117f4093a2804b61a81261e4a9de28b09f0644ed15309c9f88ff6ff6371c2986

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 15:34

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General

Target

2024-05-21_476d64247370236ea82d013a86beff3f_cryptolocker.exe
Size

46KB
MD5

476d64247370236ea82d013a86beff3f
SHA1

14ad7af4c7b9292fb3de312fa83940e56f85e3d9
SHA256

117f4093a2804b61a81261e4a9de28b09f0644ed15309c9f88ff6ff6371c2986
SHA512

e92995e1c0acf7da6c2c3d5a49a33a6f9f48b79e19d132d7073a4b0e23ca235089ca9dfcf9437a23b16151d946d2d91988c600f4a7c37f556d426323ebaed8ae
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPh+18:P6QFElP6k+MRQMOtEvwDpjBQpVXK+q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/244-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/1964-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/244-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1964-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/244-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/1964-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/244-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1964-27-0x0000000000500000-0x000000000050B000-memory.dmp	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

Processes:

2024-05-21_476d64247370236ea82d013a86beff3f_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-21_476d64247370236ea82d013a86beff3f_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1964 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1964	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_476d64247370236ea82d013a86beff3f_cryptolocker.exe

description	pid	process	target process
PID 244 wrote to memory of 1964	244	2024-05-21_476d64247370236ea82d013a86beff3f_cryptolocker.exe	asih.exe
PID 244 wrote to memory of 1964	244	2024-05-21_476d64247370236ea82d013a86beff3f_cryptolocker.exe	asih.exe
PID 244 wrote to memory of 1964	244	2024-05-21_476d64247370236ea82d013a86beff3f_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_476d64247370236ea82d013a86beff3f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_476d64247370236ea82d013a86beff3f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:244
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1964

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 --field-trial-handle=4316,i,15721081447618313297,6839074028983272033,262144 --variations-seed-version --mojo-platform-channel-handle=3976 /prefetch:8
1⤵
PID:4492

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
46KB

MD5
5cd316bea74b894f235ef8b3c2ffbaea

SHA1
510ee71bc5eabf844da6ed4c0fa2a4f0a4dab230

SHA256
63c07be6f246e9bcc6fe636e31f37028d7e637f0107756b0a4250eb567189404

SHA512
f6556aa39c273cbda1b59890d71a095f7da562d210e44f1f7024390c2471d6e276a41a72578fc49b9867bcbfc071ec9cf923eae2cb1eeffb1d7df77ce390da8d

Download Submit
memory/244-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/244-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/244-2-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/244-9-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/244-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1964-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1964-21-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1964-26-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1964-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download