18986a808394c15e18f60e7da792512_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_b18986a808394c15e18f60e7da792512_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1860

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=4076 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:4196

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
73KB

MD5
aa4e8b67c89f88dd646b8befaa0d52fa

SHA1
c5c0f3eabc37dab3eb78006355bcb82bc39e233a

SHA256
0ae624386f9a6d087c0e39a8dbbb8fa11ddfa5a04953c1fe3e4eae35639d8706

SHA512
3f91ee73ef30fcf7b38e93a4739fc4da51bf9ede53e1d14ef9bcecd73aeaee860ca62abffc0c0f227a6437bb19d2029b707de82df56e7842d50409df99b0fb06

Download Submit
memory/1860-17-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/2240-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2240-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2240-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download